ZyXEL Communications ZyAIR G-3000H User Manual
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G-3000H
802.11g Wireless Access Point
User’s Guide
Version 3.50
1/2006
2
G-3000H User’s Guide
Copyright
Copyright © 2006 by ZyXEL Communications Corporation.
The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL Communications Corporation.
Published by ZyXEL Communications Corporation. All rights reserved.
Disclaimer
ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patent rights of others. ZyXEL further reserves the right to make changes in any products described herein without notice. This publication is subject to change without notice.
Trademarks
ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL
Communications, Inc. Other trademarks mentioned in this publication are used for identification purposes only and may be properties of their respective owners.
Copyright
G-3000H User’s Guide
Federal Communications
Commission (FCC) Interference
Statement
This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions:
• This device may not cause harmful interference.
• This device must accept any interference received, including interference that may cause undesired operations.
This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
If this equipment does cause harmful interference to radio/television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Notice 1
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
Federal Communications Commission (FCC) Interference Statement 3
G-3000H User’s Guide
Certifications
Go to www.zyxel.com
1 Select your product from the drop-down list box on the ZyXEL home page to go to that product's page.
2 Select the certification you wish to view from this page
This product has been designed for the WLAN 2.4 GHz network throughout the EC region and
Switzerland, with restrictions in France.
4 Federal Communications Commission (FCC) Interference Statement
G-3000H User’s Guide
Safety Warnings
1 To reduce the risk of fire, use only No. 26 AWG or larger telephone wire.
2 Do not use this product near water, for example, in a wet basement or near a swimming pool.
3 Avoid using this product during an electrical storm. There may be a remote risk of electric shock from lightening.
Safety Warnings 5
6
G-3000H User’s Guide
ZyXEL Limited Warranty
ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or workmanship for a period of up to two years from the date of purchase. During the warranty period, and upon proof of purchase, should the product have indications of failure due to faulty workmanship and/or materials, ZyXEL will, at its discretion, repair or replace the defective products or components without charge for either parts or labor, and to whatever extent it shall deem necessary to restore the product or components to proper operating condition. Any replacement will consist of a new or re-manufactured functionally equivalent product of equal value, and will be solely at the discretion of ZyXEL. This warranty shall not apply if the product is modified, misused, tampered with, damaged by an act of God, or subjected to abnormal working conditions.
Note
Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This warranty is in lieu of all other warranties, express or implied, including any implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for indirect or consequential damages of any kind of character to the purchaser.
To obtain the services of this warranty, contact ZyXEL's Service Center for your Return
Material Authorization number (RMA). Products must be returned Postage Prepaid. It is recommended that the unit be insured when shipped. Any returned products without proof of purchase or those with an out-dated warranty will be repaired or replaced (at the discretion of
ZyXEL) and the customer will be billed for parts and labor. All repaired or replaced products will be shipped by ZyXEL to the corresponding return address, Postage Paid. This warranty gives you specific legal rights, and you may also have other rights that vary from country to country.
Registration
Register your product online to receive e-mail notices of firmware upgrades and information at www.zyxel.com for global products, or at www.us.zyxel.com for North American products.
ZyXEL Limited Warranty
G-3000H User’s Guide
Customer Support
DENMARK
FINLAND
FRANCE
GERMANY
HUNGARY
KAZAKHSTAN
Please have the following information ready when you contact customer support.
• Product model and serial number.
• Warranty Information.
• Date that you received your device.
• Brief description of the problem and the steps you took to solve it.
LOCATION
METHOD SUPPORT E-MAIL TELEPHONE A
SALES E-MAIL FAX [email protected] +886-3-578-3942
CORPORATE
HEADQUARTERS
(WORLDWIDE) [email protected]
+886-3-578-2439
CZECH REPUBLIC [email protected]
+420-241-091-350
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+358-9-4780-8411
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+33-4-72-52-19-20 [email protected]
+49-2405-6909-0
+49-2405-6909-99
+36-1-3361649
+36-1-3259100 http://zyxel.kz/support +7-3272-590-698 [email protected]
+7-3272-590-689
NORTH AMERICA
NORWAY [email protected]
1-800-255-4101
+1-714-632-0882
+1-714-632-0858 [email protected]
[email protected] +47-22-80-61-80 [email protected] +47-22-80-61-81
WEB SITE
REGULAR MAIL
FTP SITE www.zyxel.com
www.europe.zyxel.com
ftp.zyxel.com
ftp.europe.zyxel.com
ZyXEL Communications Corp.
6 Innovation Road II
Science Park
Hsinchu 300
Taiwan www.zyxel.cz
ZyXEL Communications
Czech s.r.o.
Modranská 621
143 01 Praha 4 - Modrany
Ceská Republika
Communications A/S
Columbusvej
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Denmark www.zyxel.fi ZyXEL Communications Oy
Malminkaari 10
00700 Helsinki
Finland
France
1 rue des Vergers
Bat. 1 / C
69760 Limonest
France www.zyxel.de
www.zyxel.hu
ZyXEL Deutschland GmbH.
Adenauerstr. 20/A2 D-52146
Wuerselen
Germany
ZyXEL Hungary
48, Zoldlomb Str.
H-1025, Budapest
Hungary www.zyxel.kz
www.us.zyxel.com
ftp.us.zyxel.com
www.zyxel.no
ZyXEL Kazakhstan
43, Dostyk ave.,Office 414
Dostyk Business Centre
050010, Almaty
Republic of Kazakhstan
ZyXEL Communications Inc.
1130 N. Miller St.
Anaheim
CA 92806-2001
U.S.A.
ZyXEL Communications A/S
Nils Hansens vei 13
0667 Oslo
Norway
Customer Support 7
G-3000H User’s Guide
METHOD SUPPORT E-MAIL TELEPHONE
A
WEB SITE
REGULAR MAIL
LOCATION SALES E-MAIL FAX FTP SITE
POLAND
RUSSIA
SPAIN
SWEDEN
UKRAINE
UNITED KINGDOM [email protected]
http://zyxel.ru/support [email protected]
+48-22-5286603
+48-22-5206701
+7-095-542-89-29
+7-095-542-89-25
+34-902-195-420 [email protected] +34-913-005-345 [email protected] +46-31-744-7700 [email protected] +46-31-744-7701 [email protected] +380-44-247-69-78 [email protected]
+380-44-494-49-32 www.pl.zyxel.com
www.zyxel.ru
ZyXEL Russia
Ostrovityanova 37a Str.
Moscow, 117279
Russia www.zyxel.es ZyXEL Communications
Alejandro Villegas 33
1º, 28043 Madrid
Spain www.zyxel.se
ZyXEL Communications ul.Emilli Plater 53
00-113 Warszawa
Poland www.ua.zyxel.com
ZyXEL Communications A/S
Sjöporten 4, 41764 Göteborg
Sweden
ZyXEL Ukraine
13, Pimonenko Str.
Kiev, 04050
Ukraine
+44-1344 303044
08707 555779 (UK only)
+44-1344 303034 www.zyxel.co.uk
ftp.zyxel.co.uk
ZyXEL Communications UK
Ltd.,11 The Courtyard,
Eastern Road, Bracknell,
Berkshire, RG12 2XB,
United Kingdom (UK) a. “+” is the (prefix) number you enter to make an international telephone call.
8 Customer Support
G-3000H User’s Guide
Table of Contents
Federal Communications Commission (FCC) Interference Statement ............... 3
2.2.1 Methods of Restoring Factory-Defaults ....................................................41
Table of Contents 9
G-3000H User’s Guide
5.3.2.2 DSCP and Per-Hop Behavior ..........................................................56
5.3.3 ToS (Type of Service) and WMM QoS ......................................................56
10 Table of Contents
G-3000H User’s Guide
6.6.3 WPA(2)-PSK Application Example ...........................................................70
6.7 WPA(2) with RADIUS Application Example .......................................................71
6.9 Security Modes and Wireless Client Compatibility .............................................73
6.12.3 Security: 802.1x Only, 802.1x Static 64-bit WEP, 128-bit WEP ..............77
6.12.4 Security: 802.1x Dynamic 64-bit WEP, 128-bit WEP ..............................78
6.12.5 Security: WPA, WPA-MIX, WPA2, WPA2-MIX ........................................80
6.12.6 Security: WPA-PSK, WPA2-PSK, WPA2-PSK-MIX ................................80
Table of Contents 11
G-3000H User’s Guide
9.2.1 Configuring Management VLAN Example ..............................................103
9.2.2 Configuring Microsoft’s IAS Server Example ..........................................105
9.2.2.1 Configuring VLAN Groups .............................................................106
9.2.2.2 Configuring Remote Access Policies ............................................107
10.2.1 IP Address and Subnet Mask ...............................................................115
10.2.2 WAN IP Address Assignment ...............................................................115
12 Table of Contents
G-3000H User’s Guide
12.1.1 Remote Management Limitations .........................................................135
12.1.2 Remote Management and NAT ............................................................136
15.3 ZyAIR SMT Menu Overview Example ............................................................160
Table of Contents 13
G-3000H User’s Guide
15.4.1 System Management Terminal Interface Summary ..............................162
16.1.1 Procedure To Configure Menu 1 ...........................................................165
17.3.1 Configuring MAC Address Filter ...........................................................170
14 Table of Contents
G-3000H User’s Guide
Firmware and Configuration File Maintenance ................................................. 195
23.2.1 Backup Configuration Using FTP .........................................................196
23.2.2 Using the FTP command from the DOS Prompt ..................................197
23.2.3 Backup Configuration Using TFTP .......................................................198
23.2.4 Example: TFTP Command ...................................................................199
23.4 Uploading Firmware and Configuration Files .................................................201
23.4.3 Using the FTP command from the DOS Prompt Example ...................203
23.4.5 Example: TFTP Command ...................................................................204
23.4.7 Uploading Firmware File Via Console Port ...........................................204
23.4.8 Example Xmodem Firmware Upload Using HyperTerminal ..................205
23.4.9 Uploading Configuration File Via Console Port ....................................205
23.4.10 Example Xmodem Configuration Upload Using HyperTerminal .........206
24.3.4 Remote Management Setup .................................................................215
24.3.5 Remote Management Limitations .........................................................217
Table of Contents 15
G-3000H User’s Guide
Brute-Force Password Guessing Protection..................................................... 225
16 Table of Contents
G-3000H User’s Guide
List of Figures
Figure 36 Security: WPA-PSK, WPA2-PSK or WPA2-PSK-MIX ......................................... 81
List of Figures 17
G-3000H User’s Guide
18 List of Figures
G-3000H User’s Guide
List of Figures 19
G-3000H User’s Guide
Figure 130 Menu 24.2 System Information and Console Port Speed ................................. 191
Figure 132 Menu 24.2.2 System Maintenance: Change Console Port Speed .................... 192
Figure 139 System Maintenance: Starting Xmodem Download Screen ............................. 200
Figure 144 Menu 24.7.1 System Maintenance: Upload System Firmware ......................... 202
Figure 145 Menu 24.7.2 System Maintenance: Upload System Configuration File ............ 202
Figure 155 Menu 24.10 System Maintenance: Time and Date Setting ............................... 213
Figure 160 Windows 95/98/Me: TCP/IP Properties: DNS Configuration ............................ 230
Figure 163 Windows XP: Control Panel: Network Connections: Properties ....................... 232
20 List of Figures
G-3000H User’s Guide
List of Figures 21
G-3000H User’s Guide
22 List of Figures
G-3000H User’s Guide
List of Tables
Table 11 ToS and IEEE 802.1d to WMM QoS Priority Level Mapping ............................... 56
Table 17 Security Modes for ZyAIR and Windows XP Wireless Client .............................. 73
Table 22 Security: 802.1x Only, 802.1x Static 64-bit WEP, 128-bit WEP ........................... 77
Table 25 Security: WPA-PSK, WPA2-PSK or WPA2-PSK-MIX .......................................... 81
List of Tables 23
G-3000H User’s Guide
24 List of Tables
G-3000H User’s Guide
Table 92 Brute-Force Password Guessing Protection Commands .................................... 225
List of Tables 25
G-3000H User’s Guide
26 List of Tables
Preface
G-3000H User’s Guide
Preface
Congratulations on your purchase of the G-3000H - 802.11g Wireless Access Point/Bridge/
Repeater.
An AP acts as a bridge between the wireless and wired networks, extending your existing wired network without any additional wiring.
The ZyAIR can function as a wireless network bridge/repeater and establish up to five wireless links with other APs.
The ZyAIR also supports both AP and bridge connections at the same time.
Your ZyAIR is easy to install and configure.
Note: Register your product online to receive e-mail notices of firmware upgrades and information at www.zyxel.com
for global products, or at www.us.zyxel.com
for North
American products.
About This User's Guide
This User’s Guide is designed to guide you through the configuration of your ZyAIR using the web configurator or the SMT. The web configurator parts of this guide contain background information on features configurable by web configurator. The SMT parts of this guide contain background information solely on features not configurable by web configurator
Note: Use the web configurator, System Management Terminal (SMT) or command interpreter interface to configure your ZyAIR. Not all features can be configured through all interfaces.
Related Documentation
• Supporting Disk
Refer to the included CD for support documents.
• Quick Start Guide
The Quick Start Guide is designed to help you get up and running right away. It contains connection information and instructions on getting started.
• Web Configurator Online Help
Embedded web help for descriptions of individual screens and supplementary information.
• ZyXEL Glossary and Web Site
Please refer to www.zyxel.com for an online glossary of networking terms and additional support documentation.
27
G-3000H User’s Guide
User Guide Feedback
Help us help you. E-mail all User Guide-related comments, questions or suggestions for improvement to [email protected] or send regular mail to The Technical Writing
Team, ZyXEL Communications Corp., 6 Innovation Road II, Science-Based Industrial Park,
Hsinchu, 300, Taiwan. Thank you.
Syntax Conventions
• “Enter” means for you to type one or more characters. “Select” or “Choose” means for you to use one of the predefined choices.
• The SMT menu titles and labels are in Bold Times New Roman font. Predefined field choices are in Bold Arial font. Command and arrow keys are enclosed in square brackets . [ENTER] means the Enter, or carriage return key; [ESC] means the Escape key and [SPACE BAR] means the Space Bar.
• Mouse action sequences are denoted using a comma. For example, “click the Apple icon,
Control Panels and then Modem ” means first click the Apple icon, then point your mouse pointer to Control Panels and then click Modem .
• “e.g.,” is a shorthand for “for instance”, and “i.e.,” means “that is” or “in other words”.
• The G-3000H may be referred to simply as the ZyAIR in the user’s guide.
Graphics Icons Key
ZyAIR Computer Notebook computer
Server DSLAM Firewall
Modem
Wireless Signal
Switch Router
28 Preface
G-3000H User’s Guide
C H A P T E R 1
Getting to Know Your ZyAIR
This chapter introduces the main features and applications of the ZyAIR.
1.1 Introducing the ZyAIR
The G-3000H extends the range of your existing wired network without any additional wiring efforts, providing easy network access to mobile users.
The ZyAIR offers highly secured wireless connectivity to your wired network with IEEE
802.1x, Wi-Fi Protected Access, WEP data encryption and MAC address filtering.
The ZyAIR is easy to install and configure. The embedded web-based configurator enables easy operation and configuration.
1.2 ZyAIR Features
The following sections describe the features of the ZyAIR
1.2.1 Physical Features
10/100M Auto-negotiating Ethernet/Fast Ethernet Interface
This auto-negotiating feature allows the ZyAIR to detect the speed of incoming transmissions and adjust appropriately without manual intervention. It allows data transfer of either 10 Mbps or 100 Mbps in either half-duplex or full-duplex mode depending on your Ethernet network.
10/100M Auto-crossover Ethernet/Fast Ethernet Interface
An auto-crossover (auto-MDI/MDI-X) port automatically works with a straight-through or crossover Ethernet cable.
Reset Button
The ZyAIR reset button is built into the side panel. Use this button to restore the factory default password to 1234; IP address to 192.168.1.2, subnet mask to 255.255.255.0.
Chapter 1 Getting to Know Your ZyAIR 29
G-3000H User’s Guide
ZyAIR LED
The blue ZyAIR LED (also known as the Breathing LED) is on when the ZyAIR is on and blinks (or breaths) when data is being transmitted to/from its wireless stations. You may use the web configurator to turn this LED off even when the ZyAIR is on and data is being transmitted/received.
Bridge/Repeater LED
A Bridge/Repeater link LED turns steady on green when your ZyAIR acts as a bridge, establishing up to six wireless links with other APs.
Power over Ethernet (PoE)
Power over Ethernet (PoE) is the ability to provide power to your ZyAIR via an 8-pin CAT 5
Ethernet cable, eliminating the need for a nearby power source. An injector or PoE device (not included) is also needed to supply the Ethernet cable with power. This feature allows increased flexibility in the locating of your ZyAIR. You only need to connect the external power adaptor if you are not using PoE. If you simultaneously use both PoE and the external power adaptor, the ZyAIR will draw power from the PoE connection only. Refer to the appendix for more information about PoE.
Figure 1 PoE Installation Example
1.2.2 Firmware Features
Wi-Fi Protected Access
Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. Key differences between WPA and WEP are user authentication and improved data encryption.
Layer-2 Isolation
Layer-2 isolation is used to prevent wireless clients associated with your ZyAIR from communicating with other wireless clients, AP’s, computers or routers in a network.
30 Chapter 1 Getting to Know Your ZyAIR
G-3000H User’s Guide
VLAN
A VLAN (Virtual Local Area Network) allows a physical network to be partitioned into multiple logical networks. Only stations within the same group can talk to each other. Stations on a logical network can belong to one or more groups. The ZyAIR supports 802.1Q VLAN tagging. Tagged VLAN uses an explicit tag (VLAN ID) in the MAC header of a frame to identify VLAN membership. The ZyAIR can identify VLAN tags for incoming Ethernet frames and add VLAN tags to outgoing Ethernet frames.
Configure VLAN (virtual LAN) to extend the wireless logical grouping to the wired network.
A ZyAIR that you configure with the built-in wireless card uses the same Management
VLAN ID as a ZyAIR configured with a removable wireless card.
WDS Functionality
A Distribution System (DS) is a wired connection between two or more APs, while a Wireless
Distribution System (WDS) is a wireless connection. Your ZyAIR supports WDS, providing a cost-effective solution for wireless network expansion.
Figure 2 WDS Functionality Example
802.11b Wireless LAN Standard
The ZyAIR complies with the 802.11b wireless standard.
Chapter 1 Getting to Know Your ZyAIR 31
G-3000H User’s Guide
The 802.11b data rate and corresponding modulation techniques are shown in the table below.
The modulation technique defines how bits are encoded onto radio waves.
Table 1 IEEE 802.11b
DATA RATE (MBPS)
1
2
5.5 / 11
MODULATION
DBPSK (Differential Binary Phase Shifted Keying)
DQPSK (Differential Quadrature Phase Shifted Keying )
CCK (Complementary Code Keying)
802.11g Wireless LAN Standard
The ZyAIR, complies with the 802.11g wireless standard and is also fully compatible with the
802.11b standard. This means an 802.11b radio card can interface directly with an 802.11g device (and vice versa) at 11 Mbps or lower depending on range. 802.11g has several intermediate rate steps between the maximum and minimum data rates. The 802.11g data rate and modulation are as follows:.
Table 2 IEEE 802.11g
DATA RATE (MBPS)
6/9/12/18/24/36/48/54
MODULATION
OFDM (Orthogonal Frequency Division Multiplexing)
Note: The ZyAIR may be prone to RF (Radio Frequency) interference from other 2.4
GHz devices such as microwave ovens, wireless phones, Bluetooth enabled devices, and other wireless LANs.
STP (Spanning Tree Protocol) / RSTP (Rapid STP)
(R)STP detects and breaks network loops and provides backup links between switches, bridges or routers. It allows a bridge to interact with other (R)STP-compliant bridges in your network to ensure that only one path exists between any two stations on the network.
WMM QoS
WMM (Wi-Fi MultiMedia) QoS (Quality of Service) allows you to prioritize wireless traffic according to the delivery requirements of the individual and applications.
Certificates
The ZyAIR can use certificates (also called digital IDs) to authenticate users. Certificates are based on public-private key pairs. Certificates provide a way to exchange public keys for use in authentication.
32 Chapter 1 Getting to Know Your ZyAIR
G-3000H User’s Guide
Limit the number of Client Connections
You may set a maximum number of wireless stations that may connect to the ZyAIR. This may be necessary if for example, there is interference or difficulty with channel assignment due to a high density of APs within a coverage area.
SSL Passthrough
SSL (Secure Sockets Layer) uses a public key to encrypt data that's transmitted over an SSL connection. Both Netscape Navigator and Internet Explorer support SSL, and many Web sites use the protocol to obtain confidential user information, such as credit card numbers. By convention, URLs that require an SSL connection start with “https” instead of “http”. The
ZyAIR allows SSL connections to take place through the ZyAIR.
Brute-Force Password Guessing Protection
The ZyAIR has a special protection mechanism to discourage brute-force password guessing attacks on the ZyAIR's management interfaces. You can specify a wait-time that must expire before entering a fourth password after three incorrect passwords have been entered. Please see the appendix for details about this feature.
Wireless LAN MAC Address Filtering
Your ZyAIR checks the MAC address of the wireless station against a list of allowed or denied
MAC addresses.
WEP Encryption
WEP (Wired Equivalent Privacy) encrypts data frames before transmitting over the wireless network to help keep network communications private.
IEEE 802.1x Network Security
The ZyAIR supports the IEEE 802.1x standard to enhance user authentication. Use the built-in user profile database to authenticate up to 32 users using MD5 encryption. Use an EAPcompatible RADIUS (RFC2138, 2139 - Remote Authentication Dial In User Service) server to authenticate a limitless number of users using EAP (Extensible Authentication Protocol).
EAP is an authentication protocol that supports multiple types of authentication.
Wireless Association List
With the wireless association list, you can see the list of the wireless stations that are currently using the ZyAIR to access your wired network.
Chapter 1 Getting to Know Your ZyAIR 33
G-3000H User’s Guide
Wireless LAN Channel Usage
The Wireless Channel Usage screen displays whether the radio channels are used by other wireless devices within the transmission range of the ZyAIR. This allows you to select the channel with minimum interference for your ZyAIR.
Full Network Management
The embedded web configurator is an all-platform web-based utility that allows you to easily access the ZyAIR’s management settings. Most functions of the ZyAIR are also software configurable via the SMT (System Management Terminal) interface. The SMT is a menudriven interface that you can access from a terminal emulator over a telnet connection.
Logging and Tracing
• Built-in message logging and packet tracing.
• Unix syslog facility support.
Embedded FTP and TFTP Servers
The embedded FTP and TFTP servers enable fast firmware upgrades as well as configuration file backups and restoration.
Text File Based Auto Configuration
Administrators can use text configuration files to configure the wireless LAN settings for multiple APs. The AP can automatically get a configuration file from a TFTP server at start up or after renewing DHCP client information. See
Appendix M on page 273 for details.
SNMP
SNMP (Simple Network Management Protocol) is a protocol used for exchanging management information between network devices. SNMP is a member of the TCP/IP protocol suite. Your ZyAIR supports SNMP agent functionality, which allows a manger station to manage and monitor the ZyAIR through the network. The ZyAIR supports SNMP version one (SNMPv1) and version two c (SNMPv2c).
Wireless LAN Manager
Administrators can use ZyXEL’s Wireless LAN Manager (WLM) software to simplify SNMP based firmware and configuration file upgrades on the AP. WLM is an Element Manager
System (EMS) plug-in for SNMPc management software. WLM uses ZyXEL’s proprietary
Management Information Base (MIB). The proprietary MIB file is included on the CD with the WLM. You can also find it in the zipped file that contains the current firmware file. See
for details on WLM and the proprietary MIBs.
34 Chapter 1 Getting to Know Your ZyAIR
G-3000H User’s Guide
1.3 Applications for the ZyAIR
Here are some ZyAIR application examples.
The ZyAIR can be configured using the following WLAN operating modes
1 AP
2 AP+Bridge
3 Bridge/Repeater
Applications for each operating mode are shown below.
Note: A different channel should be configured for each WLAN interface to reduce the effects of radio interference.
1.3.1 Access Point
The ZyAIR is an ideal access solution for wireless Internet connection. A typical Internet access application for your ZyAIR is shown as follows. Stations A, B and C can access the wired network through the ZyAIRs.
Figure 3 Access Point Application
1.3.2 Multiple ESS
The ZyAIR’s Multiple ESS function allows multiple ESSs to be configured on just one access point (the ZyAIR). Wireless stations can use different ESSIDs to associate with the same AP.
Only wireless stations with the same ESSID can communicate with each other.
In this application example, wireless stations 1 and 2 both associate with the ZyAIR but cannot communicate with each other as they belong to different ESSs. Stations 1, 3 and 4 can communicate with each other. Similarly, stations 2, 5 and 6 can communicate with each other.
Chapter 1 Getting to Know Your ZyAIR 35
G-3000H User’s Guide
Station 1 relays communications via the ZyAIR within the Multi-ESS coverage area and with
AP X if it moves to the RD ESS coverage area. Similarly, Station 2 relays communications via the ZyAIR within the Multi-ESS coverage area and with AP Y if it moves to the Sales ESS coverage area.
You cannot configure WPA on your ZyAIR in Multiple ESS mode.
Figure 4 Multiple ESS Application
1.3.3 AP + Bridge
In AP+Bridge mode, the ZyAIR supports both AP ( A and B can connect to the wired network through X ) and bridge ( X can communicate with Y ) connection at the same time.
When the ZyAIR is in AP + Bridge mode, the traffic between ZyAIRs (the WDS) is not encrypted. The security settings on the ZyAIR refer to the traffic between the wireless station and the ZyAIR.
36 Chapter 1 Getting to Know Your ZyAIR
Figure 5 AP+Bridge Application
G-3000H User’s Guide
1.3.4 Bridge / Repeater
The ZyAIR can act as a wireless network bridge and establish wireless links with other APs. In bridge mode, the ZyAIR’s ( A and B ) are connected to independent wired networks and have a bridge ( A can communicate with B ) connection at the same time. A ZyAIR in repeater mode
( C ) has no Ethernet connection. When the ZyAIR is in the bridge mode, you should enable
STP to prevent bridge loops.
When the ZyAIR is in Bridge/Repeater mode, you don’t have to enter a pre-shared key, but the traffic between devices won’t be encrypted if you don’t. The peer bridge must use the same pre-shared key and encryption method.
The ZyAIR in AP+Bridge mode cannot connect to another ZyAIR in Bridge/Repeater mode that uses manual WEP keys with 64-bit or 128-bit WEP encryption.
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Figure 6 Bridge Application
Figure 7 Repeater Application
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C H A P T E R 2
Introducing the Web
Configurator
This chapter describes how to access the ZyAIR web configurator and provides an overview of its screens. The default IP address of the ZyAIR is 192.168.1.2.
2.1 Accessing the ZyAIR Web Configurator
1 Make sure your ZyAIR hardware is properly connected and prepare your computer/ computer network to connect to the ZyAIR (refer to the Quick Start Guide).
2 L aunch your web browser.
3 Type "192.168.1.2" as the URL.
4 Type "1234" (default) as the password and click Login . In some versions, the default password appears automatically - if this is the case, click Login .
5 You should see a screen asking you to change your password (highly recommended) as shown next. Type a new password (and retype it to confirm) and click Apply or click
Ignore .
Note: If you do not change the password, the following screen appears every time you login.
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Figure 8 Change Password Screen
6 Click Apply in the Replace Certificate screen to create a certificate using your ZyAIR’s
MAC address that will be specific to this device.
Figure 9 Replace Certificate Screen
40
You should now see the MAIN MENU screen.
Note: The management session automatically times out when the time period set in the Administrator Inactivity Timer field expires (default five minutes). Simply log back into the ZyAIR if this happens to you.
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2.2 Resetting the ZyAIR
If you forget your password or cannot access the web configurator, you will need to use the
RESET button on the side panel of the ZyAIR. This replaces the current configuration file with the factory-default configuration file. This means that you will lose all configurations that you had previously. The password will be reset to 1234.
2.2.1 Methods of Restoring Factory-Defaults
You can erase the current configuration and restore factory defaults in three ways:
Use the RESET button on the side panel of the ZyAIR to upload the default configuration file.
Hold this button in for about 10 seconds (the lights will begin to blink). Use this method for cases when the password or IP address of the ZyAIR is not known.
Use the web configurator to restore defaults (refer to
Transfer the configuration file to your ZyAIR using FTP. See later in the part on SMT configuration for more information.
2.3 Navigating the ZyAIR Web Configurator
We use the G-3000H web configurator in this guide as an example. The web configurator screens for your model may vary slightly for different ZyAIR models.
The following summarizes how to navigate the web configurator from the MAIN MENU screen.
Note: Follow the instructions you see in the MAIN MENU screen or click the icon (located in the top right corner of most screens) to view online help.
The icon does not appear in the MAIN MENU screen.
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Figure 10 The MAIN MENU Screen of the Web Configurator
42
Click WIZARD SETUP for initial configuration including general setup, Wireless LAN setup and IP address assignment.
Click the links under ADVANCED to configure advanced features such as SYSTEM
(General Setup, Password and Time Zone), WIRELESS (Wireless, SSID, Security, RADIUS,
Layer-2 Isolation, MAC Filter, Roaming, Local User Database), IP , REMOTE MGNT
(Telnet, FTP, WWW and SNMP), CERTIFICATES ( My Certificates , Trusted CAs ), LOGS
(View reports and Log Settings) and VLAN .
Click MAINTENANCE to view information about your ZyAIR or upgrade configuration/ firmware files. Maintenance includes Status (Statistics), Association List , Channel Usage , F/
W (firmware) Upload , Configuration (Backup, Restore and Default) and Restart
Click LOGOUT at any time to exit the web configurator
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C H A P T E R 3
Wizard Setup
This chapter provides information on the Wizard Setup screens in the web configurator.
3.1 Wizard Setup Overview
The web configurator’s setup wizard helps you configure your ZyAIR for wireless stations to access your wired LAN.
3.1.1 Channel
A channel is the radio frequency(ies) used by IEEE 802.11b and IEEE 802.11g wireless devices. Channels available depend on your geographical area. You may have a choice of channels (for your region) so you should use a different channel than an adjacent AP (access point) to reduce interference. Interference occurs when radio signals from different access points overlap causing interference and degrading performance.
Adjacent channels partially overlap however. To avoid interference due to overlap, your AP should be on a channel at least five channels away from a channel that an adjacent AP is using.
For example, if your region has 11 channels and an adjacent AP is using channel 1, then you need to select a channel between 6 or 11.
The ZyAIR’s “Scan” function is especially designed to automatically scan for a channel with the least interference.
3.1.2 ESS ID
An Extended Service Set (ESS) is a group of access points connected to a wired LAN on the same subnet. An SS ID uniquely identifies each set. All access points and their associated wireless stations in the same set must have the same SSID.
3.1.3 WEP Encryption
WEP (Wired Equivalent Privacy) encrypts data frames before transmitting over the wireless network. WEP encryption scrambles the data transmitted between the wireless stations and the access points to keep network communications private. It encrypts unicast and multicast communications in a network. Both the wireless stations and the access points must use the same WEP key for data encryption and decryption.
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3.2 Wizard Setup: General Setup
General Setup contains administrative and system-related information.
Figure 11 Wizard 1: General Setup
The following table describes the labels in this screen.
Table 3 Wizard 1: General Setup
LABEL
System Name
Domain Name
Next
DESCRIPTION
It is recommended you type your computer's "Computer name".
In Windows 95/98 click Start , Settings , Control Panel , Network . Click the
Identification tab, note the entry for the Computer Name field and enter it as the
System Name .
In Windows 2000, click Start , Settings , Control Panel and then double-click
System . Click the Network Identification tab and then the Properties button.
Note the entry for the Computer name field and enter it as the System Name .
In Windows XP, click Start , My Computer , View system information and then click the Computer Name tab. Note the entry in the Full computer name field and enter it as the ZyAIR System Name .
This name can be up to 30 alphanumeric characters long. Spaces are not allowed, but dashes "-" and underscores "_" are accepted.
This is not a required field. Leave this field blank or enter the domain name here if you know it.
Click Next to proceed to the next screen.
3.3 Wizard Setup: Wireless LAN
Use the second wizard screen to set up the wireless LAN.
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Figure 12 Wizard 2: Wireless LAN Setup
G-3000H User’s Guide
The following table describes the labels in this screen.
Table 4 Wizard 2: Wireless LAN Setup
LABEL DESCRIPTION
Wireless LAN Setup
Name (SSID)
Choose Channel ID To manually set the ZyAIR to use a channel, select a channel from the dropdown list box. Open the Channel Usage screen to make sure the channel is not already used by another AP or independent peer-to-peer wireless network.
To have the ZyAIR automatically select a channel, click Scan instead.
Scan
Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the wireless LAN.
If you change this field on the ZyAIR, make sure all wireless stations use the same Name (SSID) in order to access the network.
WEP Encryption
ASCII
Hex
Click this button to have the ZyAIR automatically scan for and select a channel with the least interference.
Select Disable allows all wireless computers to communicate with the access points without any data encryption.
Select 64-bit WEP or 128-bit WEP to allow data encryption.
Select this option in order to enter ASCII characters as the WEP keys.
Select this option to enter hexadecimal characters as the WEP keys.
The preceding 0x is entered automatically.
Key 1 to Key 4
Back
Next
The WEP keys are used to encrypt data. Both the ZyAIR and the wireless stations must use the same WEP key for data transmission.
If you chose 64-bit WEP , then enter any 5 ASCII characters or 10 hexadecimal characters ("0-9", "A-F").
If you chose 128-bit WEP , then enter 13 ASCII characters or 26 hexadecimal characters ("0-9", "A-F").
You must configure all four keys, but only one key can be activated at any one time. The default key is key 1.
Click Back to return to the previous screen.
Click Next to continue.
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3.4 Wizard Setup: IP Address
The third wizard screen allows you to configure IP address assignment.
3.4.1 IP Address Assignment
Every computer on the Internet must have a unique IP address. If your networks are isolated from the Internet, for instance, only between your two branch offices, you can assign any IP addresses to the hosts without problems. However, the Internet Assigned Numbers Authority
(IANA) has reserved the following three blocks of IP addresses specifically for private networks.
Table 5 Private IP Address Ranges
10.0.0.0 - 10.255.255.255
172.16.0.0 - 172.31.255.255
192.168.0.0 - 192.168.255.255
You can obtain your IP address from the IANA, from an ISP or have it assigned by a private network. If you belong to a small organization and your Internet access is through an ISP, the
ISP can provide you with the Internet addresses for your local networks. On the other hand, if you are part of a much larger organization, you should consult your network administrator for the appropriate IP addresses.
Note: Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines above. For more information on address assignment, please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466,
Guidelines for Management of IP Address Space.
3.4.2 IP Address and Subnet Mask
Similar to the way houses on a street share a common street name, so too do computers on a
LAN share one common network number.
Where you obtain your network number depends on your particular situation. If the ISP or your network administrator assigns you a block of registered IP addresses, follow their instructions in selecting the IP addresses and the subnet mask.
If the ISP did not explicitly give you an IP network number, then most likely you have a single user account and the ISP will assign you a dynamic IP address when the connection is established. The Internet Assigned Number Authority (IANA) reserved this block of addresses specifically for private use; please do not use any other number unless you are told otherwise.
Let's say you select 192.168.1.0 as the network number; which covers 254 individual addresses, from 192.168.1.1 to 192.168.1.254 (zero and 255 are reserved). In other words, the first three numbers specify the network number while the last number identifies an individual computer on that network.
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Once you have decided on the network number, pick an IP address that is easy to remember, for instance, 192.168.1.2, for your ZyAIR, but make sure that no other device on your network is using that IP address.
The subnet mask specifies the network number portion of an IP address. Your ZyAIR will compute the subnet mask automatically based on the IP address that you entered. You don't need to change the subnet mask computed by the ZyAIR unless you are instructed to do otherwise.
Figure 13 Wizard 3: IP Address Assignment
The following table describes the labels in this screen.
Table 6 Wizard 3: IP Address Assignment
LABEL
IP Address Assignment
DESCRIPTION
Get automatically from
DHCP
Use fixed IP address
IP Address
IP Subnet Mask
Gateway IP Address
Back
Finish
Select this option if your ZyAIR is using a dynamically assigned IP address from a DHCP server each time.
Note: You must know the IP address assigned to the ZyAIR (by the DHCP server) to access the ZyAIR again.
Select this option if your ZyAIR is using a static IP address. When you select this option, fill in the fields below.
Enter the IP address of your ZyAIR in dotted decimal notation.
Note: If you changed the ZyAIR's IP address, you must use the new IP address if you want to access the web configurator again.
Type the subnet mask.
Type the IP address of the gateway. The gateway is an immediate neighbor of your ZyAIR that will forward the packet to the destination. The gateway must be a router on the same segment as your ZyAIR's LAN or WAN port.
Click Back to return to the previous screen.
Click Finish to proceed to complete the Wizard setup.
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3.5 Basic Setup Complete
When you click Finish in the Wizard 3 IP Address Assignment screen, a warning window display as shown. Click OK to close the window and log in to the web configurator again using the new IP address if you change the default IP address (192.168.1.2).
You have successfully set up the ZyAIR. A screen displays prompting you to close the web browser.
Click Yes . Otherwise, click No and the congratulations screen shows next.
Figure 14 Wizard 4: Setup Complete
Well done! You have successfully set up your ZyAIR to operate on your network and access the Internet.
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C H A P T E R 4
System Screens
4.1 System Overview
This section provides information on general system setup.
4.2 Configuring General Setup
Click the SYSTEM link under ADVANCED to open the General screen.
Figure 15 System General Setup
The following table describes the labels in this screen.
Table 7 System General Setup
LABEL
General Setup
System Name
DESCRIPTION
Domain Name
Type a descriptive name to identify the ZyAIR in the Ethernet network.
This name can be up to 30 alphanumeric characters long. Spaces are not allowed, but dashes "-" and underscores "_" are accepted.
This is not a required field. Leave this field blank or enter the domain name here if you know it.
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Table 7 System General Setup
LABEL DESCRIPTION
Administrator
Inactivity Timer
Type how many minutes a management session (either via the web configurator or SMT) can be left idle before the session times out.
The default is 5 minutes. After it times out you have to log in with your password again. Very long idle timeouts may have security risks.
A value of "0" means a management session never times out, no matter how long it has been left idle (not recommended).
System DNS Servers
First DNS Server
Second DNS Server
Third DNS Server
Apply
Reset
Select From DHCP if your DHCP server dynamically assigns DNS server information (and the ZyAIR's Ethernet IP address). The field to the right displays the (read-only) DNS server IP address that the DHCP assigns.
Select User-Defined if you have the IP address of a DNS server. Enter the
DNS server's IP address in the field to the right. If you chose User-Defined , but leave the IP address set to 0.0.0.0, User-Defined changes to None after you click Apply . If you set a second choice to User-Defined , and enter the same IP address, the second User-Defined changes to None after you click Apply .
Select None if you do not want to configure DNS servers. If you do not configure a DNS server, you must know the IP address of a machine in order to access it.
The default setting is None .
Click Apply to save your changes back to the ZyAIR.
Click Reset to reload the previous configuration for this screen.
4.3 Configuring Password
To change your ZyAIR’s password (recommended), click the SYSTEM link under
ADVANCED and then the Password tab. The screen appears as shown. This screen allows you to change the ZyAIR’s password.
If you forget your password (or the ZyAIR IP address), you will need to reset the ZyAIR. See the Resetting the ZyAIR section for details
Figure 16 Password .
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The following table describes the labels in this screen.
Table 8 Password
LABEL
Old Password
New Password
Retype to Confirm
Apply
Reset
DESCRIPTIONS
Type in your existing system password (1234 is the default password).
Type your new system password (up to 31 characters). Note that as you type a password, the screen displays an asterisk (*) for each character you type.
Retype your new system password for confirmation.
Click Apply to save your changes back to the ZyAIR.
Click Reset to reload the previous configuration for this screen.
4.4 Configuring Time Setting
To change your ZyAIR’s time and date, click the SYSTEM link under ADVANCED and then the Time Setting tab. The screen appears as shown. Use this screen to configure the ZyAIR’s time based on your local time zone.
Figure 17 Time Setting
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The following table describes the labels in this screen.
Table 9 Time Setting
LABEL DESCRIPTION
Time Protocol Select the time service protocol that your time server sends when you turn on the ZyAIR. Not all time servers support all protocols, so you may have to check with your ISP/network administrator or use trial and error to find a protocol that works.
The main difference between them is the format.
Daytime (RFC 867) format is day/month/year/time zone of the server.
Time (RFC 868) format displays a 4-byte integer giving the total number of seconds since 1970/1/1 at 0:0:0.
The default, NTP (RFC 1305), is similar to Time (RFC 868).
Select None to enter the time and date manually.
Time Server Address Enter the IP address or the URL of your time server. Check with your ISP/ network administrator if you are unsure of this information.
Current Time
(hh:mm:ss)
This field displays the time of your ZyAIR.
Each time you reload this page, the ZyAIR synchronizes the time with the time server.
New Time (hh:mm:ss) This field displays the last updated time from the time server.
When you select None in the Time Protocol field, enter the new time in this field and then click Apply .
Current Date (yyyy/ mm/dd)
This field displays the date of your ZyAIR.
Each time you reload this page, the ZyAIR synchronizes the date with the time server.
New Date (yyyy/mm/ dd)
Time Zone
Daylight Savings
This field displays the last updated date from the time server.
When you select None in the Time Protocol field, enter the new date in this field and then click Apply .
Choose the time zone of your location. This will set the time difference between your time zone and Greenwich Mean Time (GMT).
Select this option if you use daylight savings time. Daylight saving is a period from late spring to early fall when many countries set their clocks ahead of normal local time by one hour to give more daytime light in the evening.
Start Date (mm-dd)
End Date (mm-dd)
Apply
Reset
Enter the month and day that your daylight-savings time starts on if you selected Daylight Savings .
Enter the month and day that your daylight-savings time ends on if you selected Daylight Savings .
Click Apply to save your changes back to the ZyAIR.
Click Reset to reload the previous configuration for this screen.
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C H A P T E R 5
Wireless Configuration
This chapter discusses how to configure Wireless screens on the ZyAIR.
5.1 Wireless LAN Overview
This section introduces the wireless LAN (WLAN) and some basic scenarios.
5.1.1 BSS
A Basic Service Set (BSS) exists when all communications between wireless stations or between a wireless station and a wired network client go through one access point (AP).
Intra-BSS traffic is traffic between wireless stations in the BSS. When Intra-BSS is enabled, wireless station A and B can access the wired network and communicate with each other.
When Intra-BSS is disabled, wireless station A and B can still access the wired network but cannot communicate with each other.
Figure 18 Basic Service set
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5.1.2 ESS
An Extended Service Set (ESS) consists of a series of overlapping BSSs, each containing an access point, with each access point connected together by a wired network. This wired connection between APs is called a Distribution System (DS). An ESSID (ESS IDentification) uniquely identifies each ESS. All access points and their associated wireless stations within the same ESS must have the same ESSID in order to communicate.
Figure 19 Extended Service Set
5.2 Wireless LAN Basics
Refer also to the Wizard Setup chapter for more background information on Wireless LAN features, such as channels.
See the Wireless LANs Appendix for information on the following:
• Wireless LAN Topologies
• Channel
• RTS/CTS
• Fragmentation Threshold
• Preamble Type
• IEEE 802.1x
• RADIUS
• Types of Authentication
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• WPA
• Security Parameters Summary
5.3 WMM QoS
WMM (Wi-Fi MultiMedia) QoS (Quality of Service) ensures quality of service in wireless networks for multimedia applications. WMM QoS prioritizes wireless traffic according to the delivery requirements of the individual and applications. WMM QoS is a part of the IEEE
802.11e QoS enhancement to certified Wi-Fi wireless networks.
On APs without WMM QoS, all traffic streams are given the same access throughput to the wireless network. If the introduction of another traffic stream creates a data transmission demand that exceeds the current network capacity, then the new traffic stream reduces the throughput of the other traffic streams.
The ZyAIR uses WMM QoS to prioritize traffic streams according to the needs of the application. The ZyAIR automatically determines the priority to use for an individual traffic stream. This prevents reductions in data transmission for applications that are sensitive to jitter
(variations in delay).
5.3.1 WMM QoS Priorities
The following table describes the WMM QoS priority levels that the ZyAIR uses.
Table 10 WMM QoS Priorities
PRIORITY LEVEL DESCRIPTION voice video besteffort background
Typically used for traffic that is especially sensitive to jitter. Use this priority to reduce latency for improved voice quality.
Typically used for traffic which has some tolerance for jitter but needs to be prioritized over other data traffic.
Typically used for traffic from applications or devices that lack QoS capabilities. Use best effort priority for traffic that is less sensitive to latency, but is affected by long delays, such as Internet surfing.
This is typically used for non-critical traffic such as bulk transfers and print jobs that are allowed but that should not affect other applications and users. Use background priority for applications that do not have strict latency and throughput requirements.
5.3.2 Type Of Service (ToS)
Network traffic can be classified by setting the ToS (Type Of Service) values at the data source (for example, at the Prestige) so a server can decide the best method of delivery, that is the least cost, fastest route and so on.
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5.3.2.1 DiffServ
DiffServ is a class of service (CoS) model that marks packets so that they receive specific perhop treatment at DiffServ-compliant network devices along the route based on the application types and traffic flow. Packets are marked with DiffServ Code Points (DSCPs) indicating the level of service desired. This allows the intermediary DiffServ-compliant network devices to handle the packets differently depending on the code points without the need to negotiate paths or remember state information for every flow. In addition, applications do not have to request a particular service or give advanced notice of where the traffic is going.
5.3.2.2 DSCP and Per-Hop Behavior
DiffServ defines a new DS (Differentiated Services) field to replace the Type of Service
(TOS) field in the IP header. The DS field contains a 2-bit unused field and a 6-bit DSCP field which can define up to 64 service levels. The following figure illustrates the DS field.
DSCP is backward compatible with the three precedence bits in the ToS octet so that non-
DiffServ compliant, ToS-enabled network device will not conflict with the DSCP mapping.
Figure 20 DiffServ: Differentiated Service Field
DSCP
(6-bit)
Unused
(2-bit)
The DSCP value determines the forwarding behavior, the PHB (Per-Hop Behavior), that each packet gets across the DiffServ network. Based on the marking rule, different kinds of traffic can be marked for different priorities of forwarding. Resources can then be allocated according to the DSCP values and the configured policies.
5.3.3 ToS (Type of Service) and WMM QoS
The DSCP value of outgoing packets is between 0 and 255. 0 is the default priority. WMM
QoS checks the DSCP value in the header of data packets. It gives the traffic a priority according to this number.
In order to control which priority level is given to traffic, the device sending the traffic must set the DSCP value in the header. If the DSCP value is not specified, then the traffic is treated as best-effort. This means the wireless clients and the devices with which they are communicating must both set the DSCP value in order to make the best use of WMM QoS. A
Voice over IP (VoIP) device for example may allow you to define the DSCP value.
The following table lists which WMM QoS priority level the ZyAIR uses for specific DSCP values.
Table 11 ToS and IEEE 802.1d to WMM QoS Priority Level Mapping
DSCP VALUE
224, 192
160, 128
WMM QOS PRIORITY LEVEL voice video
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Table 11 ToS and IEEE 802.1d to WMM QoS Priority Level Mapping
DSCP VALUE
96, 0
64, 32 a
WMM QOS PRIORITY LEVEL besteffort background a. The ZyAIR also uses best effort for any DSCP value for which another
WMM QoS priority is not specified (255, 158 or 37 for example).
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5.4 Spanning Tree Protocol (STP)
STP detects and breaks network loops and provides backup links between switches, bridges or routers. It allows a bridge to interact with other STP-compliant bridges in your network to ensure that only one route exists between any two stations on the network.
5.4.1 Rapid STP
The ZyAIR uses IEEE 802.1w RSTP (Rapid Spanning Tree Protocol) that allow faster convergence of the spanning tree (while also being backwards compatible with STP-only aware bridges). Using RSTP topology change information does not have to propagate to the root bridge and unwanted learned addresses are flushed from the filtering database. In RSTP, the port states are Discarding, Learning, and Forwarding.
5.4.2 STP Terminology
The root bridge is the base of the spanning tree; it is the bridge with the lowest identifier value
(MAC address).
Path cost is the cost of transmitting a frame onto a LAN through that port. It is assigned according to the speed of the link to which a port is attached. The slower the media, the higher the cost - see the following table.
Table 12 STP Path Costs
Path Cost
Path Cost
Path Cost
Path Cost
Path Cost
Path Cost
LINK SPEED
4Mbps
10Mbps
16Mbps
100Mbps
1Gbps
10Gbps
RECOMMENDED
VALUE
RECOMMENDED
RANGE
4
2
250
100
62
19
100 to 1000
50 to 600
40 to 400
10 to 60
3 to 10
1 to 5
ALLOWED
RANGE
1 to 65535
1 to 65535
1 to 65535
1 to 65535
1 to 65535
1 to 65535
On each bridge, the root port is the port through which this bridge communicates with the root.
It is the port on this switch with the lowest path cost to the root (the root path cost). If there is no root port, then this bridge has been accepted as the root bridge of the spanning tree network.
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For each LAN segment, a designated bridge is selected. This bridge has the lowest cost to the root among the bridges connected to the LAN.
5.4.3 How STP Works
After a bridge determines the lowest cost-spanning tree with STP, it enables the root port and the ports that are the designated ports for connected LANs, and disables all other ports that participate in STP. Network packets are therefore only forwarded between enabled ports, eliminating any possible network loops.
STP-aware bridges exchange Bridge Protocol Data Units (BPDUs) periodically. When the bridged LAN topology changes, a new spanning tree is constructed.
Once a stable network topology has been established, all bridges listen for Hello BPDUs
(Bridge Protocol Data Units) transmitted from the root bridge. If a bridge does not get a Hello
BPDU after a predefined interval (Max Age), the bridge assumes that the link to the root bridge is down. This bridge then initiates negotiations with other bridges to reconfigure the network to re-establish a valid network topology.
5.4.4 STP Port States
STP assigns five port states (see next table) to eliminate packet looping. A bridge port is not allowed to go directly from blocking state to forwarding state so as to eliminate transient loops.
Table 13 STP Port States
PORT STATES DESCRIPTIONS
Disabled
Blocking
Listening
Learning
Forwarding
STP is disabled (default).
Only configuration and management BPDUs are received and processed.
All BPDUs are received and processed.
All BPDUs are received and processed. Information frames are submitted to the learning process but not forwarded.
All BPDUs are received and processed. All information frames are received and forwarded.
5.5 Wireless Screen Overview
The following is a list of the screens you can configure on the ZyAIR.
58
1 Configure the ZyAIR as an AP, an AP+Bridge, a Bridge/Repeater or to use multiple ESS in the Wireless screen. You can also select an SSID Profile in the Wireless screen.
2 Use the SSID screens to view and create SSID profiles.
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3 Use the Security screen to configure wireless profiles. For each profile you can configure a name and one of the wireless security modes.
4 Use the RADIUS screen to configure RADIUS authentication and accounting settings.
5 Use the Layer-2 Isolation screen to prevent wireless clients associated with your ZyAIR from communicating with other wireless clients, AP’s, computers or routers in a network.
6 Use the MAC Filter screen to restrict access to your wireless network by MAC address.
7 Use the Roaming screen to configure the ZyAIR so that in a network environment with multiple access points, wireless stations are able to switch from one access point to another as they move between the coverage areas.
8 Configure the built-in authentication database in the Local User Database screen.
5.6 Configuring Wireless
Click the WIRELESS link under ADVANCED to display the Wireless screen. The screen varies depending upon the operating mode you select.
5.6.1 Access Point Mode
Select Access Point as the Operating Mode to display the screen as shown next.
Figure 21 Wireless: Access Point
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The following table describes the general wireless LAN labels in this screen.
Table 14 Wireless: Access Point
LABEL DESCRIPTION
Operating Mode Select the operating mode from the drop-down list. The options are Access Point ,
Bridge/Repeater , AP+Bridge and MESSID .
Choose Channel
ID
Set the operating frequency/channel depending on your particular region.
To manually set the ZyAIR to use a channel, select a channel from the drop-down list box. Click MAINTENANCE and then the Channel Usage tab to open the
Channel Usage screen to make sure the channel is not already used by another AP or independent peer-to-peer wireless network.
To have the ZyAIR automatically select a channel, click Scan instead.
Refer to the Wizard Setup chapter for more information on channels.
Scan
RTS/CTS
Threshold
Click this button to have the ZyAIR automatically scan for and select a channel with the least interference.
(Request To Send) The threshold (number of bytes) for enabling RTS/CTS handshake. Data with its frame size larger than this value will perform the RTS/CTS handshake. Setting this attribute to be larger than the maximum MSDU (MAC service data unit) size turns off the RTS/CTS handshake. Setting this attribute to zero turns on the RTS/CTS handshake. Enter a value between 800 and 2432 .
Fragmentation
Threshold
The threshold (number of bytes) for the fragmentation boundary for directed messages. It is the maximum data fragment size that can be sent. Enter a value between 800 and 2432 .
SSID Profile The SSID (Service Set IDentity) identifies the Service Set with which a wireless station is associated. Wireless stations associating to the access point (AP) must have the same SSID. Select an SSID Profile from the drop-down list box.
Configure SSID profiles in the SSID screen.
Note: If you are configuring the ZyAIR from a computer connected to the wireless LAN and you change the ZyAIR’s SSID or security settings, you will lose your wireless connection when you press
Apply to confirm. You must then change the wireless settings of your computer to match the ZyAIR’s new settings.
Hide Name
(SSID)
Enable Intra-
BSS Traffic
Enable
Breathing LED
Enable
Spanning Tree
Control (STP)
Select this check box to hide the SSID in the outgoing beacon frame so a station cannot obtain the SSID through scanning using a site survey tool.
Intra-BSS traffic is traffic between wireless stations in the same BSS. Select this check box to enable Intra-BSS traffic.
Select this check box to enable the Breathing LED, also known as the ZyAIR LED.
The blue ZyAIR LED is on when the ZyAIR is on and blinks (or breaths) when data is being transmitted to/from its wireless stations.
Clear the check box to turn this LED off even when the ZyAIR is on and data is being transmitted/received.
(R)STP detects and breaks network loops and provides backup links between switches, bridges or routers. It allows a bridge to interact with other (R)STP compliant bridges in your network to ensure that only one path exists between any two stations on the network. Select the check box to activate STP on the ZyAIR.
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Table 14 Wireless: Access Point
LABEL
Output Power
Preamble
802.11 Mode
Max. Frame
Burst
Apply
Reset
DESCRIPTION
Set the output power of the ZyAIR in this field. If there is a high density of APs within an area, decrease the output power of the ZyAIR to reduce interference with other
APs. Select one of the following 100%(Full Power) , 50% , 25% or 12.5% . These percentages represent the following power ranges;
• 100%(Full Power) <11b>17dBm/<11g>13dBm (<11b>50mW/<11g>20mW),
• 50% <11b>15dBm/<11g>11dBm (<11b>32mW/<11g>12.6mW),
• 25% <11b>13dBm/<11g>9dBm (<11b>20mW/<11g>7.9mW),
• 12.5% <11b>11dBm/<11g>7dBm (<11b>12.6mW/<11g>5mW).
Select a preamble type from the drop-down list menu. Choices are Long , Short and
Dynamic .
See the section on preamble for more information.
Select 802.11b Only to allow only IEEE 802.11b compliant WLAN devices to associate with the ZyAIR.
Select 802.11g Only to allow only IEEE 802.11g compliant WLAN devices to associate with the ZyAIR.
Select Mixed to allow either IEEE802.11b or IEEE802.11g compliant WLAN devices to associate with the ZyAIR. The transmission rate of your ZyAIR might be reduced.
Enable Maximum Frame Burst to help eliminate collisions in mixed-mode networks
(networks with both IEEE 802.11g and IEEE 802.11b traffic) and enhance the performance of both pure IEEE 802.11g and mixed IEEE 802.11b/g networks.
Maximum Frame Burst sets the maximum time, in microseconds, that the ZyAIR transmits IEEE 802.11g wireless traffic only.
Type the maximum frame burst between 0 and 1800 (650, 1000 or 1800 recommended). Enter 0 to disable this feature.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
5.6.2 Bridge/Repeater Mode
The ZyAIR can act as a wireless network bridge and establish wireless links with other APs.
You need to know the MAC address of the peer device, which also must be in bridge mode.
The ZyAIR can establish up to five wireless links with other APs.
In the example below, when both ZyAIRs are in Bridge/Repeater mode, they form a WDS
(Wireless Distribution System) allowing the computers in LAN 1 to connect to the computers in LAN 2.
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Figure 22 Bridging Example
Be careful to avoid bridge loops when you enable bridging in the ZyAIR. Bridge loops cause broadcast traffic to circle the network endlessly, resulting in possible throughput degradation and disruption of communications. The following examples show two network topologies that can lead to this problem:
If two or more ZyAIRs (in bridge mode) are connected to the same hub as shown next.
Figure 23 Bridge Loop: Two Bridges Connected to Hub
62
If your ZyAIR (in bridge mode) is connected to a wired LAN while communicating with another wireless bridge that is also connected to the same wired LAN as shown next.
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Figure 24 Bridge Loop: Bridge Connected to Wired LAN
G-3000H User’s Guide
To prevent bridge loops, ensure that you enable STP in the Wireless screen or your ZyAIR is not set to bridge mode while connected to both wired and wireless segments of the same LAN.
Click the WIRELESS link under ADVANCED . Select Bridge/Repeater as the Operating
Mode to have the ZyAIR act as a wireless bridge only.
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Figure 25 Wireless: Bridge/Repeater
64
The following table describes the bridge labels in this screen.
Table 15 Wireless: Bridge/Repeater
LABEL DESCRIPTIONS
Operating Mode Select Bridge/Repeater in this field to display the screen as shown.
Choose Channel ID Set the operating frequency/channel depending on your particular region.
To manually set the ZyAIR to use a channel, select a channel from the dropdown list box. Click MAINTENANCE and then the Channel Usage tab to open the Channel Usage screen to make sure the channel is not already used by another AP or independent peer-to-peer wireless network.
To have the ZyAIR automatically select a channel, click Scan instead.
Refer to the Wizard Setup chapter for more information on channels.
Scan Click this button to have the ZyAIR automatically scan for and select a channel with the least interference.
RTS/CTS Threshold (Request To Send) The threshold (number of bytes) for enabling RTS/CTS handshake. Data with its frame size larger than this value will perform the RTS/
CTS handshake. Setting this attribute to be larger than the maximum MSDU
(MAC service data unit) size turns off the RTS/CTS handshake. Setting this attribute to zero turns on the RTS/CTS handshake. Enter a value between 800 and 2432 .
Fragmentation
Threshold
The threshold (number of bytes) for the fragmentation boundary for directed messages. It is the maximum data fragment size that can be sent. Enter a value between 800 and 2432 .
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Table 15 Wireless: Bridge/Repeater
LABEL DESCRIPTIONS
Enable WDS Security Select the check box to enable WDS on your ZyAIR. A Wireless Distribution
System (WDS) is a wireless connection between two or more APs.
When you select the check box, you are prompted to type a Pre-Shared Key
(PSK). The ZyAIR uses TKIP to encrypt traffic on the WDS between AP’s.
Note: Other AP’s must use the same encryption method to enable WDS.
#
Active
Remote Bridge MAC
Address
PSK
This is the index number of the bridge connection.
Select the check box to enable the bridge connection. Otherwise, clear the check box to disable it.
Type the MAC address of the peer device in a valid MAC address format, that is, six hexadecimal character pairs, for example, 12:34:56:78:9a:bc.
Type a pre-shared key from 8 to 63 case-sensitive ASCII characters (including spaces and symbols).
See
Table 14 on page 60 for information on the other labels in this screen.
5.6.3 AP+Bridge Mode
Click the WIRELESS link under ADVANCED . Select AP+Bridge as the Operating Mode to display the screen as shown next. In this screen, you can configure the ZyAIR to function as an AP and bridge simultaneously. See the section on ZyAIR applications for more information.
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Figure 26 Wireless: AP+Bridge
See the tables describing the fields in the Access Point and Bridge/Repeater operating modes for descriptions of the fields in this screen.
5.6.4 Multiple ESS Mode
Select MESSID as the Operating Mode to display the screen. Refer to the chapter on
Multiple ESS and VLAN for configuration and detailed information. See the chapter on wireless security for details on the security settings.
Note: The following screens are configurable only in Access Point and AP+Bridge operating modes only.
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C H A P T E R 6
Wireless Security Configuration
This chapter describes how to use the Security , RADIUS and Local User Database screens to configure wireless security on your ZyAIR.
6.1 Wireless Security Overview
Wireless security is vital to your network to protect wireless communication between wireless stations, access points and the wired network.
Wireless security methods available on the ZyAIR are data encryption, wireless client authentication, restricting access by device MAC address and hiding the ZyAIR identity.
6.1.1 Encryption
• Use WPA(2) security if you have WPA(2)-aware wireless clients and a RADIUS server.
WPA has user authentication and improved data encryption over WEP.
• Use WPA(2)-PSK if you have WPA(2)-aware wireless clients but no RADIUS server.
• If you don’t have WPA(2)-aware wireless clients, then use WEP key encrypting. A higher bit key offers better security at a throughput trade-off. You can use manually enter
64-bit, or 128-bit WEP keys.
6.1.2 Authentication
WPA has user authentication and you can also configure IEEE 802.1x to use the built-in database (Local User Database) or a RADIUS server to authenticate wireless clients before joining your network.
• Use RADIUS authentication if you have a RADIUS server. See the appendices for information on protocols used when a client authenticates with a RADIUS server via the
ZyAIR.
• Use the Local User Database if you have less than 32 wireless clients in your network.
The ZyAIR uses MD5 encryption when a client authenticates with the Local User
Database
6.1.3 Restricted Access
The MAC Filter screen allows you to configure the AP to give exclusive access to devices
( Allow Association ) or exclude them from accessing the AP ( Deny Association ).
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6.1.4 Hide ZyAIR Identity
If you hide the ESSID, then the ZyAIR cannot be seen when a wireless client scans for local
APs. The trade-off for the extra security of “hiding” the ZyAIR may be inconvenience for some valid WLAN clients.
6.1.5 WEP Encryption
WEP encryption scrambles the data transmitted between the wireless stations and the access points to keep network communications private. It encrypts unicast and multicast communications in a network. Both the wireless stations and the access points must use the same WEP key.
Your ZyAIR allows you to configure up to four 64-bit or 128-bit WEP keys but only one key can be enabled at any one time.
6.2 Configuring WEP Encryption
In order to configure and enable WEP encryption; click the WIRELESS link under
ADVANCED to display the Wireless screen.
Note: The WEP Encryption , Authentication Method and the WEP key fields are not visible when you enable Dynamic WEP Key, WPA or WPA-PSK in the Security screen.
6.3 802.1x Overview
The IEEE 802.1x standard outlines enhanced security methods for both the authentication of wireless stations and encryption key management. Authentication can be done using the local user database internal to the ZyAIR (authenticate up to 32 users) or an external RADIUS server for an unlimited number of users.
6.4 EAP Authentication Overview
EAP (Extensible Authentication Protocol) is an authentication protocol that runs on top of the
IEEE802.1x transport mechanism in order to support multiple types of user authentication. By using EAP to interact with an EAP-compatible RADIUS server, the access point helps a wireless station and a RADIUS server perform authentication.
The type of authentication you use depends on the RADIUS server or the AP. The ZyAIR supports EAP-TLS, EAP-TTLS, EAP-MD5 and PEAP with RADIUS. Refer to the Types of
EAP Authentication appendix for descriptions on the common types.
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The following figure shows an overview of authentication when you specify a RADIUS server on your access point.
Figure 27 EAP Authentication
The details below provide a general description of how IEEE 802.1x EAP authentication works. For an example list of EAP-MD5 authentication steps, see the IEEE 802.1x appendix.
1 The wireless station sends a “start” message to the ZyAIR.
2 The ZyAIR sends a “request identity” message to the wireless station for identity information.
3 The wireless station replies with identity information, including username and password.
4 The RADIUS server checks the user information against its user profile database and determines whether or not to authenticate the wireless station.
6.5 Dynamic WEP Key Exchange
The AP maps a unique key that is generated with the RADIUS server. This key expires when the wireless connection times out, disconnects or reauthentication times out. A new WEP key is generated each time reauthentication is performed.
To use Dynamic WEP, enable and configure the RADIUS server and enable one of the
Dynamic WEP Security Modes in the Security screen. Ensure that the wireless station’s EAP type is configured to one of the following:
• EAP-TLS
• EAP-TTLS
• PEAP
Note: EAP-MD5 cannot be used with dynamic WEP key exchange.
6.6 Introduction to WPA
Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. Key differences between WPA and WEP are user authentication and improved data encryption.
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6.6.1 User Authentication
WPA applies IEEE 802.1x and Extensible Authentication Protocol (EAP) to authenticate wireless clients using an external RADIUS database. See later in this chapter and the appendices for more information on IEEE 802.1x, RADIUS, EAP and PEAP.
If you don’t have an external RADIUS server you should use WPA-PSK (WPA -Pre-Shared
Key) that only requires a single (identical) password entered into each access point, wireless gateway and wireless client. As long as the passwords match, a client will be granted access to a WLAN.
6.6.2 Encryption
WPA improves data encryption by using Temporal Key Integrity Protocol (TKIP), Message
Integrity Check (MIC) and IEEE 802.1x.
Temporal Key Integrity Protocol (TKIP) uses 128-bit keys that are dynamically generated and distributed by the authentication server. It includes a per-packet key mixing function, a
Message Integrity Check (MIC) named Michael, an extended initialization vector (IV) with sequencing rules, and a re-keying mechanism.
TKIP regularly changes and rotates the encryption keys so that the same encryption key is never used twice. The RADIUS server distributes a Pairwise Master Key (PMK) key to the
AP that then sets up a key hierarchy and management system, using the pair-wise key to dynamically generate unique data encryption keys to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients. This all happens in the background automatically.
The Message Integrity Check (MIC) is designed to prevent an attacker from capturing data packets, altering them and resending them. The MIC provides a strong mathematical function in which the receiver and the transmitter each compute and then compare the MIC. If they do not match, it is assumed that the data has been tampered with and the packet is dropped.
By generating unique data encryption keys for every data packet and by creating an integrity checking mechanism (MIC), TKIP makes it much more difficult to decode data on a Wi-Fi network than WEP, making it difficult for an intruder to break into the network.
The encryption mechanisms used for WPA and WPA-PSK are the same. The only difference between the two is that WPA-PSK uses a simple common password, instead of user-specific credentials. The common-password approach makes WPA-PSK susceptible to brute-force password-guessing attacks but it’s still an improvement over WEP as it employs an easier-touse, consistent, single, alphanumeric password.
6.6.3 WPA(2)-PSK Application Example
A WPA(2)-PSK application looks as follows.
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1 First enter identical passwords into the AP and all wireless clients. The Pre-Shared Key
(PSK) must consist of between 8 and 63 ASCII characters (including spaces and symbols).
2 The AP checks each wireless client's password and (only) allows it to join the network if the password matches.
3 The AP derives and distributes keys to the wireless clients.
4 The AP and wireless clients use the TKIP or AES encryption process to encrypt data exchanged between them.
Figure 28 WPA(2)-PSK Authentication
6.7 WPA(2) with RADIUS Application Example
You need the IP address of the RADIUS server, its port number (default is 1812), and the
RADIUS shared secret. A WPA(2) application example with an external RADIUS server looks as follows. “A” is the RADIUS server. “DS” is the distribution system.
1 The AP passes the wireless client’s authentication request to the RADIUS server.
2 The RADIUS server then checks the user's identification against its database and grants or denies network access accordingly.
3 The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then sets up a key hierarchy and management system, using the pair-wise key to dynamically generate unique data encryption keys to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients.
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Figure 29 WPA(2) with RADIUS Application Example
6.8 Security Modes
The following table describes the security modes you can configure.
Table 16 Security Modes
SECURITY MODE
None
WEP
802.1x-Only
802.1x-Dynamic64
802.1x-Dynamic128
802.1x-Static64
802.1x-Static128
WPA-PSK
WPA2-PSK
WPA2-PSK-MIX
WPA
WPA-MIX
WPA2
DESCRIPTION
Select this to have no data encryption.
Select this to use WEP encryption.
Select this to use 802.1x authentication with no data encryption.
Select this to use 802.1x authentication with a dynamic 64bit WEP key.
Select this to use 802.1x authentication with a dynamic 128bit WEP key.
Select this to use 802.1x authentication with a static 64bit WEP key and an authentication server.
Select this to use 802.1x authentication with a static 128bit WEP key and an authentication server.
Select this to use WPA with a pre-shared key.
Select this to use WPA2 with a pre-shared key.
Select this to use either WPA-PSK or WPA2-PSK depending on which security mode the wireless client uses.
Select this to use WPA.
Select this to use either WPA or 802.1x Only depending on which security mode the wireless client uses.
Select this to use WPA2.
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Table 16 Security Modes
SECURITY MODE
WPA2-MIX
No-Access
DESCRIPTION
Select this to use either WPA2 or WPA depending on which security mode the wireless client uses.
Select this to prevent wireless client access to the ZyAIR.
6.9 Security Modes and Wireless Client Compatibility
Different security modes can be configured for each SSID. However, not all security modes are compatible with the security mode of the wireless client. The following table shows combinations of security modes between a Windows XP wireless client and the ZyAIR.
Combinations of security modes not marked with a “ O ” or not listed may not be able to make a connection using the SSID. Other wireless clients such as Funk Odyssey may connect using a security combination not listed on the table.
Table 17 Security Modes for ZyAIR and Windows XP Wireless Client
WEP
8021X-ONLY
8021X-DYNAMIC
8021X-STATIC
WPA
WPA-PSK
WPA-MIX
WPA2
WPA2-PSK
WPA2-MIX
WPA2-PSK-MIX
NONE
NO ACCESS
WEP
O
O
8021X-
ONLY
8021X-
DYNAMIC
O O
O
O
O
O
O
O
O
O
8021X-
STATIC
O
O
O
O
WPA
O
O O O O
O
O
WPA-
PSK
O
O
O
WPA-
MIX
WPA2
WPA2
-PSK
WPA2-
MIX
WPA2-
PSK-MIX
NONE
NO
ACCESS
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
6.10 Wireless Client WPA Supplicants
A wireless client supplicant is the software that runs on an operating system instructing the wireless client how to use WPA. At the time of writing, the most widely available supplicant is the WPA patch for Windows XP, Funk Software's Odyssey client, and Meetinghouse Data
Communications' AEGIS client.
The Windows XP patch is a free download that adds WPA capability to Windows XP's builtin "Zero Configuration" wireless client. However, you must run Windows XP to use it.
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The Funk Software's Odyssey client is bundled free (at the time of writing) with the client wireless adaptor(s).
6.11 Wireless Security Effectiveness
The following figure shows the relative effectiveness of these wireless security methods available on your ZyAIR. EAP (Extensible Authentication Protocol) is used for authentication and utilizes dynamic WEP key exchange. It requires interaction with a RADIUS (Remote
Authentication Dial-In User Service) server either on the WAN or your LAN to provide authentication service for wireless stations.
Table 18 ZyAIR Wireless Security Levels
Security Level Security Type
Least Secure Unique SSID (Default)
Most Secure
Unique SSID with Hide SSID Enabled
MAC Address Filtering
WEP Encryption
IEEE802.1x EAP with RADIUS Server Authentication
Wi-Fi Protected Access (WPA)
WPA2
If you do not enable any wireless security on your ZyAIR, your network is accessible to any wireless networking device that is within range.
6.12 Configuring Security
Use the Security screen to create secure profiles. A security profile is a group of configuration settings which can be assigned to an SSID profile in the SSID configuration screen.
You can configure up to 16 security profiles.
To change your ZyAIR’s wireless security settings, click the WIRELESS link under
ADVANCED and then the Security tab.
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Figure 30 Security
G-3000H User’s Guide
The following table describes the labels in this screen.
Table 19 Security
LABEL
Index
Profile Name
Security Mode
Edit
DESCRIPTION
This is the index number of the security profile address.
This field displays a name given to a security profile in the Security configuration screen.
This field displays the security mode given to this security profile.
Select an entry from the list and click Edit to open a screen to configure a security mode, and to name the security profile.
The next screen varies by the Security Mode you select.
6.12.1 Security: No Access
Select No Access in the Security Mode field to display the following screen.
Figure 31 Security: No Access or None
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The following table describes the labels in this screen.
Table 20 Security: No Access or None
LABEL
Name
Security Mode
Apply
Reset
DESCRIPTION
Type a name to identify this security profile.
Choose No Access or None in this field.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
6.12.2 Security: WEP
Select WEP in the Security Mode field to display the following screen.
Figure 32 Security: WEP
76
The following table describes the labels in this screen.
Table 21 Security: WEP
LABEL DESCRIPTION
Name
Security Mode
Type a name to identify this security profile.
Choose WEP in this field.
WEP Encryption Select Disable to allow wireless stations to communicate with the access points without any data encryption.
Select 64-bit WEP or 128-bit WEP to enable data encryption.
Authentication
Method
ASCII
Hex
Select Auto , Open System
The default setting is Auto .
or Shared Key from the drop-down list box.
Select this option to enter ASCII characters as the WEP keys.
Select this option to enter hexadecimal characters as the WEP keys.
The preceding “0x” is entered automatically.
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Table 21 Security: WEP
LABEL
Key 1 to
Key 4
Apply
Reset
DESCRIPTION
The WEP keys are used to encrypt data. Both the ZyAIR and the wireless stations must use the same WEP key for data transmission.
If you chose 64-bit WEP , then enter any 5 ASCII characters or 10 hexadecimal characters ("0-9", "A-F").
If you chose 128-bit WEP , then enter 13 ASCII characters or 26 hexadecimal characters ("0-9", "A-F").
You must configure all four keys, but only one key can be activated at any one time. The default key is key 1.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
6.12.3 Security: 802.1x Only, 802.1x Static 64-bit WEP, 128-bit WEP
Select 802.1x Only, 802.1x Static 64 or 802.1x Static 128 in the Security Mode field to display the following screen.
Figure 33 Security: 802.1x Only, 802.1x Static 64-bit WEP, 128-bit WEP
The following table describes the labels in this screen.
Table 22 Security: 802.1x Only, 802.1x Static 64-bit WEP, 128-bit WEP
LABEL
Name
Security Mode
ASCII
Hex
DESCRIPTION
Type a name to identify this security profile.
Choose 802.1x Only , 802.1x Static 64 or 802.1x Static 128 in this field.
Select this option to enter ASCII characters as the WEP keys.
Select this option to enter hexadecimal characters as the WEP keys.The preceding
“0x” is entered automatically.
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Table 22 Security: 802.1x Only, 802.1x Static 64-bit WEP, 128-bit WEP
LABEL
Key 1 to Key 4
ReAuthentication
Timer
Idle Timeout
Authentication
Databases
Apply
Reset
DESCRIPTION
If you chose 64-bit WEP in the WEP Encryption field, then enter any 5 characters
(ASCII string) or 10 hexadecimal characters ("0-9", "A-F") preceded by 0x for each key.
If you chose 128-bit WEP in the WEP Encryption field, then enter 13 characters
(ASCII string) or 26 hexadecimal characters ("0-9", "A-F") preceded by 0x for each key.
There are four data encryption keys to secure your data from eavesdropping by unauthorized wireless users. The values for the keys must be set up exactly the same on the access points as they are on the wireless stations.
The preceding “0x” is entered automatically. You must configure all four keys, but only one key can be activated at any one time. The default key is key 1.
Specify how often wireless stations have to resend user names and passwords in order to stay connected.
Enter a time interval between 10 and 9999 seconds. The default time interval is
1800 seconds (30 minutes).
Note: If wireless station authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority.
The ZyAIR automatically disconnects a wireless station from the wired network after a period of inactivity. The wireless station needs to enter the user name and password again before access to the wired network is allowed.
The default time interval is 3600 seconds (or 1 hour).
The authentication database contains wireless station login information. The local user database is the built-in database on the ZyAIR. The RADIUS is an external server. Use this drop-down list box to select which database the ZyAIR should use
(first) to authenticate a wireless station.
Before you specify the priority, make sure you have set up the corresponding database correctly first.
Select Local User Database Only to have the ZyAIR just check the built-in user database on the ZyAIR for a wireless station's username and password.
Select RADIUS Only to have the ZyAIR just check the user database on the specified RADIUS server for a wireless station's username and password.
Select Local first, then RADIUS to have the ZyAIR first check the user database on the ZyAIR for a wireless station's username and password. If the user name is not found, the ZyAIR then checks the user database on the specified RADIUS server.
Select RADIUS first, then Local to have the ZyAIR first check the user database on the specified RADIUS server for a wireless station's username and password. If the ZyAIR cannot reach the RADIUS server, the ZyAIR then checks the local user database on the ZyAIR. When the user name is not found or password does not match in the RADIUS server, the ZyAIR will not check the local user database and the authentication fails.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
6.12.4 Security: 802.1x Dynamic 64-bit WEP, 128-bit WEP
Select 802.1x Dynamic 64 or 802.1x Dynamic 128 in the Security Mode field to display the following screen.
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Figure 34 Security: 802.1x Dynamic 64-bit WEP, 128-bit WEP
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The following table describes the labels in this screen.
Table 23 Security: 802.1x Dynamic 64-bit WEP, 128-bit WEP
LABEL
Name
Security Mode
ReAuthentication
Timer
Idle Timeout
Authentication
Databases
Apply
Reset
DESCRIPTION
Type a name to identify this security profile.
Choose 802.1x Dynamic 64 or 802.1x Dynamic 128 in this field.
Specify how often wireless stations have to resend usernames and passwords in order to stay connected.
Enter a time interval between 10 and 9999 seconds. The default time interval is
1800 seconds (30 minutes).
Note: If wireless station authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority.
The ZyAIR automatically disconnects a wireless station from the wired network after a period of inactivity. The wireless station needs to enter the username and password again before access to the wired network is allowed.
The default time interval is 3600 seconds (or 1 hour).
The authentication database contains wireless station login information. The local user database is the built-in database on the ZyAIR. The RADIUS is an external server. Use this drop-down list box to select which database the ZyAIR should use
(first) to authenticate a wireless station.
Before you specify the priority, make sure you have set up the corresponding database correctly first.
Select Local User Database Only to have the ZyAIR just check the built-in user database on the ZyAIR for a wireless station's username and password.
Select RADIUS Only to have the ZyAIR just check the user database on the specified RADIUS server for a wireless station's username and password.
Select Local first, then RADIUS to have the ZyAIR first check the user database on the ZyAIR for a wireless station's username and password. If the user name is not found, the ZyAIR then checks the user database on the specified RADIUS server.
Select RADIUS first, then Local to have the ZyAIR first check the user database on the specified RADIUS server for a wireless station's username and password. If the ZyAIR cannot reach the RADIUS server, the ZyAIR then checks the local user database on the ZyAIR. When the user name is not found or password does not match in the RADIUS server, the ZyAIR will not check the local user database and the authentication fails.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
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6.12.5 Security: WPA, WPA-MIX, WPA2, WPA2-MIX
Select WPA , WPA-MIX , WPA2 or WPA2-MIX in the Security Mode field to display the following screen.
Figure 35 Security: WPA, WPA-MIX, WPA2 or WPA2-MIX
The following table describes the labels not previously discussed
Table 24 Security: WPA, WPA-MIX, WPA2 or WPA2-MIX
LABEL DESCRIPTIONS
Name
Security Mode
ReAuthentication
Timer
Type a name to identify this security profile.
Choose WPA , WPA-MIX , WPA2 or WPA2-MIX in this field.
Specify how often wireless stations have to resend usernames and passwords in order to stay connected.
Enter a time interval between 10 and 9999 seconds. The default time interval is
1800 seconds (30 minutes).
Note: If wireless station authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority.
Idle Timeout The ZyAIR automatically disconnects a wireless station from the wired network after a period of inactivity. The wireless station needs to enter the username and password again before access to the wired network is allowed.
The default time interval is 3600 seconds (or 1 hour).
Group Key Update
Timer
The Group Key Update Timer is the rate at which the AP (if using WPA-PSK key management) or RADIUS server (if using WPA key management) sends a new group key out to all clients. The re-keying process is the WPA equivalent of automatically changing the WEP key for an AP and all stations in a WLAN on a periodic basis. Setting of the Group Key Update Timer is also supported in WPA-
PSK mode. The ZyAIR default is 1800 seconds (30 minutes).
Apply
Reset
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
6.12.6 Security: WPA-PSK, WPA2-PSK, WPA2-PSK-MIX
Select WPA-PSK , WPA2-PSK or WPA2-PSK-MIX in the Security Mode field to display the following screen.
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Figure 36 Security: WPA-PSK, WPA2-PSK or WPA2-PSK-MIX
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The following table describes the labels not previously discussed
Table 25 Security: WPA-PSK, WPA2-PSK or WPA2-PSK-MIX
LABEL DESCRIPTION
Name
Security Mode
Pre-Shared Key
ReAuthentication
Timer
Type a name to identify this security profile.
Choose WPA-PSK , WPA2-PSK or WPA2-PSK-MIX in this field.
The encryption mechanisms used for WPA and WPA-PSK are the same. The only difference between the two is that WPA-PSK uses a simple common password, instead of user-specific credentials.
Type a pre-shared key from 8 to 63 case-sensitive ASCII characters (including spaces and symbols).
Specify how often wireless stations have to resend usernames and passwords in order to stay connected.
Enter a time interval between 10 and 9999 seconds. The default time interval is
1800 seconds (30 minutes).
Note: If wireless station authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority.
Idle Timeout The ZyAIR automatically disconnects a wireless station from the wired network after a period of inactivity. The wireless station needs to enter the username and password again before access to the wired network is allowed.
The default time interval is 3600 seconds (or 1 hour).
Group Key Update
Timer
The Group Key Update Timer is the rate at which the AP (if using WPA-PSK key management) or RADIUS server (if using WPA key management) sends a new group key out to all clients. The re-keying process is the WPA equivalent of automatically changing the WEP key for an AP and all stations in a WLAN on a periodic basis. Setting of the Group Key Update Timer is also supported in WPA-
PSK mode. The ZyAIR default is 1800 seconds (30 minutes).
Apply
Reset
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
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6.13 Introduction to RADIUS
RADIUS is based on a client-sever model that supports authentication and accounting, where access point is the client and the server is the RADIUS server. The RADIUS server handles the following tasks among others:
• Authentication
Determines the identity of the users.
• Accounting
Keeps track of the client’s network activity.
RADIUS user is a simple package exchange in which your ZyAIR acts as a message relay between the wireless station and the network RADIUS server.
6.14 Configuring RADIUS
Use RADIUS if you want to authenticate wireless users using an external server.
You can configure up to four RADIUS server profiles. Each profile also has one backup authentication server and a backup accounting server. These profiles can be assigned to an
SSID profile in the SSID configuration screen
To set up your ZyAIR’s RADIUS server settings, click the WIRELESS link under
ADVANCED and then the RADIUS tab. The screen appears as shown.
Figure 37 RADIUS
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The following table describes the labels in this screen.
Table 26 RADIUS
LABEL DESCRIPTION
Index
Profile Name
Primary
Backup
Select the RADIUS profile you want to configure from the drop-down list box.
Type a name for the RADIUS profile associated with the Index number above.
Configure the fields below to have user authenticate and accounting through external servers.
If the ZyAIR cannot authenticate a wireless station(s) using the Primary
RADIUS server or communicate with the Primary accounting server, you can have the ZyAIR use a Backup RADIUS server. Make sure the Active check boxes are selected if you want to use backup servers.
The ZyAIR will attempt to communicate three times before using the Backup servers. Requests can be issued from the client interface to use the backup server. The length of time for each authentication is decided by the wireless client or based on the configuration of the ReAuthentication Timer field in the in the Security screen.
Active
RADIUS Server IP
Address
Share Secret
Select the check box to enable user authentication through an external authentication server. Clear the check box to enable user authentication using the local user profile on the ZyAIR.
Enter the IP address of the external authentication server in dotted decimal notation.
RADIUS Server Port Enter the port number of the external authentication server. The default port number is 1812. You need not change this value unless your network administrator instructs you to do so with additional information.
Enter a password (up to 31 alphanumeric characters) as the key to be shared between the external authentication server and the ZyAIR. The key must be the same on the external authentication server and your ZyAIR. The key is not sent over the network.
Active
Accounting Server IP
Address
Share Secret
Select the check box to enable user accounting through an external authentication server.
Enter the IP address of the external accounting server in dotted decimal notation.
Accounting Server Port Enter the port number of the external accounting server. The default port number is 1813. You need not change this value unless your network administrator instructs you to do so with additional information.
Enter a password (up to 31 alphanumeric characters) as the key to be shared between the external authentication server and the ZyAIR. The key must be the same on the external authentication server and your ZyAIR. The key is not sent over the network.
Apply
Reset
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
6.15 Configuring Local User Database
To change your ZyAIR’s local user database, click the WIRELESS link under ADVANCED and then the Local User Database tab. The screen appears as shown.
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Figure 38 Local User Database
The following table describes the labels in this screen.
Table 27 Local User Database
LABEL
Active
User Name
Password
Apply
Reset
DESCRIPTION
Select this check box to activate the user profile.
Enter the username (up to 31 characters) for this user profile.
Type a password (up to 31 characters) for this user profile. Note that as you type a password, the screen displays a (*) for each character you type.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
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C H A P T E R 7
Multiple ESS, SSID and VLAN
This chapter describes how to use configure multiple ESS, SSID and VLAN on your ZyAIR.
7.1 Wireless LAN Infrastructures
See the Wizard Setup and Wireless LAN chapters for some basic WLAN scenarios and terminology.
7.1.1 Multiple ESS
Traditionally, you needed different APs to configure different ESSs. As well as the cost of buying extra APs, there was also the possibility of channel interference. The ZyAIR’s
Multiple ESS (Multi-ESS) function allows multiple ESSs to be configured on just one access point (the ZyAIR).
Wireless stations can use different ESS IDs to associate with the same AP. Only wireless stations with the same ESS ID can communicate with each other. This allows the AP to logically group wireless stations in a manner similar to VLAN (Virtual LAN).
With Multi-ESS, the ZyAIR ignores the ToS in the header of data packets and uses a single
QoS priority level for all of an ESS’s traffic.
7.1.2 Notes on Multiple-ESS
• A maximum of eight ESSs are allowed on one AP.
• Each ESS has its own MAC filter set; see the MAC filter set section for more information.
• When you enable Multi-ESS on the ZyAIR, you need to configure separate Unicast and
Multicast/Broadcast keys for each ESS. A Unicast transmission is from one sender to one recipient. A broadcast transmission is from one sender to everybody on the network. A
Multicast transmission is from one sender to a group of hosts on the network.
• You must use different WEP keys for different ESSs. If two stations have different ESS
IDs (they are in different ESSs), but have the same WEP keys, they may hear each other’s communications (but not communicate with each other).
• When you enable Multi-ESS, ESS IDs are automatically hidden (so site survey tools cannot find other station ESS IDs).
• Multi-ESS should not replace but rather be used in conjunction with 802.1x security.
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7.1.3 Multiple ESS Example
Refer to the section on ZyAIR applications for more information.
7.1.4 Multi-ESS with VLAN Example
In this example, VLAN 2 is the management VLAN and includes the computers in ESS1 and
LAN 1. Computers in ESS2 and LAN 2 belong to VLAN 2. “Wireless group” ESS1is limited to accessing the resources on LAN 1 and similarly “wireless group” ESS2 may only access resources on LAN 2.
The switch adds the PVID tag to incoming frames that don’t already have tags on switch ports where PVID is enabled.
Figure 39 Multi-ESS with VLAN Example
7.1.5 Configuring Multiple ESS
Click the WIRELESS link under ADVANCED and the Wireless tab . Select MESSID in the
Operating Mode drop-down list box to display the screen as shown.
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Figure 40 Wireless: Multiple ESS
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The following table describes the labels in this screen.
Table 28 Wireless: Multiple ESS
LABEL
Operating Mode
Choose Channel ID
Scan
RTS/CTS Threshold
Fragmentation
Threshold
DESCRIPTION
Select MESSID in this field to display the screen as shown
Set the operating frequency/channel depending on your particular region. To manually set the ZyAIR to use a channel, select a channel from the drop-down list box. Click MAINTENANCE and then the Channel Usage tab to open the
Channel Usage screen to make sure the channel is not already used by another AP or independent peer-to-peer wireless network. To have the ZyAIR automatically select a channel, click Scan instead. Refer to the Wizard Setup chapter for a little more information on channels.
To have the ZyAIR automatically select a channel, click Scan instead.
(Request To Send) The threshold (number of bytes) for enabling RTS/CTS handshake. Data with its frame size larger than this value will perform the
RTS/CTS handshake. Setting this attribute to be larger than the maximum
MSDU (MAC service data unit) size turns off the RTS/CTS handshake. Setting this attribute to zero turns on the RTS/CTS handshake. Enter a value between
800 and 2432 .
The threshold (number of bytes) for the fragmentation boundary for directed messages. It is the maximum data fragment size that can be sent. Enter a value between 800 and 2432 .
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Table 28 Wireless: Multiple ESS
LABEL DESCRIPTION
Select SSID Profile The SSID (Service Set IDentity) identifies the Service Set with which a wireless station is associated. Wireless stations associating to the access point (AP) must have the same SSID.
Note: If you are configuring the ZyAIR from a computer connected to the wireless LAN and you change the ZyAIR’s
SSID or security settings, you will lose your wireless connection when you press Apply to confirm. You must then change the wireless settings of your computer to match the ZyAIR’s new settings.
Index
Profile
Select the check box to activate an ESS on the ZyAIR.
Select an SSID Profile from the drop-down list box. Configure SSID profiles in the SSID screen.
Enable Intra-BSS
Traffic
Intra-BSS traffic is traffic between wireless stations in the same BSS. Select this check box to enable Intra-BSS traffic.
Enable Breathing LED Select this check box to enable the Breathing LED, also known as the ZyAIR
LED.
The blue ZyAIR LED is on when the ZyAIR is on and blinks (or breaths) when data is being transmitted to/from its wireless stations.
Clear the check box to turn this LED off even when the ZyAIR is on and data is being transmitted/received.
Enable Spanning Tree
Control (STP)
(R)STP detects and breaks network loops and provides backup links between switches, bridges or routers. It allows a bridge to interact with other (R)STP compliant bridges in your network to ensure that only one path exists between any two stations on the network. Select the check box to activate STP on the
ZyAIR.
Output Power
Preamble
Set the output power of the ZyAIR in this field. If there is a high density of APs within an area, decrease the output power of the ZyAIR to reduce interference with other APs. Select one of the following 100%(Full Power) , 50% , 25% or
12.5% . These percentages represent the following power ranges;
• 100%(Full Power) <11b>17dBm/<11g>13dBm (<11b>50mW/
<11g>20mW),
• 50% <11b>15dBm/<11g>11dBm (<11b>32mW/<11g>12.6mW),
• 25% <11b>13dBm/<11g>9dBm (<11b>20mW/<11g>7.9mW),
• 12.5% <11b>11dBm/<11g>7dBm (<11b>12.6mW/<11g>5mW).
Select a preamble type from the drop-down list menu. Choices are Long ,
Short and Dynamic .
See the section on preamble for more information.
802.11 Mode Select 802.11b Only to allow only IEEE 802.11b compliant WLAN devices to associate with the ZyAIR.
Select 802.11g Only to allow only IEEE 802.11g compliant WLAN devices to associate with the ZyAIR.
Select Mixed to allow either IEEE802.11b or IEEE802.11g compliant WLAN devices to associate with the ZyAIR. The transmission rate of your ZyAIR might be reduced.
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Table 28 Wireless: Multiple ESS
LABEL
Max. Frame Burst
Apply
Reset
DESCRIPTION
Enable Maximum Frame Burst to help eliminate collisions in mixed-mode networks (networks with both IEEE 802.11g and IEEE 802.11b traffic) and enhance the performance of both pure IEEE 802.11g and mixed IEEE
802.11b/g networks. Maximum Frame Burst sets the maximum time, in microseconds, that the ZyAIR transmits IEEE 802.11g wireless traffic only.
Type the maximum frame burst between 0 and 1800 (650, 1000 or 1800 recommended). Enter 0 to disable this feature.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
7.2 SSID
Click the WIRELESS link under ADVANCED and the SSID tab to display the screen as shown.
Figure 41 SSID
The following table describes the labels in this screen.
Table 29 SSID
LABEL
Index
Name
DESCRIPTION
This field displays the index number of each SSID profile.
This field displays the identification name of each SSID profile on the ZyAIR.
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Table 29 SSID
LABEL
SSID
VLAN
Second Rx VLAN
Security
RADIUS
QoS
Edit
DESCRIPTION
This field displays the name of the wireless profile on the network. When a wireless client scans for an AP to associate, this is the identity that is broadcast and viewed in the wireless client utility.
This field displays the VLAN ID. Incoming traffic from the WAN is tagged with this ID before it is sent to the LAN interface. Different SSID profiles can use the same or different VLAN IDs. This allows you to split wireless stations into groups using similar VLAN IDs.
This field displays the identification number of incoming Ethernet frames that are forwarded to this ESS. This number can be the same for many ESS groups, depending on how many you want to be members of a particular
VLAN.
This field displays a security profile. See
Configuring Security on page 74 for
more information.
This field displays a RADIUS profile, if you have a RADIUS server configured.
This field displays the Quality of Service setting for this profile.
Click the radio button next to the profile you want to configure and click Edit to go to the SSID configuration screen.
7.2.1 Configuring SSID
Configure appropriate fields in the Wireless , Security , RADIUS , MAC Filter, Layer-2
Isolation and VLAN screens to use those settings in the following screen. These settings can be used instead of the default settings to create SSID profiles.
Figure 42 Configuring SSID
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The following table describes the labels in this screen.
Table 30 Configuring SSID
LABEL DESCRIPTION
Name
SSID
VLAN
Second Rx VLAN
Security
RADIUS
Type a name to identify this SSID profile on the ZyAIR.
Type a name to identify this wireless profile on the network. When a wireless client scans for an AP to associate, this is the identity that is broadcast and viewed in the wireless client utility.
Enter a number from 1 to 4094. Incoming traffic from the WAN is tagged with this ID before it is sent to the LAN interface. Different SSID profiles can use the same or different VLAN IDs. This allows you to split wireless stations into groups using similar VLAN IDs.
Enter a number from 1 to 4094, but different to the VLAN ID entered.
Traffic received from the LAN interface is tagged with a Second Rx VLAN and forwarded to this SSID profile on the wireless LAN interface.
Select a security profile. See
Configuring Security on page 74 for more
information.
Select a RADIUS profile from the drop-down list box, if you have a RADIUS server configured. If you do not need to use RADIUS authentication, ignore this field.
QoS With Multi-ESS, the ZyAIR ignores the ToS in the packet headers and uses a single QoS priority level for all of an ESS’s traffic.
Select the Quality of Service priority for this ESS’s traffic. See Table 10 on page 55
for more information on the priority levels.
L2 Isolation Select Enable from the drop down list box to activate layer-2 isolation.
Enable MAC Filtering Select Enable from the drop down list box to activate MAC address filtering.
Apply
Reset
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
7.2.2 Second Rx VLAN ID
The ZyAIR tags Ethernet frames in VLAN 1 with VLAN ID 1 and tags Ethernet frames in
VLAN 2 with VLAN ID 2. Both VLAN 1 and VLAN 2 have Internet access. VLAN 1 and
VLAN 2 have access to a server. Ethernet frames forwarded from the server back to the switch are tagged. Ethernet frames are tagged with a second Rx VLAN ID (incoming VLAN ID).
These incoming VLAN packets are forwarded to the ZyAIR. The ZyAIR matches the Second
Rx VLAN ID with VLAN ID.
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Figure 43 Second Rx VLAN ID Example
The following steps show you where to setup a Second Rx VLAN ID on the ZyAIR.
1 Click WIRELESS under ADVANCED in your web configurator and the SSID tab.
2 Click Edit in the SSID screen.
3 You can enter a Second Rx VLAN ID in the following screen. The following screen shows VLAN 1 tagged with VLAN ID 1. Incoming packets (Second Rx VLAN ID) with a VLAN ID 3 are matched to VLAN 1.
Figure 44 Configuring SSID: Second Rx VLAN ID Example
92
4 Click Apply to save these settings to the ZyAIR.
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C H A P T E R 8
Other Wireless Configurations
This chapter describes how to configure the Layer-2 Isolation , MAC Filter and Roaming screens on your ZyAIR.
8.1 Layer-2 Isolation Introduction
Layer-2 isolation is used to prevent wireless clients associated with your ZyAIR from communicating with other wireless clients, AP’s, computers or routers in a network.
In the following figure, A represents your ZyAIR, B represents an AP, C represents a server and 1, 2 and 3 represent wireless clients. If layer-2 isolation is enabled on the ZyAIR (A), then wireless clients 1 and 2 cannot communicate with B, C or 3. Wireless clients 1 and 2 cannot communicate with each other unless you enable Intra-BSS in the Wireless configuration screen.
Note: In the Wireless configuration screen, the Enable Intra-BSS Traffic check box is cleared when you enable layer-2 isolation.
If you want 1 and 2 to be able to communicate with C, B and/ or 3 then enter the MAC addresses of C, B and/or 3 in the Allow devices with these MAC addresses table.
Figure 45 Layer-2 Isolation Application
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MAC addresses that are not listed in the Allow devices with these MAC addresses table are blocked from communicating with the ZyAIR’s wireless clients except for broadcast packets.
Layer-2 isolation does not check the traffic between wireless clients that are associated with the same AP. Intra-BSS Traffic allows wireless clients associated with the same AP to communicate with each other.
8.2 Configuring Layer-2 Isolation
If layer-2 isolation is enabled, you need to know the MAC address of the wireless client, AP, computer or router that you want to allow to communicate with the ZyAIR's wireless clients.
To configure layer-2 isolation, click the WIRELESS link under ADVANCED and then the
Layer-2 Isolation tab. The screen appears as shown next.
Figure 46 Layer-2 Isolation Configuration Screen
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The following table describes the labels in this screen.
Table 31 Layer-2 Isolation Configuration
LABEL DESCRIPTION
Enable Layer-2
Isolation
Select the Enable Layer-2 Isolation check box to enable layer-2 isolation on the
ZyAIR.
When you select the Enable Layer-2 Isolation check box and save this configuration screen, the Enable Intra-BSS Traffic check box in the Wireless configuration screen is cleared. This means that wireless clients connected to the
ZyAIR cannot communicate with one another. This would be appropriate in a hotspot application, for example, in a hotel where wireless clients can access the
Internet, but cannot communicate with other wireless clients or AP’s.
If you want wireless clients associated with the ZyAIR to be able to communicate with each other, you must select the Enable Intra-BSS Traffic check box in the
Wireless configuration screen.
Allow devices with these MAC addresses
These are the MAC address of a wireless client, AP, computer or router. A wireless client associated with the ZyAIR can communicate with another wireless client,
AP, computer or router only if the MAC addresses of those devices are listed in this table.
Set
MAC Address
Apply
Reset
This is the index number of the MAC address.
Type the MAC addresses of the wireless client, AP, computer or router that you want to allow the ZyAIR associated wireless clients to have access to in these address fields. Type the MAC address in a valid MAC address format, that is, six hexadecimal character pairs, for example, 12:34:56:78:9a:bc.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
8.2.1 Layer-2 Isolation Examples
The following section shows you example layer-2 isolation configurations on the ZyAIR (A).
Figure 47 Layer-2 Isolation Example
00:0a:c5:00:00:66
00:0a:c5:00:00:cc
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8.2.2 Layer-2 Isolation Example 1
In the following example wireless clients 1 and 2 cannot communicate with C, B or 3.
• Select the Enable Layer-2 Isolation check box, but do not configure any MAC addresses in the Allow devices with these MAC addresses table (1 and 2 cannot communicate with each other unless you enable Intra-BSS).
Figure 48 Layer-2 Isolation Example 1
8.2.3 Layer-2 Isolation Example 2
In the following example wireless clients 1 and 2 can communicate with C, but not B or 3.
• Select the Enable Layer-2 Isolation check box.
• Enter C’s MAC address in the Allow devices with these MAC addresses field.
Figure 49 Layer-2 Isolation Example 2
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8.2.4 Layer-2 Isolation Example 3
In the following example wireless clients 1 and 2 can communicate with B and C but not 3.
• Select the Enable Layer-2 Isolation check box.
• Configure more than one MAC address. Enter the server and your ZyAIR MAC addresses in the Allow devices with these MAC addresses fields.
Figure 50 Layer-2 Isolation Example 3
8.3 Configuring MAC Filter
The MAC filter screen allows you to configure the ZyAIR to give exclusive access to up to 32 devices (Allow Association) or exclude up to 32 devices from accessing the ZyAIR (Deny
Association). Every Ethernet device has a unique MAC (Media Access Control) address. The
MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02. You need to know the MAC address of the devices to configure this screen.
To change your ZyAIR’s MAC filter settings, click the WIRELESS link under ADVANCED and the MAC Filter tab. The screen appears as shown.
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Figure 51 MAC Address Filter
The following table describes the labels in this screen.
Table 32 MAC Address Filter
LABEL
Filter Action
MAC Address
Apply
Reset
DESCRIPTION
Define the filter action for the list of MAC addresses in the MAC address filter table.
Select Deny Association to block access to the router, MAC addresses not listed will be allowed to access the router.
Select Allow Association to permit access to the router, MAC addresses not listed will be denied access to the router.
Enter the MAC addresses (in XX:XX:XX:XX:XX:XX format) of the wireless station that are allowed or denied access to the ZyAIR in these address fields.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
Note: To activate MAC filtering on a profile, select Enable from the Enable MAC
Filtering drop-down list box in the SSID configuration screen and click Apply .
8.4 Configuring Roaming
A wireless station is a device with an IEEE 802.11b or an IEEE 802.11g compliant wireless interface. An access point (AP) acts as a bridge between the wireless and wired networks. An
AP creates its own wireless coverage area. A wireless station can associate with a particular access point only if it is within the access point’s coverage area.
In a network environment with multiple access points, wireless stations are able to switch from one access point to another as they move between the coverage areas. This is roaming. As the wireless station moves from place to place, it is responsible for choosing the most appropriate access point depending on the signal strength, network utilization or other factors.
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The roaming feature on the access points allows the access points to relay information about the wireless stations to each other. When a wireless station moves from a coverage area to another, it scans and uses the channel of a new access point, which then informs the access points on the LAN about the change. The new information is then propagated to the other
access points on the LAN. An example is shown in Figure 52 .
With roaming, a wireless LAN mobile user enjoys a continuous connection to the wired network through an access point while moving around the wireless LAN.
Enable roaming to exchange the latest bridge information of all wireless stations between APs when a wireless station moves between coverage areas. Wireless stations can still associate with other APs even if you disable roaming. Enabling roaming ensures correct traffic forwarding (bridge tables are updated) and maximum AP efficiency. The AP deletes records of wireless stations that associate with other APs (Non-ZyXEL APs may not be able to perform this). 802.1x authentication information is not exchanged (at the time of writing).
Figure 52 Roaming Example
The steps below describe the roaming process.
1 As wireless station Y moves from the coverage area of access point AP 1 to that of access point
2 AP 2 , it scans and uses the signal of access point AP 2 .
3 Access point AP 2 acknowledges the presence of wireless station Y and relays this information to access point AP 1 through the wired LAN.
4 Access point AP 1 updates the new position of wireless station.
5 Wireless station Y sends a request to access point AP 2 for reauthentication.
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8.4.1 Requirements for Roaming
The following requirements must be met in order for wireless stations to roam between the coverage areas.
1 All the access points must be on the same subnet and configured with the same ESSID.
2 If IEEE 802.1x user authentication is enabled and to be done locally on the access point, the new access point must have the user profile for the wireless station.
3 The adjacent access points should use different radio channels when their coverage areas overlap.
4 All access points must use the same port number to relay roaming information.
5 The access points must be connected to the Ethernet and be able to get IP addresses from a DHCP server if using dynamic IP address assignment.
To enable roaming on your ZyAIR, click the WIRELESS link under ADVANCED and then the Roaming tab. The screen appears as shown.
Figure 53 Roaming
The following table describes the labels in this screen.
Table 33 Roaming
LABEL
Active
Port #
Apply
Reset
DESCRIPTION
Select Yes from the drop-down list box to enable roaming on the ZyAIR if you have two or more ZyAIRs on the same subnet.
Note: All APs on the same subnet and the wireless stations must have the same SSID to allow roaming.
Enter the port number to communicate roaming information between access points. The port number must be the same on all access points. The default is
3517. Make sure this port is not used by other services.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
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C H A P T E R 9
VLAN
This chapter discusses how to configure VLAN on the ZyAIR.
9.1 VLAN
A VLAN (Virtual Local Area Network) allows a physical network to be partitioned into multiple logical networks. Stations on a logical network can belong to one or more groups.
Only stations within the same group can talk to each other.
The ZyAIR supports 802.1q VLAN tagging. Tagged VLAN uses an explicit tag (VLAN ID) in the MAC header of a frame to identify VLAN membership. The ZyAIR can identify VLAN tags for incoming Ethernet frames and add VLAN tags to outgoing Ethernet frames.
9.1.1 Management VLAN ID
The Management VLAN ID identifies the “management VLAN”. A device must be a member of this “management VLAN” in order to access and manage the ZyAIR. If a device is not a member of this VLAN, then that device cannot manage the ZyAIR.
If no devices are in the management VLAN, then no one will be able to access the ZyAIR and you will have to restore the default configuration file.
9.1.2 VLAN Tagging
The ZyAIR supports IEEE 802.1q VLAN tagging. Tagged VLAN uses an explicit tag (VLAN
ID) in the MAC header of a frame to identify VLAN membership. The ZyAIR can identify
VLAN tags for incoming Ethernet frames and add VLAN tags to outgoing Ethernet frames.
Note: You must connect the ZyAIR to a VLAN-aware device that is a member in the management VLAN in order to perform management. See the Configuring
Management VLAN Example BEFORE you configure the VLAN screen.
9.2 Configuring VLAN
Click ADVANCED and then VLAN . The screen appears as shown next.
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Figure 54 VLAN
102
The following table describes the labels in this screen.
Table 34 VLAN
LABEL DESCRIPTION
Enable VLAN Tagging Select this check box to turn on VLAN tagging.
Management VLAN ID Enter a number from 1 to 4094 to define this VLAN group. At least one device in your network must belong to this VLAN group in order to manage the ZyAIR.
Note: Mail and FTP servers must have the same management
VLAN ID to communicate with the ZyAIR.
See
Configuring Management VLAN Example on page 103
for more information.
VLAN Mapping Table Use this table to map names to VLAN IDs so that the RADIUS server can assign each user or user group a mapped VLAN ID. See the your RADIUS server documentation for more information on configuring VLAN ID attributes.
See
Configuring Microsoft’s IAS Server Example on page 105
for more information.
Index Select a check box to enable the VLAN mapping profile.
ID Type a VLAN ID. Incoming traffic from the WLAN is authorized and assigned a VLAN ID by the RADIUS server before it is sent to the LAN.
Note: This ID is NOT the same as the VLAN ID displayed in the
SSID screen.
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Table 34 VLAN
LABEL
Name
Apply
Reset
DESCRIPTION
Type a name to have the ZyAIR check for specific VLAN attributes on incoming messages from the RADIUS server. Access-accept packets sent by the RADIUS server contain VLAN related attributes. The configured Name field is checked against these attributes. If the configured Name field matches these attributes, the corresponding VLAN ID entry is used to access the specific VLAN group. If the configured Name field does not match the VLAN related attributes sent from the RADIUS server, a wireless station is assigned the associated SSID VLAN ID. See VLAN ID in the SSID screen.
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
9.2.1 Configuring Management VLAN Example
This section shows you how to create a VLAN on an Ethernet switch.
By default, the port on the ZyAIR is a member of the management VLAN (VID 1). The following procedure shows you how to configure a tagged VLAN.
Note: Use the out-of-band management port or console port to configure the switch if you misconfigure the management VLAN and lock yourself out from performing in-band management.
On an Ethernet switch, create a VLAN that has the same management VLAN ID as the
ZyAIR. The following figure has the ZyAIR connected to port 2 of the switch and your computer connected to port 1. The management VLAN ID is ten.
Figure 55 Management VLAN Configuration Example
Perform the following steps in the switch web configurator:
1 Click VLAN under Advanced Application .
2 Click Static VLAN .
3 Select the ACTIVE check box.
4 Type a Name for the VLAN ID.
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5 Type a VLAN Group ID . This should be the same as the management VLAN ID on the
ZyAIR.
6 Enable Tx Tagging on the port which you want to connect to the ZyAIR. Disable Tx
Tagging on the port you are using to connect to your computer.
7 Under Control , select Fixed to set the port as a member of the VLAN.
Figure 56 VLAN-Aware Switch - Static VLAN
8 Click Apply . The following screen displays.
Figure 57 VLAN-Aware Switch
9 Click VLAN Status to display the following screen.
Figure 58 VLAN-Aware Switch - VLAN Status
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Follow the instructions in the Quick Start Guide to set up your ZyAIR for configuration. The
ZyAIR should be connected to the VLAN-aware switch. In the above example, the switch is using port 1 to connect to your computer and port 2 to connect to the ZyAIR:
1 In the ZyAIR web configurator click VLAN under ADVANCED to open the VLAN setup screen.
2 Select the Enable VLAN Tagging check box and type a Management VLAN ID (10 in this example) in the field provided.
Chapter 9 VLAN
3 Click Apply .
Figure 59 VLAN Setup
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4 The ZyAIR attempts to connect with a VLAN-aware device. You can now access and mange the ZyAIR though the Ethernet switch.
Note: If you do not connect the ZyAIR to a correctly configured VLAN-aware device, you will lock yourself out of the ZyAIR. If this happens, you must reset the ZyAIR to access it again.
9.2.2 Configuring Microsoft’s IAS Server Example
Dynamic VLAN assignment can be used with the ZyAIR. Dynamic VLAN assignment allows network administrators to assign a specific VLAN (configured on the ZyAIR) to an individual’s Windows User Account. When a wireless station is successfully authenticated to the network, it is automatically placed into it’s respective VLAN.
ZyXEL uses the following standard RADIUS attributes returned from Microsoft’s IAS
RADIUS service to place the wireless station into the correct VLAN:
Table 35 Standard RADIUS Attributes
ATTRIBUTE NAME TYPE
Tunnel-Type
Tunnel-Medium-Type
064
065
Tunnel-Private-Group-ID 081
VALUE
13 (decimal) – VLAN
6 (decimal) – 802
<vlan-name> (string) – either the Name you enter in the ZyAIR
VLAN screen or the number. See
.
The following occurs under Dynamic VLAN Assignment:
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1 When you configure your wireless credentials, the ZyAIR sends the information to the
IAS server using RADIUS protocol.
2 Authentication by the RADIUS server is successful.
3 The RADIUS server sends three attributes related to this feature.
4 The ZyAIR compares these attributes with the VLAN screen mapping table.
a If the Name , if for example VLAN 20 is found, the mapped VLAN
ID is used. If it is not found in the mapping table b the string in the Tunnel-Private-Group-ID attribute is considered as a number ID format, for example 2493. The range of the number ID
(Name:string) is between 1 and 4094.
c If a or b are not matched, the ZyAIR uses the VLAN ID configured in the SSID screen and the wireless station. This VLAN ID is independent and hence different to the ID in the VLAN screen.
9.2.2.1 Configuring VLAN Groups
To configure a VLAN group you must first define the VLAN Groups on the Active Directory server and assign the user accounts to each VLAN Group.
1 Using the Active Directory Users and Computers administrative tool, create the VLAN
Groups that will be used for each VLAN ID. One VLAN Group must be created for each
VLAN defined on the ZyAIR. The VLAN Groups must be created as Global/Security groups.
• Type a name for the VLAN Group that describes the VLAN Group’s function.
• Select the Global Group scope parameter check box.
• Select the Security Group type parameter check box.
• Click OK .
Figure 60 New Global Security Group
106
2 In VLAN Group ID Properties , click the Members tab.
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• The IAS uses group memberships to determine which user accounts belong to which
VLAN groups. Click the Add button and configure the VLAN group details.
3 Repeat the previous step to add each VLAN group required.
Figure 61 Add Group Members
9.2.2.2 Configuring Remote Access Policies
Once the VLAN Groups have been created, the IAS Remote Access Policy needs to be defined. This allows the IAS to compare the user account being authenticated against the group memberships of each VLAN Group.
1 Using the Remote Access Policy option on the Internet Authentication Service management interface, create a new VLAN Policy for each VLAN Group defined in the previous section. The order of the remote access policies is important. The most specific policies should be placed at the top of the policy list and the most general at the bottom.
For example, if the Day-And-Time Restriction policy is still present, it should be moved to the bottom or deleted to allow the VLAN Group policies to take precedence.
• Right click Remote Access Policy and select New Remote Access Policy .
• Enter a Policy friendly name that describes the policy. Each Remote Access Policy will be matched to one VLAN Group. An example may be, Allow - VLAN 10 Policy .
• Click Next .
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Figure 62 New Remote Access Policy for VLAN Group
2 The Conditions window displays. Select Add to add a condition for this policy to act on.
3 In the Select Attribute screen, click Windows-Groups and the Add button.
Figure 63 Specifying Windows-Group Condition
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4 The Select Groups window displays. Select a remote access policy and click the Add button. The policy is added to the field below. Only one VLAN Group should be associated with each policy.
5 Click OK and Next in the next few screens to accept the group value.
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Figure 64 Adding VLAN Group
6 When the Permissions options screen displays, select Grant remote access permission .
• Click Next to grant access based on group membership.
• Click the Edit Profile button.
Figure 65 Granting Permissions and User Profile Screens
7 The Edit Dial-in Profile screen displays. Click the Authentication tab and select the
Extensible Authentication Protocol check box.
• Select an EAP type depending on your authentication needs from the drop-down list box.
• Clear the check boxes for all other authentication types listed below the drop-down list box.
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Figure 66 Authentication Tab Settings
8 Click the Encryption tab. Select the Strongest encryption option. This step is not required for EAP-MD5, but is performed as a safeguard.
Figure 67 Encryption Tab Settings
110
9 Click the IP tab and select the Client may request an IP address check box for DHCP support.
10 Click the Advanced tab. The current default parameters returned to the ZyAIR should be
Service-Type and Framed-Protocol .
• Click the Add button to add an additional three RADIUS VLAN attributes required for
802.1X Dynamic VLAN Assignment.
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Figure 68 Connection Attributes Screen
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11 The RADIUS Attribute screen displays. From the list, three RADIUS attributes will be added:
• Tunnel-Medium-Type
• Tunnel-Pvt-Group-ID
• Tunnel-Type
• Click the Add button
• Select Tunnel-Medium-Type
• Click the Add button.
Figure 69 RADIUS Attribute Screen
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12 The Enumerable Attribute Information screen displays. Select the 802 value from the
Attribute value drop-down list box.
• Click OK .
Figure 70 802 Attribute Setting for Tunnel-Medium-Type
13 Return to the RADIUS Attribute Screen
shown as Figure 69 on page 111
.
• Select Tunnel-Pvt-Group-ID.
• Click Add .
14 The Attribute Information screen displays.
• In the Enter the attribute value in: field select String and type a number in the range 1 to 4094 or a Name for this policy. This Name should match a name in the VLAN mapping table on the ZyAIR. Wireless stations belonging to the VLAN Group specified in this policy will be given a VLAN ID specified in the ZyAIR VLAN table.
• Click OK .
Figure 71 VLAN ID Attribute Setting for Tunnel-Pvt-Group-ID
112
15 Return to the RADIUS Attribute Screen
shown as Figure 69 on page 111
.
• Select Tunnel-Type .
• Click Add .
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16 The Enumerable Attribute Information screen displays.
• Select Virtual LANs (VLAN) from the attribute value drop-down list box.
• Click OK .
Figure 72 VLAN Attribute Setting for Tunnel-Type
17 Return to the RADIUS Attribute Screen
shown as Figure 69 on page 111
.
• Click the Close button.
• The completed Advanced tab configuration should resemble the following screen.
Figure 73 Completed Advanced Tab
Note: Repeat the Configuring Remote Access Policies procedure for each VLAN
Group defined in the Active Directory. Remember to place the most general Remote
Access Policies at the bottom of the list and the most specific at the top of the list.
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C H A P T E R 10
IP Screen
This chapter discusses how to configure IP on the ZyAIR
10.1 Factory Ethernet Defaults
The Ethernet parameters of the ZyAIR are preset in the factory with the following values:
1 IP address of 192.168.1.2
2 Subnet mask of 255.255.255.0 (24 bits)
These parameters should work for the majority of installations.
10.2 TCP/IP Parameters
10.2.1 IP Address and Subnet Mask
Refer to the IP Address and Subnet Mask section in the Wizard Setup chapter for this information.
10.2.2 WAN IP Address Assignment
Every computer on the Internet must have a unique IP address. If your networks are isolated from the Internet, for instance, only between your two branch offices, you can assign any IP addresses to the hosts without problems. However, the Internet Assigned Numbers Authority
(IANA) has reserved the following three blocks of IP addresses specifically for private networks.
Table 36 Private IP Address Ranges
10.0.0.0
172.16.0.0
192.168.0.0
-
-
-
10.255.255.255
172.31.255.255
192.168.255.255
You can obtain your IP address from the IANA, from an ISP or have it assigned by a private network. If you belong to a small organization and your Internet access is through an ISP, the
ISP can provide you with the Internet addresses for your local networks. On the other hand, if you are part of a much larger organization, you should consult your network administrator for the appropriate IP addresses.
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Note: Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines above. For more information on address assignment, please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466,
Guidelines for Management of IP Address Space.
10.3 Configuring IP
Click ADVANCED and then IP to display the screen shown next.
Figure 74 IP Setup
116
The following table describes the labels in this screen.
Table 37 IP Setup
LABEL DESCRIPTION
IP Address Assignment
Get automatically from
DHCP
Select this option if your ZyAIR is using a dynamically assigned IP address from a DHCP server each time.
Note: You must know the IP address assigned to the ZyAIR
(by the DHCP server) to access the ZyAIR again.
Use fixed IP address
IP Address
Select this option if your ZyAIR is using a static IP address. When you select this option, fill in the fields below.
Enter the IP address of your ZyAIR in dotted decimal notation.
Note: If you change the ZyAIR's IP address, you must use the new IP address if you want to access the web configurator again.
IP Subnet Mask Type the subnet mask.
Gateway IP Address Type the IP address of the gateway. The gateway is an immediate neighbor of your ZyAIR that will forward the packet to the destination. On the LAN, the gateway must be a router on the same segment as your ZyAIR; over the
WAN, the gateway must be the IP address of one of the remote node.
Apply
Reset
Click Apply to save your changes back to the ZyAIR.
Click Reset to begin configuring this screen afresh.
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C H A P T E R 11
Certificates
This chapter gives background information about public-key certificates and explains how to use them.
11.1 Certificates Overview
The ZyAIR can use certificates (also called digital IDs) to authenticate users. Certificates are based on public-private key pairs. A certificate contains the certificate owner’s identity and public key. Certificates provide a way to exchange public keys for use in authentication.
A Certification Authority (CA) issues certificates and guarantees the identity of each certificate owner. There are commercial certification authorities like CyberTrust or VeriSign and government certification authorities. You can use the ZyAIR to generate certification requests that contain identifying information and public keys and then send the certification requests to a certification authority.
In public-key encryption and decryption, each host has two keys. One key is public and can be made openly available; the other key is private and must be kept secure. Public-key encryption in general works as follows.
1 Tim wants to send a private message to Jenny. Tim generates a public key pair. What is encrypted with one key can only be decrypted using the other.
2 Tim keeps the private key and makes the public key openly available.
3 Tim uses his private key to encrypt the message and sends it to Jenny.
4 Jenny receives the message and uses Tim’s public key to decrypt it.
5 Additionally, Jenny uses her own private key to encrypt a message and Tim uses Jenny’s public key to decrypt the message.
The ZyAIR uses certificates based on public-key cryptology to authenticate users attempting to establish a connection, not to encrypt the data that you send after establishing a connection.
The method used to secure the data that you send through an established connection depends on the type of connection. For example, a VPN tunnel might use the triple DES encryption algorithm.
The certification authority uses its private key to sign certificates. Anyone can then use the certification authority’s public key to verify the certificates.
A certification path is the hierarchy of certification authority certificates that validate a certificate. The ZyAIR does not trust a certificate if any certificate on its path has expired or been revoked.
Certification authorities maintain directory servers with databases of valid and revoked certificates. A directory of certificates that have been revoked before the scheduled expiration is called a CRL (Certificate Revocation List). The ZyAIR can check a peer’s certificate against a directory server’s list of revoked certificates. The framework of servers, software, procedures and policies that handles keys is called PKI (public-key infrastructure).
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11.1.1 Advantages of Certificates
Certificates offer the following benefits.
• The ZyAIR only has to store the certificates of the certification authorities that you decide to trust, no matter how many devices you need to authenticate.
• Key distribution is simple and very secure since you can freely distribute public keys and you never need to transmit private keys.
11.2 Self-signed Certificates
Until public-key infrastructure becomes more mature, it may not be available in some areas.
You can have the ZyAIR act as a certification authority and sign its own certificates.
11.3 Configuration Summary
This section summarizes how to manage certificates on the ZyAIR.
Use the My Certificate screens to generate and export self-signed certificates or certification requests and import the ZyAIRs’ CA-signed certificates.
Use the Trusted CA screens to save CA certificates to the ZyAIR.
11.4 My Certificates
Click CERTIFICATES , My Certificates to open the ZyAIR’s summary list of certificates and certification requests. Certificates display in black and certification requests display in gray. See the following figure.
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Figure 75 My Certificates
G-3000H User’s Guide
The following table describes the labels in this screen.
Table 38 My Certificates
LABEL
PKI Storage
Space in Use
Replace
#
Name
Type
Subject
DESCRIPTION
This bar displays the percentage of the ZyAIR’s PKI storage space that is currently in use. When you are using 80% or less of the storage space, the bar is green.
When the amount of space used is over 80%, the bar is red. When the bar is red, you should consider deleting expired or unnecessary certificates before adding more certificates.
This button displays when the ZyAIR has the factory default certificate. The factory default certificate is common to all ZyAIRs that use certificates. ZyXEL recommends that you use this button to replace the factory default certificate with one that uses your ZyAIR's MAC address.
This field displays the certificate index number. The certificates are listed in alphabetical order.
This field displays the name used to identify this certificate. It is recommended that you give each certificate a unique name.
This field displays what kind of certificate this is.
REQ represents a certification request and is not yet a valid certificate. Send a certification request to a certification authority, which then issues a certificate. Use the My Certificate Import screen to import the certificate and replace the request.
SELF represents a self-signed certificate.
*SELF represents the default self-signed certificate, which the ZyAIR uses to sign imported trusted remote host certificates.
CERT represents a certificate issued by a certification authority.
This field displays identifying information about the certificate’s owner, such as CN
(Common Name), OU (Organizational Unit or department), O (Organization or company) and C (Country). It is recommended that each certificate have unique subject information.
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Table 38 My Certificates (continued)
LABEL
Issuer
Valid From
Valid To
Details
Create
Import
Delete
Refresh
DESCRIPTION
This field displays identifying information about the certificate’s issuing certification authority, such as a common name, organizational unit or department, organization or company and country. With self-signed certificates, this is the same information as in the Subject field.
This field displays the date that the certificate becomes applicable. The text displays in red and includes a Not Yet Valid! message if the certificate has not yet become applicable.
This field displays the date that the certificate expires. The text displays in red and includes an Expiring! or Expired! message if the certificate is about to expire or has already expired.
Click the details icon to open a screen with an in-depth list of information about the certificate.
Click the delete icon to remove the certificate. A window displays asking you to confirm that you want to delete the certificate.
You cannot delete a certificate that one or more features is configured to use.
Do the following to delete a certificate that shows *SELF in the Type field.
1. Make sure that no other features, such as HTTPS, VPN, SSH are configured to use the *SELF certificate.
2. Click the details icon next to another self-signed certificate (see the description on the Create button if you need to create a self-signed certificate).
3. Select the Default self-signed certificate which signs the imported remote host certificates check box.
4. Click Apply to save the changes and return to the My Certificates screen.
5. The certificate that originally showed *SELF displays SELF and you can delete it now.
Note that subsequent certificates move up by one when you take this action
Click Create to go to the screen where you can have the ZyAIR generate a certificate or a certification request.
Click Import to open a screen where you can save the certificate that you have enrolled from a certification authority from your computer to the ZyAIR.
Click Delete to delete an existing certificate. A window display asking you to confirm that you want to delete the certificate. Note that subsequent certificates move up by one when you take this action.
Click Refresh to display the current validity status of the certificates.
11.5 Certificate File Formats
The certification authority certificate that you want to import has to be in one of these file formats:
• Binary X.509: This is an ITU-T recommendation that defines the formats for X.509 certificates.
• PEM (Base-64) encoded X.509: This Privacy Enhanced Mail format uses 64 ASCII characters to convert a binary X.509 certificate into a printable form.
• Binary PKCS#7: This is a standard that defines the general syntax for data (including digital signatures) that may be encrypted. The ZyAIR currently allows the importation of a PKS#7 file that contains a single certificate.
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• PEM (Base-64) encoded PKCS#7: This Privacy Enhanced Mail (PEM) format uses 64
ASCII characters to convert a binary PKCS#7 certificate into a printable form.
11.6 Importing a Certificate
Click CERTIFICATES , My Certificates and then Import to open the My Certificate
Import screen. Follow the instructions in this screen to save an existing certificate to the
ZyAIR, see the following figure.
Note: You can only import a certificate that matches a corresponding certification request that was generated by the ZyAIR.
Note: The certificate you import replaces the corresponding request in the My
Certificates screen.
Note: You must remove any spaces from the certificate’s filename before you can import it.
Figure 76 My Certificate Import
The following table describes the labels in this screen.
Table 39 My Certificate Import
LABEL DESCRIPTION
File Path Type in the location of the file you want to upload in this field or click Browse to find it.
Browse Click to find the certificate file you want to upload.
Apply
Cancel
Click Apply to save the certificate on the ZyAIR.
Click Cancel to quit and return to the My Certificates screen.
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11.7 Creating a Certificate
Click CERTIFICATES , My Certificates and then Create to open the My Certificate
Create screen. Use this screen to have the ZyAIR create a self-signed certificate, enroll a certificate with a certification authority or generate a certification request, see the following figure.
Figure 77 My Certificate Create
122
The following table describes the labels in this screen.
Table 40 My Certificate Create
LABEL
Certificate Name
Subject Information
Common Name
DESCRIPTION
Type up to 31 ASCII characters (not including spaces) to identify this certificate.
Use these fields to record information that identifies the owner of the certificate. You do not have to fill in every field, although the Common Name is mandatory. The certification authority may add fields (such as a serial number) to the subject information when it issues a certificate. It is recommended that each certificate have unique subject information.
Select a radio button to identify the certificate’s owner by IP address, domain name or e-mail address. Type the IP address (in dotted decimal notation), domain name or e-mail address in the field provided. The domain name or email address can be up to 31 ASCII characters. The domain name or e-mail address is for identification purposes only and can be any string.
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Table 40 My Certificate Create (continued)
LABEL DESCRIPTION
Organizational Unit
Organization
Country
Key Length
Type up to 127 characters to identify the nation where the certificate owner is located. You may use any character, including spaces, but the ZyAIR drops trailing spaces.
Select a number from the drop-down list box to determine how many bits the key should use (512 to 2048). The longer the key, the more secure it is. A longer key also uses more PKI storage space.
These radio buttons deal with how and when the certificate is to be generated.
Enrollment Options
Create a self-signed certificate
Create a certification request and save it locally for later manual enrollment
Select Create a self-signed certificate to have the ZyAIR generate the certificate and act as the Certification Authority (CA) itself. This way you do not need to apply to a certification authority for certificates.
Select Create a certification request and save it locally for later manual enrollment to have the ZyAIR generate and store a request for a certificate.
Use the My Certificate Details screen to view the certification request and copy it to send to the certification authority.
Copy the certification request from the My Certificate Details screen (
My Certificate Details section
) and then send it to the certification authority.
Create a certification request and enroll for a certificate immediately online
Type up to 127 characters to identify the organizational unit or department to which the certificate owner belongs. You may use any character, including spaces, but the ZyAIR drops trailing spaces.
Type up to 127 characters to identify the company or group to which the certificate owner belongs. You may use any character, including spaces, but the ZyAIR drops trailing spaces.
Enrollment Protocol
Select Create a certification request and enroll for a certificate immediately online to have the ZyAIR generate a request for a certificate and apply to a certification authority for a certificate.
You must have the certification authority’s certificate already imported in the
Trusted CAs screen.
When you select this option, you must select the certification authority’s enrollment protocol and the certification authority’s certificate from the dropdown list boxes and enter the certification authority’s server address. You also need to fill in the Reference Number and Key if the certification authority requires them.
Select the certification authority’s enrollment protocol from the drop-down list box.
Simple Certificate Enrollment Protocol (SCEP) is a TCP-based enrollment protocol that was developed by VeriSign and Cisco.
Certificate Management Protocol (CMP) is a TCP-based enrollment protocol that was developed by the Public Key Infrastructure X.509 working group of the Internet Engineering Task Force (IETF) and is specified in RFC 2510.
CA Server Address
CA Certificate
Request
Authentication
Enter the IP address (or URL) of the certification authority server.
Select the certification authority’s certificate from the CA Certificate dropdown list box.
You must have the certification authority’s certificate already imported in the
Trusted CAs screen. Click Trusted CAs to go to the Trusted CAs screen where you can view (and manage) the ZyAIR's list of certificates of trusted certification authorities.
When you select Create a certification request and enroll for a certificate immediately online , the certification authority may want you to include a reference number and key to identify you when you send a certification request. Fill in both the Reference Number and the Key fields if your certification authority uses CMP enrollment protocol. Just fill in the Key field if your certification authority uses the SECP enrollment protocol.
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Table 40 My Certificate Create (continued)
LABEL
Key
Apply
Cancel
DESCRIPTION
Type the key that the certification authority gave you.
Click Apply to begin certificate or certification request generation.
Click Cancel to quit and return to the My Certificates screen.
After you click Apply in the My Certificate Create screen, you see a screen that tells you the
ZyAIR is generating the self-signed certificate or certification request.
After the ZyAIR successfully enrolls a certificate or generates a certification request or a selfsigned certificate, you see a screen with a Return button that takes you back to the My
Certificates screen.
If you configured the My Certificate Create screen to have the ZyAIR enroll a certificate and the certificate enrollment is not successful, you see a screen with a Return button that takes you back to the My Certificate Create screen. Click Return and check your information in the My Certificate Create screen. Make sure that the certification authority information is correct and that your Internet connection is working properly if you want the ZyAIR to enroll a certificate online.
11.8 My Certificate Details
Click CERTIFICATES , and then My Certificates to open the My Certificates screen (
). Click the details icon to open the My Certificate Details screen. You can use this screen to view in-depth certificate information and change the certificate’s name. In the case of a self-signed certificate, you can set it to be the one that the ZyAIR uses to sign the trusted remote host certificates that you import to the ZyAIR.
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Figure 78 My Certificate Details
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The following table describes the labels in this screen.
Table 41 My Certificate Details
LABEL
Name
Property
Default self-signed certificate which signs the imported remote host certificates.
DESCRIPTION
This field displays the identifying name of this certificate. If you want to change the name, type up to 31 characters to identify this certificate. You may use any character (not including spaces).
Select this check box to have the ZyAIR use this certificate to sign the trusted remote host certificates that you import to the ZyAIR. This check box is only available with self-signed certificates.
If this check box is already selected, you cannot clear it in this screen, you must select this check box in another self-signed certificate’s details screen. This automatically clears the check box in the details screen of the certificate that was previously set to sign the imported trusted remote host certificates.
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Table 41 My Certificate Details (continued)
LABEL DESCRIPTION
Certificate Path Click the Refresh button to have this read-only text box display the hierarchy of certification authorities that validate the certificate (and the certificate itself).
If the issuing certification authority is one that you have imported as a trusted certification authority, it may be the only certification authority in the list (along with the certificate itself). If the certificate is a self-signed certificate, the certificate itself is the only one in the list. The ZyAIR does not trust the certificate and displays “Not trusted” in this field if any certificate on the path has expired or been revoked.
Click Refresh to display the certification path.
These read-only fields display detailed information about the certificate.
Refresh
Certificate
Information
Type
Version
Serial Number
Subject
Issuer
This field displays general information about the certificate. CA-signed means that a Certification Authority signed the certificate. Self-signed means that the certificate’s owner signed the certificate (not a certification authority). “X.509” means that this certificate was created and signed according to the ITU-T X.509 recommendation that defines the formats for public-key certificates.
This field displays the X.509 version number.
This field displays the certificate’s identification number given by the certification authority or generated by the ZyAIR.
This field displays information that identifies the owner of the certificate, such as
Common Name (CN), Organizational Unit (OU), Organization (O) and Country
(C).
This field displays identifying information about the certificate’s issuing certification authority, such as Common Name, Organizational Unit,
Organization and Country.
With self-signed certificates, this is the same as the Subject Name field.
Signature Algorithm This field displays the type of algorithm that was used to sign the certificate. The
ZyAIR uses rsa-pkcs1-sha1 (RSA public-private key encryption algorithm and the SHA1 hash algorithm). Some certification authorities may use ras-pkcs1md5 (RSA public-private key encryption algorithm and the MD5 hash algorithm).
Valid From This field displays the date that the certificate becomes applicable. The text displays in red and includes a Not Yet Valid! message if the certificate has not yet become applicable.
Valid To
Key Algorithm
Subject Alternative
Name
Key Usage
This field displays the date that the certificate expires. The text displays in red and includes an Expiring! or Expired! message if the certificate is about to expire or has already expired.
This field displays the type of algorithm that was used to generate the certificate’s key pair (the ZyAIR uses RSA encryption) and the length of the key set in bits (1024 bits for example).
This field displays the certificate owner‘s IP address (IP), domain name (DNS) or e-mail address (EMAIL).
Basic Constraint
MD5 Fingerprint
This field displays for what functions the certificate’s key can be used. For example, “DigitalSignature” means that the key can be used to sign certificates and “KeyEncipherment” means that the key can be used to encrypt text.
This field displays general information about the certificate. For example,
Subject Type=CA means that this is a certification authority’s certificate and
“Path Length Constraint=1” means that there can only be one certification authority in the certificate’s path.
This is the certificate’s message digest that the ZyAIR calculated using the MD5 algorithm.
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Table 41 My Certificate Details (continued)
LABEL
SHA1 Fingerprint
Certificate in PEM
(Base-64) Encoded
Format
Export
Apply
Cancel
DESCRIPTION
This is the certificate’s message digest that the ZyAIR calculated using the
SHA1 algorithm.
This read-only text box displays the certificate or certification request in Privacy
Enhanced Mail (PEM) format. PEM uses 64 ASCII characters to convert the binary certificate into a printable form.
You can copy and paste a certification request into a certification authority’s web page, an e-mail that you send to the certification authority or a text editor and save the file on a management computer for later manual enrollment.
You can copy and paste a certificate into an e-mail to send to friends or colleagues or you can copy and paste a certificate into a text editor and save the file on a management computer for later distribution (via floppy disk for example).
Click this button and then Save in the File Download screen. The Save As screen opens, browse to the location that you want to use and click Save .
Click Apply to save your changes back to the ZyAIR. You can only change the name, except in the case of a self-signed certificate, which you can also set to be the default self-signed certificate that signs the imported trusted remote host certificates.
Click Cancel to quit and return to the My Certificates screen.
11.9 Trusted CAs
Click CERTIFICATES , Trusted CAs to open the Trusted CAs screen. This screen displays a summary list of certificates of the certification authorities that you have set the ZyAIR to accept as trusted. The ZyAIR accepts any valid certificate signed by a certification authority on this list as being trustworthy; thus you do not need to import any certificate that is signed by one of these certification authorities. See the following figure.
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Figure 79 Trusted CAs
128
The following table describes the labels in this screen.
Table 42 Trusted CAs
LABEL
PKI Storage
Space in Use
#
Name
Subject
Issuer
Valid From
Valid To
CRL Issuer
Details
Import
DESCRIPTION
This bar displays the percentage of the ZyAIR’s PKI storage space that is currently in use. When you are using 80% or less of the storage space, the bar is green.
When the amount of space used is over 80%, the bar is red. When the bar is red, you should consider deleting expired or unnecessary certificates before adding more certificates.
This field displays the certificate index number. The certificates are listed in alphabetical order.
This field displays the name used to identify this certificate.
This field displays identifying information about the certificate’s owner, such as CN
(Common Name), OU (Organizational Unit or department), O (Organization or company) and C (Country). It is recommended that each certificate have unique subject information.
This field displays identifying information about the certificate’s issuing certification authority, such as a common name, organizational unit or department, organization or company and country. With self-signed certificates, this is the same information as in the Subject field.
This field displays the date that the certificate becomes applicable. The text displays in red and includes a Not Yet Valid! message if the certificate has not yet become applicable.
This field displays the date that the certificate expires. The text displays in red and includes an Expiring! or Expired! message if the certificate is about to expire or has already expired.
This field displays Yes if the certification authority issues Certificate Revocation
Lists for the certificates that it has issued and you have selected the Issues certificate revocation lists (CRL) check box in the certificate’s details screen to have the ZyAIR check the CRL before trusting any certificates issued by the certification authority. Otherwise the field displays “No”.
Click Details to view in-depth information about the certification authority’s certificate, change the certificate’s name and set whether or not you want the
ZyAIR to check a certification authority’s list of revoked certificates before trusting a certificate issued by the certification authority.
Click Import to open a screen where you can save the certificate of a certification authority that you trust, from your computer to the ZyAIR.
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Table 42 Trusted CAs (continued)
LABEL
Delete
Refresh
DESCRIPTION
Click Delete to delete an existing certificate. A window display asking you to confirm that you want to delete the certificate. Note that subsequent certificates move up by one when you take this action.
Click this button to display the current validity status of the certificates.
11.10 Importing a Trusted CA’s Certificate
Click CERTIFICATES , Trusted CAs to open the Trusted CAs screen and then click
Import to open the Trusted CA Import screen. Follow the instructions in this screen to save a trusted certification authority’s certificate to the ZyAIR, see the following figure.
Note: You must remove any spaces from the certificate’s filename before you can import the certificate.
Figure 80 Trusted CA Import
The following table describes the labels in this screen.
Table 43 Trusted CA Import
LABEL DESCRIPTION
File Path Type in the location of the file you want to upload in this field or click Browse to find it.
Browse Click to find the certificate file you want to upload.
Apply
Cancel
Click Apply to save the certificate on the ZyAIR.
Click Cancel to quit and return to the Trusted CAs screen.
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11.11 Trusted CA Certificate Details
Click CERTIFICATES , Trusted CAs to open the Trusted CAs screen. Click the details icon to open the Trusted CA Details screen. Use this screen to view in-depth information about the certification authority’s certificate, change the certificate’s name and set whether or not you want the ZyAIR to check a certification authority’s list of revoked certificates before trusting a certificate issued by the certification authority.
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Figure 81 Trusted CA Details
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The following table describes the labels in this screen.
Table 44 Trusted CA Details
LABEL
Name
Property
Default self-signed certificate which signs the imported remote host certificates.
DESCRIPTION
This field displays the identifying name of this certificate. If you want to change the name, type up to 31 characters to identify this key certificate. You may use any character (not including spaces).
Select this check box to have the ZyAIR use this certificate to sign the trusted remote host certificates that you import to the ZyAIR. This check box is only available with self-signed certificates.
If this check box is already selected, you cannot clear it in this screen, you must select this check box in another self-signed certificate’s details screen. This automatically clears the check box in the details screen of the certificate that was previously set to sign the imported trusted remote host certificates.
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Table 44 Trusted CA Details (continued)
LABEL DESCRIPTION
Certificate Path Click the Refresh button to have this read-only text box display the end entity’s certificate and a list of certification authority certificates that shows the hierarchy of certification authorities that validate the end entity’s certificate. If the issuing certification authority is one that you have imported as a trusted certification authority, it may be the only certification authority in the list (along with the end entity’s own certificate). The ZyAIR does not trust the end entity’s certificate and displays “Not trusted” in this field if any certificate on the path has expired or been revoked.
Click Refresh to display the certification path.
These read-only fields display detailed information about the certificate.
Refresh
Certificate
Information
Type
Version
Serial Number
Subject
Issuer
This field displays general information about the certificate. CA-signed means that a Certification Authority signed the certificate. Self-signed means that the certificate’s owner signed the certificate (not a certification authority). X.509 means that this certificate was created and signed according to the ITU-T X.509 recommendation that defines the formats for public-key certificates.
This field displays the X.509 version number.
This field displays the certificate’s identification number given by the certification authority.
This field displays information that identifies the owner of the certificate, such as
Common Name (CN), Organizational Unit (OU), Organization (O) and Country
(C).
This field displays identifying information about the certificate’s issuing certification authority, such as Common Name, Organizational Unit,
Organization and Country.
With self-signed certificates, this is the same information as in the Subject
Name field.
Signature Algorithm This field displays the type of algorithm that was used to sign the certificate.
Some certification authorities use rsa-pkcs1-sha1 (RSA public-private key encryption algorithm and the SHA1 hash algorithm). Other certification authorities may use ras-pkcs1-md5 (RSA public-private key encryption algorithm and the MD5 hash algorithm).
Valid From This field displays the date that the certificate becomes applicable. The text displays in red and includes a Not Yet Valid! message if the certificate has not yet become applicable.
Valid To
Key Algorithm
Subject Alternative
Name
Key Usage
This field displays the date that the certificate expires. The text displays in red and includes an Expiring! or Expired! message if the certificate is about to expire or has already expired.
This field displays the type of algorithm that was used to generate the certificate’s key pair (the ZyAIR uses RSA encryption) and the length of the key set in bits (1024 bits for example).
This field displays the certificate’s owner‘s IP address (IP), domain name (DNS) or e-mail address (EMAIL).
Basic Constraint
This field displays for what functions the certificate’s key can be used. For example, “DigitalSignature” means that the key can be used to sign certificates and “KeyEncipherment” means that the key can be used to encrypt text.
This field displays general information about the certificate. For example,
Subject Type=CA means that this is a certification authority’s certificate and
“Path Length Constraint=1” means that there can only be one certification authority in the certificate’s path.
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Table 44 Trusted CA Details (continued)
LABEL
CRL Distribution
Points
MD5 Fingerprint
SHA1 Fingerprint
Certificate in PEM
(Base-64) Encoded
Format
Export
Apply
Cancel
DESCRIPTION
This field displays how many directory servers with Lists of revoked certificates the issuing certification authority of this certificate makes available. This field also displays the domain names or IP addresses of the servers.
This is the certificate’s message digest that the ZyAIR calculated using the MD5 algorithm. You can use this value to verify with the certification authority (over the phone for example) that this is actually their certificate.
This is the certificate’s message digest that the ZyAIR calculated using the
SHA1 algorithm. You can use this value to verify with the certification authority
(over the phone for example) that this is actually their certificate.
This read-only text box displays the certificate or certification request in Privacy
Enhanced Mail (PEM) format. PEM uses 64 ASCII characters to convert the binary certificate into a printable form.
You can copy and paste the certificate into an e-mail to send to friends or colleagues or you can copy and paste the certificate into a text editor and save the file on a management computer for later distribution (via floppy disk for example).
Click this button and then Save in the File Download screen. The Save As screen opens, browse to the location that you want to use and click Save .
Click Apply to save your changes back to the ZyAIR. You can only change the name and/or set whether or not you want the ZyAIR to check the CRL that the certification authority issues before trusting a certificate issued by the certification authority.
Click Cancel to quit and return to the Trusted CAs screen.
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C H A P T E R 12
Remote Management Screens
This chapter provides information on the Remote Management screens.
12.1 Remote Management Overview
Remote management allows you to determine which services/protocols can access which
ZyAIR interface (if any) from which computers.
You may manage your ZyAIR from a remote location via:
• Internet (WAN only)
• LAN only
• ALL (LAN and WAN)
• Neither (Disable).
To disable remote management of a service, select Disable in the corresponding Server
Access field.
You may only have one remote management session running at a time. The ZyAIR automatically disconnects a remote management session of lower priority when another remote management session of higher priority starts. The priorities for the different types of remote management sessions are as follows.
1 Telnet
2 HTTP
12.1.1 Remote Management Limitations
Remote management over LAN or WAN will not work when:
1 A filter in SMT menu 3.1 (LAN) or in menu 11.5 (WAN) is applied to block a Telnet,
FTP or Web service.
2 You have disabled that service in one of the remote management screens.
3 The IP address in the Secured Client IP field does not match the client IP address. If it does not match, the ZyAIR will disconnect the session immediately.
4 There is already another remote management session with an equal or higher priority running. You may only have one remote management session running at one time.
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12.1.2 Remote Management and NAT
When NAT is enabled:
• Use the ZyAIR’s WAN IP address when configuring from the WAN.
• Use the ZyAIR’s LAN IP address when configuring from the LAN.
12.1.3 System Timeout
There is a default system management idle timeout of five minutes (three hundred seconds).
The ZyAIR automatically logs you out if the management session remains idle for longer than this timeout period. The management session does not time out when a statistics screen is polling. You can change the timeout period in the System screen
12.2 Configuring WWW
To change your ZyAIR’s World Wide Web settings, click REMOTE MGNT to display the
WWW screen.
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Figure 82 Remote Management: WWW
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The following table describes the labels in this screen.
Table 45 Remote Management: WWW
LABEL DESCRIPTION
HTTPS
Server Certificate Select the Server Certificate that the ZyAIR will use to identify itself. The ZyAIR is the SSL server and must always authenticate itself to the SSL client (the computer which requests the HTTPS connection with the ZyAIR).
Authenticate
Client Certificates
Select Authenticate Client Certificates (optional) to require the SSL client to authenticate itself to the ZyAIR by sending the ZyAIR a certificate. To do that the
SSL client must have a CA-signed certificate from a CA that has been imported as a trusted CA on the ZyAIR (see the appendix on importing certificates for details).
Server Port
Server Access
The HTTPS proxy server listens on port 443 by default. If you change the HTTPS proxy server port to a different number on the ZyAIR, for example 8443, then you must notify people who need to access the ZyAIR web configurator to use "https://
ZyAIR IP Address: 8443 " as the URL.
Select a ZyAIR interface from Server Access on which incoming HTTPS access is allowed.
You can allow only secure web configurator access by setting the HTTP Server
Access field to Disable and setting the HTTPS Server Access field to an interface(s).
Secured Client IP
Address
A secure client is a “trusted” computer that is allowed to communicate with the
ZyAIR using this service.
Select All to allow any computer to access the ZyAIR using this service.
Choose Selected to just allow the computer with the IP address that you specify to access the ZyAIR using this service.
WWW
Server Port You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management.
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Table 45 Remote Management: WWW
LABEL DESCRIPTION
Server Access
Secured Client IP
Address
Apply
Reset
Select the interface(s) through which a computer may access the ZyAIR using this service.
A secured client is a “trusted” computer that is allowed to communicate with the
ZyAIR using this service.
Select All to allow any computer to access the ZyAIR using this service.
Choose Selected to just allow the computer with the IP address that you specify to access the ZyAIR using this service.
Click Apply to save your customized settings and exit this screen.
Click Reset to begin configuring this screen afresh.
12.3 Configuring Telnet
You can configure your ZyAIR for remote Telnet access as shown next. The administrator uses Telnet from a computer on a remote network to access the ZyAIR.
Figure 83 Telnet Configuration on a TCP/IP Network
12.4 Configuring TELNET
Click REMOTE MGNT and the TELNET tab to display the screen as shown.
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Figure 84 Remote Management: Telnet
The following table describes the labels in this screen.
Table 46 Remote Management: Telnet
LABEL DESCRIPTION
Server Port
Server Access
You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management.
Select the interface(s) through which a computer may access the ZyAIR using this service.
Secured Client IP
Address
A secured client is a “trusted” computer that is allowed to communicate with the
ZyAIR using this service.
Select All to allow any computer to access the ZyAIR using this service.
Choose Selected to just allow the computer with the IP address that you specify to access the ZyAIR using this service.
Apply
Reset
Click
Click
Apply
Reset
to save your customized settings and exit this screen.
to begin configuring this screen afresh.
12.5 Configuring FTP
You can upload and download the ZyAIR’s firmware and configuration files using FTP, please see the chapter on firmware and configuration file maintenance for details. To use this feature, your computer must have an FTP client.
To change your ZyAIR’s FTP settings, click REMOTE MGMT , then the FTP tab. The screen appears as shown.
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Figure 85 Remote Management: FTP
The following table describes the labels in this screen.
Table 47 Remote Management: FTP
LABEL DESCRIPTION
Server Port
Server Access
You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management.
Select the interface(s) through which a computer may access the ZyAIR using this service.
Secured Client IP
Address
A secured client is a “trusted” computer that is allowed to communicate with the
ZyAIR using this service.
Select All to allow any computer to access the ZyAIR using this service.
Choose Selected to just allow the computer with the IP address that you specify to access the ZyAIR using this service.
Apply
Reset
Click Apply to save your customized settings and exit this screen.
Click Reset to begin configuring this screen afresh.
12.6 SNMP
Simple Network Management Protocol (SNMP) is a protocol used for exchanging management information between network devices. SNMP is a member of the TCP/IP protocol suite. Your ZyAIR supports SNMP agent functionality, which allows a manager station to manage and monitor the ZyAIR through the network. The ZyAIR supports SNMP version one (SNMPv1) and version two (SNMPv2c). The next figure illustrates an SNMP management operation. SNMP is only available if TCP/IP is configured.
Note: SNMP is only available if TCP/IP is configured.
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Figure 86 SNMP Management Model
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An SNMP managed network consists of two main types of component: agents and a manager.
An agent is a management software module that resides in a managed device (the ZyAIR). An agent translates the local management information from the managed device into a form compatible with SNMP. The manager is the console through which network administrators perform network management functions. It executes applications that control and monitor managed devices.
The managed devices contain object variables/managed objects that define each piece of information to be collected about a device. Examples of variables include such as number of packets received, node port status etc. A Management Information Base (MIB) is a collection of managed objects. SNMP allows a manager and agents to communicate for the purpose of accessing these objects.
SNMP itself is a simple request/response protocol based on the manager/agent model. The manager issues a request and the agent returns responses using the following protocol operations:
• Get - Allows the manager to retrieve an object variable from the agent.
• GetNext - Allows the manager to retrieve the next object variable from a table or list within an agent. In SNMPv1, when a manager wants to retrieve all elements of a table from an agent, it initiates a Get operation, followed by a series of GetNext operations.
• Set - Allows the manager to set values for object variables within an agent.
• Trap - Used by the agent to inform the manager of some events.
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12.6.1 Supported MIBs
The ZyAIR supports MIB II that is defined in RFC-1213 and RFC-1215 as well as the proprietary ZyXEL private MIB. The purpose of the MIBs is to let administrators collect statistical data and monitor status and performance.
12.6.2 SNMP Traps
The ZyAIR can send the following traps to the SNMP manager.
Table 48 SNMP Traps
TRAP NAME
OBJECT IDENTIFIER #
(OID)
DESCRIPTION
Generic Traps coldStart warmStart linkDown linkUp authenticationFailure
(defined in RFC-1215 )
1.3.6.1.6.3.1.1.5.1
1.3.6.1.6.3.1.1.5.2
1.3.6.1.6.3.1.1.5.3
1.3.6.1.6.3.1.1.5.4
1.3.6.1.6.3.1.1.5.5
This trap is sent after booting (power on). This trap is defined in RFC-1215.
This trap is sent after booting (software reboot). This trap is defined in RFC-1215.
This trap is sent when the Ethernet link is down.
This trap is sent when the Ethernet link is up.
The device sends this trap when it receives any SNMP get or set requirements with the wrong community (password).
Note: snmpEnableAuthenTraps, OID
1.3.6.1.2.1.11.30 (defined in RFC 1214 and
RFC 1907) must be enabled on in order for the device to send authenticationFailure traps.
Use a MIB browser to enable or disable snmpEnableAuthenTraps.
Traps defined in the
ZyXEL Private MIB.
whyReboot 1.3.6.1.4.1.890.1.5.13.0.1 This trap is sent with the reason for restarting before the system reboots (warm start).
"System reboot by user!" is added for an intentional reboot (for example, download new files, CI command "sys reboot").
If the system reboots because of fatal errors, a code for the error is listed.
pwStaAssociation 1.3.6.1.4.1.890.1.9.2.3.1.1 This trap is sent when a wireless client has successfully connected to the AP. The MAC address of the wireless client and the ESSID are listed.
pwWlanStaDisassociation 1.3.6.1.4.1.890.1.9.2.3.1.2 This trap is sent when a wireless client has disconnected from the AP. The MAC address of the wireless client and the ESSID are listed.
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Table 48 SNMP Traps
TRAP NAME pwWlanStaAuthFail pwTFTPStatus
OBJECT IDENTIFIER #
(OID)
DESCRIPTION
1.3.6.1.4.1.890.1.9.2.3.2.1 This trap is sent when a wireless client has failed to connect to the AP. The MAC address of the wireless client, the ESSID and the reason are listed.
1.3.6.1.4.1.890.1.9.2.3.3.1 This trap is sent to indicate the status and result of a TFTP client session that has ended.
12.7 SNMP Traps
Some traps include an SNMP interface index. The following table maps the SNMP interface indexes to the ZyAIR’s physical ports.
Table 49 SNMP Interface Index to Physical Port Mapping
INTERFACE TYPE enet0 enet1
PHYSICAL PORT
WLAN
Ethernet port
12.7.1 Configuring SNMP
To change your ZyAIR’s SNMP settings, click REMOTE MGMT , then the SNMP tab. The screen appears as shown.
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Figure 87 Remote Management: SNMP
144
The following table describes the labels in this screen.
Table 50 Remote Management: SNMP
LABEL DESCRIPTION
SNMP Configuration
Get Community
Set Community
Community
Enter the Get Community , which is the password for the incoming Get and
GetNext requests from the management station. The default is public and allows all requests.
Enter the Set community , which is the password for incoming Set requests from the management station. The default is public and allows all requests.
Type the trap community, which is the password sent with each trap to the
SNMP manager. The default is public and allows all requests.
Type the IP address of the station to send your SNMP traps to.
Destination
SNMP
Service Port
Service Access
Secured Client IP
Address
Apply
Reset
You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management.
Select the interface(s) through which a computer may access the ZyAIR using this service.
A secured client is a “trusted” computer that is allowed to communicate with the
ZyAIR using this service.
Select All to allow any computer to access the ZyAIR using this service.
Choose Selected to just allow the computer with the IP address that you specify to access the ZyAIR using this service.
Click Apply to save your customized settings and exit this screen.
Click Reset to begin configuring this screen afresh.
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C H A P T E R 13
Log Screens
This chapter contains information about configuring general log settings and viewing the
ZyAIR’s logs. Refer to the appendix for example log message explanations.
13.1 Configuring View Log
The web configurator allows you to look at all of the ZyAIR’s logs in one location.
Click the LOGS links under ADVANCED to open the View Log screen. Use the View Log screen to see the logs for the categories that you selected in the Log Settings screen (see
). Options include logs about system maintenance, system errors and access control.
You can view logs and alert messages in this page. Once the log entries are all used, the log will wrap around and the old logs will be deleted.
Click a column heading to sort the entries. A triangle indicates the direction of the sort order.
Figure 88 View Log
The following table describes the labels in this screen.
Table 51 View Log
LABEL
Display
Time
Message
Source
Destination
DESCRIPTION
Select a log category from the drop down list box to display logs within the selected category. To view all logs, select All Logs .
The number of categories shown in the drop down list box depends on the selection in the Log Settings page.
This field displays the time the log was recorded.
This field states the reason for the log.
This field lists the source IP address and the port number of the incoming packet.
This field lists the destination IP address and the port number of the incoming packet.
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Table 51 View Log
LABEL
Notes
Email Log Now
Refresh
Clear Log
DESCRIPTION
This field displays additional information about the log entry.
Click Email Log Now to send the log screen to the e-mail address specified in the Log Settings page.
Click Refresh to renew the log screen.
Click Clear Log to clear all the logs.
13.2 Configuring Log Settings
To change your ZyAIR’s log settings, click the LOGS links under ADVANCED and then the
Log Settings tab. The screen appears as shown.
Use the Log Settings screen to configure to where the ZyAIR is to send the logs; the schedule for when the ZyAIR is to send the logs and which logs and/or immediate alerts the ZyAIR is to send.
An alert is a type of log that warrants more serious attention. Some categories such as System
Errors consist of both logs and alerts. You may differentiate them by their color in the View
Log screen. Alerts are displayed in red and logs are displayed in black.
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Figure 89 Log Settings
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The following table describes the labels in this screen.
Table 52 Log Settings
DESCRIPTION LABEL
Address Info
Mail Server
Mail Subject
Send Log to
Send Alerts to
Syslog Logging
Active
Syslog Server IP
Address
Log Facility
Enter the server name or the IP address of the mail server for the e-mail addresses specified below. If this field is left blank, logs and alert messages will not be sent via e-mail.
Type a title that you want to be in the subject line of the log e-mail message that the ZyAIR sends.
Logs are sent to the e-mail address specified in this field. If this field is left blank, logs will not be sent via e-mail.
Enter the e-mail address where the alert messages will be sent. If this field is left blank, alert messages will not be sent via e-mail.
Syslog logging sends a log to an external syslog server used to store logs.
Click Active to enable syslog logging.
Enter the server name or IP address of the syslog server that will log the selected categories of logs.
Select a location from the drop down list box. The log facility allows you to log the messages to different files in the syslog server. Refer to the documentation of your syslog program for more details.
Send Log
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Table 52 Log Settings
LABEL DESCRIPTION
Log Schedule This drop-down menu is used to configure the frequency of log messages being sent as E-mail:
• Daily
• Weekly
• Hourly
• When Log is Full
• None.
If the Weekly or the Daily option is selected, specify a time of day when the Email should be sent. If the Weekly option is selected, then also specify which day of the week the E-mail should be sent. If the When Log is Full option is selected, an alert is sent when the log fills up. If you select None , no log messages are sent.
Day for Sending Log This field is only available when you select Weekly in the Log Schedule field.
Use the drop down list box to select which day of the week to send the logs.
Time for Sending Log Enter the time of the day in 24-hour format (for example 23:00 equals 11:00 pm) to send the logs.
Clear log after sending mail
Select the check box to clear all logs after logs and alert messages are sent via e-mail.
Log Select the categories of logs that you want to record.
Send Immediate Alert Select the categories of alerts for which you want the ZyAIR to immediately send e-mail alerts.
Apply
Reset
Click Apply to save your customized settings and exit this screen.
Click Reset to reconfigure all the fields in this screen.
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C H A P T E R 14
Maintenance
This chapter displays system information such as ZyNOS firmware, port IP addresses and port traffic statistics.
14.1 Maintenance Overview
The maintenance screens can help you view system information, upload new firmware, manage configuration and restart your ZyAIR.
14.2 System Status Screen
Click MAINTENANCE to open the System Status screen, where you can use to monitor your ZyAIR. Note that these labels are READ-ONLY and are meant to be used for diagnostic purposes.
Figure 90 System Status
The following table describes the labels in this screen.
Table 53 System Status
LABEL
System Name
ZyNOS Firmware
Version
IP Address
IP Subnet Mask
DHCP
Show Statistics
DESCRIPTION
This is the System Name you enter in the first Internet Access Wizard screen.
It is for identification purposes
This is the ZyNOS Firmware version and the date created. ZyNOS is ZyXEL's proprietary Network Operating System design.
This is the Ethernet port IP address.
This is the Ethernet port subnet mask.
This is the Ethernet port DHCP role - Client or None .
Click Show Statistics to see router performance statistics such as number of packets sent and number of packets received for each port.
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14.2.1 System Statistics
Read-only information here includes port status, packet specific statistics and bridge link status. Also provided are "system up time" and "poll interval(s)". The Poll Interval field is configurable.
Figure 91 System Status: Show Statistics
150
The following table describes the labels in this screen.
Table 54 System Status: Show Statistics
LABEL
Port
Status
TxPkts
RxPkts
Collisions
Tx B/s
Rx B/s
Up Time
Bridge Link #
Active
Remote Bridge MAC
Address
Status
DESCRIPTION
This is the Ethernet or wireless port.
This shows the port speed and duplex setting if you are using Ethernet encapsulation for the Ethernet port.
This shows the transmission speed only for wireless port.
This is the number of transmitted packets on this port.
This is the number of received packets on this port.
This is the number of collisions on this port.
This shows the transmission speed in bytes per second on this port.
This shows the reception speed in bytes per second on this port.
This is total amount of time the line has been up.
This is the index number of the bridge connection.
This shows whether the bridge connection is activated or not.
This is the MAC address of the peer device in bridge mode.
This shows the current status of the bridge connection, which can be Up or
Down .
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Table 54 System Status: Show Statistics
LABEL
TxPkts
RxPkts
System Up Time
Poll Interval(s)
Set Interval
Stop
DESCRIPTION
This is the number of transmitted packets on the wireless bridge.
This is the number of received packets on the wireless bridge.
This is the total time the ZyAIR has been on.
Enter the time interval for refreshing statistics.
Click this button to apply the new poll interval you entered above.
Click this button to stop refreshing statistics.
14.3 Association List
View the wireless stations that are currently associated to the ZyAIR in the Association List screen.
Click MAINTENANCE and then the Association List tab to display the screen as shown next.
Figure 92 Association List
The following table describes the labels in this screen.
Table 55 Association List
LABEL DESCRIPTION
Stations
#
MAC Address
Association Time
Name (SSID)
This is the index number of an associated wireless station.
This field displays the MAC address of an associated wireless station.
This field displays the time a wireless station first associated with the ZyAIR.
This field displays the SSID to which the wireless station is associated.
WDS Link
This screen displays when bridge mode is activated on the ZyAIR.
Link No
MAC Address
Link Time
This field displays the index number of a bridge connection on the WDS.
This field displays a remote bridge MAC address.
This field displays the WDS link up-time.
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Table 55 Association List
LABEL
Privacy
Refresh
DESCRIPTION
This field displays whether traffic on the WDS is encrypted or not.
Click Refresh to reload the screen.
14.4 Channel Usage
The Channel Usage screen shows whether a channel is used by another wireless network or not. If a channel is being used, you should select a channel removed from it by five channels to completely avoid overlap.
Click MAINTENANCE and then the Channel Usage tab to display the screen shown next.
Wait a moment while the ZyAIR compiles the information.
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Figure 93 Channel Usage
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The following table describes the labels in this screen.
Table 56 Channel Usage
LABEL
SSID
MAC Address
Channel
Signal
DESCRIPTION
This is the Service Set IDentification name of the AP in an Infrastructure wireless network or wireless station in an Ad-Hoc wireless network. For our purposes, we define an Infrastructure network as a wireless network that uses an AP and an Ad-Hoc network (also known as Independent Basic Service Set
(IBSS)) as one that doesn’t. See the Wireless Configuration and Roaming chapter for more information on basic service sets (BSS) and extended service sets (ESS).
This field displays the MAC address of the AP in an Infrastructure wireless network. It is randomly generated (so ignore it) in an Ad-Hoc wireless network.
This is the index number of the channel currently used by the associated AP in an Infrastructure wireless network or wireless station in an Ad-Hoc wireless network.
This field displays the strength of the AP’s signal. If you must choose a channel that’s currently in use, choose one with low signal strength for minimum interference.
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Table 56 Channel Usage
LABEL
Network Mode
Refresh
DESCRIPTION
“Network mode” in this screen refers to your wireless LAN infrastructure (refer to the Wireless LAN chapter) and WEP setup.
Network modes are: Infrastructure (same as an extended service set ESS)),
Infrastructure with WEP (WEP encryption is enabled), Ad-Hoc (same as an independent basic service set IBSS)), or Ad-Hoc with WEP .
Click Refresh to reload the screen.
14.5 F/W Upload Screen
Find firmware at www.zyxel.com in a file that (usually) uses the system model name with a
"*.bin" extension, e.g., "zyair.bin". The upload process uses HTTP (Hypertext Transfer
Protocol) and may take up to two minutes. After a successful upload, the system will reboot.
See the Firmware and Configuration File Maintenance chapter for upgrading firmware using
FTP/TFTP commands.
Click MAINTENANCE and then F/W Upload . Follow the instructions in this screen to upload firmware to your ZyAIR.
Figure 94 Firmware Upload
154
The following table describes the labels in this screen.
Table 57 Firmware Upload
LABEL
File Path
Browse...
Upload
DESCRIPTION
Type in the location of the file you want to upload in this field or click Browse ...
to find it.
Click Browse...
to find the .bin file you want to upload. Remember that you must decompress compressed (.zip) files before you can upload them.
Click Upload to begin the upload process. This process may take up to two minutes.
Note: Do not turn off the ZyAIR while firmware upload is in progress!
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After you see the Firmware Upload in Process screen, wait two minutes before logging into the ZyAIR again.
Figure 95 Firmware Upload In Process
The ZyAIR automatically restarts in this time causing a temporary network disconnect. In some operating systems, you may see the following icon on your desktop.
Figure 96 Network Temporarily Disconnected
After two minutes, log in again and check your new firmware version in the System Status screen.
If the upload was not successful, the following screen will appear. Click Return to go back to the F/W Upload screen.
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Figure 97 Firmware Upload Error
14.6 Configuration Screen
See the Firmware and Configuration File Maintenance chapter for transferring configuration files using FTP/TFTP commands.
Click MAINTENANCE , and then the Configuration tab. Information related to factory defaults, backup configuration, and restoring configuration appears as shown next.
Figure 98 Configuration
14.6.1 Backup Configuration
Backup configuration allows you to back up (save) the ZyAIR’s current configuration to a file on your computer. Once your ZyAIR is configured and functioning properly, it is highly recommended that you back up your configuration file before making configuration changes.
The backup configuration file will be useful in case you need to return to your previous settings.
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Click Backup to save the ZyAIR’s current configuration to your computer.
14.6.2 Restore Configuration
Restore configuration allows you to upload a new or previously saved configuration file from your computer to your ZyAIR.
Table 58 Restore Configuration
LABEL
File Path
Browse...
Upload
DESCRIPTION
Type in the location of the file you want to upload in this field or click Browse ...
to find it.
Click Browse...
to find the file you want to upload. Remember that you must decompress compressed (.ZIP) files before you can upload them.
Click Upload to begin the upload process.
Note: Do not turn off the ZyAIR while configuration file upload is in progress.
After you see a “restore configuration successful” screen, you must then wait one minute before logging into the ZyAIR again.
Figure 99 Configuration Upload Successful
The ZyAIR automatically restarts in this time causing a temporary network disconnect. In some operating systems, you may see the following icon on your desktop.
Figure 100 Network Temporarily Disconnected
If you uploaded the default configuration file you may need to change the IP address of your computer to be in the same subnet as that of the default ZyAIR IP address (192.168.1.2). See your Quick Installation Guide for details on how to set up your computer’s IP address.
If the upload was not successful, the following screen will appear. Click Return to go back to the Configuration screen.
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Figure 101 Configuration Upload Error
14.6.3 Back to Factory Defaults
Pressing the Reset button in this section clears all user-entered configuration information and returns the ZyAIR to its factory defaults as shown on the screen. The following warning screen will appear.
Figure 102 Reset Warning Message
You can also press the RESET button on the side panel to reset the factory defaults of your
ZyAIR. Refer to the section on resetting the ZyAIR for more information on the RESET button.
14.7 Restart Screen
System restart allows you to reboot the ZyAIR without turning the power off.
Click MAINTENANCE , and then Restart . Click Restart to have the ZyAIR reboot. This does not affect the ZyAIR's configuration.
Figure 103 Restart Screen
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C H A P T E R 15
Introducing the SMT
This chapter describes how to access the SMT and provides an overview of its menus .
15.1 Connect to your ZyAIR Using Telnet
The following procedure details how to telnet into your ZyAIR.
1 In Windows, click Start (usually in the bottom left corner), Run and then type “telnet
192.168.1.2” (the default IP address) and click OK .
2 For your first login, enter the default password “1234”. As you type the password, the screen displays an asterisk “*” for each character you type.
Figure 104 Login Screen
Password : xxxx
3 After entering the password you will see the main menu.
Please note that if there is no activity for longer than five minutes (default timeout period) after you log in, your ZyAIR will automatically log you out. You will then have to telnet into the ZyAIR again. You can use the web configurator or the CI commands to change the inactivity time out period.
15.2 Changing the System Password
Change the ZyAIR default password by following the steps shown next.
1 From the main menu, enter 23 to display Menu 23 – System Security .
2 Enter 1 to display Menu 23.1 – System Security – Change Password as shown next.
3 Type your existing system password in the Old Password field, and press [ENTER] .
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Figure 105 Menu 23.1 System Security: Change Password
Menu 23.1 – System Security – Change Password
Old Password= ****
New Password= ?
Retype to confirm= ?
Enter here to CONFIRM or ESC to CANCEL:
4 Type your new system password in the New Password field (up to 30 characters), and press [ENTER] .
5 Re-type your new system password in the Retype to confirm field for confirmation and press [ENTER] .
Note that as you type a password, the screen displays an asterisk “*” for each character you type.
15.3 ZyAIR SMT Menu Overview Example
The following table gives you an overview of your ZyAIR’s various SMT menus.
Table 59 SMT Menus Overview
MENUS
1 General Setup
3 LAN Setup
SUB MENUS
1.1 Configure Dynamic DNS
3.2 TCP/IP Setup
3.5 Wireless LAN Setup 3.5.1 WLAN MAC Address Filter
3.5.2 Roaming Configuration
3.5.4 Bridge Link Configuration
3.5.6 SSID Profile Edit
14 Dial-in User Setup
16 VLAN Setup
23 System Security 23.1 System Security
23.5 Security Profile Edit
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Table 59 SMT Menus Overview (continued)
MENUS SUB MENUS
24 System Maintenance 24.1 System Status
24.2 System Information and
Console Port Speed
24.3 Log and Trace
24.2.1 System Information
24.2.2 Console Port Speed
24.3.2 Syslog Logging
24.3.4 Call-Triggering Packet
24.4 Diagnostic
24.5 Backup Configuration
24.6 Restore Configuration
24.7 Upload Firmware
24.8 Command Interpreter Mode
24.10 Time and Date Setting
24.11 Remote Management Setup
24.7.1 Upload System Firmware
24.7.2 Upload System Configuration
File
15.4 Navigating the SMT Interface
The SMT (System Management Terminal) is the interface that you use to configure your
ZyAIR.
Several operations that you should be familiar with before you attempt to modify the configuration are listed in the table below.
Table 60 Main Menu Commands
OPERATION KEYSTROKE DESCRIPTION
Move down to another menu
Move up to a previous menu
Move to a “hidden” menu
[ENTER]
[ESC]
To move forward to a submenu, type in the number of the desired submenu and press [ENTER].
Press [ESC] to move back to the previous menu.
Move the cursor
Press [SPACE BAR] to change No to Yes then press [ENTER].
Fields beginning with “Edit” lead to hidden menus and have a default setting of No . Press [SPACE BAR] once to change No to Yes , then press [ENTER] to go to the
“hidden” menu.
[ENTER] or [UP]/
[DOWN] arrow keys.
Within a menu, press [ENTER] to move to the next field.
You can also use the [UP]/[DOWN] arrow keys to move to the previous and the next field, respectively.
Entering information Type in or press
[SPACE BAR], then press [ENTER].
You need to fill in two types of fields. The first requires you to type in the appropriate information. The second allows you to cycle through the available choices by pressing
[SPACE BAR].
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Table 60 Main Menu Commands
OPERATION
Required fields
N/A fields
Save your configuration
Exit the SMT
KEYSTROKE DESCRIPTION
< ?
> or ChangeMe All fields with the symbol <?> must be filled in order to be able to save the new configuration.
All fields with ChangeMe must not be left blank in order to be able to save the new configuration.
<N/A>
[ENTER]
Type 99, then press
[ENTER].
Some of the fields in the SMT will show a <N/A>. This symbol refers to an option that is Not Applicable.
Save your configuration by pressing [ENTER] at the message “Press ENTER to confirm or ESC to cancel”.
Saving the data on the screen will take you, in most cases to the previous menu.
Type 99 at the main menu prompt and press [ENTER] to exit the SMT interface.
After you enter the password, the SMT displays the main menu, as shown next.
Figure 106 G-3000H SMT Main Menu
Copyright (c) 1994 - 2005 ZyXEL Communications Corp.
ZyAIR G-3000H Main Menu
Getting Started Advanced Management
1. General Setup 22. SNMP Configuration
3. LAN Setup 23. System Security
24. System Maintenance
Advanced Applications
14. Dial-in User Setup
16. VLAN Setup
99. Exit
Enter Menu Selection Number:
15.4.1 System Management Terminal Interface Summary
Table 61 Main Menu Summary
#
1
3
14
16
22
23
MENU TITLE
General Setup
LAN Setup
Dial-in User Setup
VLAN Setup
SNMP Configuration
System Security
DESCRIPTION
Use this menu to set up your general information.
Use this menu to set up your LAN and WLAN connection.
Use this menu to set up local user profiles on the ZyAIR.
Use this menu to set up your VLAN.
Use this menu to set up SNMP related parameters.
Use this menu to change your password and enable network user authentication.
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Table 61 Main Menu Summary
#
24
99
MENU TITLE
System Maintenance
Exit
DESCRIPTION
This menu provides system status, diagnostics, software upload, etc.
Use this to exit from SMT and return to a blank screen.
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C H A P T E R 16
General Setup
The chapter shows you the information on general setup.
16.1 General Setup
Menu 1 – General Setup contains administrative and system-related information (shown next). The System Name field is for identification purposes. It is recommended you type your computer's "Computer name".
The Domain Name entry is what is propagated to the DHCP clients on the LAN. While you must enter the host name (System Name) on each individual computer, the domain name can be assigned from the ZyAIR via DHCP.
16.1.1 Procedure To Configure Menu 1
Enter 1 in the Main Menu to open Menu 1 – General Setup as shown next.
Figure 107 Menu 1 General Setup
Menu 1 - General Setup
System Name= G-3000H
Domain Name=
First System DNS Server= From DHCP
IP Address= N/A
Second System DNS Server= None
IP Address= N/A
Third System DNS Server= None
IP Address= N/A
Fill in the required fields. Refer to the following table for more information about these fields.
Table 62 Menu 1 General Setup
FIELD
System Name
Domain Name
DESCRIPTION
Choose a descriptive name for identification purposes. This name can be up to
30 alphanumeric characters long. Spaces are not allowed, but dashes “-” and underscores "_" are accepted.
This is not a required field. Leave this field blank or enter the domain name here if you know it.
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Table 62 Menu 1 General Setup
FIELD DESCRIPTION
First/Second/Third
System DNS Server
Press [SPACE BAR] to select From DHCP , User Defined or None and press
[ENTER].
These fields are not available on all models.
IP Address Enter the IP addresses of the DNS servers. This field is available when you select User-Defined in the field above.
When you have completed this menu, press [ save your configuration, or press [
ENTER ] at the prompt “Press ENTER to Confirm…” to
ESC ] at any time to cancel.
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C H A P T E R 17
LAN Setup
This chapter shows you how to configure the LAN on your ZyAIR.
17.1 LAN Setup
This section describes how to configure the Ethernet using Menu 3 – LAN Setup . From the main menu, enter 3 to display menu 3.
Figure 108 Menu 3 LAN Setup
Menu 3 - LAN Setup
2. TCP/IP Setup
5. Wireless LAN Setup
Enter Menu Selection Number:
Detailed explanation about the LAN Setup menu is given in the next chapter.
17.2 TCP/IP Ethernet Setup
Use menu 3.2 to configure your ZyAIR for TCP/IP.
To edit menu 3.2, enter 3 from the main menu to display Menu 3-LAN Setup . When menu 3 appears, press 2 and press [ENTER] to display Menu 3.2-TCP/IP Setup , as shown next :
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Figure 109 Menu 3.2 TCP/IP Setup
Menu 3.2 - TCP/IP Setup
IP Address Assignment= Static
IP Address= 192.168.1.2
IP Subnet Mask= 255.255.255.0
Gateway IP Address= 0.0.0.0
Follow the instructions in the following table on how to configure the fields in this menu.
Table 63 Menu 3.2 TCP/IP Setup
FIELD DESCRIPTION
IP Address
Assignment
Press [SPACE BAR] and then [ENTER] to select Dynamic to have the ZyAIR obtain an IP address from a DHCP server. You must know the IP address assigned to the
ZyAIR (by the DHCP server) to access the ZyAIR again.
Select Static to give the ZyAIR a fixed, unique IP address. Enter a subnet mask appropriate to your network and the gateway IP address if applicable.
IP Address Enter the (LAN) IP address of your ZyAIR in dotted decimal notation
IP Subnet Mask Your ZyAIR will automatically calculate the subnet mask based on the IP address that you assign. Unless you are implementing subnetting, use the subnet mask computed by the ZyAIR.
Gateway IP
Address
Type the IP address of the gateway. The gateway is an immediate neighbor of your
ZyAIR that will forward the packet to the destination. On the LAN, the gateway must be a router on the same network segment as your ZyAIR.
When you have completed this menu, press [ save your configuration, or press [
ENTER ] at the prompt “Press ENTER to Confirm…” to
ESC ] at any time to cancel.
17.3 Wireless LAN Setup
Use menu 3.5 to set up your ZyAIR as the wireless access point. To edit menu 3.5, enter 3 from the main menu to display Menu 3 – LAN Setup . When menu 3 appears, press 5 and then press [ENTER] to display Menu 3.5 – Wireless LAN Setup as shown next.
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Figure 110 Menu 3.5 Wireless LAN Setup
Menu 3.5 - Wireless LAN Setup
Edit MAC Address Filter= N/A
Operating Mode= Bridge / Repeater Edit Roaming Configuration= N/A
Edit SSID Profile= N/A
Hide Name (SSID)= N/A Select SSID Profile= N/A
Channel ID= CH06 2437MHz Edit Bridge Link Configuration= No
RTS Threshold= 2432 Preamble= Long
Frag. Threshold= 2432 802.11 Mode= Mixed
Max. Frame Burst= 650
Breathing LED= Yes
Block Intra-BSS Traffic= No
Output Power= <11b>17dBm/<11g>13dBm
Edit Layer-2 Isolation= N/A
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
The following table describes the fields in this menu.
Table 64 Menu 3.5 Wireless LAN Setup
FIELD DESCRIPTION
Operating Mode
Name (SSID)
Hide Name (SSID)
Channel ID
RTS Threshold
Frag. Threshold
Press [SPACE BAR] and select Access Point , Bridge / Repeater , AP + Bridge or
MESSID .
This field is not available on all models.
The SSID (Service Set IDentity) identifies the AP to which the wireless stations associate.
Wireless stations associating to the AP must have the same SSID. Enter a descriptive name of up to 32 printable 7-bit ASCII characters.
This field is only available when you select Access Point or AP + Bridge in the Operating
Mode field.
Press [SPACE BAR] and select Yes to hide the SSID in the outgoing data frame so an intruder cannot obtain the SSID through scanning.
Press [SPACE BAR] to select a channel. This allows you to set the operating frequency/ channel depending on your particular region.
Setting this attribute to zero turns on the RTS/CTS handshake. Enter a value between 800 and 2432.
This is the maximum data fragment size that can be sent. Enter a value between 256 and
2432.
Edit MAC Address Filter Press [SPACE BAR] to select Yes and press [ENTER] to display Menu 3.5.1 - WLAN
MAC Address Filter .
Edit Bridge Link
Configuration
Use [SPACE BAR] to choose
Configuration .
Yes and press [ENTER] to go to Menu 3.5.4 - Bridge Link
Edit Roaming
Configuration
Use [SPACE BAR] to choose Yes and press [ENTER] to go to Menu 3.5.2 - Roaming
Configuration . This field is not available when you select Bridge / Repeater in the
Operating Mode field.
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Table 64 Menu 3.5 Wireless LAN Setup
FIELD DESCRIPTION
Edit SSID Profile
Select SSID Profile
Preamble
802.11 Mode
Max. Frame Burst
Breathing LED
Use [SPACE BAR] to choose Yes and press [ENTER] to go to Menu 3.5.6 - SSID Profile
Edit . This field is only available when you select MESSID in the Operating Mode field.
Use [SPACE BAR] to choose an SSID profile. This field is only available when you select
Access Point in the Operating Mode field.
Use [SPACE BAR] to choose a preamble type. Choices are Long , Short and Dynamic .
The default setting is Long .
See the section on preamble for more information.
Select B Only to allow only IEEE 802.11b compliant WLAN devices to associate with the
ZyAIR.
Select G Only to allow only IEEE 802.11g compliant WLAN devices to associate with the
ZyAIR.
Select Mixed to allow either IEEE802.11b or IEEE802.11g compliant WLAN devices to associate with the ZyAIR. The transmission rate of your ZyAIR might be reduced.
Enable Maximum Frame Burst to help eliminate collisions in mixed-mode networks
(networks with both IEEE 802.11g and IEEE 802.11b traffic) and enhance the performance of both pure IEEE 802.11g and mixed IEEE 802.11b/g networks. Maximum Frame Burst sets the maximum time, in microseconds, that the ZyAIR transmits IEEE 802.11g wireless traffic only.
Type the maximum frame burst between 0 and 1800 (650, 1000 or 1800 recommended).
Enter 0 to disable this feature.
Select Yes to enable the Breathing LED, also known as the ZyAIR LED.
The blue ZyAIR LED is on when the ZyAIR is on and blinks (or breaths) when data is being transmitted to/from its wireless stations. Clear the check box to turn this LED off even when the ZyAIR is on and data is being transmitted/received.
Block Intra-BSS Traffic Intra-BSS traffic is traffic between wireless stations in the same BSS. Select No to allow
Intra-BSS traffic, select Yes to block all Intra-BSS traffic.
Output Power Set the output power of the ZyAIR in this field. If there is a high density of APs within an area, decrease the output power of the ZyAIR to reduce interference with other APs.The options are 17dBm (50mW), 15dBm (32mW), 13dBm (20mW), 11dBm (12.6mW) or 7dBm
(5mW) for IEEE802.11b mode and 13dBm (20mW), 11dBm (12.6mW), 9dBm (7.9mW),
7dBm (5mW) or 3dBm (2mW) for IEEE802.11g mode.
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
17.3.1 Configuring MAC Address Filter
Your ZyAIR checks the MAC address of the wireless station device against a list of allowed or denied MAC addresses. However, intruders could fake allowed MAC addresses so MACbased authentication is less secure than EAP authentication.
Follow the steps below to create the MAC address table on your ZyAIR.
1 From the main menu, enter 3 to open Menu 3 – LAN Setup .
2 Enter 5 to display Menu 3.5 – Wireless LAN Setup .
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Figure 111 Menu 3.5 Wireless LAN Setup
Menu 3.5 - Wireless LAN Setup
Edit MAC Address Filter= Yes
Operating Mode= Access Point Edit Roaming Configuration= No
Edit SSID Profile= N/A
Hide Name (SSID)= No Select SSID Profile= SSID01
Channel ID= CH06 2437MHz Edit Bridge Link Configuration= N/A
RTS Threshold= 2432 Preamble= Long
Frag. Threshold= 2432 802.11 Mode= Mixed
Max. Frame Burst= 650
Breathing LED= Yes
Block Intra-BSS Traffic= No
Output Power= <11b>17dBm/<11g>13dBm
Edit Layer-2 Isolation= No
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
3 Press [SPACE BAR] to select Access Point or AP + Bridge in the Operating Mode field and press [ENTER].
4 In the Edit MAC Address Filter field, press [SPACE BAR] to select Yes and press
[ENTER].
Menu 3.5.1 – WLAN MAC Address Filter displays as shown next.
Figure 112 Menu 3.5.1 WLAN MAC Address Filter
Menu 3.5.1 - WLAN MAC Address Filter
Active= No
Filter Action= Allowed Association
------------------------------------------------------------------------------
1= 00:00:00:00:00:00 13= 00:00:00:00:00:00 25= 00:00:00:00:00:00
2= 00:00:00:00:00:00 14= 00:00:00:00:00:00 26= 00:00:00:00:00:00
3= 00:00:00:00:00:00 15= 00:00:00:00:00:00 27= 00:00:00:00:00:00
4= 00:00:00:00:00:00 16= 00:00:00:00:00:00 28= 00:00:00:00:00:00
5= 00:00:00:00:00:00 17= 00:00:00:00:00:00 29= 00:00:00:00:00:00
6= 00:00:00:00:00:00 18= 00:00:00:00:00:00 30= 00:00:00:00:00:00
7= 00:00:00:00:00:00 19= 00:00:00:00:00:00 31= 00:00:00:00:00:00
8= 00:00:00:00:00:00 20= 00:00:00:00:00:00 32= 00:00:00:00:00:00
9= 00:00:00:00:00:00 21= 00:00:00:00:00:00
10= 00:00:00:00:00:00 22= 00:00:00:00:00:00
11= 00:00:00:00:00:00 23= 00:00:00:00:00:00
12= 00:00:00:00:00:00 24= 00:00:00:00:00:00
------------------------------------------------------------------------------
Enter here to CONFIRM or ESC to CANCEL:
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The following table describes the fields in this menu.
Table 65 Menu 3.5.1 WLAN MAC Address Filter
FIELD
Active
Filter Action
DESCRIPTION
To enable MAC address filtering, press [SPACE BAR] to select Yes and press [ENTER].
Define the filter action for the list of MAC addresses in the MAC address filter table.
To deny access to the ZyAIR, press [SPACE BAR] to select Deny Association and press
[ENTER]. MAC addresses not listed will be allowed to access the router.
The default action, Allowed Association , permits association with the ZyAIR. MAC addresses not listed will be denied access to the router.
MAC Address Filter
1..32
Enter the MAC addresses (in XX:XX:XX:XX:XX:XX format) of the client computers that are allowed or denied access to the ZyAIR in these address fields.
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
17.3.2 Configuring Roaming
Enable the roaming feature if you have two or more ZyAIRs on the same subnet. Follow the steps below to allow roaming on your ZyAIR.
1 From the main menu, enter 3 to display Menu 3 – LAN Setup .
2 Enter 5 to display Menu 3.5 – Wireless LAN Setup .
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Figure 113 Menu 3.5 Wireless LAN Setup
Menu 3.5 - Wireless LAN Setup
Edit MAC Address Filter= No
Operating Mode= MESSID Edit Roaming Configuration= Yes
Edit SSID Profile= No
Hide Name (SSID)= No Select SSID Profile= N/A
Channel ID= CH06 2437MHz Edit Bridge Link Configuration= No
RTS Threshold= 2432 Preamble= Long
Frag. Threshold= 2432 802.11 Mode= Mixed
Max. Frame Burst= 650
Breathing LED= Yes
Block Intra-BSS Traffic= No
Output Power= <11b>15dBm/<11g>11dBm
Edit Layer-2 Isolation= No
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
3 Move the cursor to the Edit Roaming Configuration field. Press [SPACE BAR] to select Yes and then press [ENTER]. Menu 3.5.2 – Roaming Configuration displays as shown next.
Figure 114 Menu 3.5.2 Roaming Configuration
Menu 3.5.2 - Roaming Configuration
Active= Yes
Port #= 3517
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
The following table describes the fields in this menu.
Table 66 Menu 3.5.2 Roaming Configuration
FIELD DESCRIPTION
Active
Port #
Press [SPACE BAR] and then [ENTER] to select Yes to enable roaming on the
ZyAIR if you have two or more ZyAIRs on the same subnet.
Type the port number to communicate roaming information between access points. The port number must be the same on all access points. The default is
3517. Make sure this port is not used by other services.
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
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17.3.3 Configuring SSID Profiles
Follow the steps below to configure SSID profiles on your ZyAIR.
1 From the main menu, enter 3 to open Menu 3 – LAN Setup .
2 Enter 5 to display Menu 3.5 – Wireless LAN Setup .
Figure 115 Menu 3.5 Wireless LAN Setup
Menu 3.5 - Wireless LAN Setup
Edit MAC Address Filter= No
Operating Mode= MESSID Edit Roaming Configuration= No
Edit SSID Profile= Yes
Hide Name (SSID)= No Select SSID Profile= N/A
Channel ID= CH06 2437MHz Edit Bridge Link Configuration= No
RTS Threshold= 2432 Preamble= Long
Frag. Threshold= 2432 802.11 Mode= Mixed
Max. Frame Burst= 650
Breathing LED= Yes
Block Intra-BSS Traffic= No
Output Power= <11b>15dBm/<11g>11dBm
Edit Layer-2 Isolation= No
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
3 In the Operating Mode field, press [SPACE BAR] to select MESSID and press
[ENTER].
4 Move the cursor to the Edit SSID Profile field. Press [SPACE BAR] to select Yes and press [ENTER].
Menu 3.5.6 - SSID Profile Edit displays as shown next.
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Figure 116 Menu 3.5.6 - SSID Profile Edit
Menu 3.5.6 - SSID Profile Edit
1 SSID03 5 SSID01
Active= Yes Active= No
2 SSID01 6 SSID01
Active= No Active= No
3 SSID01 7 SSID01
Active= No Active= No
4 SSID01 8 SSID01
Active= No Active= No
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
The following table describes the fields in this menu.
Table 67 Menu 3.5.6 - SSID Profile Edit
FIELD DESCRIPTION
SSID 1~8 Press [SPACE BAR] to select an SSID from 1 to 16. The SSID (Service Set
IDentity) identifies the Service Set with which a wireless station is associated.
Wireless stations associating to the access point (AP) must have the same
SSID.
Active Press [SPACE BAR] to select Yes or No and press [ENTER].
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
17.3.4 Configuring Bridge Link
Follow the steps below to configure bridge link on your ZyAIR.
1 From the main menu, enter 3 to open Menu 3 – LAN Setup .
2 Enter 5 to display Menu 3.5 – Wireless LAN Setup .
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Figure 117 Menu 3.5 Wireless LAN Setup
Menu 3.5 - Wireless LAN Setup
Edit MAC Address Filter= N/A
Operating Mode= Bridge / Repeater Edit Roaming Configuration= N/A
Edit SSID Profile= N/A
Hide Name (SSID)= N/A Select SSID Profile= N/A
Channel ID= CH06 2437MHz Edit Bridge Link Configuration= Yes
RTS Threshold= 2432 Preamble= Long
Frag. Threshold= 2432 802.11 Mode= Mixed
Max. Frame Burst= 650
Breathing LED= Yes
Block Intra-BSS Traffic= No
Output Power= <11b>15dBm/<11g>11dBm
Edit Layer-2 Isolation= N/A
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
3 In the Operating Mode field, press [SPACE BAR] to select Bridge / Repeater or AP
+ Bridge and press [ENTER].
4 Move the cursor to the Edit Bridge Link Configuration field. Press [SPACE BAR] to select Yes and press [ENTER].
Menu 3.5.4 – Bridge Link Configuration displays as shown next.
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Figure 118 Menu 3.5.4 Bridge Link Configuration
Menu 3.5.4 - Bridge Link Configuration
Enable Link 1= Yes Peer MAC Address= 0b:16:21:2c:37:45
PSK= ********
Enable Link 2= No Peer MAC Address= 00:0b:16:2c:37:3d
PSK= ********
Enable Link 3= Yes Peer MAC Address= 0b:16:21:2c:37:3e
PSK= ********
Enable Link 4= No Peer MAC Address= 0b:16:21:2c:37:3f
PSK= ********
Enable Link 5= Yes Peer MAC Address= 0b:16:21:2c:37:40
PSK= ********
Enable WDS Security= Yes
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
The following table describes the fields in this menu.
Table 68 Menu 3.5.4 Bridge Link Configuration
FIELD DESCRIPTION
Enable Link 1 ~ 5
Peer MAC Address
PSK
Press [SPACE BAR] to select Yes or No and press [ENTER].
Type the MAC address of peer device in valid MAC address format, that is, six hexadecimal character pairs, for example, 12:34:56:78:9a:bc.
Type a pre-shared key from 8 to 63 case-sensitive ASCII characters (including spaces and symbols)
Enable WDS Security Select Yes to enable WDS on your ZyAIR. A Wireless Distribution System
(WDS) is a wireless connection between two or more APs.
When you select Yes , you are prompted to type a Pre-Shared Key (PSK) in the
PSK fields of each bridge link you want to configure. The ZyAIR uses TKIP to encrypt traffic on the WDS between AP’s.
Note: Other AP’s must use the same encryption method to enable WDS.
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
17.3.5 Configuring Layer-2 Isolation
Follow the steps below to configure layer-2 isolation on your ZyAIR.
1 From the main menu, enter 3 to open Menu 3 – LAN Setup .
2 Enter 5 to display Menu 3.5 – Wireless LAN Setup .
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Figure 119 Menu 3.5 Wireless LAN Setup
Menu 3.5 - Wireless LAN Setup
Edit MAC Address Filter= No
Operating Mode= MESSID Edit Roaming Configuration= No
Edit SSID Profile= No
Hide Name (SSID)= No Select SSID Profile= N/A
Channel ID= CH06 2437MHz Edit Bridge Link Configuration= No
RTS Threshold= 2432 Preamble= Long
Frag. Threshold= 2432 802.11 Mode= Mixed
Max. Frame Burst= 650
Breathing LED= Yes
Block Intra-BSS Traffic= No
Output Power= <11b>17dBm/<11g>13dBm
Edit Layer-2 Isolation= Yes
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
3 Move the cursor to the Edit Layer-2 Isolation field. Press [SPACE BAR] to select Yes and press [ENTER]. Menu 3.5.5 – Layer 2 Isolation displays as shown next.
Figure 120 Menu 3.5.5 Layer-2 Isolation
Menu 3.5.5 - Layer-2 Isolation
Allow devices with these MAC addresses
------------------------------------------------------------------------------
1= 00:00:00:00:00:00 13= 00:00:00:00:00:00 25= 00:00:00:00:00:00
2= 00:00:00:00:00:00 14= 00:00:00:00:00:00 26= 00:00:00:00:00:00
3= 00:00:00:00:00:00 15= 00:00:00:00:00:00 27= 00:00:00:00:00:00
4= 00:00:00:00:00:00 16= 00:00:00:00:00:00 28= 00:00:00:00:00:00
5= 00:00:00:00:00:00 17= 00:00:00:00:00:00 29= 00:00:00:00:00:00
6= 00:00:00:00:00:00 18= 00:00:00:00:00:00 30= 00:00:00:00:00:00
7= 00:00:00:00:00:00 19= 00:00:00:00:00:00 31= 00:00:00:00:00:00
8= 00:00:00:00:00:00 20= 00:00:00:00:00:00 32= 00:00:00:00:00:00
9= 00:00:00:00:00:00 21= 00:00:00:00:00:00
10= 00:00:00:00:00:00 22= 00:00:00:00:00:00
11= 00:00:00:00:00:00 23= 00:00:00:00:00:00
12= 00:00:00:00:00:00 24= 00:00:00:00:00:00
------------------------------------------------------------------------------
Press ENTER to Confirm or ESC to Cancel:
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The following table describes the fields in this menu.
Table 69 Menu 3.5.5 Layer-2 Isolation
FIELD DESCRIPTION
Allow devices with these MAC addresses
These are the MAC address of a wireless client, AP, computer or router. A wireless client associated with the ZyAIR can communicate with another wireless client, AP, computer or router only if the MAC addresses of those devices are listed in this table.Type the MAC addresses of the wireless client,
AP, computer or router that you want to allow the ZyAIR associated wireless clients to have access to in these address fields. Type the MAC address in a valid MAC address format, that is, six hexadecimal character pairs, for example, 12:34:56:78:9a:bc.F
Note: The Block Intra-BSS Traffic changes from No to Yes when you enable layer-2 isolation.
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
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C H A P T E R 18
Dial-in User Setup
This chapter shows you how to create user accounts on the ZyAIR.
18.1 Dial-in User Setup
By storing user profiles locally, your ZyAIR is able to authenticate wireless users without interacting with a network RADIUS server.
Follow the steps below to set up user profiles on your ZyAIR.
From the main menu, enter 14 to display Menu 14 - Dial-in User Setup .
Figure 121 Menu 14- Dial-in User Setup
Menu 14 - Dial-in User Setup
1. ________ 9. ________ 17. ________ 25. ________
2. ________ 10. ________ 18. ________ 26. ________
3. ________ 11. ________ 19. ________ 27. ________
4. ________ 12. ________ 20. ________ 28. ________
5. ________ 13. ________ 21. ________ 29. ________
6. ________ 14. ________ 22. ________ 30. ________
7. ________ 15. ________ 23. ________ 31. ________
8. ________ 16. ________ 24. ________ 32. ________
Enter Menu Selection Number:
Type a number and press [ENTER] to edit the user profile.
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Figure 122 Menu 14.1- Edit Dial-in User
Menu 14.1 - Edit Dial-in User
User Name= test
Active= Yes
Password= ********
Press ENTER to Confirm or ESC to Cancel:
Leave name field blank to delete profile
The following table describes the fields in this screen.
Table 70 Menu 14.1- Edit Dial-in User
FIELD DESCRIPTION
User Name Enter a username up to 31 alphanumeric characters long for this user profile.
This field is case sensitive.
Active Press [SPACE BAR] to select Yes and press [ENTER] to enable the user profile.
Enter a password up to 31 characters long for this user profile. Password
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
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C H A P T E R 19
VLAN Setup
This chapter explains VLAN Setup menu 16. Refer to the Multiple-ESS and VLAN chapter for background information on VLAN.
19.1 VLAN Setup
To setup VLAN, select option 16 from the main menu to open Menu 16 – VLAN Setup as shown next.
Figure 123 Menu 16 VLAN Setup
Menu 16 - VLAN Setup
VLAN Tagging= Yes Native VLAN ID= 1
-----------------------------------------------------------
1.Active= Yes ID= 1 Name= zyxel
2.Active= No ID= N/A Name= N/A
3.Active= No ID= N/A Name= N/A
4.Active= No ID= N/A Name= N/A
5.Active= No ID= N/A Name= N/A
6.Active= No ID= N/A Name= N/A
7.Active= No ID= N/A Name= N/A
8.Active= No ID= N/A Name= N/A
9.Active= No ID= N/A Name= N/A
10.Active= No ID= N/A Name= N/A
11.Active= No ID= N/A Name= N/A
12.Active= No ID= N/A Name= N/A
13.Active= No ID= N/A Name= N/A
14.Active= No ID= N/A Name= N/A
15.Active= No ID= N/A Name= N/A
16.Active= No ID= N/A Name= N/A
-----------------------------------------------------------
Press ENTER to Confirm or ESC to Cancel:
The following table describes the fields in this menu.
Table 71 Menu 16 VLAN Setup
FIELD
VLAN Tagging
Native VLAN ID
Index
DESCRIPTION
To enable VLAN tagging, press [SPACE BAR] to select Yes and press
[ENTER].
Enter a number from 1 to 4094.This field is activated only when you select
Yes in the VLAN Tagging field.
This displays the number of a VLAN mapping profile.
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Table 71 Menu 16 VLAN Setup
FIELD DESCRIPTION
Active
ID
To enable a VLAN mapping profile, press [SPACE BAR] to select Yes and press [ENTER].
Press [SPACE BAR] to select a VLAN ID or enter one from 1 to 4094.
Incoming traffic from the WLAN is authorized and assigned a VLAN ID by the
RADIUS server before it is sent to the LAN interface of the wireless client.
Different SSID profiles can use the same or different VLAN IDs. This allows you to split wireless stations into groups using similar VLAN IDs.
Name Press [SPACE BAR] to select a name or type a name to have the ZyAIR check for specific VLAN attributes on incoming messages from the RADIUS server.
Access-accept packets sent by the RADIUS server contain VLAN related attributes. The configured Name field is checked against these attributes. If the configured Name field matches these attributes, the corresponding VLAN
ID entry is used to access the specific VLAN group. If the configured Name field does not match the VLAN related attributes sent from the RADIUS server, a wireless station is assigned the associated SSID VLAN ID. See VLAN ID in the SSID screen.
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
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C H A P T E R 20
SNMP Configuration
This chapter explains SNMP Configuration menu 22. See the web configurator chapter on
SNMP for background information.
20.1 SNMP Configuration
To configure SNMP, select option 22 from the main menu to open Menu 22 – SNMP
Configuration as shown next. The “community” for Get, Set and Trap fields is SNMP terminology for password.
Figure 124 Menu 22 SNMP Configuration
Menu 22 - SNMP Configuration
SNMP:
Get Community= public
Set Community= public
Trusted Host= 0.0.0.0
Trap:
Community= public
Destination= 0.0.0.0
Press ENTER to Confirm or ESC to Cancel:
The following table describes the SNMP configuration parameters.
Table 72 Menu 22 SNMP Configuration
FIELD DESCRIPTION
SNMP:
Get Community Type the Get Community , which is the password for the incoming Get- and
GetNext requests from the management station.
Set Community Type the Set Community , which is the password for incoming Set requests from the management station.
Trusted Host If you enter a trusted host, your ZyAIR will only respond to SNMP messages from this address. A blank (default) field means your ZyAIR will respond to all SNMP messages it receives, regardless of source.
Trap:
Community Type the trap community, which is the password sent with each trap to the SNMP manager.
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Table 72 Menu 22 SNMP Configuration
FIELD DESCRIPTION
Destination Type the IP address of the station to send your SNMP traps to.
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
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C H A P T E R 21
System Security
This chapter describes how to configure the system security on the ZyAIR.
21.1 System Security
You can configure the system password, an external RADIUS server and 802.1x in this menu.
21.1.1 System Password
Figure 125 Menu 23 System Security
Menu 23 - System Security
1. Change Password
5. Security Profile Edit
Enter Menu Selection Number:
You should change the default password. If you forget your password you have to restore the default configuration file. Refer to the section on changing the system password in the
Introducing the SMT chapter and the section on resetting the ZyAIR in the Introducing the
Web Configurator chapter.
21.1.2 Configuring Security Profiles
Enter 23 in the main menu to display Menu 23 – System Security .
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Figure 126 Menu 23 - System Security
Menu 23 - System Security
1. Change Password
5. Security Profile Edit
Enter Menu Selection Number:
From Menu 23 - System Security , enter 5 to display Menu 23.5 – Security Profile Edit as shown next.
Figure 127 Menu 23.5 Security Profile Edit
Menu 23.5 - Security Profile Edit
Index= 1
Profile Name= security01
Mode= WEP
Authentication Databases= N/A
ReAuthentication Timer (in second)= N/A
Idle Timeout (in second)= N/A
Group Key Update Timer(in second)= N/A
PSK = N/A
WEP Encryption= 64bit
WEP code= ASCII
Default Key= 1
Key1= ********
Key2= ********
Key3= ********
Key4= ********
Authen. Method= Auto
Press ENTER to Confirm or ESC to Cancel:
Press Space Bar to Toggle.
The fields in this screen vary according to the security Mode you select. See
Configuration,on page 67 for a description of the fields displayed in this screen.
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C H A P T E R 22
System Information and
Diagnosis
This chapter covers the information and diagnostic tools in SMT menus 24.1 to 24.4.
These tools include updates on system status, port status, log and trace capabilities and upgrades for the system software. This chapter describes how to use these tools in detail.
Type 24 in the main menu and press [ENTER] to open Menu 24 – System Maintenance , as shown in the following figure.
Figure 128 Menu 24 System Maintenance
Menu 24 - System Maintenance
1. System Status
2. System Information and Console Port Speed
3. Log and Trace
4. Diagnostic
5. Backup Configuration
6. Restore Configuration
7. Upload Firmware
8. Command Interpreter Mode
10. Time and Date Setting
11. Remote Management Setup
Enter Menu Selection Number:
22.1 System Status
The first selection, System Status gives you information on the status and statistics of the ports, as shown next. System Status is a tool that can be used to monitor your ZyAIR.
Specifically, it gives you information on your Ethernet and Wireless LAN status, number of packets sent and received.
To get to System Status, type 24 to go to Menu 24 – System Maintenance. From this menu, type 1 .
System Status . There are two commands in Menu 24.1 – System Maintenance –
Status . Entering 9 resets the counters; pressing [ESC] takes you back to the previous screen.
The following table describes the fields present in Menu 24.1 – System Maintenance –
Status which are read-only and meant for diagnostic purposes.
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Figure 129 Menu 24.1 System Maintenance: Status
Menu 24.1 - System Maintenance - Status 01:55:5
Sat. Jan. 01, 200
Port Status TxPkts RxPkts Cols Tx B/s Rx B/s Up Tim
Ethernet 100M/Full 5802 2001 0 303 128 1:54:
Wireless 54M 3811 74 0 64 0 1:55:
Port Ethernet Address IP Address IP Mask DHCP
Ethernet 00:13:49:2A:2A:F5 192.168.1.2 255.255.255.0 None
Wireless 00:13:49:2A:2A:F5
System up Time: 1:55:57
ZyNOS F/W Version: V3.50(AAC.1)b2 | 08/11/2005
Name: G-3000H
Press Command:
COMMANDS: 9-Reset Counters ESC-Exit
The following table describes the fields present in this menu.
Table 73 Menu 24.1 System Maintenance: Status
FIELD DESCRIPTION
Port
Status
TxPkts
RxPkts
Cols
Tx B/s
Rx B/s
Up Time
This is the port type. Port types are: Ethernet, WLAN1 and WLAN 2.
This shows the status of the remote node.
This is the number of transmitted packets to this remote node.
This is the number of received packets from this remote node.
This is the number of collisions on this connection.
This shows the transmission rate in bytes per second.
This shows the receiving rate in bytes per second.
This is the time this channel has been connected to the current remote node.
Ethernet Address
IP Address
IP Mask
DHCP
This shows the MAC address of the port.
This shows the IP address of the network device connected to the port.
This shows the subnet mask of the network device connected to the port.
This shows the DHCP setting (None or Client) for the port.
System Up Time This is the time the ZyAIR is up and running from the last reboot.
ZyNOS F/W Version Refers to the ZyNOS (ZyXEL Network Operating System) system firmware version. ZyNOS is a registered trademark of ZyXEL Communications Corporation.
Name This displays the device name.
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22.2 System Information
To get to the System Information:
1 Enter 24 to display Menu 24 – System Maintenance .
2 Enter 2 to display Menu 24.2 – System Information and Console Port Speed .
3 From this menu you have two choices as shown in the next figure:
Figure 130 Menu 24.2 System Information and Console Port Speed
Menu 24.2 - System Information and Console Port Speed
1. System Information
2. Console Port Speed
Please enter selection:
Note: The ZyAIR also has an internal console port for support personnel only. Do not open the ZyAIR as it will void your warranty.
22.2.1 System Information
Enter 1 in menu 24.2 to display the screen shown next.
Figure 131 Menu 24.2.1 System Information: Information
Menu 24.2.1 - System Maintenance - Information
Name: G-3000H
Routing: BRIDGE
ZyNOS F/W Version: V3.50(AAC.0)b1 | 05/25/2005
Country Code: 255
LAN
Ethernet Address: 00:A0:C5:F5:02:02
IP Address: 192.168.1.2
IP Mask: 255.255.255.0
DHCP: None
Press ESC or RETURN to Exit:
The following table describes the fields in this menu.
Table 74 Menu 24.2.1 System Maintenance: Information
FIELD
Name
Routing
DESCRIPTION
Displays the system name of your ZyAIR. This information can be changed in
Menu 1 – General Setup .
Refers to the routing protocol used.
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Table 74 Menu 24.2.1 System Maintenance: Information
FIELD DESCRIPTION
ZyNOS F/W Version Refers to the ZyNOS (ZyXEL Network Operating System) system firmware version. ZyNOS is a registered trademark of ZyXEL Communications
Corporation.
Country Code
LAN
Refers to the country code of the firmware.
Ethernet Address
IP Address
IP Mask
DHCP
Refers to the Ethernet MAC (Media Access Control) of your ZyAIR.
This is the IP address of the ZyAIR in dotted decimal notation.
This shows the subnet mask of the ZyAIR.
This field shows the DHCP setting of the ZyAIR.
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
22.2.2 Console Port Speed
You can set up different port speeds for the console port through Menu 24.2.2 – System
Maintenance – Console Port Speed . Your ZyAIR supports 9600 (default), 19200, 38400,
57600 and 115200 bps console port speeds. Press [ SPACE BAR ] and then [ENTER] to select the desired speed in menu 24.2.2, as shown in the following figure.
Figure 132 Menu 24.2.2 System Maintenance: Change Console Port Speed
Menu 24.2.2 – System Maintenance – Change Console Port Speed
Console Port Speed: 9600
Press ENTER to Confirm or ESC to Cancel:
After you changed the console port speed on your ZyAIR, you must also make the same change to the console port speed parameter of your communication software.
22.3 Log and Trace
Your ZyAIR provides the error logs and trace records that are stored locally.
22.3.1 Viewing Error Log
The first place you should look for clues when something goes wrong is the error log. Follow the procedures to view the local error/trace log:
1 Type 24 in the main menu to display Menu 24 – System Maintenance .
2 From menu 24, type 3 to display Menu 24.3 – System Maintenance – Log and Trace .
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Figure 133 Menu 24.3 System Maintenance: Log and Trace
Menu 24.3 - System Maintenance - Log and Trace
1. View Error Log
Please enter selection:
3 Enter 1 from Menu 24.3 – System Maintenance – Log and Trace and press [ENTER] twice to display the error log in the system.
After the ZyAIR finishes displaying the error log, you will have the option to clear it. Samples of typical error and information messages are presented in the next figure.
Figure 134 Sample Error and Information Messages
55 Sat Jan 1 00:00:00 2000 PP05 ERROR Wireless LAN init fail, code=-1
56 Sat Jan 1 00:00:01 2000 PP07 INFO LAN promiscuous mode <1>
57 Sat Jan 1 00:00:01 2000 PINI INFO Last errorlog repeat 1 Times
58 Sat Jan 1 00:00:01 2000 PINI INFO main: init completed
59 Sat Jan 1 00:00:02 2000 PP05 -WARN SNMP TRAP 3: link up
60 Sat Jan 1 00:00:30 2000 PSSV -WARN SNMP TRAP 0: cold start
61 Sat Jan 1 00:01:38 2000 PINI INFO SMT Session Begin
62 Sat Jan 1 00:06:44 2000 PINI INFO SMT Session End
63 Sat Jan 1 00:11:13 2000 PINI INFO SMT Session Begin
Clear Error Log (y/n):
22.4 Diagnostic
The diagnostic facility allows you to test the different aspects of your ZyAIR to determine if it is working properly. Menu 24.4 allows you to choose among various types of diagnostic tests to evaluate your system, as shown in the following figure.
Figure 135 Menu 24.4 System Maintenance: Diagnostic
Menu 24.4 - System Maintenance - Diagnostic
TCP/IP
1. Ping Host
2. DHCP Release
3. DHCP Renewal
System
11. Reboot System
Enter Menu Selection Number:
Host IP Address= N/A
Follow the procedure next to get to display this menu:
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1 From the main menu, type 24 to open Menu 24 – System Maintenance .
2 From this menu, type 4. Diagnostic to open Menu 24.4 – System Maintenance –
Diagnostic .
The following table describes the diagnostic tests available in menu 24.4 for your ZyAIR and the connections.
Table 75 Menu 24.4 System Maintenance Menu: Diagnostic
FIELD
Ping Host
DHCP Release
DHCP Renewal
Reboot System
Host IP Address
DESCRIPTION
Ping the host to see if the links and TCP/IP protocol on both systems are working.
Release the IP address assigned by the DHCP server.
Get a new IP address from the DHCP server.
Reboot the ZyAIR.
If you typed 1 to Ping Host, now type the address of the computer you want to ping.
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C H A P T E R 23
Firmware and Configuration File
Maintenance
This chapter tells you how to backup and restore your configuration file as well as upload new firmware and configuration files using the SMT screens.
23.1 Filename Conventions
The configuration file (often called the romfile or rom-0) contains the factory default settings in the menus such as password and TCP/IP Setup, etc. It arrives from ZyXEL with a rom filename extension. Once you have customized the ZyAIR's settings, they can be saved back to your computer under a filename of your choosing.
ZyNOS (ZyXEL Network Operating System sometimes referred to as the “ras” file) is the system firmware and has a “bin” filename extension. With many FTP and TFTP clients, the filenames are similar to those seen next. ftp> put firmware.bin ras
This is a sample FTP session showing the transfer of the computer file " firmware.bin" to the
ZyAIR.
ftp> get rom-0 config.cfg
This is a sample FTP session saving the current configuration to the computer file config.cfg.
If your [T]FTP client does not allow you to have a destination filename different than the source, you will need to rename them as the ZyAIR only recognizes “rom-0” and “ras”. Be sure you keep unaltered copies of both files for later use.
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The following table is a summary. Please note that the internal filename refers to the filename on the ZyAIR and the external filename refers to the filename not on the ZyAIR, that is, on your computer, local network or FTP site and so the name (but not the extension) will vary.
After uploading new firmware see the ZyNOS F/W Version field in Menu 24.2.1 – System
Maintenance – Information to confirm that you have uploaded the correct firmware version.
Table 76 Filename Conventions
FILE TYPE
INTERNAL
NAME
Configuration File Rom-0
EXTERNAL
NAME
*.rom
Firmware Ras *.bin
DESCRIPTION
This is the configuration filename on the ZyAIR.
Uploading the rom-0 file replaces the entire ROM file system, including your ZyAIR configurations, system-related data (including the default password), the error log and the trace log.
This is the generic name for the ZyNOS firmware on the ZyAIR.
23.2 Backup Configuration
Option 5 from Menu 24 – System Maintenance allows you to backup the current ZyAIR configuration to your computer. Backup is highly recommended once your ZyAIR is functioning properly. FTP is the preferred method, although TFTP can also be used.
Please note that the terms “download” and “upload” are relative to the computer. Download means to transfer from the ZyAIR to the computer, while upload means from your computer to the ZyAIR.
23.2.1 Backup Configuration Using FTP
Enter 5 in Menu 24 – System Maintenance to get the following screen.
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Figure 136 Menu 24.5 Backup Configuration
Menu 24.5 – Backup Configuration
To transfer the configuration file to your workstation, follow the procedure below:
1. Launch the FTP client on your workstation.
2. Type "open" and the IP address of your router. Then type "root" and
SMT password as requested.
3. Locate the ‘rom-0’ file.
4. Type ‘get rom-0’ to back up the current router configuration to your workstation.
For details on FTP commands, please consult the documentation of your FTP client program. For details on backup using TFTP (note that you must remain in the menu to back up using TFTP), please see your router manual.
Press ENTER to Exit:
23.2.2 Using the FTP command from the DOS Prompt
1 Launch the FTP client on your computer.
2 Enter “open” and the IP address of your ZyAIR.
3 Press [ENTER] when prompted for a username.
4 Enter “root” and your SMT password as requested. The default is 1234.
5 Enter “bin” to set transfer mode to binary.
6 Use “get” to transfer files from the ZyAIR to the computer, for example, “get rom-0 config.rom” transfers the configuration file on the ZyAIR to your computer and renames it “config.rom”. See earlier in this chapter for more information on filename conventions.
7 Enter “quit” to exit the FTP prompt.
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Figure 137 FTP Session Example
331 Enter PASS command
Password:
230 Logged in ftp> bin
200 Type I OK ftp> get rom-0 zyxel.rom
200 Port command okay
150 Opening data connection for STOR ras
226 File received OK ftp: 327680 bytes sent in 1.10Seconds
297.89Kbytes/sec.
ftp> quit
The following table describes some of the commands that you may see in third party FTP clients.
Table 77 General Commands for Third Party FTP Clients
COMMAND DESCRIPTION
Host Address
Login Type
Enter the address of the host server.
Anonymous.
This is when a user I.D. and password is automatically supplied to the server for anonymous access. Anonymous logins will work only if your ISP or service administrator has enabled this option.
Normal.
The server requires a unique User ID and Password to login.
Transfer Type
Initial Remote
Directory
Transfer files in either ASCII (plain text format) or in binary mode.
Specify the default remote directory (path).
Initial Local Directory Specify the default local directory (path).
23.2.3 Backup Configuration Using TFTP
The ZyAIR supports the up/downloading of the firmware and the configuration file using
TFTP (Trivial File Transfer Protocol) over LAN. Although TFTP should work over WAN as well, it is not recommended.
To use TFTP, your computer must have both telnet and TFTP clients. To backup the configuration file, follow the procedure shown next:
1 Use telnet from your computer to connect to the ZyAIR and log in. Because TFTP does not have any security checks, the ZyAIR records the IP address of the telnet client and accepts TFTP requests only from this address.
2 Put the SMT in command interpreter (CI) mode by entering 8 in Menu 24 – System
Maintenance .
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3 Enter command “sys stdio 0” to disable the SMT timeout, so the TFTP transfer will not be interrupted. Enter command “sys stdio 5” to restore the five-minute SMT timeout
(default) when the file transfer is complete.
4 Launch the TFTP client on your computer and connect to the ZyAIR. Set the transfer mode to binary before starting data transfer.
5 Use the TFTP client (see the example below) to transfer files between the ZyAIR and the computer. The file name for the configuration file is rom-0 (rom-zero, not capital o).
Note that the telnet connection must be active and the SMT in CI mode before and during the
TFTP transfer. For details on TFTP commands (see following example), please consult the documentation of your TFTP client program. For UNIX, use “get” to transfer from the ZyAIR to the computer and “binary” to set binary transfer mode.
23.2.4 Example: TFTP Command
The following is an example TFTP command:
TFTP [-i] host get rom-0 config.rom
where “i” specifies binary image transfer mode (use this mode when transferring binary files),
“host” is the ZyAIR IP address, “get” transfers the file source on the ZyAIR (rom-0 name of the configuration file on the ZyAIR) to the file destination on the computer and renames it config.rom.
The following table describes some of the fields that you may see in third party TFTP clients.
Table 78 General Commands for Third Party TFTP Clients
COMMAND
Host
Send/Fetch
Local File
Remote File
Binary
Abort
DESCRIPTION
Enter the IP address of the ZyAIR. 192.168.1.2 is the ZyAIR’s default IP address when shipped.
Use “Send” to upload the file to the ZyAIR and “Fetch” to back up the file on your computer.
Enter the path and name of the firmware file (*.bin extension) or configuration file (*.rom extension) on your computer.
This is the filename on the ZyAIR. The filename for the firmware is “ras” and for the configuration file, is “rom-0”.
Transfer the file in binary mode.
Stop transfer of the file.
23.2.5 Backup Via Console Port
Back up configuration via console port by following the HyperTerminal procedure shown next. Procedures using other serial communications programs should be similar.
1 Display menu 24.5 and enter “y” at the following screen.
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Figure 138 System Maintenance: Backup Configuration
Ready to backup Configuration via Xmodem.
Do you want to continue (y/n):
2 The following screen indicates that the Xmodem download has started.
Figure 139 System Maintenance: Starting Xmodem Download Screen
You can enter ctrl-x to terminate operation any time.
Starting XMODEM download...
3 Run the HyperTerminal program by clicking Transfer , then Receive File as shown in the following screen.
Figure 140 Backup Configuration Example
Type a location
for storing the configuration file or click Browse to look for one.
Choose the
Xmodem protocol.
4 After a successful backup you will see the following screen. Press any key to return to the
SMT menu.
Figure 141 Successful Backup Confirmation Screen
Then click Receive .
** Backup Configuration completed. OK.
### Hit any key to continue.###
23.3 Restore Configuration
Menu 24.6 –- System Maintenance – Restore Configuration allows you to restore the configuration via FTP or TFTP to your ZyAIR. The preferred method is FTP. Note that this function erases the current configuration before restoring the previous backup configuration; please do not attempt to restore unless you have a backup configuration stored on disk. To restore configuration using FTP or TFTP is the same as uploading the configuration file, please refer to the following sections on FTP and TFTP file transfer for more details. The
ZyAIR restarts automatically after the file transfer is complete.
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23.3.1 Restore Using FTP
For details about backup using (T)FTP please refer to earlier sections on FTP and TFTP file upload in this chapter.
Figure 142 Menu 24.6 Restore Configuration
Menu 24.6 – Restore Configuration
To transfer the firmware and the configuration file, follow the procedure below:
1. Launch the FTP client on your workstation.
2. Type "open" and the IP address of your router. Then type "root" and
SMT password as requested.
3. Type “put backupfilename rom-0” where backupfilename is the name of
your backup configuration file on your workstation and rom-spt is the
Remote file name on the router. This restores the configuration to your
router.
4. The system reboots automatically after a successful file transfer.
For details on FTP commands, please consult the documentation of your FTP client program. For details on restoring using TFTP (note that you must remain in the menu to back up using TFTP), please see your router manual.
Press ENTER to Exit:
23.4 Uploading Firmware and Configuration Files
Menu 24.7 – System Maintenance – Upload Firmware allows you to upgrade the firmware and the configuration file.
Note: WARNING! PLEASE WAIT A FEW MINUTES FOR THE ZYAIR TO RESTART
AFTER FIRMWARE OR CONFIGURATION FILE UPLOAD. INTERRUPTING THE
UPLOAD PROCESS MAY PERMANENTLY DAMAGE YOUR ZYAIR.
Figure 143 Menu 24.7 System Maintenance: Upload Firmware
Menu 24.7 - System Maintenance - Upload Firmware
1. Upload System Firmware
2. Upload System Configuration File
Enter Menu Selection Number:
The configuration data, system-related data, the error log and the trace log are all stored in the configuration file. Please be aware that uploading the configuration file replaces everything contained within.
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23.4.1 Firmware Upload
FTP is the preferred method for uploading the firmware and configuration. To use this feature, your computer must have an FTP client.
When you telnet into the ZyAIR, you will see the following screens for uploading firmware and the configuration file using FTP.
Figure 144 Menu 24.7.1 System Maintenance: Upload System Firmware
Menu 24.7.1 - System Maintenance - Upload System Firmware
To upload the system firmware, follow the procedure below:
1. Launch the FTP client on your workstation.
2. Type "open" and the IP address of your system. Then type "root" and
SMT password as requested.
3. Type "put firmwarefilename ras" where "firmwarefilename" is the name of your firmware upgrade file on your workstation and "ras" is the remote file name on the system.
4. The system reboots automatically after a successful firmware upload.
For details on FTP commands, please consult the documentation of your FTP client program. For details on uploading system firmware using TFTP (note that you must remain on this menu to upload system firmware using TFTP), please see your manual.
Press ENTER to Exit:
23.4.2 Configuration File Upload
You see the following screen when you telnet into menu 24.7.2.
Figure 145 Menu 24.7.2 System Maintenance: Upload System Configuration File
Menu 24.7.2 - System Maintenance - Upload System Configuration File
To upload the system configuration file, follow the procedure below:
1. Launch the FTP client on your workstation.
2. Type "open" and the IP address of your system. Then type "root" and SMT password as requested.
3. Type "put configurationfilename rom-0" where "configurationfilename" is the name of your system configuration file on your workstation, which will be transferred to the
"rom-0" file on the system.
4. The system reboots automatically after the upload system configuration file process is complete.
For details on FTP commands, please consult the documentation of your FTP client program. For details on uploading system firmware using TFTP (note that you must remain on this menu to upload system firmware using TFTP), please see your manual.
Press ENTER to Exit:
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To transfer the firmware and the configuration file, follow these examples:
23.4.3 Using the FTP command from the DOS Prompt Example
1 Launch the FTP client on your computer.
2 Enter “open” and the IP address of your ZyAIR.
3 Press [ENTER] when prompted for a username.
4 Enter “root” and your SMT password as requested. The default is 1234.
5 Enter “bin” to set transfer mode to binary.
6 Use “put” to transfer files from the computer to the ZyAIR, e.g., put firmware.bin ras transfers the firmware on your computer (firmware.bin) to the ZyAIR and renames it
“ras”. Similarly “put config.rom rom-0” transfers the configuration file on your computer
(config.rom) to the ZyAIR and renames it “rom-0”. Likewise “get rom-0 config.rom” transfers the configuration file on the ZyAIR to your computer and renames it
“config.rom.” See earlier in this chapter for more information on filename conventions.
7 Enter “quit” to exit the FTP prompt.
Figure 146 FTP Session Example
331 Enter PASS command
Password:
230 Logged in ftp> bin
200 Type I OK ftp> put firmware.bin ras
200 Port command okay
150 Opening data connection for STOR ras
226 File received OK ftp: 327680 bytes sent in 1.10Seconds
297.89Kbytes/sec.
ftp> quit
More commands that you may find in third party FTP clients are listed earlier in this chapter.
23.4.4 TFTP File Upload
The ZyAIR also supports the up/downloading of the firmware and the configuration file using
TFTP (Trivial File Transfer Protocol) over LAN. Although TFTP should work over WAN as well, it is not recommended.
To use TFTP, your computer must have both telnet and TFTP clients. To transfer the firmware and the configuration file, follow the procedure shown next:
1 Use telnet from your computer to connect to the ZyAIR and log in. Because TFTP does not have any security checks, the ZyAIR records the IP address of the telnet client and accepts TFTP requests only from this address.
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2 Put the SMT in command interpreter (CI) mode by entering 8 in Menu 24 – System
Maintenance .
3 Enter the command “sys stdio 0” to disable the SMT timeout, so the TFTP transfer will not be interrupted. Enter command “sys stdio 5” to restore the five-minute SMT timeout
(default) when the file transfer is complete.
4 Launch the TFTP client on your computer and connect to the ZyAIR. Set the transfer mode to binary before starting data transfer.
5 Use the TFTP client (see the example below) to transfer files between the ZyAIR and the computer. The file name for the firmware is “ras ” and the configuration file is “rom-0”
(rom-zero, not capital o).
Note that the telnet connection must be active and the SMT in CI mode before and during the
TFTP transfer. For details on TFTP commands (see following example), please consult the documentation of your TFTP client program. For UNIX, use “get” to transfer from the ZyAIR to the computer, “put” the other way around, and “binary” to set binary transfer mode.
23.4.5 Example: TFTP Command
The following is an example TFTP command:
TFTP [-i] host put firmware.bin ras where “i” specifies binary image transfer mode (use this mode when transferring binary files),
“host” is the ZyAIR’s IP address, “put” transfers the file source on the computer (firmware.bin
– name of the firmware on the computer) to the file destination on the remote host (ras - name of the firmware on the ZyAIR).
Commands that you may see in third party TFTP clients are listed earlier in this chapter.
23.4.6 Uploading Via Console Port
FTP or TFTP are the preferred methods for uploading firmware to your ZyAIR. However, in the event of your network being down, uploading files is only possible with a direct connection to your ZyAIR via the console port. Uploading files via the console port under normal conditions is not recommended since FTP or TFTP is faster. Any serial communications program should work fine; however, you must use the Xmodem protocol to perform the download/upload.
23.4.7 Uploading Firmware File Via Console Port
Select 1 from Menu 24.7 – System Maintenance – Upload Firmware to display Menu
24.7.1 – System Maintenance – Upload System Firmware , then follow the instructions as shown in the following screen.
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Figure 147 Menu 24.7.1 as seen using the Console Port
Menu 24.7.1 - System Maintenance - Upload System Firmware
To upload system firmware:
1. Enter "y" at the prompt below to go into debug mode.
2. Enter "atur" after "Enter Debug Mode" message.
3. Wait for "Starting XMODEM upload" message before activating
Xmodem upload on your terminal.
4. After successful firmware upload, enter "atgo" to restart the
router.
Warning: Proceeding with the upload will erase the current system
firmware.
Do You Wish To Proceed:(Y/N)
After the "Starting Xmodem upload" message appears, activate the Xmodem protocol on your computer. Follow the procedure as shown previously for the HyperTerminal program. The procedure for other serial communications programs should be similar.
23.4.8 Example Xmodem Firmware Upload Using HyperTerminal
Click Transfer , then Send File to display the following screen.
Figure 148 Example Xmodem Upload
Type the firmware file’s location, or click Browse to look for it.
Choose the Xmodem
protocol.
Then click Send .
After the firmware upload process has completed, the ZyAIR will automatically restart.
23.4.9 Uploading Configuration File Via Console Port
1 Select 2 from Menu 24.7 – System Maintenance – Upload Firmware to display Menu
24.7.2 – System Maintenance – Upload System Configuration File . Follow the instructions as shown in the next screen.
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Figure 149 Menu 24.7.2 as seen using the Console Port
Menu 24.7.2 - System Maintenance - Upload System Configuration File
To upload system configuration file:
1. Enter "y" at the prompt below to go into debug mode.
2. Enter "atlc" after "Enter Debug Mode" message.
3. Wait for "Starting XMODEM upload" message before activating
Xmodem upload on your terminal.
4. After successful firmware upload, enter "atgo" to restart the
system.
Warning:
1. Proceeding with the upload will erase the current
configuration file.
2. The system’s console port speed (Menu 24.2.2) may change
when it is restarted; please adjust your terminal's speed
accordingly. The password may change (menu 23), also.
3. When uploading the DEFAULT configuration file, the console
port speed will be reset to 9600 bps and the password to
"1234".
Do You Wish To Proceed:(Y/N)
2 After the "Starting Xmodem upload" message appears, activate the Xmodem protocol on your computer. Follow the procedure as shown previously for the HyperTerminal program. The procedure for other serial communications programs should be similar.
3 Enter “atgo” to restart the ZyAIR.
23.4.10 Example Xmodem Configuration Upload Using HyperTerminal
Click Transfer , then Send File to display the following screen.
Figure 150 Example Xmodem Upload
Type the configuration
file’s location, or click Browse to search for it.
Choose the Xmodem
protocol.
Then click Send .
After the configuration upload process has completed, restart the ZyAIR by entering “atgo”
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C H A P T E R 24
System Maintenance and
Information
This chapter leads you through SMT menus 24.8 and 24.10.
24.1 Command Interpreter Mode
The Command Interpreter (CI) is a part of the main system firmware. The CI provides much of the same functionality as the SMT, while adding some low-level setup and diagnostic functions. Enter the CI from the SMT by selecting menu 24.8. See the included disk or the zyxel.com web site for more detailed information on CI commands. Enter 8 from Menu 24 –
System Maintenance . A list of valid commands can be found by typing help or ?
at the command prompt. Type “exit” to return to the SMT main menu when finished.
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Figure 151 Menu 24 System Maintenance
Menu 24 - System Maintenance
1. System Status
2. System Information and Console Port Speed
3. Log and Trace
4. Diagnostic
5. Backup Configuration
6. Restore Configuration
7. Upload Firmware
8. Command Interpreter Mode
10. Time and Date Setting
11. Remote Management Setup
Enter Menu Selection Number:
Figure 152 Valid CI Commands
Copyright (c) 1994 - 2005 ZyXEL Communications Corp.
G-3000H> ?
Valid commands are: sys exit ether wlan ip bridge certificates 8021x wcfg
G-3000H>
24.1.1 CNM
Vantage CNM (Centralized Network Management) is a browser-based, global management solution that allows an administrator to easily configure, manage, monitor and troubleshoot
ZyXEL devices located worldwide. See the Vantage CNM User’s Guide for details.
If you allow your ZyXEL device to be managed by Vantage CNM, then you should not configure it without notifying the Vantage CNM administrator.
24.1.2 Configuring Vantage CNM
Vantage CNM is disabled on the device by default. You can configure Vantage CNM on your
ZyXEL device by using the following commands.
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Figure 153 CNM CL
G-3000H>cnm active sgid managerIp debug reset simulate encrykey encrymode
G-3000H>
The following table describes the commands in this screen. All commands begin with “cnm” so for example, type “cnm active 1” to enable Vantage CNM on your device.
Table 79 CNM Commands
COMMAND SUB COMMAND active sgid
DESCRIPTION
<0:Disable
1:Enable CNM via WAN
2:Enable CNM via WAN or LAN>
0
1
2
Last Register Time: 0-0-0
0:0:0
This displays the ZyXEL device connection status with
Vantage CNM and displays the last date and time that the
ZyXEL device registered with the Vantage CNM server.
If Vantage CNM is disabled on the ZyXEL device, active
0 is displayed.
If Vantage CNM is enabled on the ZyXEL device using a
WAN connection, active 1 is displayed.
If Vantage CNM is enabled on the ZyXEL device using a
WAN or LAN connection, active 2 is displayed.
Use this command to disable Vantage CNM on your
ZyXEL device.
Use this command to enable Vantage CNM on your
ZyXEL device using a WAN connection.
Use this command to enable Vantage CNM on your
ZyXEL device using a WAN or LAN connection.
For example if Last Register Time 2004-11-20 10:34:23 is displayed then the last date the device registered with
Vantage CNM was the 20th November 2003 at 10:34 PM.
The last register time displays the last date (year-monthdate) and time (hours : minutes : seconds) that the ZyXEL device registered with Vantage CNM. It displays all zeroes if it has not yet registered with the Vantage CNM server.
This command displays your ZyXEL device’s unique ID in
Vantage CNM.
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Table 79 CNM Commands
COMMAND managerIp
SUB COMMAND debug
2
3
[addr]
0
1
<0:Disable
1:Vantage
2:Agent tester
3:Server> reset encrykey
[string]
DESCRIPTION
This command displays the public IP address of the
Vantage CNM server.
If the Vantage server is on the same subnet as the ZyXEL device, enter the private or public IP address of the
Vantage CNM server.
If the Vantage CNM server is on a different subnet to the
ZyXEL device, enter the public IP address of the Vantage
CNM server.
If the Vantage CNM server is behind a NAT router, enter the WAN Public IP address of the NAT router here and configure the NAT router to forward UDP port 1864 traffic to the Vantage CNM server.
If the Vantage CNM server is behind a firewall, you may have to create a rule on the firewall to allow UDP port
1864 traffic through to the Vantage CNM server (most
(new) ZyXEL firewalls automatically allow this).
Use this command to set the IP address of the Vantage
CNM server.
This command displays the output of Vantage CNM debug messages.
Type this command to not display Vantage CNM debug messages.
Type this command to display Vantage CNM debug messages on the console after the ZyXEL device registers with the Vantage CNM server.
Type this command to display Vantage CNM debug messages on the console after the ZyXEL device registers with the Vantage CNM server.
Type this command to display Vantage CNM debug messages on the console after the ZyXEL device registers with the Vantage CNM server.
Have the ZyXEL device send register request messages to the Vantage CNM server.
This displays the encryption key, which is used to encrypt and decrypt messages between Vantage CNM and the device.
Use this command to specify the encryption key.
Type eight alphanumeric characters when you choose
DES encryption algorithm.
Type 24 alphanumeric characters when you choose
3DES encryption algorithm.
The ZyXEL device must have the same encryption key as the Vantage CNM server.
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Table 79 CNM Commands
COMMAND SUB COMMAND encrymode
<0:NONE
1:DES
2:3DES> keepalive version
0
[seconds]
DESCRIPTION
This command is used to encrypt communications between the ZyXEL device and the Vantage CNM server.
Use this command to set the encryption mode.
Type 0 to have no encryption, type 1 to have the ZyXEL device use DES encryption or type 2 to have the ZyXEL device use 3DES encryption.
The ZyXEL device must use the same encryption mode as the Vantage CNM server.
Keepalive messages are sent to the Vantage CNM server by the ZyXEL device. They show the connection status between the ZyXEL device and the Vantage CNM server.
This command displays the time interval in seconds between the keepalive messages that the ZyXEL device sends to the Vantage CNM server.
Use this command to disable keepalive message sending.
To set a time interval type the cnm keepalive command followed by a number from 10 to 655.
This displays the Vantage CNM version.
24.1.3 Configuration Example
This is an example allowing Vantage CNM server (on the same subnet as your ZyXEL device) with an IP address of 10.1.1.1, to manage your device. The device and Vantage CNM communicate using DES encryption and a password of “12345678”.
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Figure 154 CNM Configuration Example
G-3000H> cnm active sgid managerIp debug reset encrykey encrymode keepalive version
G-3000H>
G-3000H> cnm active cnm active 0 <0:Disable 1:Enable CNM via WAN 2:Enable CNM via
WAN or LAN>
Last Register Time: 0-0-0 0:0:0
G-3000H> cnm active 1 cnm active 1
G-3000H>
G-3000H> cnm managerIp managerIp 0.0.0.0
G-3000H> cnm managerIp 10.1.1.1
managerIp 10.1.1.1
G-3000H>
G-3000H> cnm debug cnm debug 0 <0:Disable 1:Vantage 2:Agent tester 3:Server>
G-3000H>
G-3000H> cnm sgid sgId 0X0000000000000000
G-3000H> cnm sgid 0a1b2c3d4e5f6a sgId 0X000a1b2c3d4e5f6a
G-3000H>
G-3000H> cnm encrymode cnm encrymode 0 <0:NONE 1:DES 2:3DES>
G-3000H> cnm encrymode 1 cnm encrymode 1
G-3000H>
G-3000H> cnm encrykey 12345678 encrykey 12345678
G-3000H> cnm keepalive 20
Send SGMP keepalive timer change event
G-3000H> sgmpd: Change keepalive timer to 20 seconds
G-3000H>
G-3000H> cnm version cnm version: 2.0.2-b4
G-3000H>
24.2 Time and Date Setting
The ZyAIR keeps track of the time and date. There is also a software mechanism to set the
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ZyAIR. Menu 24.10 allows you to update the time and date settings of your ZyAIR.
The real time is then displayed in the ZyAIR error logs.
1 Select menu 24 in the main menu to open Menu 24 – System Maintenance .
2 Then enter 10 to go to Menu 24.10 – System Maintenance – Time and Date Setting to update the time and date settings of your ZyAIR as shown in the following screen.
Figure 155 Menu 24.10 System Maintenance: Time and Date Setting
Menu 24.10 - System Maintenance - Time and Date Setting
Time Protocol= NTP (RFC-1305)
Time Server Address= 128.105.39.21
Current Time: 05 : 47 : 19
New Time (hh:mm:ss): 05 : 47 : 17
Current Date: 2000 - 01 – 01
New Date (yyyy-mm-dd): 2000 - 01 – 01
Time Zone= GMT
Daylight Saving= No
Start Date (mm-dd): 01 – 01
End Date (mm-dd): 01 – 01
Press ENTER to Confirm or ESC to Cancel:
The following table describes the fields in this menu.
Table 80 System Maintenance: Time and Date Setting
FIELD DESCRIPTION
Time Protocol Enter the time service protocol that your time server sends when you turn on the ZyAIR. Not all time servers support all protocols, so you may have to check with your ISP/network administrator or use trial and error to find a protocol that works. The main differences between them are the format.
Daytime (RFC 867) format is day/month/year/time zone of the server.
Time (RFC-868) format displays a 4-byte integer giving the total number of seconds since 1970/1/1 at 0:0:0.
NTP (RFC-1305) is similar to Time (RFC-868) .
None . The default, enter the time manually.
Time Server Address Enter the IP address or domain name of your time server. Check with your ISP/ network administrator if you are unsure of this information.
Current Time
New Time
Current Date
New Date
Time Zone
This field displays an updated time only when you reenter this menu.
Enter the new time in hour, minute and second format.
This field displays an updated date only when you re-enter this menu.
Enter the new date in year, month and day format.
Press [SPACE BAR] and then [ENTER] to set the time difference between your time zone and Greenwich Mean Time (GMT).
Daylight Saving
Start Date
If you use daylight savings time, then choose Yes .
If using daylight savings time, enter the month and day that it starts on.
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Table 80 System Maintenance: Time and Date Setting
FIELD DESCRIPTION
End Date If using daylight savings time, enter the month and day that it ends on
Once you have filled in this menu, press [ENTER] at the message “Press ENTER to Confirm or ESC to
Cancel“ to save your configuration, or press [ESC] to cancel.
24.2.1 Resetting the Time
The ZyAIR resets the time in three instances:
1 On leaving menu 24.10 after making changes.
2 When the ZyAIR starts up, if there is a timeserver configured in menu 24.10.
3 24-hour intervals after starting.
24.3 Remote Management Setup
24.3.1 Telnet
You can configure your ZyAIR for remote Telnet access as shown next.
Figure 156 Telnet Configuration on a TCP/IP Network
24.3.2 FTP
You can upload and download ZyAIR firmware and configuration files using FTP. To use this feature, your computer must have an FTP client.
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24.3.3 Web
You can use the ZyAIR’s embedded web configurator for configuration and file management.
See the online help for details.
24.3.4 Remote Management Setup
Remote management setup is for managing Telnet, FTP and Web services. You can customize the service port, access interface and the secured client IP address to enhance security and flexibility.
You may manage your ZyAIR from a remote location via:
the Internet ( WAN only ), the LAN only , All (LAN and WAN) or Disable (neither).
Table 81 Remote Management Port Control
WAN only (Internet)
LAN only
ALL (LAN and WAN)
Disable (Neither)
Note: If you enable remote management of a service, but have applied a filter to block the service, then you will not be able to remotely manage the service.
Enter 11, from menu 24, to display Menu 24.11 - Remote Management Control (shown next)
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Figure 157 Menu 24.11 Remote Management Control
Menu 24.11 - Remote Management Control
TELNET Server: Port = 23 Access = ALL
Secure Client IP = 0.0.0.0
FTP Server: Port = 21 Access = ALL
Secure Client IP = 0.0.0.0
HTTPS Server: Certificate = auto_generated_self_signed_cert
Authenticate Client Certificates = No
Port = 443 Access = ALL
Secure Client IP = 0.0.0.0
HTTP Server: Port = 80 Access = ALL
Secure Client IP = 0.0.0.0
SNMP Service: Port = 161 Access = ALL
Secure Client IP = 0.0.0.0
Press ENTER to Confirm or ESC to Cancel:
The following table describes the fields in this menu.
Table 82 Menu 24.11 Remote Management Control
FIELD DESCRIPTION
TELNET Server:
FTP Server:
HTTPS Server:
HTTP Server:
SNMP Service:
Each of these read-only labels denotes a server or service that you may use to remotely manage the ZyAIR.
See
” for information on HTTPS.
Port
Access
This field shows the port number for the remote management service. You may change the port number for a service if needed, but you must use the same port number to use that service for remote management.
Select the access interface (if any) by pressing the [SPACE BAR]. Choices are:
LAN only , WAN only , All or Disable . The default is LAN only .
Secured Client IP
Certificate
The default 0.0.0.0 allows any client to use this service to remotely manage the
ZyAIR. Enter an IP address to restrict access to a client with a matching IP address.
This field displays the name used to identify this certificate. The ZyAIR has an auto_generated_self_signed_cert by factory default. The factory default certificate is common to all ZyAIR’s that use certificates. You can replace the certificate when you log into the ZyAIR, see the section Introducing the Web
Configurator or you can go to the Certificates configuration screen, see the
Certificates chapter.
Authenticate Client
Certificates
Select Yes by pressing the [SPACE BAR]. The internal RADIUS server uses one of the certificates listed in the My Certificates screen to authenticate each wireless client. The exact certificate used, depends on the certificate information configured on the wireless client.
Once you have filled in this menu, press [ENTER] at the message "Press ENTER to Confirm or ESC to
Cancel" to save your configuration, or press [ESC] to cancel.
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24.3.5 Remote Management Limitations
Remote management over LAN or WAN will not work when:
1 A filter in menu 3.1 (LAN) or in menu 11.5 (WAN) is applied to block a Telnet, FTP or
Web service.
2 You have disabled that service in menu 24.11.
3 The IP address in the Secured Client IP field (menu 24.11) does not match the client IP address. If it does not match, the ZyAIR will disconnect the session immediately.
4 There is already another remote management session of the same type (Telnet, FTP or
Web) running. You may only have one remote management session of the same type running at one time.
5 There is a web remote management session running with a Telnet session. A Telnet session will be disconnected if you begin a web session; it will not begin if there already is a web session.
24.4 Remote Management and NAT
When NAT is enabled:
• Use the ZyAIR’s WAN IP address when configuring from the WAN.
• Use the ZyAIR’s LAN IP address when configuring from the LAN.
24.5 System Timeout
There is a system timeout of five minutes (300 seconds) for Telnet/web/FTP connections. Your
ZyAIR will automatically log you out if you do nothing in this timeout period, except when it is continuously updating the status in menu 24.1
or when sys stdio has been changed on the command line.
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Appendix A
Troubleshooting
This appendix covers potential problems and possible remedies. After each problem description, some instructions are provided to help you to diagnose and to solve the problem.
Problems Starting Up the ZyAIR
Table 83 Troubleshooting the Start-Up of Your ZyAIR
PROBLEM CORRECTIVE ACTION
None of the LEDs turn on when I plug in the power adaptor.
Make sure you are using the supplied power adaptor and that it is plugged in to an appropriate power source. Check that the power source is turned on.
If the problem persists, you may have a hardware problem. In this case, you should contact your local vendor.
The ZyAIR reboots automatically sometimes.
The supplied power to the ZyAIR is too low. Check that the ZyAIR is receiving enough power.
Make sure the power source is working properly.
Problems with the Ethernet Interface
Table 84 Troubleshooting the Ethernet Interface
PROBLEM
Cannot access the
ZyAIR from the
LAN.
I cannot ping any computer on the
LAN.
CORRECTIVE ACTION
If the ETHN LED on the front panel is off, check the Ethernet cable connection between your ZyAIR and the Ethernet device connected to the ETHERNET port.
Check for faulty Ethernet cables.
Make sure your computer’s Ethernet adapter is installed and working properly.
Check the IP address of the Ethernet device. Verify that the IP address and the subnet mask of the ZyAIR, the Ethernet device and your computer are on the same subnet.
If the ETHN LED on the front panel is off, check the Ethernet cable connections between your ZyAIR and the Ethernet device.
Check the Ethernet cable connections between the Ethernet device and the LAN computers.
Check for faulty Ethernet cables.
Make sure the LAN computer’s Ethernet adapter is installed and working properly.
Verify that the IP address and the subnet mask of the ZyAIR, the Ethernet device and the LAN computers are on the same subnet.
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Problems with the Password
Table 85 Troubleshooting the Password
PROBLEM
I cannot access the
ZyAIR.
CORRECTIVE ACTION
The Password and Username fields are case-sensitive. Make sure that you enter the correct password and username using the proper casing.
Use the RESET button on the top panel of the ZyAIR to restore the factory default configuration file (hold this button in for about 10 seconds or until the link LED turns red). This will restore all of the factory defaults including the password.
Problems with Telnet
Table 86 Troubleshooting Telnet
PROBLEM
I cannot access the
ZyAIR through
Telnet.
CORRECTIVE ACTION
Refer to the Problems with the Ethernet Interface section for instructions on checking your
Ethernet connection.
Problems with the WLAN Interface
Table 87 Troubleshooting the WLAN Interface
PROBLEM
Cannot access the
ZyAIR from the
WLAN.
I cannot ping any computer on the
WLAN.
CORRECTIVE ACTION
Make sure the wireless card is properly inserted in the ZyAIR and the link LED is on.
Make sure the wireless adapter on the wireless station is working properly.
Check that both the ZyAIR and your wireless station are using the same ESSID, channel and
WEP keys (if WEP encryption is activated).
Make sure the wireless card is properly inserted in the ZyAIR and the link LED is on.
Make sure the wireless adapter on the wireless station(s) is working properly.
Check that both the ZyAIR and wireless station(s) are using the same ESSID, channel and
WEP keys (if WEP encryption is activated).
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Appendix B
Specifications
Hardware
Table 88 Hardware
Power Specification
Operation Temperature
Storage Temperature
Operation Humidity
Storage Humidity
DC 12V 1200mA
5º C ~ 50º C
-20º C ~ 55º C
10% to 90% (Non-condensing)
5% to 95% (Non-condensing)
Firmware
Table 89 Firmware
Standards
Spanning Tree Protocol
DHCP Relay
Security
IEEE 802.3 and 802.3u 10Base-T and 100Base-TX.
IEEE 802.11b specification compliance for wireless LAN.
IEEE 802.11g specification compliance for wireless LAN.
IEEE 802.1x security standard.
IEEE 802.3af standard.
Wi-Fi certificate.
IEEE 802.1d
Ability to act as a DHCP relay to pass the IP address from the DHCP server from either WAN port or NAT router.
MAC address filtering through WLAN, supporting 32 accounts.
IEEE 802.1x security; MD5, EAP-TLS, EAP-TTLS and PEAP included.
64/128 bits WEP.
WPA support.
Dynamic WEP key exchange.
Mixed WEP & WPA mode supporting both 802.1x with Dynamic WEP and WPA clients.
SSL passthrough.
VPN passthrough.
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Table 89 Firmware (continued)
Diagnostics Capabilities
Management
The access point can perform self-diagnostic tests.
These tests check the integrity of the following circuits:
FLASH memory.
DRAM.
Wireless port.
Syslog.
Errorlog.
Trace log.
Packet Log.
Embedded Web Configurator management.
Command-line interface.
Telnet support; Password-protected telnet access to internal configuration manager.
FTP/TFTP/Web for firmware downloading, configuration backup and restoration.
Telnet remote access support.
Built-in Diagnostic Tool.
SNMP Management.
RADIUS client.
222 Appendix B Specifications
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Appendix C
Power over Ethernet (PoE)
Specifications
You can use a power over Ethernet injector to power this device. The injector must comply to IEEE
802.3af.-7
Table 90 Power over Ethernet Injector Specifications
Power Output
Power Current
15.4 Watts maximum
400 mA maximum
Table 91 Power over Ethernet Injector RJ-45 Port Pin Assignments
1 2 3 4 5 6 7 8
PIN NO RJ-45 SIGNAL ASSIGNMENT
7
8
5
6
3
4
1
2
Output Transmit Data +
Output Transmit Data -
Receive Data +
Power +
Power +
Receive Data -
Power -
Power -
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Appendix D
Brute-Force Password Guessing
Protection
The following describes the commands for enabling, disabling and configuring the brute-force
password guessing protection mechanism for the password. See Appendix I for information on
the command structure.
Table 92 Brute-Force Password Guessing Protection Commands
COMMAND sys pwderrtm sys pwderrtm 0 sys pwderrtm N
DESCRIPTION
This command displays the brute-force guessing password protection settings.
This command turns off the password’s protection from brute-force guessing. The brute-force password guessing protection is turned off by default.
This command sets the password protection to block all access attempts for N (a number from 1 to 60) minutes after the third time an incorrect password is entered.
Example
sys pwderrtm 5
This command sets the password protection to block all access attempts for five minutes after the third time an incorrect password is entered.
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Appendix E
Setting up Your Computer’s IP Address
All computers must have a 10M or 100M Ethernet adapter card and TCP/IP installed.
Windows 95/98/Me/NT/2000/XP, Macintosh OS 7 and later operating systems and all versions of UNIX/LINUX include the software components you need to install and use TCP/IP on your computer. Windows 3.1 requires the purchase of a third-party TCP/IP application package.
TCP/IP should already be installed on computers using Windows NT/2000/XP, Macintosh OS
7 and later operating systems.
After the appropriate TCP/IP components are installed, configure the TCP/IP settings in order to "communicate" with your network.
If you manually assign IP information instead of using dynamic assignment, make sure that your computers have IP addresses that place them in the same subnet as the ZyAIR’s LAN port.
Windows 95/98/Me
Click Start , Settings , Control Panel and double-click the Network icon to open the Network window
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Figure 158 WIndows 95/98/Me: Network: Configuration
Installing Components
The Network window Configuration tab displays a list of installed components. You need a network adapter, the TCP/IP protocol and Client for Microsoft Networks.
If you need the adapter:
1 In the Network window, click Add .
2 Select Adapter and then click Add .
3 Select the manufacturer and model of your network adapter and then click OK .
If you need TCP/IP:
1 In the Network window, click Add .
2 Select Protocol and then click Add .
3 Select Microsoft from the list of manufacturers .
4 Select TCP/IP from the list of network protocols and then click OK .
If you need Client for Microsoft Networks:
1 Click Add .
2 Select Client and then click Add .
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3 Select Microsoft from the list of manufacturers.
4 Select Client for Microsoft Networks from the list of network clients and then click
OK .
5 Restart your computer so the changes you made take effect.
Configuring
1 In the Network window Configuration tab, select your network adapter's TCP/IP entry and click Properties
2 Click the IP Address tab.
• If your IP address is dynamic, select Obtain an IP address automatically .
• If you have a static IP address, select Specify an IP address and type your information into the IP Address and Subnet Mask fields.
Figure 159 Windows 95/98/Me: TCP/IP Properties: IP Address
3 Click the DNS Configuration tab.
• If you do not know your DNS information, select Disable DNS .
• If you know your DNS information, select Enable DNS and type the information in the fields below (you may not need to fill them all in).
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Figure 160 Windows 95/98/Me: TCP/IP Properties: DNS Configuration
4 Click the Gateway tab.
• If you do not know your gateway’s IP address, remove previously installed gateways.
• If you have a gateway IP address, type it in the New gateway field and click Add .
5 Click OK to save and close the TCP/IP Properties window.
6 Click OK to close the Network window. Insert the Windows CD if prompted.
7 Turn on your ZyAIR and restart your computer when prompted.
Verifying Settings
1 Click Start and then Run .
2 In the Run window, type "winipcfg" and then click OK to open the IP Configuration window.
3 Select your network adapter. You should see your computer's IP address, subnet mask and default gateway.
Windows 2000/NT/XP
1 For Windows XP, click start , Control Panel . In Windows 2000/NT, click Start ,
Settings , Control Panel .
230 Appendix E Setting up Your Computer’s IP Address
Figure 161 Windows XP: Start Menu
G-3000H User’s Guide
2 For Windows XP, click Network Connections . For Windows 2000/NT, click Network and Dial-up Connections .
Figure 162 Windows XP: Control Panel
3 Right-click Local Area Connection and then click Properties .
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Figure 163 Windows XP: Control Panel: Network Connections: Properties
4 Select Internet Protocol (TCP/IP) (under the General tab in Win XP) and click
Properties .
Figure 164 Windows XP: Local Area Connection Properties
232
5 The Internet Protocol TCP/IP Properties window opens (the General tab in Windows
XP).
• If you have a dynamic IP address click Obtain an IP address automatically .
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• If you have a static IP address click Use the following IP Address and fill in the IP address , Subnet mask , and Default gateway fields.
Click Advanced .
Figure 165 Windows XP: Advanced TCP/IP Settings
6 If you do not know your gateway's IP address, remove any previously installed gateways in the IP Settin gs tab and click OK .
Do one or more of the following if you want to configure additional IP addresses:
• In the IP Settings tab, in IP addresses, click Add .
• In TCP/IP Address , type an IP address in IP address and a subnet mask in Subnet mask , and then click Add .
• Repeat the above two steps for each IP address you want to add.
• Configure additional default gateways in the IP Settings tab by clicking Add in Default gateways .
• In TCP/IP Gateway Address , type the IP address of the default gateway in Gateway . To manually configure a default metric (the number of transmission hops), clear the Automatic metric check box and type a metric in Metric .
• Click Add .
• Repeat the previous three steps for each default gateway you want to add.
• Click OK when finished.
7 In the Internet Protocol TCP/IP Properties window (the General tab in Windows XP):
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• Click Obtain DNS server address automatically if you do not know your DNS server IP address(es).
• If you know your DNS server IP address(es), click Use the following
DNS server addresses , and type them in the Preferred DNS server and Alternate DNS server fields.
If you have previously configured DNS servers, click Advanced and then the DNS tab to order them.
Figure 166 Windows XP: Internet Protocol (TCP/IP) Properties
8 Click OK to close the Internet Protocol (TCP/IP) Properties window.
9 Click OK to close the Local Area Connection Properties window.
10 Turn on your ZyAIR and restart your computer (if prompted).
Verifying Settings
1 Click Start , All Programs , Accessories and then Command Prompt .
2 In the Command Prompt window, type "ipconfig" and then press [ENTER]. You can also open Network Connections , right-click a network connection, click Status and then click the Support tab.
Macintosh OS 8/9
1 Click the Apple menu, Control Panel and double-click TCP/IP to open the TCP/IP
Control Panel .
234 Appendix E Setting up Your Computer’s IP Address
Figure 167 Macintosh OS 8/9: Apple Menu
G-3000H User’s Guide
2 Select Ethernet built-in from the Connect via list.
Figure 168 Macintosh OS 8/9: TCP/IP
3 For dynamically assigned settings, select Using DHCP Server from the Configure: list.
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4 For statically assigned settings, do the following:
• From the Configure box, select Manually .
• Type your IP address in the IP Address box.
• Type your subnet mask in the Subnet mask box.
• Type the IP address of your ZyAIR in the Router address box.
5 Close the TCP/IP Control Panel .
6 Click Save if prompted, to save changes to your configuration.
7 Turn on your ZyAIR and restart your computer (if prompted).
Verifying Settings
Check your TCP/IP properties in the TCP/IP Control Panel window.
Macintosh OS X
1 Click the Apple menu, and click System Preferences to open the System Preferences window.
Figure 169 Macintosh OS X: Apple Menu
2 Click Network in the icon bar.
• Select Automatic from the Location list.
• Select Built-in Ethernet from the Show list.
• Click the TCP/IP tab.
3 For dynamically assigned settings, select Using DHCP from the Configure list.
236 Appendix E Setting up Your Computer’s IP Address
Figure 170 Macintosh OS X: Network
G-3000H User’s Guide
4 For statically assigned settings, do the following:
• From the Configure box, select Manually .
• Type your IP address in the IP Address box.
• Type your subnet mask in the Subnet mask box.
• Type the IP address of your ZyAIR in the Router address box.
5 Click Apply Now and close the window.
6 Turn on your ZyAIR and restart your computer (if prompted).
Verifying Settings
Check your TCP/IP properties in the Network window.
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Appendix F
IP Address Assignment Conflicts
This appendix describes situations where IP address conflicts may occur. Subscribers with duplicate IP addresses will not be able to access the Internet.
Case A: The ZyAIR is using the same LAN and WAN IP addresses
The following figure shows an example where the ZyAIR is using a WAN IP address that is the same as the IP address of a computer on the LAN.
Figure 171 IP Address Conflicts: Case A
You must set the ZyAIR to use different LAN and WAN IP addresses on different subnets if you enable DHCP server on the ZyAIR. For example, you set the WAN IP address to
192.59.1.1 and the LAN IP address to 10.59.1.1. Otherwise, It is recommended the ZyAIR use a public WAN IP address.
Case B: The ZyAIR LAN IP address conflicts with the DHCP client IP address
In the following figure, the ZyAIR is acting as a DHCP server. The ZyAIR assigns an IP address, which is the same as its LAN port IP address, to a DHCP client attached to the LAN.
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Figure 172 IP Address Conflicts: Case B
To solve this problem, make sure the ZyAIR LAN IP address is not in the DHCP IP address pool.
Case C: The Subscriber IP address is the same as the IP address of a network device
The following figure depicts an example where the subscriber IP address is the same as the IP address of a network device not attached to the ZyAIR.
Figure 173 IP Address Conflicts: Case C
You must set the ZyAIR to use different LAN and WAN IP addresses on different subnets if you enable DHCP server on the ZyAIR. For example, you set the WAN IP address to
192.59.1.1 and the LAN IP address to 10.59.1.1. Otherwise, It is recommended the ZyAIR use a public WAN IP address.
Case D: Two or more subscribers have the same IP address.
By converting all private IP addresses to the WAN IP address, the ZyAIR allows subscribers with different network configurations to access the Internet. However, there are situations where two or more subscribers are using the same private IP address. This may happen when a subscriber is configured to use a static (or fixed) IP address that is the same as the IP address the ZyAIR DHCP server assigns to another subscriber acting as a DHCP client.
In this case, the subscribers are not able to access the Internet.
240 Appendix F IP Address Assignment Conflicts
Figure 174 IP Address Conflicts: Case D
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This problem can be solved by adding a VLAN-enabled switch or set the computers to obtain
IP addresses dynamically.
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Appendix G
Wireless LANs
Wireless LAN Topologies
This section discusses ad-hoc and infrastructure wireless LAN topologies.
Ad-hoc Wireless LAN Configuration
The simplest WLAN configuration is an independent (Ad-hoc) WLAN that connects a set of computers with wireless stations (A, B, C). Any time two or more wireless adapters are within range of each other, they can set up an independent network, which is commonly referred to as an Ad-hoc network or Independent Basic Service Set (IBSS). The following diagram shows an example of notebook computers using wireless adapters to form an Ad-hoc wireless LAN.
Figure 175 Peer-to-Peer Communication in an Ad-hoc Network
BSS
A Basic Service Set (BSS) exists when all communications between wireless stations or between a wireless station and a wired network client go through one access point (AP).
Intra-BSS traffic is traffic between wireless stations in the BSS. When Intra-BSS is enabled, wireless station A and B can access the wired network and communicate with each other.
When Intra-BSS is disabled, wireless station A and B can still access the wired network but cannot communicate with each other.
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Figure 176 Basic Service Set
244
ESS
An Extended Service Set (ESS) consists of a series of overlapping BSSs, each containing an access point, with each access point connected together by a wired network. This wired connection between APs is called a Distribution System (DS).
This type of wireless LAN topology is called an Infrastructure WLAN. The Access Points not only provide communication with the wired network but also mediate wireless network traffic in the immediate neighborhood.
An ESSID (ESS IDentification) uniquely identifies each ESS. All access points and their associated wireless stations within the same ESS must have the same ESSID in order to communicate.
Appendix G Wireless LANs
Figure 177 Infrastructure WLAN
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Channel
A channel is the radio frequency(ies) used by IEEE 802.11a/b/g wireless devices. Channels available depend on your geographical area. You may have a choice of channels (for your region) so you should use a different channel than an adjacent AP (access point) to reduce interference. Interference occurs when radio signals from different access points overlap causing interference and degrading performance.
Adjacent channels partially overlap however. To avoid interference due to overlap, your AP should be on a channel at least five channels away from a channel that an adjacent AP is using.
For example, if your region has 11 channels and an adjacent AP is using channel 1, then you need to select a channel between 6 or 11.
RTS/CTS
A hidden node occurs when two stations are within range of the same access point, but are not within range of each other. The following figure illustrates a hidden node. Both stations (STA) are within range of the access point (AP) or wireless gateway, but out-of-range of each other, so they cannot "hear" each other, that is they do not know if the channel is currently being used. Therefore, they are considered hidden from each other.
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Figure 178 RTS/CTS
When station A sends data to the AP, it might not know that the station B is already using the channel. If these two stations send data at the same time, collisions may occur when both sets of data arrive at the AP at the same time, resulting in a loss of messages for both stations.
RTS/CTS is designed to prevent collisions due to hidden nodes. An RTS/CTS defines the biggest size data frame you can send before an RTS (Request To Send)/CTS (Clear to Send) handshake is invoked.
When a data frame exceeds the RTS/CTS value you set (between 0 to 2432 bytes), the station that wants to transmit this frame must first send an RTS (Request To Send) message to the AP for permission to send it. The AP then responds with a CTS (Clear to Send) message to all other stations within its range to notify them to defer their transmission. It also reserves and confirms with the requesting station the time frame for the requested transmission.
Stations can send frames smaller than the specified RTS/CTS directly to the AP without the
RTS (Request To Send)/CTS (Clear to Send) handshake.
You should only configure RTS/CTS if the possibility of hidden nodes exists on your network and the "cost" of resending large frames is more than the extra network overhead involved in the RTS (Request To Send)/CTS (Clear to Send) handshake.
If the RTS/CTS value is greater than the Fragmentation Threshold value (see next), then the
RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS size.
Note: Enabling the RTS Threshold causes redundant network overhead that could negatively affect the throughput performance instead of providing a remedy.
Fragmentation Threshold
A Fragmentation Threshold is the maximum data fragment size (between 256 and 2432 bytes) that can be sent in the wireless network before the AP will fragment the packet into smaller data frames.
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A large Fragmentation Threshold is recommended for networks not prone to interference while you should set a smaller threshold for busy networks or networks that are prone to interference.
If the Fragmentation Threshold value is smaller than the RTS/CTS value (see previously) you set then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS size.
Preamble Type
A preamble is used to synchronize the transmission timing in your wireless network. There are two preamble modes: Long and Short .
Short preamble takes less time to process and minimizes overhead, so it should be used in a good wireless network environment when all wireless stations support it.
Select Long if you have a ‘noisy’ network or are unsure of what preamble mode your wireless stations support as all IEEE 802.11b compliant wireless adapters must support long preamble.
However, not all wireless adapters support short preamble. Use long preamble if you are unsure what preamble mode the wireless adapters support, to ensure interpretability between the AP and the wireless stations and to provide more reliable communication in ‘noisy’ networks.
Select Dynamic to have the AP automatically use short preamble when all wireless stations support it, otherwise the AP uses long preamble.
Note: The AP and the wireless stations MUST use the same preamble mode in order to communicate.
IEEE 802.11b Wireless LAN
The 802.11b data rate and corresponding modulation techniques are shown in the table below.
The modulation technique defines how bits are encoded onto radio waves.
Table 93 IEEE 802.11b
DATA RATE (MBPS)
1
2
5.5 / 11
MODULATION
DBPSK (Differential Binary Phase Shifted Keying)
DQPSK (Differential Quadrature Phase Shifted Keying )
CCK (Complementary Code Keying)
Note: The ZyAIR may be prone to RF (Radio Frequency) interference from other 2.4
GHz devices such as microwave ovens, wireless phones, Bluetooth enabled devices, and other wireless LANs.
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IEEE 802.1x
In June 2001, the IEEE 802.1x standard was designed to extend the features of IEEE 802.11 to support extended authentication as well as providing additional accounting and control features. It is supported by Windows XP and a number of network devices. Some advantages of IEEE 802.1x are:
• User based identification that allows for roaming.
• Support for RADIUS (Remote Authentication Dial In User Service, RFC 2138, 2139) for centralized user profile and accounting management on a network RADIUS server.
• Support for EAP (Extensible Authentication Protocol, RFC 2486) that allows additional authentication methods to be deployed with no changes to the access point or the wireless stations.
RADIUS
RADIUS is based on a client-server model that supports authentication, authorization and accounting. The access point is the client and the server is the RADIUS server. The RADIUS server handles the following tasks:
• Authentication
Determines the identity of the users.
• Authorization
Determines the network services available to authenticated users once they are connected to the network.
• Accounting
Keeps track of the client’s network activity.
RADIUS is a simple package exchange in which your AP acts as a message relay between the wireless station and the network RADIUS server.
Types of RADIUS Messages
The following types of RADIUS messages are exchanged between the access point and the
RADIUS server for user authentication:
• Access-Request
Sent by an access point requesting authentication.
• Access-Reject
Sent by a RADIUS server rejecting access.
• Access-Accept
Sent by a RADIUS server allowing access.
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• Access-Challenge
Sent by a RADIUS server requesting more information in order to allow access. The access point sends a proper response from the user and then sends another Access-
Request message.
The following types of RADIUS messages are exchanged between the access point and the
RADIUS server for user accounting:
• Accounting-Request
Sent by the access point requesting accounting.
• Accounting-Response
Sent by the RADIUS server to indicate that it has started or stopped accounting.
In order to ensure network security, the access point and the RADIUS server use a shared secret key, which is a password, they both know. The key is not sent over the network. In addition to the shared key, password information exchanged is also encrypted to protect the network from unauthorized access.
Types of Authentication
This appendix discusses some popular authentication types: EAP-MD5 , EAP-TLS , EAP-
TTLS , PEAP and LEAP .
The type of authentication you use depends on the RADIUS server or the AP. Consult your network administrator for more information.
EAP-MD5 (Message-Digest Algorithm 5)
MD5 authentication is the simplest one-way authentication method. The authentication server sends a challenge to the wireless station. The wireless station ‘proves’ that it knows the password by encrypting the password with the challenge and sends back the information.
Password is not sent in plain text.
However, MD5 authentication has some weaknesses. Since the authentication server needs to get the plaintext passwords, the passwords must be stored. Thus someone other than the authentication server may access the password file. In addition, it is possible to impersonate an authentication server as MD5 authentication method does not perform mutual authentication.
Finally, MD5 authentication method does not support data encryption with dynamic session key. You must configure WEP encryption keys for data encryption.
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EAP-TLS (Transport Layer Security)
With EAP-TLS, digital certifications are needed by both the server and the wireless stations for mutual authentication. The server presents a certificate to the client. After validating the identity of the server, the client sends a different certificate to the server. The exchange of certificates is done in the open before a secured tunnel is created. This makes user identity vulnerable to passive attacks. A digital certificate is an electronic ID card that authenticates the sender’s identity. However, to implement EAP-TLS, you need a Certificate Authority (CA) to handle certificates, which imposes a management overhead.
EAP-TTLS (Tunneled Transport Layer Service)
EAP-TTLS is an extension of the EAP-TLS authentication that uses certificates for only the server-side authentications to establish a secure connection. Client authentication is then done by sending username and password through the secure connection, thus client identity is protected. For client authentication, EAP-TTLS supports EAP methods and legacy authentication methods such as PAP, CHAP, MS-CHAP and MS-CHAP v2.
PEAP (Protected EAP)
Like EAP-TTLS, server-side certificate authentication is used to establish a secure connection, then use simple username and password methods through the secured connection to authenticate the clients, thus hiding client identity. However, PEAP only supports EAP methods, such as EAP-MD5, EAP-MSCHAPv2 and EAP-GTC (EAP-Generic Token Card), for client authentication. EAP-GTC is implemented only by Cisco.
LEAP
LEAP (Lightweight Extensible Authentication Protocol) is a Cisco implementation of IEEE
802.1x.
Dynamic WEP Key Exchange
The AP maps a unique key that is generated with the RADIUS server. This key expires when the wireless connection times out, disconnects or reauthentication times out. A new WEP key is generated each time reauthentication is performed.
If this feature is enabled, it is not necessary to configure a default encryption key in the
Wireless screen. You may still configure and store keys here, but they will not be used while
Dynamic WEP is enabled.
Note: EAP-MD5 cannot be used with dynamic WEP key exchange.
For added security, certificate-based authentications (EAP-TLS, EAP-TTLS and PEAP) use dynamic keys for data encryption. They are often deployed in corporate environments, but for public deployment, a simple user name and password pair is more practical.
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The following table is a comparison of the features of authentication types.
Table 94 Comparison of EAP Authentication Types
Mutual Authentication
Certificate – Client
Certificate – Server
Dynamic Key Exchange
Credential Integrity
Deployment Difficulty
Client Identity Protection
EAP-MD5
No
No
No
No
None
Easy
No
EAP-TLS EAP-TTLS
Yes
Yes
Yes
Yes
Strong
Hard
No
Yes
Optional
Yes
Yes
Strong
Moderate
Yes
PEAP
Yes
Optional
Yes
Yes
Strong
Moderate
Yes
LEAP
Yes
No
No
Yes
Moderate
Moderate
No
WPA(2)
Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. WPA 2 (IEEE
802.11i) is a wireless security standard that defines stronger encryption, authentication and key management than WPA.
Key differences between WPA(2) and WEP are improved data encryption and user authentication.
Encryption
Both WPA and WPA2 improve data encryption by using Temporal Key Integrity Protocol
(TKIP), Message Integrity Check (MIC) and IEEE 802.1x. In addition to TKIP, WPA2 also uses Advanced Encryption Standard (AES) in the Counter mode with Cipher block chaining
Message authentication code Protocol (CCMP) to offer stronger encryption.
Temporal Key Integrity Protocol (TKIP) uses 128-bit keys that are dynamically generated and distributed by the authentication server. It includes a per-packet key mixing function, a
Message Integrity Check (MIC) named Michael, an extended initialization vector (IV) with sequencing rules, and a re-keying mechanism.
TKIP regularly changes and rotates the encryption keys so that the same encryption key is never used twice. The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then sets up a key hierarchy and management system, using the pair-wise key to dynamically generate unique data encryption keys to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients. This all happens in the background automatically.
WPA2 AES (Advanced Encryption Standard) is a block cipher that uses a 256-bit mathematical algorithm called Rijndael.
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The Message Integrity Check (MIC) is designed to prevent an attacker from capturing data packets, altering them and resending them. The MIC provides a strong mathematical function in which the receiver and the transmitter each compute and then compare the MIC. If they do not match, it is assumed that the data has been tampered with and the packet is dropped.
By generating unique data encryption keys for every data packet and by creating an integrity checking mechanism (MIC), TKIP makes it much more difficult to decode data on a Wi-Fi network than WEP, making it difficult for an intruder to break into the network.
The encryption mechanisms used for WPA and WPA-PSK are the same. The only difference between the two is that WPA-PSK uses a simple common password, instead of user-specific credentials. The common-password approach makes WPA-PSK susceptible to brute-force password-guessing attacks but it's still an improvement over WEP as it employs an easier-touse, consistent, single, alphanumeric password.
User Authentication
WPA or WPA2 applies IEEE 802.1x and Extensible Authentication Protocol (EAP) to authenticate wireless clients using an external RADIUS database.
If both an AP and the wireless clients support WPA2 and you have an external RADIUS server, use WPA2 for stronger data encryption. If you don't have an external RADIUS server, you should use WPA2 -PSK (WPA2 -Pre-Shared Key) that only requires a single (identical) password entered into each access point, wireless gateway and wireless client. As long as the passwords match, a wireless client will be granted access to a WLAN.
If the AP or the wireless clients do not support WPA2, just use WPA or WPA-PSK depending on whether you have an external RADIUS server or not.
Select WEP only when the AP and/or wireless clients do not support WPA or WPA2. WEP is less secure than WPA or WPA2.
Security Parameters Summary
Refer to this table to see what other security parameters you should configure for each
Authentication Method/ key management protocol type. MAC address filters are not dependent on how you configure these security features.
Table 95 Wireless Security Relational Matrix
AUTHENTICATION
METHOD/ KEY
MANAGEMENT PROTOCOL
ENCRYPTION
METHOD
ENTER
MANUAL KEY
Open None
Open WEP No
Yes
Yes
ENABLE IEEE 802.1X
Enable with Dynamic WEP Key
Enable without Dynamic WEP Key
Disable
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Table 95 Wireless Security Relational Matrix (continued)
AUTHENTICATION
METHOD/ KEY
MANAGEMENT PROTOCOL
Shared
ENCRYPTION
METHOD
ENTER
MANUAL KEY
WEP
WPA WEP
WPA TKIP
WPA-PSK WEP
WPA-PSK TKIP
No
Yes
Yes
No
No
Yes
Yes
ENABLE IEEE 802.1X
Enable with Dynamic WEP Key
Enable without Dynamic WEP Key
Disable
Yes
Yes
Yes
Yes
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Appendix H
IP Subnetting
IP Addressing
Routers “route” based on the network number. The router that delivers the data packet to the correct destination host uses the host ID.
IP Classes
An IP address is made up of four octets (eight bits), written in dotted decimal notation, for example, 192.168.1.1. IP addresses are categorized into different classes. The class of an address depends on the value of its first octet.
• Class “A” addresses have a 0 in the left most bit. In a class “A” address the first octet is the network number and the remaining three octets make up the host ID.
• Class “B” addresses have a 1 in the left most bit and a 0 in the next left most bit. In a class
“B” address the first two octets make up the network number and the two remaining octets make up the host ID.
• Class “C” addresses begin (starting from the left) with 1 1 0. In a class “C” address the first three octets make up the network number and the last octet is the host ID.
• Class “D” addresses begin with 1 1 1 0. Class “D” addresses are used for multicasting.
(There is also a class “E” address. It is reserved for future use.)
Table 96 Classes of IP Addresses
IP ADDRESS:
Class A
Class B
Class C
OCTET 1 OCTET 2
0
10
Network number
Network number
Host ID
Network number
110 Network number Network number
OCTET 3
Host ID
Host ID
Network number
OCTET 4
Host ID
Host ID
Host ID
Note: Host IDs of all zeros or all ones are not allowed.
Therefore:
A class “C” network (8 host bits) can have 2 8 –2 or 254 hosts.
A class “B” address (16 host bits) can have 2 16 –2 or 65534 hosts.
A class “A” address (24 host bits) can have 2 24 –2 hosts (approximately 16 million hosts).
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Since the first octet of a class “A” IP address must contain a “0”, the first octet of a class “A” address can have a value of 0 to 127.
Similarly the first octet of a class “B” must begin with “10”, therefore the first octet of a class
“B” address has a valid range of 128 to 191. The first octet of a class “C” address begins with
“110”, and therefore has a range of 192 to 223.
Table 97 Allowed IP Address Range By Class
CLASS
Class A
Class B
Class C
Class D
ALLOWED RANGE OF FIRST OCTET
(BINARY)
0 0000000 to 0 1111111
10 000000 to 10 111111
110 00000 to 110 11111
1110 0000 to 1110 1111
ALLOWED RANGE OF FIRST OCTET
(DECIMAL)
0 to 127
128 to 191
192 to 223
224 to 239
Subnet Masks
A subnet mask is used to determine which bits are part of the network number, and which bits are part of the host ID (using a logical AND operation). A subnet mask has 32 is a “1” then the corresponding bit in the IP address is part of the network number. If a bit in the subnet mask is “0” then the corresponding bit in the IP address is part of the host ID.
Subnet masks are expressed in dotted decimal notation just as IP addresses are. The “natural” masks for class A, B and C IP addresses are as follows.
Table 98 “Natural” Masks
CLASS
A
B
C
NATURAL MASK
255.0.0.0
255.255.0.0
255.255.255.0
Subnetting
With subnetting, the class arrangement of an IP address is ignored. For example, a class C address no longer has to have 24 bits of network number and 8 bits of host ID. With subnetting, some of the host ID bits are converted into network number bits. By convention, subnet masks always consist of a continuous sequence of ones beginning from the left most bit of the mask, followed by a continuous sequence of zeros, for a total number of 32 bits.
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Since the mask is always a continuous number of ones beginning from the left, followed by a continuous number of zeros for the remainder of the 32 bit mask, you can simply specify the number of ones instead of writing the value of each octet. This is usually specified by writing a “/” followed by the number of bits in the mask after the address.
For example, 192.1.1.0 /25 is equivalent to saying 192.1.1.0 with mask 255.255.255.128.
The following table shows all possible subnet masks for a class “C” address using both notations.
Table 99 Alternative Subnet Mask Notation
SUBNET MASK IP ADDRESS SUBNET MASK “1” BITS
255.255.255.0
255.255.255.128
255.255.255.192
255.255.255.224
255.255.255.240
255.255.255.248
255.255.255.252
/24
/25
/26
/27
/28
/29
/30
LAST OCTET BIT VALUE
0000 0000
1000 0000
1100 0000
1110 0000
1111 0000
1111 1000
1111 1100
The first mask shown is the class “C” natural mask. Normally if no mask is specified it is understood that the natural mask is being used.
Example: Two Subnets
As an example, you have a class “C” address 192.168.1.0 with subnet mask of 255.255.255.0.
Table 100 Two Subnets Example
IP Address
IP Address (Binary)
Subnet Mask
Subnet Mask (Binary)
NETWORK NUMBER
192.168.1.
11000000.10101000.00000001.
255.255.255.
11111111.11111111.11111111.
HOST ID
0
00000000
0
00000000
The first three octets of the address make up the network number (class “C”). You want to have two separate networks.
Divide the network 192.168.1.0 into two separate subnets by converting one of the host ID bits of the IP address to a network number bit. The “borrowed” host ID bit can be either “0” or “1” thus giving two subnets; 192.168.1.0 with mask 255.255.255.128 and 192.168.1.128 with mask 255.255.255.128
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Note: In the following charts, shaded/bolded last octet bit values indicate host ID bits
“borrowed” to form network ID bits. The number of “borrowed” host ID bits determines the number of subnets you can have. The remaining number of host ID bits (after
“borrowing”) determines the number of hosts you can have on each subnet.
Table 101 Subnet 1
IP Address
IP Address (Binary)
Subnet Mask
Subnet Mask (Binary)
Subnet Address: 192.168.1.0
Broadcast Address:
192.168.1.127
NETWORK NUMBER
192.168.1.
11000000.10101000.00000001.
255.255.255.
11111111.11111111.11111111.
Lowest Host ID: 192.168.1.1
Highest Host ID: 192.168.1.126
LAST OCTET BIT
VALUE
0
0 0000000
128
1 0000000
Table 102 Subnet 2
IP Address
IP Address (Binary)
Subnet Mask
Subnet Mask (Binary)
Subnet Address:
192.168.1.128
Broadcast Address:
192.168.1.255
NETWORK NUMBER
192.168.1.
11000000.10101000.00000001.
255.255.255.
11111111.11111111.11111111.
Lowest Host ID: 192.168.1.129
Highest Host ID: 192.168.1.254
LAST OCTET BIT VALUE
128
1 0000000
128
1 0000000
The remaining 7 bits determine the number of hosts each subnet can have. Host IDs of all zeros represent the subnet itself and host IDs of all ones are the broadcast address for that subnet, so the actual number of hosts available on each subnet in the example above is 2 7 – 2 or 126 hosts for each subnet.
192.168.1.0 with mask 255.255.255.128 is the subnet itself, and 192.168.1.127 with mask
255.255.255.128 is the directed broadcast address for the first subnet. Therefore, the lowest IP address that can be assigned to an actual host for the first subnet is 192.168.1.1 and the highest is 192.168.1.126. Similarly the host ID range for the second subnet is 192.168.1.129 to
192.168.1.254.
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Example: Four Subnets
The above example illustrated using a 25-bit subnet mask to divide a class “C” address space into two subnets. Similarly to divide a class “C” address into four subnets, you need to
“borrow” two host ID bits to give four possible combinations of 00, 01, 10 and 11. The subnet mask is 26 bits (11111111.11111111.11111111.
11 000000) or 255.255.255.192. Each subnet contains 6 host ID bits, giving 2 6 -2 or 62 hosts for each subnet (all 0’s is the subnet itself, all
1’s is the broadcast address on the subnet).
Table 103 Subnet 1
NETWORK NUMBER
IP Address
IP Address (Binary)
192.168.1.
11000000.10101000.00000001.
Subnet Mask (Binary) 11111111.11111111.11111111.
Subnet Address: 192.168.1.0
Lowest Host ID: 192.168.1.1
Broadcast Address:
192.168.1.63
Highest Host ID: 192.168.1.62
LAST OCTET BIT
VALUE
0
00 000000
11 000000
Table 104 Subnet 2
NETWORK NUMBER
IP Address
IP Address (Binary)
Subnet Mask (Binary)
Subnet Address: 192.168.1.64
192.168.1.
11000000.10101000.00000001.
11111111.11111111.11111111.
Lowest Host ID: 192.168.1.65
Broadcast Address: 192.168.1.127
Highest Host ID: 192.168.1.126
Table 105 Subnet 3
IP Address
IP Address (Binary)
Subnet Mask (Binary)
Subnet Address:
192.168.1.128
Broadcast Address:
192.168.1.191
NETWORK NUMBER
192.168.1.
11000000.10101000.00000001.
11111111.11111111.11111111.
Lowest Host ID: 192.168.1.129
Highest Host ID: 192.168.1.190
LAST OCTET BIT
VALUE
64
01 000000
11 000000
LAST OCTET BIT
VALUE
128
10 000000
11 000000
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Table 106 Subnet 4
IP Address
IP Address (Binary)
Subnet Mask (Binary)
Subnet Address:
192.168.1.192
Broadcast Address:
192.168.1.255
NETWORK NUMBER
192.168.1.
11000000.10101000.00000001.
11111111.11111111.11111111.
Lowest Host ID: 192.168.1.193
Highest Host ID: 192.168.1.254
LAST OCTET BIT VALUE
192
11 000000
11 000000
Example Eight Subnets
Similarly use a 27-bit mask to create 8 subnets (001, 010, 011, 100, 101, 110).
The following table shows class C IP address last octet values for each subnet.
Table 107 Eight Subnets
SUBNET
7
8
5
6
3
4
1
2
SUBNET ADDRESS FIRST ADDRESS
128
160
192
224
0
32
64
96
1
33
65
97
129
161
193
225
LAST ADDRESS
BROADCAST
ADDRESS
158
190
222
254
30
62
94
126
159
191
223
255
31
63
95
127
The following table is a summary for class “C” subnet planning.
Table 108 Class C Subnet Planning
5
6
7
3
4
1
2
NO. “BORROWED” HOST
BITS
SUBNET MASK
255.255.255.128 (/25)
255.255.255.192 (/26)
255.255.255.224 (/27)
255.255.255.240 (/28)
255.255.255.248 (/29)
255.255.255.252 (/30)
255.255.255.254 (/31)
NO. SUBNETS
2
4
8
16
32
64
128
NO. HOSTS PER
SUBNET
6
2
1
126
62
30
14
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Subnetting With Class A and Class B Networks.
For class “A” and class “B” addresses the subnet mask also determines which bits are part of the network number and which are part of the host ID.
A class “B” address has two host ID octets available for subnetting and a class “A” address has
three host ID octets ( see Table 96 ) available for subnetting.
The following table is a summary for class “B” subnet planning.
Table 109 Class B Subnet Planning
NO. “BORROWED” HOST
BITS
SUBNET MASK
13
14
15
9
10
11
12
7
8
5
6
3
4
1
2
255.255.128.0 (/17)
255.255.192.0 (/18)
255.255.224.0 (/19)
255.255.240.0 (/20)
255.255.248.0 (/21)
255.255.252.0 (/22)
255.255.254.0 (/23)
255.255.255.0 (/24)
255.255.255.128 (/25)
255.255.255.192 (/26)
255.255.255.224 (/27)
255.255.255.240 (/28)
255.255.255.248 (/29)
255.255.255.252 (/30)
255.255.255.254 (/31)
NO. SUBNETS
512
1024
2048
4096
8192
16384
32768
32
64
128
256
2
4
8
16
NO. HOSTS PER
SUBNET
6
2
1
126
62
30
14
32766
16382
8190
4094
2046
1022
510
254
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Appendix I
Command Interpreter
The following describes how to use the command interpreter. Enter 24 in the main menu to bring up the system maintenance menu. Enter 8 to go to Menu 24.8 - Command Interpreter
Mode . See the included disk or zyxel.com for more detailed information on these commands.
Note: Use of undocumented commands or misconfiguration can damage the unit and possibly render it unusable.
Command Syntax
• The command keywords are in courier new font.
• Enter the command keywords exactly as shown, do not abbreviate.
• The required fields in a command are enclosed in angle brackets <> .
• The optional fields in a command are enclosed in square brackets [] .
• The | symbol means or.
For example, sys filter netbios config <type> <on|off> means that you must specify the type of netbios filter and whether to turn it on or off.
Command Usage
A list of valid commands can be found by typing help or ?
at the command prompt. Always type the full command. Type exit to return to the SMT main menu when finished.
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Appendix J
Log Descriptions
This appendix provides descriptions of example log messages.
Table 110 System Maintenance Logs
LOG MESSAGE DESCRIPTION
Time calibration is successful
The router has adjusted its time based on information from the time server.
Time calibration failed The router failed to get information from the time server.
DHCP client gets %s A DHCP client got a new IP address from the DHCP server.
DHCP client IP expired A DHCP client's IP address has expired.
DHCP server assigns %s The DHCP server assigned an IP address to a client.
SMT Login Successfully Someone has logged on to the router's SMT interface.
SMT Login Fail Someone has failed to log on to the router's SMT interface.
WEB Login Successfully Someone has logged on to the router's web configurator interface.
WEB Login Fail Someone has failed to log on to the router's web configurator interface.
TELNET Login Successfully Someone has logged on to the router via telnet.
TELNET Login Fail Someone has failed to log on to the router via telnet.
FTP Login Successfully Someone has logged on to the router via FTP.
FTP Login Fail Someone has failed to log on to the router via FTP.
Table 111 ICMP Notes
TYPE CODE DESCRIPTION
0
3
4
5
0
0
1
2
3
4
5
0
Echo Reply
Echo reply message
Destination Unreachable
Net unreachable
Host unreachable
Protocol unreachable
Port unreachable
A packet that needed fragmentation was dropped because it was set to Don't
Fragment (DF)
Source route failed
Source Quench
A gateway may discard internet datagrams if it does not have the buffer space needed to queue the datagrams for output to the next network on the route to the destination network.
Redirect
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Table 111 ICMP Notes (continued)
TYPE CODE DESCRIPTION
8
11
12
13
14
15
16
0
1
2
3
0
0
1
0
0
0
0
0
Redirect datagrams for the Network
Redirect datagrams for the Host
Redirect datagrams for the Type of Service and Network
Redirect datagrams for the Type of Service and Host
Echo
Echo message
Time Exceeded
Time to live exceeded in transit
Fragment reassembly time exceeded
Parameter Problem
Pointer indicates the error
Timestamp
Timestamp request message
Timestamp Reply
Timestamp reply message
Information Request
Information request message
Information Reply
Information reply message
Table 112 Sys log
LOG MESSAGE
Mon dd hr:mm:ss hostname src="<srcIP:srcPort>" dst="<dstIP:dstPort>" msg="<msg>" note="<note>"
DESCRIPTION
This message is sent by the "RAS" when this syslog is generated. The messages and notes are defined in this appendix’s other charts.
Log Commands
Go to the command interpreter interface (the Command Interpreter appendix explains how to access and use the commands).
Configuring What You Want the ZyAIR to Log
Use the sys logs load command to load the log setting buffer that allows you to configure which logs the ZyAIR is to record.
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Use sys logs category followed by a log category and a parameter to decide what to record
Table 113 Log Categories and Available Settings
LOG CATEGORIES AVAILABLE PARAMETERS error mten
0, 1, 2, 3
0, 1
Use 0 to not record logs for that category, alerts for that category, and
1 to record only logs for that category,
3 to record both logs and alerts for that category.
2 to record only
Use the sys logs save command to store the settings in the ZyAIR (you must do this in order to record logs).
Displaying Logs
Use the sys logs display command to show all of the logs in the ZyAIR’s log.
Use the sys logs category display command to show the log settings for all of the log categories.
Use the sys logs display [log category] command to show the logs in an individual ZyAIR log category.
Use the sys logs clear command to erase all of the ZyAIR’s logs.
Log Command Example
This example shows how to set the ZyAIR to record the error logs and alerts and then view the results.
ras> sys logs load ras> sys logs category error 3 ras> sys logs save ras> sys logs display access
#. time source destination notes message
0 | 11/11/2002 15:10:12 | 172.22.3.80:137 | 172.22.255.255:137 | ACCESS BLOCK
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268 Appendix J Log Descriptions
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Appendix K
Indoor Installation Recommendations
An antenna couples RF signals onto air. A transmitter within a wireless device sends an RF signal to the antenna, which propagates the signal through the air. The antenna also operates in reverse by capturing RF signals from the air.
Positioning the antennas properly increases the range and coverage area of a wireless LAN.
Antenna Characteristics
Frequency
An antenna in the frequency of 2.4GHz (IEEE 802.11b) or 5GHz(IEEE 802.11a) is needed to communicate efficiently in a wireless LAN.
Radiation Pattern
A radiation pattern is a diagram that allows you to visualize the shape of the antenna’s coverage area.
Antenna Gain
Antenna gain, measured in dB (decibel), is the increase in coverage within the RF beam width.
Higher antenna gain improves the range of the signal for better communications.
For an indoor site, each 1 dB increase in antenna gain results in a range increase of approximately 2.5%. For an unobstructed outdoor site, each 1dB increase in gain results in a range increase of approximately 5%. Actual results may vary depending on the network environment.
Antenna gain is sometimes specified in dBi, which is how much the antenna increases the signal power compared to using an isotropic antenna. An isotropic antenna is a theoretical perfect antenna that sends out radio signals equally well in all directions. dBi represents the true gain that the antenna provides.
Types of Antennas For WLAN
There are two types of antennas used for wireless LAN applications.
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• Omni-directional antennas send the RF signal out in all directions on a horizontal plane.
The coverage area is torus-shaped (like a donut) which makes these antennas ideal for a room environment. With a wide coverage area, it is possible to make circular overlapping coverage areas with multiple access points.
• Directional antennas concentrate the RF signal in a beam, like a flashlight does with the light from its bulb. The angle of the beam determines the width of the coverage pattern.
Angles typically range from 20 degrees (very directional) to 120 degrees (less directional). Directional antennas are ideal for hallways and outdoor point-to-point applications.
Positioning Antennas
In general, antennas should be mounted as high as practically possible and free of obstructions. In point-to–point application, position both antennas at the same height and in a direct line of sight to each other to attain the best performance.
For omni-directional antennas mounted on a table, desk, and so on, point the antenna up. For omni-directional antennas mounted on a wall or ceiling, point the antenna down. For a single
AP application, place omni-directional antennas as close to the center of the coverage area as possible.
For directional antennas, point the antenna in the direction of the desired coverage area.
270 Appendix K Indoor Installation Recommendations
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Appendix L
Power Adaptor Specifications
Table 114 North American Plug Standards
AC Power Adaptor Model
Input Power
Output Power
Power Consumption
Safety Standards
ADS6818-1812-W 1215
100~240 Volts AC, 50~60 Hz, 0.5 A
12 Volts DC, 1.5A, 18W
6 W Max
UL, CUL (UL60950 Third Edition, CSA C22.2 No.
60950)
Table 115 European Plug Standards
AC Power Adaptor Model
Input Power
Output Power
Power Consumption
Safety Standards
ADS6818-1812-B 1215
100~240 Volts AC, 50~60 Hz, 0.5 A
12 Volts DC, 1.5 A, 18 W
6 W Max
TUV-GS, CE (EN 60950)
Table 116 United Kingdom Plug Standards
AC Power Adaptor Model
Input Power
Output Power
Power Consumption
Safety Standards
ADS6818-1812-D 1215
100~240 Volts AC, 50~60 Hz,0.5 A
12 Volts DC, 1.5 A, 18 W
6 W Max
TUV-GS (BS EN 60950)
Table 117 Australia and New Zealand Plug Standards
AC Power Adaptor Model
Input Power
Output Power
Power Consumption
Safety Standards
ADS6818-1812-A 1215
100~240 Volts AC, 50~60 Hz, 0.5 A
12 Volts DC, 1.5 A, 18 W
6 W Max
DOFT (AS/NZS 60950, AS/NZSB 3112:1-2)
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Appendix M
Text File Based Auto Configuration
This chapter describes how administrators can use text configuration files to configure the wireless LAN settings for multiple APs.
Text File Based Auto Configuration Overview
You can use plain text configuration files to configure the wireless LAN settings on multiple
APs. The AP can automatically get a configuration file from a TFTP server at startup or after renewing DHCP client information.
Figure 179 Text File Based Auto Configuration
Use one of the following methods to give the AP the IP address of the TFTP server where you store the configuration files and the name of the configuration file that it should download.
You can have a different configuration file for each AP. You can also have multiple APs use the same configuration file.
Note: If adjacent APs use the same configuration file, you want to leave out the channel setting since they could interfere with each other’s wireless traffic.
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Auto Configuration by DHCP
A DHCP response can use options 66 and 67 to assign a TFTP server IP address and a filename. If the AP is configured as a DHCP client, these settings can be used to perform auto configuration.
Table 118 Auto Configuration by DHCP
COMMAND wcfg autocfg dhcp [enable | disable]
DESCRIPTION
Turn configuration of TFTP server IP address and filename through DHCP on or off.
If this feature is enabled and the DHCP response provides a TFTP server IP address and a filename, the AP will try to download the file from the specified TFTP server. The AP then uses the file to configure wireless LAN settings.
Note: Not all DHCP servers allow you to specify options 66 and 67.
Manual Configuration
Use the following command to manually configure a TFTP server IP address and a file name for the AP to use for auto provisioning whenever the AP starts up. See
Mode” on page 207 for how to access the Command Interpreter (CI).
Table 119 Manual Configuration
COMMAND wcfg autocfg server [IP]
[filename]
DESCRIPTION
Specify the TFTP server IP address and file name from which the AP is to download a configuration file whenever the AP starts up.
Configuration Via SNMP
You can configure and trigger the auto configuration remotely via SNMP.
Use the following procedure to have the AP download the configuration file.
Table 120 Configuration via SNMP
STEPS
Step 1
Step 2
Step 3
Step 4
MIB VARIABLE pwTftpServer pwTftpFileName pwTftpFileType pwTftpOpCommand
VALUE
Set the IP address of the TFTP server.
Set the file name, for example, g3000hcfg.txt.
Set to 3 (text configuration file).
Set to 2 (download).
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Verifying Your Configuration File Upload Via SNMP
You can use SNMP management software to display the configuration file version currently on the device by using the following MIB.
Table 121 Displaying the File Version
ITEM pwCfgVersion
OBJECT ID DESCRIPTION
1.3.6.1.4.1.890.1.9.1.2
This displays the current configuration file version.
Troubleshooting Via SNMP
If you have any difficulties with the configuration file upload, you can try using the following
MIB 10 to 20 seconds after using SNMP to have the AP download the configuration file.
Table 122 Displaying the File Version
ITEM OBJECT ID DESCRIPTION pwTftpOpStatus 1.3.6.1.4.1.890.1.9.1.6
This displays the current operating status of the TFTP client.
Configuration File Format
The text based configuration file must use the following format.
Figure 180 Configuration File Format
!#ZYXEL PROWLAN
!#VERSION 12 wcfg security 1 xxx wcfg security save wcfg ssid 1 xxx wcfg ssid save
The first line must be !#ZYXEL PROWLAN.
The second line must specify the file version. The AP compares the file version with the version of the last configuration file that it downloaded. If the version of the downloaded file is the same or smaller (older), the AP ignores the file. If the version of the downloaded file is larger (newer), the AP uses the file.
Configuration File Rules
You can only use the wlan and wcfg commands in the configuration file. The AP ignores other ZyNOS commands but continues to check the next command.
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The AP ignores any improperly formatted commands and continues to check the next line.
If there are any errors while processing the configuration file, the AP generates a message with the line number and reason for the first error (subsequent errors during the processing of an individual configuration file are not recorded). You can use SNMP management software to display the message by using the following MIB.
Table 123 Displaying the Auto Configuration Status
ITEM pwAutoCfgMessage
OBJECT ID
1.3.6.1.4.1.890.1.9.1.9
DESCRIPTION
Auto configuration status message string
The commands will be executed line by line just like if you entered them in a console or Telnet
CI session. Be careful to ensure the integrity of the whole AP configuration. If there are existing settings in the AP, the newly loaded configuration file will either coexist with the previous settings or replace them.
You can zip each configuration file. You must use the store compression method and a .zip file extension. When zipping a configuration file, you can also add password protection using the same password that you use to log into the AP.
wcfg Command Configuration File Examples
These example configuration files use the wcfg command to configure security and SSID profiles.
Figure 181 WEP Configuration File Example
!#ZYXEL PROWLAN
!#VERSION 11 wcfg security 1 name Test-wep wcfg security 1 security wep wcfg security 1 wep keysize 64 ascii wcfg security 1 wep key1 abcde wcfg security 1 wep key2 bcdef wcfg security 1 wep key3 cdefg wcfg security 1 wep key4 defgh wcfg security 1 wep keyindex 1 wcfg security save wcfg ssid 1 name ssid-wep wcfg ssid 1 vlan 101 wcfg ssid 1 security Test-wep wcfg ssid 1 qos besteffort wcfg ssid 1 l2iolation disable wcfg ssid 1 macfilter disable wcfg ssid save
276 Appendix M Text File Based Auto Configuration
Figure 182 802.1X Configuration File Example
!#ZYXEL PROWLAN
!#VERSION 12 wan security 2 name Test-8021x wcfg security 2 security 8021x-dynamic128 wcfg security 2 reauthtime 1800 wcfg security 2 idletime 3600 wcfg security save wcfg radius 2 name radius-rd wcfg radius 2 primary 172.23.3.4 1812 untagged secret wcfg radius 2 backup 172.23.3.5 1812 untagged secret wcfg radius save wcfg ssid 2 name ssid-8021x wcfg ssid 2 vlan 102 wcfg ssid 2 security Test-8021x wcfg ssid 2 radius radius-rd wcfg ssid 2 qos besteffort wcfg ssid 2 l2iolation disable wcfg ssid 2 macfilter disable wcfg ssid save
Figure 183 WPA-PSK Configuration File Example
!#ZYXEL PROWLAN
!#VERSION 13 wcfg security 3 name Test-wpapsk wcfg security 3 vlan untag wcfg security 3 security wpapsk wcfg security 3 wpa passphrase qwertyuiop wcfg security 3 wpa encryption tkip wcfg security 3 reauthtime 1800 wcfg security 3 idletime 3600 wcfg security 3 groupkeytime 1800 wcfg security save wcfg ssid 3 name ssid-wpapsk wcfg ssid 3 vlan 103 wcfg ssid 3 security Test-wpapsk wcfg ssid 3 qos besteffort wcfg ssid 3 l2iolation disable wcfg ssid 3 macfilter disable wcfg ssid save
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Figure 184 WPA Configuration File Example
!#ZYXEL PROWLAN
!#VERSION 14 wcfg security 4 name Test-wpa wcfg security 4 mode wpa wcfg security 4 reauthtime 1800 wcfg security 4 idletime 3600 wcfg security 4 groupkeytime 1800 wcfg security save wcfg radius 4 name radius-rd1 wcfg radius 4 primary 172.0.20.38 1812 20 secret wcfg radius 4 backup 172.0.20.39 1812 20 secret wcfg radius save wcfg ssid 4 name ssid-wpa wcfg ssid 4 vlan 104 wcfg ssid 4 security Test-wpa wcfg ssid 4 radius radius-rd1 wcfg ssid 4 qos besteffort wcfg ssid 4 l2iolation disable wcfg ssid 4 macfilter disable wcfg ssid save
wlan Command Configuration File Example
This example configuration file uses the wlan command to configure the AP to use the security and SSID profiles from the wcfg command configuration file examples and general wireless settings. You could actually combine all of this chapter’s example configuration files into a single configuration file. Remember that the commands are applied in order. So for example, you would place the commands that create security and SSID profiles before the commands that tell the AP to use those profiles.
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Figure 185 wlan Configuration File Example
!#ZYXEL PROWLAN
!#VERSION 15 wcfg ssid 1 name ssid-wep wcfg ssid 1 security Test-wep wcfg ssid 2 name ssid-8021x wcfg ssid 2 security Test-8021x wcfg ssid 2 radius radius-rd wcfg ssid 3 name ssid-wpapsk wcfg ssid 3 security Test-wpapsk wcfg ssid 4 name ssid-wpa2psk wcfg ssid 4 security Test-wpa2psk wcfg ssid save
!line starting with '!' is comment
!change to channel 8 wlan chid 8
!change operating mode -> AP mode,
!then select ssid-wep as running WLAN profile wlan opmode 0 wlan ssidprofile ssid-wep
!change operating mode -> MESSID mode,
!then select ssid-wpapsk, ssid-wpa2psk as running WLAN profiles wlan opmode 3 wlan ssidprofile ssid-wpapsk ssid-wpa2psk
! set output power level to 50% wlan plevel 2
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Appendix N
Wireless LAN Manager
This appendix shows you how to install and use the Wireless LAN Manager.
The Wireless LAN Manager (WLM) software simplifies SNMP based firmware and configuration file upgrades on the AP. WLM is an Element Manager System (EMS) plug-in for SNMPc management software. The Wireless LAN Manager is referred to here as the EMS.
The EMS uses ZyXEL’s proprietary Management Information Base (MIB). The proprietary
MIB file is included on the CD with the EMS. You can also find it in the zipped file that contains the current firmware file. You can download the current firmware from www.zyxel.com.
System Requirements
These are the system requirements for operating the EMS software.
• CPU: Intel Pentium 4, 1.6 GHz or above
• Memory (RAM): 1 GB or more
• Hard Disk free space: 20 MB or more
• Screen Resolution: 1024x768 pixels
• Ethernet Adaptor: 10/100 Mbps
• Operating System: Windows 2000 (with service pack 1), Windows XP or Windows
Server 2003 and all using NTFS file system.
• Castle Rock’s SNMPc 7.
EMS Installation Overview
The following gives an overview of what you need to do to install the EMS:
1 Install SNMPc. See the documentation that comes with your SNMPc for information.
2 Install the EMS.
3 Add custom MIB files in SNMPc.
4 Locate device(s) that you want the EMS to manage.
Installing the EMS
Follow the steps below to install the EMS server on a computer.
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1 Install SNMPc if it is not already installed. See the user’s guide for more information.
2 Insert the CD. The CD auto-runs. Click the Tools link and then the WLM EMS link.
Otherwise you can go to the WLM EMS folder and double-click Setup.exe
.
3 A Welcome screen displays. Click Next to continue.
Figure 186 EMS Installation Wizard: Welcome Screen
4 You must select the same directory where you installed SNMPc. Click Browse if it’s different from the destination folder shown. Click Next to continue.
Figure 187 EMS Installation Wizard: Choose Destination Screen
282
5 When the installation process is complete, a screen displays as shown. Click Finish .
Appendix N Wireless LAN Manager
Figure 188 EMS Installation Wizard: Complete Screen
G-3000H User’s Guide
SNMPc Network Manager Startup
Use the following steps to set whether or not SNMPc starts automatically each time you turn on your computer.
1 Click Start, Programs, SNMPc Network Manager, Startup System to manually start the SNMPc network manager.
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Figure 189 Starting the SNMPc Network Manager
2 Click Config , System Startup...
.
Figure 190 Accessing the SNMPc Startup Settings
284
3 Select Auto Startup check box if you want SNMPc to automatically start each time you turn on your computer, otherwise clear it. Click Close .
Appendix N Wireless LAN Manager
Figure 191 SNMPc Task Setup Screen
G-3000H User’s Guide
Adding MIBs
The Management Information Base (MIB) is designed for holding management information on systems (such as the AP) that the standard MIB does not include.
1 From the SNMPc Network Manager main screen, click Config , Mib Database .
Figure 192 Accessing the Compile Mibs Screen
2 In the Compile Mibs screen that displays, click Add .
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Figure 193 Compile Mibs Screen
3 The Add Mib files...
screen opens. Select zyxel-prowireless.mib
in the list box and click
OK.
Figure 194 Add Mib files Screen
4 In the Compile Mibs screen, click Compile .
Figure 195 Compile Mibs Screen
286
5 Click Yes when asked to confirm.
Appendix N Wireless LAN Manager
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Figure 196 Compile Mibs Confirm Screen
6 This screen appears after the compiling finishes. Click OK .
Figure 197 Compile Mib OK Screen
7 Finally click Done in the Compile Mibs screen.
Proprietary MIBs
The following objects are contained in the zyxel-prowireless.mib
.
Table 124 Proprietary MIBs
ITEMS OBJECT ID (OID) DESCRIPTION pwCommon pwTraps
1.3.6.1.4.1.890.1.9.1 AP status monitoring, firmware/configuration file upload / download.
1.3.6.1.4.1.890.1.9.2 Sets the device to send (or not send) SNMP traps.
pwStation pwAPDetect
1.3.6.1.4.1.890.1.9.3 Displays the associated stations.
1.3.6.1.4.1.890.1.9.4 Displays the neighboring APs. You need to configure the timer to update the AP list.
pwWlanControl 1.3.6.1.4.1.890.1.9.5 Sets WLAN related parameters, Currently it can set the MAC filter and transmission power.
Finding Your Device
You can add your device(s) manually or have the SNMPc Network Manager find the new device(s) automatically using auto-discovery.
Note: Auto-discovery can be slow and generates extra network traffic. For a large network you may prefer to add devices manually.
Add Device(s) Manually
Follow the steps below to add your device(s) manually.
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1 Select the Root Subnet .
Figure 198 Selecting the Root Subnet
2 Click Insert , MAP Object , Device .
Figure 199 Accessing the MAP Object Properties Screen
3 In the MAP Object Properties screen, enter a descriptive device name and IP address for the device.
Figure 200 MAP Object Properties: General
288
4 Click the Access tab.
Appendix N Wireless LAN Manager
Figure 201 MAP Object Properties: Access
G-3000H User’s Guide
5 Change the read and write communities (passwords) to match the ones you use in your
AP. Then click OK .
Note: For security purposes, it is strongly recommended to change the Read
Community and Read/Write Community on your AP. Write down this information and keep in a safe place so you will not forget it later.
6 An icon displays for the device.
Figure 202 Device Icon
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Device Auto-Discovery
Do the following to enable auto-discovery.
1 Click Config , Discovery/Polling .
Figure 203 Accessing the Discovery/Polling Agents Screen
2 Select the Enable Discovery check box and click OK .
Figure 204 Discovery/Polling Agents Screen
290
3 After the device has been found, an icon and label appear in the network manager view window. Right-click the device icon and select Properties .
Note: Auto-discovery may take hours for a large and complex network.
Appendix N Wireless LAN Manager
Figure 205 Device Icon
4 The MAP Object Properties screen opens. Click the Access tab.
Figure 206 MAP Object Properties: Access
G-3000H User’s Guide
5 Change the read and write communities (passwords) to match the ones you use in your
AP. Then click OK .
Note: For security purposes, it is strongly recommended to change the Read
Community and Read/Write Community on your AP. Write down this information and keep in a safe place so you will not forget it later.
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Accessing the EMS
In the SNMPc main screen, double-click the device icon to open the WLM EMS screen. Use this screen to view the current firmware and text configuration file versions on an AP. You can also upload firmware and text configuration files from a TFTP server to a specific AP. This is also referred to as text file based auto configuration.
Figure 207 WLM EMS Screen
Troubleshooting
1 SNMPc and/or EMS will not install properly
• Make sure that the computer on which you want to install the SNMPc and EMS meets the minimum hardware and software requirements.
• Shut down any running services or applications which may affect the installation.
• Remove any previous versions of SNMP software from your computer.
• Re-install SNMPc and EMS in that order.
2 I cannot find my device in the SNMPc Management screen.
• Check that you have added and compiled the MIBs correctly (see “Adding MIBs” on page 285 ). Make sure you follow the instructions exactly.
• Check that the map object properties are correct for initial installation; see “Add
Device(s) Manually” on page 287 . Make sure the IP address entered is the IP address of the switch you want to manage via the EMS.
• If you want to use auto-discovery, make sure you have it enabled; see “Device Auto-
Discovery” on page 290 .
• Make sure that the computer you have installed the EMS on, is connected to the network where the device is located.
• Make sure your computer’s Ethernet card is working properly.
292 Appendix N Wireless LAN Manager
G-3000H User’s Guide
• Make sure that the device you want to manage is connected to the network and operating properly.
• If the problem still persists, uninstall and re-install the EMS software.
Appendix N Wireless LAN Manager 293
G-3000H User’s Guide
294 Appendix N Wireless LAN Manager
G-3000H User’s Guide
Index
A
Address Assignment
Alternative Subnet Mask Notation
Antenna
Directional
Omni-directional
Antenna gain
AP (access point)
Applications
Authentication databases
Auto Configuration
Auto Configuration Status
Auto-crossover Ethernet/Fast Ethernet Interface
Auto-Discovery
Auto-negotiating Ethernet/Fast Ethernet Interface
auto-negotiation
B
Backup
backup
Basic Service Set
Bridge Protocol Data Units (BPDUs)
Bridge/Repeater
Brute-Force Password Guessing Protection
BSS
Community
Configuration File
Examples
Format
Configuration File Rules
Contact Information
Contacting Customer Support
CoS
CPU Load
CTS (Clear to Send)
Customer Support
D
Data encryption
Default
Denmark, Contact Information
DHCP
Diagnostic
Diagnostic Tools
Differentiated Services
DiffServ
DiffServ Code Point (DSCP)
DiffServ Code Points
DiffServ marking rule
Distribution System
DS Field
DS field
DSCPs
Dynamic WEP Key Exchange
C
CA
Certificate Authority
Channel
Interference
Channel ID
Class of Service
Class of Service (CoS)
CLI Command
Configure tagged VLAN example
Collision
Command Interpreter
Index
E
EAP
EAP Authentication
EAP-MD5
EAP-TLS
EAP-TTLS
Element Manager System
EMS
Accessing
295
G-3000H User’s Guide
Installation
System Requirements
Troubleshooting
Encryption
Error Log
Error/Information Messages
Sample
ESS
ESS ID
ESS IDentification
Extended Service Set
Extended Service Set IDentification
,
F
File Version
Filename Conventions
Finland, Contact Information
Firmware File
Maintenance
Fragment Threshold
Fragmentation Threshold
Fragmentation threshold
France, Contact Information
FTP
Restrictions
FTP File Transfer
FTP Restrictions
G
General Setup
General Specifications
Germany, Contact Information
H
Hidden Menus
Hidden node
Host
Host IDs
How STP Works
HyperTerminal program
I
IBSS
IEEE 802.1x
In-band Management
Independent Basic Service Set
Install SNMPc
Installing EMS
Internet access
Internet Security Gateway
IP Address
IP Addressing
IP Classes
IPSec VPN Capability
L
LAN
LEAP
Link type
Log and Trace
Log Descriptions
Logs
M
MAC address
MAC Address Filter Action
MAC Address Filtering
MAC Filter
MAC filter
MAC Filtering
MAC service data unit
,
Main Menu
Management Information Base (MIB)
Management Information Database
Management VLAN
MAP Object Properties
Max Age
Max. Frame Burst
MIB
MIB Addition
MSDU
296 Index
N
Network Management
North America Contact Information
Norway, Contact Information
O
Online Registration
Out-of-band Management
P
Packets
Password
Path cost
PEAP
Per-Hop Behavior
PHB (Per-Hop Behavior)
Ping
PoE
Power over Ethernet
Power Specification
Preamble Mode
Priorities
Private IP Address
Product Model
Product Serial Number
Proprietary MIBs
Q
Quick Start Guide
R
RADIUS
Shared Secret Key
RADIUS Message Types
RADIUS Messages
Rapid STP
RAS
Index
G-3000H User’s Guide
Rate
Receiving
Transmission
Read Community
Read/Write Community
ReAuthentication Time
,
,
Registration
Regular Mail
Related Documentation
Remote Authentication Dial In User Service
Remote Management and NAT
Remote Management Limitations
,
Remote Management Setup
Remote Node
Required fields
Reset Button
Restore
Restore Configuration
Roaming
Requirements
Root bridge
RTS (Request To Send)
RTS Threshold
RTS/CTS handshake
,
S
Security Parameters
Serial Number
Service Set
SMT Menu Overview
SNMP
Community
Configuration
Manager
MIBs
Traps
Trusted Host
SNMPc Network Manager
SNMPc Network Manager Startup
Spain, Contact Information
Spanning Tree Protocol
SSL Passthrough
STP
STP (Spanning Tree Protocol)
STP Path Costs
STP Port States
STP Terminology
Subnet Mask
297
G-3000H User’s Guide
Subnet Masks
Subnetting
Support E-mail
Sweden, Contact Information
Syntax Conventions
System
Console Port Speed
Diagnostic
Log and Trace
System Information
System Status
Time and Date
System Information
System Information & Diagnosis
System Maintenance
,
,
System Name
System Requirements for EMS
System Timeout
,
T
TCP/IP
Telephone
Telnet
Telnet Configuration
Telnet Under NAT
Text File Based Auto Configuration
TFTP
Restrictions
TFTP File Transfer
TFTP Restrictions
Time and Date Setting
Time Setting
Time Zone
ToS
Trace Records
Troubleshooting
Accessing ZyAIR
Ethernet Port
Start-Up
Troubleshooting EMS
Type Of Service
User Authentication
User Profiles
V
Valid CI Commands
Virtual Local Area Network
VLAN
W
Warranty Information
wcfg Command
WDS
Web
Web Configurator
Web Site
WEP
WEP Encryption
WEP encryption
Wi-Fi Multimedia QoS
Wi-Fi Protected Access
Wireless Client WPA Supplicants
Wireless Distribution System
Wireless LAN
Wireless LAN Manager
Wireless LAN Setup
Wireless LAN Topologies
Wireless security
Wizard Setup
WLAN
Interference
Security parameters
wlan Command
WLM
Worldwide Contact Information
WPA
WPA with RADIUS Application
WPA, WPA2
U
Upload Firmware
Use Authentication
Z
ZyAIR LED
ZyNOS
298 Index
ZyNOS F/W Version
zyxel-prowireless.mib
G-3000H User’s Guide
Index 299
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