3Com 3CRWDR101A-75 Network Router User Manual

OfficeConnect
ADSL Wireless 54 Mbps 11g Firewall
Router
User Guide
®
WL-552
3CRWDR101A-75
3CRWDR101B-75
http://www.3Com.com/
Part No. 10015091 Rev. AA
Published March 2006
3Com Corporation
350 Campus Drive,
Marlborough, MA
USA 01752-3064
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CONTENTS
ABOUT THIS GUIDE
Naming Convention 7
Conventions 8
Feedback About This User Guide
Related Documentation 9
1
8
INTRODUCING THE ROUTER
OfficeConnect ADSL Wireless 54 Mbps 11g Firewall Router
Router Advantages 13
Package Contents 13
Minimum System and Component Requirements 14
Physical Features 14
2
INSTALLING THE ROUTER
Introduction 17
Safety Information 17
Positioning the Router 17
Using the Rubber Feet 18
Wall Mounting 18
Powering Up the Router 19
Connecting the Router 19
3
SETTING UP YOUR COMPUTERS
Obtaining an IP Address Automatically 23
Windows 2000 23
Windows XP 25
Windows 98/ME 25
Macintosh 25
Disabling PPPoE and PPTP Client Software 26
Disabling Web Proxy 26
11
4
RUNNING THE SETUP WIZARD
Accessing the Setup Wizard 27
Setup Wizard - Change Password 30
Setup Wizard - Time and Time Zone 30
Setup Wizard - Connection Type 31
Setup Wizard - LAN Settings 36
Setup Wizard - Wireless Settings 37
Setup Wizard - Configuration Summary 38
5
CONFIGURING THE ROUTER
Navigating Through the Router Configuration screens
Main Menu 39
Welcome Screen 39
Status 39
LAN Settings 40
LAN Settings 40
DHCP Clients List 41
Wireless Settings 43
Configuration 44
Encryption 45
Connection Control 50
Client List 51
WDS Settings 51
Advance 52
Profile 53
Internet Settings 54
ATM PVC 54
DNS 65
Hostname & Clone MAC address 66
Firewall 67
SPI 67
Special Applications 71
Virtual Servers 72
DMZ 73
39
Schedule Rule 74
PC Privileges 75
URL Filter 77
Server Control 79
Quality of Service 81
QoS Settings 81
Traffic Mapping 81
Traffic Statistics 82
Advanced 83
Security 83
Static Routes 86
RIP 87
DDNS 88
SNMP 90
Syslog 91
Proxy ARP 92
System Tools 93
Restart Router 93
Configuration 93
Upgrade 94
Time Zone 95
Ping 96
Traceroute 97
DNS Lookup 98
Status and Logs 99
Status 99
ADSL Status 99
ATM PVC Status 100
Routing Table 100
Logs 101
Support/Feedback 102
Support 102
Feedback 102
6
TROUBLESHOOTING
Basic Connection Checks 103
Browsing to the Router Configuration Screens
103
Connecting to the Internet 104
Forgotten Password and Reset to Factory Defaults
Wireless Networking 105
Recovering from Corrupted Software 107
Frequently Asked Questions 108
A
104
IP ADDRESSING
The Internet Protocol Suite 109
Managing the Router over the Network 109
IP Addresses and Subnet Masks 109
How does a Device Obtain an IP Address and Subnet Mask?
DHCP Addressing 111
Static Addressing 111
Auto-IP Addressing 111
B
111
TECHNICAL SPECIFICATIONS
OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router
Standards 114
C
SAFETY INFORMATION
D
END USER SOFTWARE LICENSE AGREEMENT
E
OBTAINING SUPPORT FOR YOUR PRODUCT
Register Your Product 123
Purchase Value-Added Services 123
Troubleshoot Online 124
Access Software Downloads 124
Telephone Technical Support and Repair
Contact Us 125
124
113
GLOSSARY
REGULATORY NOTICES
INDEX
ABOUT THIS GUIDE
This guide describes how to install and configure the 3Com
OfficeConnect© ADSL Wireless 54 Mbps 11g Firewall Router
(3CRWDR101A-75/3CRWDR101B-75).
This guide is intended for use by those responsible for installing and
setting up network equipment; consequently, it assumes a basic working
knowledge of LANs (Local Area Networks) and Internet Routers.
If a release note is shipped with the 3Com OfficeConnect ADSL Wireless
54 Mbps 11g Firewall Router and contains information that differs from
the information in this guide, follow the information in the release note.
Most user guides and release notes are available in Adobe Acrobat
Reader Portable Document Format (PDF) on the 3Com World Wide Web
site:
http://www.3Com.com
Naming Convention
Throughout this guide, the 3Com OfficeConnect© ADSL Wireless 54
Mbps 11g Firewall Router is referred to as the “Router”.
Category 3 and Category 5 Twisted Pair Cables are referred to as Twisted
Pair Cables throughout this guide.
8
ABOUT THIS GUIDE
Conventions
Table 1 and Table 2 list conventions that are used throughout this guide.
Table 1 Notice Icons
Icon
Notice Type
Description
Information note
Information that describes important features or
instructions.
Caution
Information that alerts you to potential loss of data or
potential damage to an application, system, or device.
Warning
Information that alerts you to potential personal
injury.
Table 2 Text Conventions
Convention
The words “enter”
and “type”
Keyboard key names
Words in italics
Description
When you see the word “enter” in this guide, you must type
something, and then press Return or Enter. Do not press
Return or Enter when an instruction simply says “type.”
If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+). Example:
Press Ctrl+Alt+Del
Italics are used to:
■
Emphasize a point.
■
Denote a new term at the place where it is defined in the
text.
■
Identify menu names, menu commands, and software
button names. Examples:
From the Help menu, select Contents.
Click OK.
Feedback About This User Guide
Feedback About
This User Guide
9
Your suggestions are very important to us. They will help make our
documentation more useful to you. Please e-mail comments about this
document to 3Com at:
pddtechpubs_comments@3com.com
Please include the following information when commenting:
■
Document title
■
Document part number (on the title page)
■
Page number (if appropriate)
Example:
■
3Com OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router User
Guide
■
Part Number 10015091 Rev. AA
■
Page 24
Do not use this e-mail address for technical support questions. For
information about contacting Technical Support, please refer to
Appendix C.
Related
Documentation
In addition to this guide, each Router document set includes one
Installation Guide. This guide contains the instructions you need to install
and configure your Router.
10
ABOUT THIS GUIDE
1
INTRODUCING THE ROUTER
Welcome to the world of networking with 3Com®. In the modern
business environment, communication and sharing information is crucial.
Computer networks have proved to be one of the fastest modes of
communication but, until recently, only large businesses could afford the
networking advantage.
OfficeConnect ADSL
Wireless 54 Mbps
11g Firewall Router
The OfficeConnect ADSL Wireless 54 Mbps 11g Firewall Router is
designed to provide a cost-effective means of sharing a single broadband
Internet connection amongst several wired and wireless computers. The
Router also provides protection in the form of an electronic “firewall”
preventing anyone outside of your network from seeing your files or
damaging your computers. The Router can also prevent your users from
accessing Web sites which you find unsuitable.
Figure 1 shows an example network without a Router. In this network,
only one computer is connected to the Internet. This computer must
always be powered on for the other computers on the network to access
the Internet.
12
CHAPTER 1: INTRODUCING THE ROUTER
Figure 1 Example Network Without a Router
When you use the Router in your network (Figure 2), it becomes your
connection to the Internet. Connections can be made directly to the
Router, or to an OfficeConnect Switch or Hub, expanding the number of
computers you can have in your network.
Figure 2 Example Network Using a Firewall Router
Router Advantages
Router Advantages
Package Contents
13
The advantages of the Router include:
■
Shared Internet connection for both wired and wireless computers
■
High speed 802.11g wireless networking
■
No need for a dedicated, “always on” computer serving as your
Internet connection
■
Cross-platform operation for compatibility with Windows, Unix and
Macintosh computers
■
Easy-to-use, Web-based setup and configuration
■
Provides centralization of all network address settings (DHCP)
■
Acts as a Virtual server to enable remote access to Web, FTP, and other
services on your network
■
Security — Firewall protection against Internet hacker attacks and
encryption to protect wireless network traffic
The Router kit includes the following items:
■
One OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router
■
One power adapter for use with the Router
■
Four rubber feet
■
One Telephone Cable
■
One CD-ROM containing this User Guide
■
Installation Guide
■
One Support and Safety Information Sheet
■
One Warranty Flyer
If any of these items are missing or damaged, please contact your retailer.
14
CHAPTER 1: INTRODUCING THE ROUTER
Minimum System
and Component
Requirements
Physical Features
Your Router requires that the computer(s) and components in your
network be configured with at least the following:
■
A computer with an operating system that supports TCP/IP
networking protocols (for example Windows 98/NT/Me/2000/XP, Unix,
Mac OS 8.5 or higher).
■
An Ethernet 10 Mbps or 10/100 Mbps NIC for each computer to be
connected to the four-port switch on your Router.
■
An 802.11b or 802.11g wireless NIC.
■
An active ADSL subscription and connection.
■
A Web browser that supports JavaScript, such as Netscape 4.7 or
higher, Internet Explorer 5.0 or higher, or Mozilla 1.2.1 or higher.
The front panel of the Router contains a series of indicator lights (LEDs)
that help describe the state of various networking and connection
operations.
Figure 3 Router - Front Panel
1 Alert LED
Orange
Fast flash during self test. If self test fails the LED will remain on.
Fast flash during software upgrade.
Fast flash for software reset to the factory defaults.
Fast flash for hardware reset to the factory defaults.
The LED is on for 2 seconds when the firewall detects a hacker attack.
Physical Features
15
2 Power LED
Green
Indicates that the Router is powered on, and the boot up is successful.
3 SYNC LED
Green
If the LED is on it indicates that DSL connection is present. This LED
flashes during configuration at power up.
4 Online LED
Green
If this LED is on, your username/password has been authenticated
successfully with your ISP.
5 Wireless LAN (WLAN) Status LED
Green
If the LED is on it indicates that wireless networking is enabled. If the LED
is flashing, the link is OK and data is being transmitted or received. If the
LED is off, the Wireless LAN has been disabled in the Router, or there is a
problem. Refer to Chapter 6 “Troubleshooting”.
6 LAN Status LEDs
Green
If the LED is on, the link between the port and the next piece of network
equipment is OK. If the LED is flashing, the link is OK and data is being
transmitted or received. If the LED is off, nothing is connected, or the
connected device is switched off, or there is a problem with the
connection (refer to Chapter 6 “Troubleshooting”). The port will
automatically adjust to the correct speed and duplex.
16
CHAPTER 1: INTRODUCING THE ROUTER
The rear panel (Figure 4) of the Router contains four LAN ports, one ADSL
port, a reset button, a power OK LED, and a power adapter socket.
Figure 4 Router - Rear Panel
7 Wireless Antennae
The antennae should be placed in a ‘V’ position when initially installed.
CAUTION: Do not force the antennae beyond their mechanical stops.
Rotating the antennae further may cause damage.
8 ADSL Port
Using the RJ-11 cable provided, you should connect your Router to the
telephone socket via a splitter.
9 Power OK LED
Indicates the Router is powered on, the power adapter is working
properly.
10 Power Adapter Socket
Only use the power adapter that is supplied with this Router. Do not use
any other adapter.
11 Reset Button
If you want to reset your Router to factory default settings, and cannot
access the web management interface (for example, due to a lost
password), then you may use this button. Refer to “Forgotten Password
and Reset to Factory Defaults” on page 104 for further details.
12 Ethernet Ports
Using suitable RJ-45 cables, you can connect your Router to a computer,
or to any other piece of equipment that has an Ethernet connection (for
example, a hub or a switch). These ports have an automatic MDI/MDIX
feature, which means either straight-through or a crossover cable can be
used.
2
Introduction
Safety Information
INSTALLING THE ROUTER
This chapter will guide you through a basic installation of the Router,
including:
■
Connecting the Router to the Internet.
■
Connecting the Router to your network.
■
Setting up your computers for networking with the Router.
Please note the following:
WARNING: Please read the “Safety Information” section in Appendix C
before you start.
VORSICHT: Bitte lesen Sie den Abschnitt “Wichtige Sicherheitshinweise”
sorgfältig durch, bevor Sie das Gerät einschalten.
AVERTISSEMENT: Veuillez lire attentivement la section “Consignes
importantes de sécurité” avant de mettre en route.
Positioning the
Router
You should place the Router in a location that:
■
is conveniently located for connection to the telephone socket.
■
is centrally located to the wireless computers that will connect to the
Router. A suitable location might be on top of a high shelf or similar
furniture to optimize wireless connections to computers in both
horizontal and vertical directions, allowing wider coverage.
■
allows convenient connection to the computers that will be connected
to the four LAN ports on the rear panel, if desired.
■
allows easy viewing of the front panel LED indicator lights, and access
to the rear panel connectors, if necessary.
18
CHAPTER 2: INSTALLING THE ROUTER
When positioning your Router, ensure:
Using the Rubber
Feet
Wall Mounting
■
It is out of direct sunlight and away from sources of heat.
■
Cabling is away from power lines, fluorescent lighting fixtures, and
sources of electrical noise such as radios, transmitters and broadband
amplifiers.
■
Water or moisture cannot enter the case of the unit.
■
Air flow around the unit and through the vents in the side of the case
is not restricted. 3Com recommends you provide a minimum of
25 mm (1 in.) clearance.
Use the four self-adhesive rubber feet to prevent your Router from
moving around on your desk or when stacking with flat top units. Only
stick the feet to the marked areas at each corner of the underside of your
Router.
There are two slots on the underside of the Router that can be used for
wall mounting.
When wall mounting the unit, ensure that it is within reach of the power
outlet.
You will need two suitable screws to wall mount the unit. To do this:
1 Ensure that the wall you use is smooth, flat, dry and sturdy and make two
screw holes which are 150 mm (5.9 in.) apart.
2 Fix the screws into wall, leaving their heads 3 mm (0.12 inch) clear of the
wall surface.
3 Remove any connections to the unit and locate it over the screw heads.
When in line, gently push the unit on to the wall and move it downwards
to secure.
When making connections, be careful not to push the unit up and off the
wall.
CAUTION: Only wall mount single units, do not wall mount stacked
units.
Powering Up the Router
Powering Up the
Router
19
To power up the Router:
1 Plug the power adapter into the power adapter socket located on the
back panel of the Router.
2 Plug the power adapter into a standard electrical wall socket.
3 Press the power button located on the back of the Router.
Connecting the
Router
The first step for installing your Router is to physically connect it to the
telephone socket and then connect it to a computer in order to be able to
access the Internet. See Figure 5:
Figure 5 Connecting the Router
net
Power
Supply Unit
Inter
Telephone
Socket
3Com OfficeConnect
ADSL Wireless 11g Firewall Router
Splitter/
Microfilter Block
Your PC
Wireless
Users
1 Run the provided telephone cable from the wall jack providing ADSL
service to the ADSL port on your Router. When inserting an ADSL RJ-11
plug, be sure the tab on the plug clicks into position to ensure that it is
properly seated. If you are using splitterless ADSL service, add low-pass
filters between the ADSL wall jack and your telephones. (These filters pass
voice signals through but filter data signals out.)
2 Then:
■
If you are using a full-rate (G.dmt) connection, your service provider
will attach the outside ADSL line to a data/voice splitter. In this case
20
CHAPTER 2: INSTALLING THE ROUTER
you can connect your phones and computer directly to the splitter as
shown below (Figure 6):
or
■
If you are using a splitterless (G.lite) connection, then your service
provider will attach the outside ADSL line directly to your phone
system. In this case you can connect your phones and computer
directly to the incoming ADSL line, but you will have to add low-pass
filters to your phones as shown below (Figure 7)
Figure 6 Installing with a splitter
Plain Old
Telephone
System (POTS)
Residential
Connection
Point (NID)
Voice
Splitter
Data
Router
or
Ethernet
hub or switch
Connecting the Router
21
Figure 7 Installing without a splitter
Plain Old
Telephone
System (POTS)
Voice
Residential
Connection
Point [Network
Interface
Device (NID)]
Filter
Voice
& Data
Voice
& Data
Router
Data
or
Ethernet
hub or switch
You have now completed the hardware installation of your Router. Next
you need to set up your computers so that they can make use of the
Router to communicate with the Internet.
3Com recommends that you perform the initial Router configuration
from a computer that is directly connected to one of the LAN ports.
If you configure the Router from a wireless computer, note that you may
lose contact with the Router if you change the wireless configuration.
To communicate wirelessly with your Router, your wireless NIC should be
set as follows:
■
Encryption — none
■
SSID — 3Com
■
Channel — 11
22
CHAPTER 2: INSTALLING THE ROUTER
3
SETTING UP YOUR COMPUTERS
The Router has the ability to dynamically allocate network addresses to
the computers on your network, using DHCP. However, your computers
need to be configured correctly for this to take place. To change the
configuration of your computers to allow this, follow the instructions in
this chapter.
Obtaining an IP
Address
Automatically
Windows 2000
If you are using a Windows 2000-based computer, use the following
procedure to change your TCP/IP settings:
1 From the Windows Start Menu, select Settings > Control Panel.
2 Double click on Network and Dial-Up Connections.
3 Double click on Local Area Connection.
4 Click on Properties.
5 A screen similar to Figure 8 should be displayed. Select Internet Protocol
TCP/IP and click on Properties.
24
CHAPTER 3: SETTING UP YOUR COMPUTERS
Figure 8 Local Area Properties Screen
6 Ensure that the options Obtain an IP address automatically, and Obtain
DNS server address automatically are both selected as shown in Figure 9.
Click OK.
Figure 9 Internet Protocol (TCP/IP) Properties Screen
7 Restart your computer.
Obtaining an IP Address Automatically
25
Windows XP
1 From the Windows Start Menu, select Control Panel.
2 Click on Network and Internet Connections.
3 Click on the Network Connections icon.
4 Double click on LAN or High Speed Connection icon. A screen titled Local
Area Connection Status will appear.
5 Select Internet Protocol TCP/IP and click on Properties.
6 Ensure that the options Obtain an IP address automatically, and Obtain
DNS servers automatically are both selected. Click OK.
7 Restart your computer.
Windows 98/ME
1 From the Windows Start Menu, select Settings > Control Panel.
2 Double click on Network. Select the TCP/IP item for your network card
and click on Properties.
3 In the TCP/IP dialog, select the IP Address tab, and ensure that Obtain IP
address automatically is selected. Click OK.
Macintosh
If you are using a Macintosh computer, use the following procedure to
change your TCP/IP settings:
1 From the desktop, select Apple Menu, Control Panels, and TCP/IP.
2 In the TCP/IP control panel, set Connect Via: to Ethernet.
3 In the TCP/IP control panel, set Configure: to Using DHCP Server.
4 Close the TCP/IP dialog box, and save your changes.
5 Restart your computer.
26
CHAPTER 3: SETTING UP YOUR COMPUTERS
Disabling PPPoE
and PPTP Client
Software
If you have PPPoE client software installed on your computer, you will
need to disable it. To do this:
1 From the Windows Start Menu, select Settings > Control Panel.
2 Double click on Internet Options.
3 Select the Connections Tab. A screen similar to Figure 10 should be
displayed.
4 Select the Never dial a connection option.
Figure 10 Internet Properties Screen
You may want to remove the PPPoE client software from your computer
to free resources, as it is not required for use with the Router.
Disabling Web
Proxy
Ensure that you do not have a web proxy enabled on your computer.
Go to the Control Panel and click on Internet Options. Select the
Connections tab and click LAN Settings at the bottom. Make sure that
the Use Proxy Server option is unchecked.
4
Accessing the Setup
Wizard
RUNNING THE SETUP WIZARD
The Router setup program is Web-based, which means that it is accessed
through your Web browser (Netscape Navigator 4.7 or higher, Internet
Explorer 5.0 or higher, or Mozilla 1.2.1 or higher).
To use the Setup Wizard:
1 Ensure that you have at least one computer connected to the Router.
Refer to Chapter 2 for details on how to do this.
2 Launch your Web browser on the computer.
3 Enter the following URL in the location or address field of your browser:
http://192.168.1.1 (Figure 11). The Login screen displays.
Figure 11 Web Browser Location Field (Factory Default)
28
CHAPTER 4: RUNNING THE SETUP WIZARD
4 To log in as an administrator, enter the password (the default password is
admin) in the System Password field and click Log in (Figure 12).
Figure 12 Router Login Screen
5 When you have logged in,
■
if you are logging in for the first time, the Country Selection screen
will appear (Figure 13). Please select the country form the drop-down
menu, and click Apply.
Figure 13 Country Selection Screen
The Wizard will then launch automatically (refer to Figure 16). You will be
guided step by step through a basic setup procedure.
■
if the Router has been configured previously, the Welcome screen will
appear (Figure 14). There are three tabs: Notice Board, Password and
Wizard.
Accessing the Setup Wizard
29
Figure 14 Welcome Screen
■
Go to the Notice Board tab to see the current software information. To
view the Web help, click the Help button.
■
Go to the Password tab to change the password (Figure 15).
■
Go to the Wizard tab to do a quick setup of the Router (Figure 16).
The password screen allows you to change the current password and set
the login time limit to the Router’s management interface.
Figure 15 Password Screen
1 To change the current password, enter the password in the Current
Password field.
2 Enter the new password in the New Password field, and enter it again in
the Confirm New Password field.
30
CHAPTER 4: RUNNING THE SETUP WIZARD
3 Enter the time period in Login Timeout to set a maximum period of time
for which the login session is maintained during inactivity (Default: 10
minutes).
Setup Wizard Change Password
To ensure the security of your Router, it is recommended that you choose
a new password - this should be a mix of letters and numbers, and not
easily guessed by others. To leave the current password unchanged, leave
the fields blank and click Next.
Figure 16 Change Password Screen
Setup Wizard - Time
and Time Zone
The Time and Time Zone screen allows you to set up the time for the
Router.
Figure 17 Time and Time Zone Screen
1 If you want to automatically synchronize the Router with a public time
server, check the Enable box in the Using Time Server NTP field.
2 Select the time zone in the Set Time Zone drop-down menu.
3 Select the desired servers from the Time Server drop-down menu.
Accessing the Setup Wizard
31
4 Check the Enable box in the Daylight Savings field, if daylight savings
applies to your area.
5 Click Next.
Setup Wizard Connection Type
The Connection Type screen allows you to set up the Router for the type
of Internet connection you have. Before setting up your connection type,
have your account information from your ISP ready.
Figure 18 Connection Type Screen
Select a DSL mode from the following:
■
PPPoE — PPP over Ethernet, providing routing for multiple PCs, see
page 32
■
PPPoA — PPP over ATM, providing routing for multiple PCs, see
page 33
■
Bridge Mode (for a single PC) — RFC1483 Bridged Mode, for single
PCs only, see page 34
■
Routing Mode over ATM — RFC1483 Routed Mode, for multiple PCs,
see page 34
■
Dynamic/Fixed IP in 1483 Bridge Mode (for multiple PCs), see page 35
and click Next.
For further information on selecting a mode see “Internet Settings” on
page 54.
32
CHAPTER 4: RUNNING THE SETUP WIZARD
PPPoE Mode
To set up the Router for use with a PPP over Ethernet (PPPoE) connection,
use the following procedure:
Figure 19 PPPoE Screen
1 Enter your user name in the Username field.
2 Enter your password in the Password field.
3 Re-type your password in the Retype Password field.
4 Enter your VPI and VCI information in the VPI/VCI fields.
5 Select the encapsulation type (LLC or VC MUX) in the Encapsulation
drop-down menu. This information should be provided to you by your ISP.
6 Check all of your settings, and then click Next.
The LAN Settings screen will then be displayed (refer to Figure 24).
Accessing the Setup Wizard
33
PPPoA Mode
To set up the Router for use with a PPP over ATM (PPPoA) connection, use
the following procedure:
Figure 20 PPPoA Screen
1 Enter your user name in the Username field.
2 Enter your password in the Password field.
3 Re-type your password in the Retype Password field.
4 Enter your VPI and VCI information in the VPI/VCI fields.
5 Select the encapsulation type (LLC or VC MUX) in the Encapsulation
drop-down menu. This information should be provided to you by your ISP.
6 Check all of your settings, and then click Next.
The LAN Settings screen will then be displayed (refer to Figure 24).
34
CHAPTER 4: RUNNING THE SETUP WIZARD
Bridge Mode (for a single PC)
To set up the Router for use with an RFC1483 bridged connection, use
the following procedure:
Figure 21 Bridged Mode Screen
1 Enter your VPI and VCI information in the VPI/VCI fields.
2 Select the encapsulation type (LLC or VC MUX) in the Encapsulation
drop-down menu. This information should be provided to you by your ISP.
3 Check all of your settings, and then click Next.
The LAN Settings screen will then be displayed (refer to Figure 24).
Routing Mode over ATM
To set up the Router for use with an RFC1483 routed connection, use the
following procedure:
Figure 22 Routing Mode Screen
Accessing the Setup Wizard
35
1 Enter your Internet IP address in the WAN IP field.
2 Enter the subnet mask in the Subnet Mask field.
3 Enter the default gateway IP address in the Default Gateway field.
4 Enter the DNS address in the DNS field.
5 Enter your VPI and VCI information in the VPI/VCI fields.
6 Select the encapsulation type (LLC or VC MUX) in the Encapsulation
drop-down menu. This information should be provided to you by your ISP.
7 Check all of your settings, and then click Next.
The LAN Settings screen will then be displayed (refer to Figure 24).
Dynamic/Fixed IP in 1483 Bridge Mode (For Multiple PCs)
For bridge mode to work, you need to assign an IP address to the Router.
You can either configure the Router to obtain an IP address automatically
from a DHCP server or assign a fixed or static IP address to it.
Figure 23 Dynamic/Fixed IP for Bridge Mode Screen
To obtain an IP address automatically from a DHCP server:
Check the Get WAN IP By DCHP checkbox, and then click Next.
The LAN Settings screen will then be displayed (refer to Figure 24).
36
CHAPTER 4: RUNNING THE SETUP WIZARD
To assign a fixed IP address:
1 Enter your Internet IP address in the WAN IP field.
2 Enter the subnet mask in the Subnet Mask field.
3 Enter the default gateway IP address in the Default Gateway field.
4 Enter the DNS address in the DNS field.
5 Enter your VPI and VCI information in the VPI/VCI text boxes.
6 Select the encapsulation type (LLC or VC MUX) in the Encapsulation
drop-down menu. This information should be provided to you by your ISP.
7 Check all of your settings, and then click Next.
The LAN Settings screen will then be displayed (refer to Figure 24).
Setup Wizard - LAN
Settings
The LAN Settings screen allows you to set the default IP address and
DHCP client IP range for the Router.
Figure 24 The LAN Settings Screen
1 To change the Router’s default IP address, enter the new IP address in the
IP Address field, and then enter the subnet mask in the Subnet Mask
field.
2 Select the On/Off button to turn on/turn off the DHCP function in the
DHCP Server field.
3 Enter the client IP address range in the IP Pool Start Address and IP Pool
End Address fields.
4 Click Next. The Wireless Settings screen will be displayed (refer to
Figure 25).
Accessing the Setup Wizard
Setup Wizard Wireless Settings
37
The Wireless Settings screen allows you to set up the SSID and radio
channel used for the wireless connection.
Figure 25 Wireless Settings Screen
1 Select the channel you want to use from the Channel drop-down menu.
2 Specify the SSID to be used by your Wireless Network in the SSID field. If
there are other wireless networks in your area, you should give your
wireless network a unique name.
38
CHAPTER 4: RUNNING THE SETUP WIZARD
Setup Wizard Configuration
Summary
When you have completed the Setup Wizard, a configuration summary
will appear. Verify the configuration information of the Router and then
click Apply to save your settings. 3Com recommends that you print out
this page for your records.
Figure 26 Configuration Summary Screen
Your Router is now configured and ready for use.
See Chapter 5 for a detailed description of the Router configuration.
5
CONFIGURING THE ROUTER
Navigating
Through the Router
Configuration
screens
This chapter describes all the screens available through the Router
configuration screens, and is provided as a reference. To get to the
configuration screens, enter the Router’s default IP in the location bar of
your browser. The default IP is http://192.168.1.1.
However, if you changed the Router LAN IP address during initial
configuration, use the new IP address instead. Enter your password to
login to the management interface. (The default password is admin).
Main Menu
Welcome Screen
Status
The main menu is located on the left side, as shown in Figure 27. When
you click on an item from the main menu, the corresponding screen will
then appear in the center.
The Welcome screen shows the current software information.
Figure 27 Welcome Screen
40
CHAPTER 5: CONFIGURING THE ROUTER
LAN Settings
Your Router is equipped with a DHCP server that will automatically assign
IP addresses to each computer on your network. The factory default
settings for the DHCP server will work with most applications. If you need
to make changes to the settings, you can do so.
The LAN settings screen allows you to:
■
Change the default IP address of the Router. The default IP is
192.168.1.1
■
Change the Subnet Mask. The default setting is 255.255.255.0
■
Enable/Disable the DHCP Server Function. The default is ON (Enabled).
■
Specify the Starting and Ending IP Pool address. The default is
Starting: 2 / Ending: 254.
■
Specify the IP address Lease Time. The default is Half day.
■
Specify a local Domain Name. The default is NONE.
■
Specify the IP address of 3Com NBX call processor.
The Router will also provide a list of all client computers connected to the
Router.
LAN Settings
The LAN Settings screen is used to specify the LAN IP address of your
Router, and to configure the DHCP server.
Figure 28 LAN Settings Screen
LAN Settings
41
1 Enter the Router’s IP Address and Subnet Mask in the appropriate fields.
The default IP address is 192.168.1.1.
2 If you want to use the Router as a DHCP Server, select On in the DHCP
Server field.
3 Enter the IP address range in the IP Pool Start Address and IP Pool End
Address fields.
4 Specify the DHCP Lease time by selecting the required value from the
Lease Time drop-down menu. The lease time is the length of time the
DHCP server will reserve the IP address for each computer.
5 Specify the Local Domain Name for your network (this step is optional).
6 Enter the IP address of the NBX Call Processor in the 3Com NBX Call
Processor field (this step is optional).
7 Check all of your settings, and then click Apply.
DHCP Clients List
The DHCP Clients List provides details on the devices that have received IP
addresses from the Router. The list is only created when the Router is set
up as a DHCP server. A maximum of 253 clients can be connected to the
Router.
Figure 29 DHCP Clients List Screen
For each device that is connected to the LAN, the following information is
displayed:
■
IP address — The Internet Protocol (IP) address issued to the client
machine.
42
CHAPTER 5: CONFIGURING THE ROUTER
■
Host Name — The client machine’s host name, if configured.
■
MAC Address — The Media Access Control (MAC) address of the
client’s network card.
■
Client Type — Whether the client is connected to the Router by wired
or wireless connection.
■
Check the Fix checkbox to permanently fix the IP address.
■
Click Release to release the displayed IP address.
■
Click New to allocate an IP address to a MAC address (refer to
Figure 30). Enter the required details and click Apply to save your
settings.
Figure 30 Fixed Mapping Clients List Screen
The DHCP server will give out addresses to both wired and wireless
clients.
Wireless Settings
Wireless Settings
43
The Wireless Settings screens allow you to configure the settings for the
wireless connections.
You can enable or disable the wireless connection for your LAN. When
disabled, no wireless PCs can gain access to either the Internet or other
PCs on your wired or wireless LAN through this Router.
Figure 31 Wireless Settings Screen
There are seven tabs available:
■
Configuration
■
Encryption
■
Connection Control
■
Client List
■
WDS
■
Advance
■
Profile
44
CHAPTER 5: CONFIGURING THE ROUTER
Configuration
The Wireless Configuration Screen allows you to turn on/ turn off the
wireless function, and set up basic wireless settings.
Figure 32 Wireless Configuration Screen
To enable the wireless function:
1 Check Enable Wireless Networking checkbox.
2 Select the wireless channel you want to use from the Channel drop-down
menu.
3 Specify the SSID to be used by your wireless network in the SSID field. If
there are other wireless networks in your area, you should give your
wireless network a unique name.
4 Enable or disable SSID Broadcast.
A feature of many wireless network adapters is that a computer's SSID
can be set to ANY, which means it looks randomly for any existing
wireless network. The available networks are then displayed in a site
survey, and your computer can select a network. By clicking Disable, you
can block this random search, and set the computer's SSID to a specific
network (for example, WLAN). This increases network security. If you
decide to enable SSID Broadcast, ensure that you know the name of your
network first.
5 Select whether your Router will operate in 11b mode only, 11g mode
only, or mixed 11b and 11g from the Wireless Mode drop-down menu.
6 Click Apply.
Wireless Settings
Encryption
45
This feature prevents any non-authorized party from reading or changing
your data over the wireless network.
Figure 33 Encryption Screen
Select the wireless security mode that you want to use from the
drop-down menu, and click Apply. There are five selections:
■
Disabled (see page 45)
■
64-bit WEP (see page 46)
■
128-bit WEP (see page 47)
■
WPA-PSK (no server) (see page 48)
■
WPA (with RADIUS Server) (see page 49)
Disabled
In this mode, wireless transmissions will not be encrypted, and will be
visible to everyone. However, when setting up or debugging wireless
networks, it is often useful to use this security mode.
46
CHAPTER 5: CONFIGURING THE ROUTER
64-bit WEP
WEP is the basic mechanism to transmit your data securely over the
wireless network. Matching encryption keys must be setup on your
Router and wireless client devices to use WEP.
Figure 34 64-bit WEP Screen
To enable 64-bit WEP:
1 You can enter the 64-bit WEP key manually:
■
enter the WEP key as 5 pairs of hex digits (0-9, A-F).
Or you can generate the 64-bit WEP key automatically:
■
enter a memorable passphrase in the Passphrase box, and then
click Generate to generate the hex keys from the passphrase.
For 64-bit WEP, you can enter up to four keys, in the fields Key 1 to Key 4.
The radio button on the left hand side selects the key that is used in
transmitting data.
Note that all four WEP keys on each device in the wireless network must
be identical.
2 Click Apply.
Wireless Settings
47
128-bit WEP
WEP is the basic mechanism to transmit your data securely over the
wireless network. Matching encryption keys must be set up on your
Router and wireless client devices to use WEP.
Figure 35 128-bit WEP Screen
To enable 128-bit WEP:
1 You can enter the 128-bit WEP key manually:
■
enter your WEP key as 13 pairs of hex digits (0-9, A-F).
Or you can generate the 128-bit WEP key automatically:
■
enter a memorable passphrase in the Passphrase box, and then
click Generate to generate the hex keys from the passphrase.
The WEP keys on each device on the wireless network must be identical.
In 128-bit WEP mode, only one WEP key can be specified.
2 Click Apply.
48
CHAPTER 5: CONFIGURING THE ROUTER
WPA-PSK (no server)
WPA (Wi-Fi Protected Access) provides dynamic key changes and
constitutes the best security solution. If your network does not have a
RADIUS server. Select the no server option.
Figure 36 WPA-PSK (no server) Screen
1 Select WPA-PSK (no server) from the WPA drop-down menu.
2 Select WPA mode from the drop-down menu, three modes are
supported: WPA, WPA2, and Mixed mode.
3 Select Encryption technique from the drop-down menu, four options are
available: TKIP, AES, Auto for WPA AES for WPA2, and AES for both WPA
and WPA2.
4 Enter the pre-shared key in the Pre-shared Key (PSK) field. The pre-shared
key is a password, in the form of a word, phrase or series of letters and
numbers. The key must be between 8 and 63 characters long and can
include spaces and symbols. Each client that connects to the network
must use the same key.
5 If you want the key that you enter to be shown on the screen as a series
of asterisks (*), then check the Hide PSK checkbox.
6 Click Apply.
Wireless Settings
49
WPA (with RADIUS Server)
WPA (Wi-Fi Protected Access) provides dynamic key changes and
constitutes the best security solution. This function requires that a
RADIUS server is running on the network.
Figure 37 WPA (with RADIUS Server) Screen
1 Select WPA with RADIUS server from the Security Mode drop-down
menu.
2 Select WPA mode from the drop-down menu, three modes are
supported: WPA, WPA2, and Mixed mode.
3 Select Encryption technique from the drop-down menu, four options are
available: TKIP, AES, Auto for WPA AES for WPA2, and AES for both WPA
and WPA2.
4 Enter the IP address of the RADIUS server on your network into the
RADIUS Server field.
5 Enter the port number that the RADIUS server is operating on in the
RADIUS Port field.
6 Enter the key for the RADIUS server in the RADIUS Key field.
7 By default, the WPA keys are changed every hour, but if you want to
change this setting, you can do so by specifying the required time in the
Re-key Interval field.
8 Click Apply.
50
CHAPTER 5: CONFIGURING THE ROUTER
Connection Control
This feature is used to filter the clients based on their MAC addresses.
Check the Enable MAC Address Filtering checkbox, the Connection
Control screen will appear.
Figure 38 Connection Control Screen
There are two options available in the Access rule for registered MAC
address field:
■
if you click Allow, this means only the MAC addresses registered here
in the list will be allowed to access the Router via wireless link.
■
if you click Deny, this means the registered MAC addresses will not be
able to access the Router via wireless link.
Use the MAC Address Filtering List to quickly copy the MAC addresses of
the current wireless clients into the list table. You can define up to 32
MAC addresses to the list.
You can click Clear to delete the current entry in the list.
Wireless Settings
Client List
51
You can view the list of all wireless clients that are connected to the
Router.
Figure 39 Client List Screen
Click Refresh to update the list.
WDS Settings
The Router supports WDS (Wireless Distribution System). WDS enables
one or more Access Points to rebroadcast received signals to extend
range and reach, though this can affect the overall throughput of data.
Figure 40 Wireless WDS Settings Screen
1 Check the Enable WDS Function checkbox.
2 To refresh the list of available access points, click Rescan Wireless
Networking.
52
CHAPTER 5: CONFIGURING THE ROUTER
3 Click Add to add the MAC address of the AP to the list, the add WDS
screen will appear (refer to Figure 41).
Figure 41 Add WDS screen
Enter the MAC address(es) of one or more access points in the AP MAC
Address table, and click Apply.
Advance
The Advance screen allows you to configure detailed settings for your
wireless connection.
Figure 42 Wireless Advanced Setting screen
There are six parameters that you can configure:
■
Beacon Interval: this represents the amount of time between beacon
transmissions.
Wireless Settings
Profile
53
■
DTIM Interval: A DTIM (Delivery Traffic Indication Message) is a
countdown mechanism used to inform your wireless clients of the
next window for listening to broadcast and multicast messages.
■
Fragmentation Threshold: this is the maximum size for directed data
packets transmitted. The use of fragmentation can increase the
reliability of frame transmissions. Because of sending smaller frames,
collisions are much less likely to occur.
■
RTS Threshold: RTS stands for Request to Send, this parameter
controls what size data packet the low level RF protocol issues to an
RTS packet.
■
CTS Protection Mode: CTS stands for Clear to Send. CTS Protection
Mode boosts the Router’s ability to intercept 802.11b/ 802.11g
transmissions. Conversely, CTS Protection Mode decreases
performance. Leave this feature disabled unless you encounter severe
communication difficulties between the Router and your wireless
clients.
■
WMM Mode: Wireless Multimedia (WMM) mode, which supports
devices that meet the 802.11E QBSS standard.
This feature is used to quickly set up the configuration parameters and
save them into one profile for easy connection.
Figure 43 Profile Screen
54
CHAPTER 5: CONFIGURING THE ROUTER
Internet Settings
ATM PVC
You can configure the settings for your DSL connection.
This feature is used to configure the parameters for your DSL connection.
The information necessary to complete these screens should be obtained
from your ISP. Check with your ISP first to find out what type of
connection you should choose.
Figure 44 ATM PVC Screen
You should see the first entry already contains information that’s been
configured using the Wizard in the initial setup. If you want to change
that information or set up other connection, click Edit.
There are six options available for the DSL connection mode:
■
PPPoE — PPP over Ethernet, providing routing for multiple PCs (see
page 55)
■
PPPoA — PPP over ATM, providing routing for multiple PCs (see
page 57)
■
Bridge Mode — RFC1483 Bridged Mode, for single PCs only (see
page 59)
■
Routing Mode over ATM — RFC1483 Routed Mode, for multiple PCs
(see page 61)
■
Dynamic/Fixed IP in 1483 Bridge Mode (for multiple PCs) (see page 63)
■
Disable — To disable the Internet connection function (see page 64)
Click Edit to set the detailed settings.
Internet Settings
55
PPPoE
PPP over Ethernet, provides routing for multiple PCs. To configure this
function correctly, you should obtain the information from your ISP.
Figure 45 PPPoE Settings Screen
1 Select PPPoE from the Protocol drop-down menu.
2 Enter the IP address and Subnet Mask information provided by your ISP
into the IP address and Subnet Mask fields.
3 Enter the user name assigned to you by your ISP in the Username field.
And enter the password assigned to you by your ISP in the Password field.
Re-enter your password in the Confirm Password field.
4 Select the connection type from the Connect Type drop-down menu.
■
■
■
■
Always Connected means that Internet connection to your ISP is
always on.
Auto - Triggered by Traffic means your Router will automatically
connect to your ISP every time a PC needs to access the Internet.
Manual - Start in Disconnected means that after re-booting the
Router, the Internet connection will need to be re-established
manually by the user.
Manual - Start in Connected means that after re-booting the
Router, it will automatically establish a connection to your ISP.
56
CHAPTER 5: CONFIGURING THE ROUTER
■
Manual - Start in Last State means that after re-booting the Router,
the Internet connection will stay in the previous condition before
the reboot.
5 If you want your Router to automatically disconnect from the Internet
after a period of inactivity, specify a time in the Idle Time (Minutes) field.
(Enter a value of 0 to disable this timeout).
6 Enter the Maximum Transmission Unit (MTU) value supplied by your ISP. If
you do not know this, leave it at the default value.
7 The Router supports the IP Control Protocol (IPCP) Subnet Mask Support
feature, check the IPCP subnet checkbox to enable it.
8 To use the IPCP Subnet Mask Support for the DHCP clients, check the
IPCP Subnet Populate DHCP Server checkbox.
9 Enter the VPI and VCI values provided by your ISP in the VPI and VCI
fields. You can click Auto Search to automatically find out this
information.
10 Select the encapsulation type (LLC or VC MUX) in the Encapsulation field.
This information should be provided to you by your ISP.
11 Select the type of Quality of Service (CBR, UBR or VBR) in the QoS field.
■
■
■
CBR (constant bit rate): the CBR service class is intended for
real-time applications, for example, those requiring tightly
constrained delay and delay variation, such as voice and video
applications. The consistent availability of a fixed quantity of
bandwidth is considered appropriate for CBR service.
VBR (variable bit rate): QoS class defined by the ATM Forum for
ATM networks. VBR is subdivided into a real time (RT) class and
non-real time (NRT) class. VBR (RT) is used for connections in which
there is a fixed timing relationship between samples. VBR (NRT) is
used for connections in which there is no fixed timing relationship
between samples, but that still need a guaranteed QoS. Compare
with ABR, CBR, and UBR.
UBR (unspecified bit rate): the UBR service class is intended for
delay-tolerant or non-real-time applications, for example, those
which do not require tightly constrained delay and delay variation,
such as traditional computer communications applications. The
UBR service may be considered as "best effort service".
12 Enter the PCR/SCR/MBS values. This information should be provided to
you by your ISP.
Internet Settings
57
13 Click Apply.
PPPoA
PPP over ATM, this is a popular choice among European DSL providers. To
configure this function correctly, you should obtain the information from
your ISP.
Figure 46 PPPoA Settings Screen
1 Select PPPoA from the Protocol drop-down menu.
2 IP assigned by ISP:
■
■
Select Yes, if your ISP assigns your IP address dynamically, and
proceed to next step.
If your ISP has assigned you a fixed or static IP address, select No in
the IP assigned by ISP field.
Then enter the IP address and Subnet Mask information provided
by your ISP into the IP address and Subnet Mask fields.
3 Enter the user name assigned to you by your ISP in the Username field.
And enter the password assigned to you by your ISP in the Password field.
Re-enter your password in the Confirm Password field.
58
CHAPTER 5: CONFIGURING THE ROUTER
4 Select the connection type from the Connect Type drop-down menu.
■
■
■
■
■
Always Connected means the Internet connection to your ISP is
always on.
Auto - Triggered by Traffic means your Router will automatically
connect to your ISP every time a PC needs to access the Internet.
Manual - Start in Disconnected means that after re-booting the
Router, the Internet connection will need to be re-established
manually by the user.
Manual - Start in Connected means that after re-booting the
Router, it will automatically establish connection to your ISP.
Manual - Start in Last State means that after re-booting the Router,
the Internet connection will stay in the previous condition before
the reboot.
5 If you want your Router to automatically disconnect from the Internet
after a period of inactivity, specify a time in the Idle Time (Minutes) field.
(Enter a value of 0 to disable this timeout).
6 Enter the MTU value supplied by your ISP. If you do not know this, leave it
at the default value.
7 The Router supports the IP Control Protocol (IPCP) Subnet Mask Support
feature, check the IPCP subnet checkbox to enable it.
8 To use the IPCP Subnet Mask Support for the DHCP clients, check the
IPCP Subnet Populate DHCP Server checkbox.
9 Enter the VPI and VCI parameters provided to you by your ISP in the VPI
and VCI fields. You can click Auto Search to automatically find out this
information.
10 Select the encapsulation type (LLC or VC MUX) in the Encapsulation Type
field. This information is provided to you by your ISP.
11 Select the type of Quality of Service (CBR, UBR or VBR) in the QoS field.
■
■
CBR (constant bit rate): the CBR service class is intended for
real-time applications, for example, those requiring tightly
constrained delay and delay variation, such as voice and video
applications. The consistent availability of a fixed quantity of
bandwidth is considered appropriate for CBR service.
VBR (variable bit rate): QoS class defined by the ATM Forum for
ATM networks. VBR is subdivided into a real time (RT) class and
non-real time (NRT) class. VBR (RT) is used for connections in which
there is a fixed timing relationship between samples. VBR (NRT) is
Internet Settings
59
used for connections in which there is no fixed timing relationship
between samples, but that still need a guaranteed QoS. Compare
with ABR, CBR, and UBR.
■
UBR (unspecified bit rate): the UBR service class is intended for
delay-tolerant or non-real-time applications, for example, those
which do not require tightly constrained delay and delay variation,
such as traditional computer communications applications. The
UBR service may be considered as "best effort service".
12 Enter the PCR/SCR/MBS values.
13 Click Apply.
Bridge Mode
If your ISP limits access to the Internet to specific computers, this means
that traffic to/from these computers only will be forwarded. In this case,
Bridge Mode is used to connect to the ISP. The ISP will generally give one
Internet account and limit only one computer to access the Internet.
Check with your ISP to determine if this mode is used for your DSL
connection. To configure the settings correctly, you should obtain the
information from your ISP.
Figure 47 Bridge Mode Screen
1 Select Bridge Mode from the Protocol drop-down menu.
2 Enter the VPI and VCI parameters in the VPI and VCI fields. You can click
Auto Search to automatically find out this information.
3 Select the encapsulation type (LLC or VC MUX) in the Encapsulation Type
field. This information should be provided to you by your ISP.
60
CHAPTER 5: CONFIGURING THE ROUTER
4 Select the type of Quality of Service that you want from the QoS Class
drop-down menu.
■
■
■
CBR (constant bit rate): the CBR service class is intended for
real-time applications, for example, those requiring tightly
constrained delay and delay variation, such as voice and video
applications. The consistent availability of a fixed quantity of
bandwidth is considered appropriate for CBR service.
VBR (variable bit rate): QoS class defined by the ATM Forum for
ATM networks. VBR is subdivided into a real time (RT) class and
non-real time (NRT) class. VBR (RT) is used for connections in which
there is a fixed timing relationship between samples. VBR (NRT) is
used for connections in which there is no fixed timing relationship
between samples, but that still need a guaranteed QoS. Compare
with ABR, CBR, and UBR.
UBR (unspecified bit rate): the UBR service class is intended for
delay-tolerant or non-real-time applications, for example, those
which do not require tightly constrained delay and delay variation,
such as traditional computer communications applications. The
UBR service may be considered as "best effort service".
5 Enter the PCR/SCR/MBS values.
6 Click Apply.
Internet Settings
61
Routing Mode over ATM (RFC 1483 Routed Mode)
This mode is commonly used with either dynamic or static IP addressing.
In this mode the WAN ADSL port will be configured with an IP address
provided by the ISP. To configure the settings correctly, you should obtain
the information on this screen from your ISP.
Figure 48 Routing Mode over ATM Screen
1 Select Routing Mode over ATM from the Protocol drop-down menu.
2 Enter the IP address, Subnet Mask and Default Gateway information
provided by your ISP into the IP address, Subnet Mask and Default
Gateway fields.
3 Check the DNS Automatic from ISP checkbox, if your ISP automatically
configure DNS. However, if you need to configure DNS manually, enter
the IP address in the DNS Address field. (If your ISP uses a secondary DNS,
enter the IP address in the Secondary DNS Address field).
4 Enter the host name in the Host Name filed.
5 If your ISP uses DHCP to automatically assign IP addresses, check the
DHCP Client checkbox.
6 Enter the VPI and VCI parameters provided to you by your ISP in the VPI
and VCI fields. You can click Auto Search to automatically find out this
information.
7 Select the encapsulation type (LLC or VC MUX) in the Encapsulation field.
This information should be provided to you by your ISP.
62
CHAPTER 5: CONFIGURING THE ROUTER
8 Select the type of Quality of Service that you want from the QoS Class
drop-down menu.
■
■
■
CBR (constant bit rate): the CBR service class is intended for
real-time applications, for example, those requiring tightly
constrained delay and delay variation, such as voice and video
applications. The consistent availability of a fixed quantity of
bandwidth is considered appropriate for CBR service.
VBR (variable bit rate): QoS class defined by the ATM Forum for
ATM networks. VBR is subdivided into a real time (RT) class and
non-real time (NRT) class. VBR (RT) is used for connections in which
there is a fixed timing relationship between samples. VBR (NRT) is
used for connections in which there is no fixed timing relationship
between samples, but that still need a guaranteed QoS. Compare
with ABR, CBR, and UBR.
UBR (unspecified bit rate): the UBR service class is intended for
delay-tolerant or non-real-time applications, for example, those
which do not require tightly constrained delay and delay variation,
such as traditional computer communications applications. The
UBR service may be considered as "best effort service".
9 Enter the PCR/SCR/MBS values.
10 Click Apply.
Internet Settings
63
Dynamic/Fixed IP in 1483 Bridge Mode (For Multiple PCs)
In this example, the ISP uses fixed/dynamic IP to provide the Internet
connection. To configure this function correctly, you should obtain the
information on this screen from your ISP.
Figure 49 Dynamic/Fixed IP for Bridge Mode Screen
1 Select Dynamic/Fixed IP in 1483 Bridge Mode from the Protocol
drop-down menu.
2 Enter the IP address, Subnet Mask and Default Gateway information
provided by your ISP into the IP address, Subnet Mask and Default
Gateway fields.
3 Check the DNS Automatic from ISP checkbox, if your ISP automatically
configures DNS. However, if you need to configure DNS manually, enter
the IP address in the DNS Address field. (If your ISP uses a secondary DNS,
enter the IP address in the Secondary DNS Address field).
4 Enter the host name in the Host Name field.
5 If your ISP uses DHCP to automatically assign IP addresses, check the
DHCP Client checkbox.
6 Enter the VPI and VCI parameters provided by your ISP in the VPI and VCI
fields. You can click Auto Search to automatically find out this
information.
7 Select the encapsulation type (LLC or VC MUX) in the Encapsulation field.
This information will have been provided to you by your ISP.
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CHAPTER 5: CONFIGURING THE ROUTER
8 Select the type of Quality of Service that you want from the QoS Class
drop-down menu.
■
■
■
CBR (constant bit rate): the CBR service class is intended for
real-time applications, for example, those requiring tightly
constrained delay and delay variation, such as voice and video
applications. The consistent availability of a fixed quantity of
bandwidth is considered appropriate for CBR service.
VBR (variable bit rate): QoS class defined by the ATM Forum for
ATM networks. VBR is subdivided into a real time (RT) class and
non-real time (NRT) class. VBR (RT) is used for connections in which
there is a fixed timing relationship between samples. VBR (NRT) is
used for connections in which there is no fixed timing relationship
between samples, but that still need a guaranteed QoS. Compare
with ABR, CBR, and UBR.
UBR (unspecified bit rate): the UBR service class is intended for
delay-tolerant or non-real-time applications, for example, those
which do not require tightly constrained delay and delay variation,
such as traditional computer communications applications. The
UBR service may be considered as "best effort service".
9 Enter the PCR/SCR/MBS values.
10 Click Apply.
Disable
Selecting this option means that you do not want your Router to connect
to the Internet.
Figure 50 Disable Internet Connection Screen
Internet Settings
DNS
65
Domain Name Service (or Server) is an Internet service that translates
domain names into IP addresses. Because domain names are alphabetic,
they're easier to remember. The Internet however, is really based on IP
addresses. Every time you use a domain name, a DNS service must
translate the name into the corresponding IP address. For example, the
domain name www.example.com might translate to 198.105.232.4.
Check with your ISP for information on this screen.
Figure 51 DNS Screen
If the DNS information is automatically provided by your ISP every time
you connect to it, check the Automatic from ISP checkbox.
If your ISP provided you with specific DNS addresses to use, enter them
into the appropriate fields on this screen and click Apply.
Many ISPs do not require you to enter this information into the Router. If
you are using a Static IP connection type, you may need to enter a
specific DNS address and secondary DNS address for your connection to
work properly. If your connection type is Dynamic, PPPoA or PPPoE, it is
likely that you do not have to enter a DNS address.
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CHAPTER 5: CONFIGURING THE ROUTER
Hostname & Clone
MAC address
To configure the Hostname and Clone MAC Address information for your
Router, select Internet Settings, then go to the Clone MAC address tab.
The Hostname and MAC Address screen displays.
Figure 52 Hostname and MAC Address Screen
1 Some ISPs require a host name. If your ISP has this requirement, enter the
host name in the Host Name field.
2 Three different ways to configure the WAN MAC Address:
■
If your ISP requires an assigned MAC address, enter the values in the
WAN MAC address field.
or
■
If the computer you are now using is the one that was previously
connected directly to the cable modem, click Clone.
or
■
To reset the MAC Address to the default, click Reset MAC.
3 Click Apply to save the settings.
Firewall
Firewall
67
From these screens, you can configure settings for the firewall.
Your Router is equipped with a firewall that will protect your network
from a wide array of common hacker attacks including Ping of Death
(PoD) and Denial of Service (DoS) attacks. You can turn the firewall
function off if needed. Turning off the firewall protection will not leave
your network completely vulnerable to hacker attacks, but 3Com
recommends that you leave the firewall enabled whenever possible.
SPI
Stateful Packet Inspection (SPI) - The Intrusion Detection Feature of the
Router limits access for incoming traffic at the WAN port.
This feature is called a "stateful" packet inspection, because it examines
the contents of the packet to determine the state of the communications;
i.e., it ensures that the stated destination computer has previously
requested the current communication. This is a way of ensuring that all
communications are initiated by the recipient computer and are taking
place only with sources that are known and trusted from previous
interactions. In addition to being more rigorous in their inspection of
packets, stateful inspection firewalls also close off ports until connection
to the specific port is requested.
Figure 53 Firewall Screen
To enable the firewall function:
1 Select the level of protection (High, Medium, or Low) that you desire from
the Firewall level drop-down menu.
2 Click Apply.
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CHAPTER 5: CONFIGURING THE ROUTER
For low and medium levels of firewall protection, refer to Figure 54.
For high level of firewall protection, refer to Figure 55.
Figure 54 Low and Medium Level Firewall Protection Screen
When abnormal network activity occurs, an alerting email will be sent out
to you. Enter the following information to receive the email:
■
Your E-mail Address
■
SMTP Server Address
■
User name
■
Password
Firewall
69
Figure 55 High Level Firewall Protection Screen
If you select high level of protection, you will need to configure additional
parameters for the firewall.
■
Fragmentation half-open wait - Configures the number of seconds
that a packet state structure remains active. When the timeout value
expires, the Router drops the un-assembled packet, freeing that
structure for use by another packet.
■
TCP SYN wait - Defines how long the software will wait for a TCP
session to synchronize before dropping the session.
■
TCP FIN wait - Specifies how long a TCP session will be maintained
after the firewall detects a FIN packet.
■
TCP connection idle timeout - The length of time for which a TCP
session will be managed if there is no activity.
■
UDP session idle timeout - The length of time for which a UDP session
will be managed if there is no activity.
■
H.323 data channel idle timeout - The length of time for which an
H.323 session will be managed if there is no activity.
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CHAPTER 5: CONFIGURING THE ROUTER
■
Total incomplete TCP/UDP sessions HIGH - Defines the rate of new
unestablished sessions that will cause the software to start deleting
half-open sessions.
■
Total incomplete TCP/UDP sessions LOW - Defines the rate of new
unestablished sessions that will cause the software to stop deleting
half-open sessions.
■
Incomplete TCP/UDP sessions (per min) HIGH - Maximum number of
allowed incomplete TCP/UDP sessions per minute.
■
Incomplete TCP/UDP sessions (per min) LOW - Minimum number of
allowed incomplete TCP/UDP sessions per minute.
■
Maximum incomplete TCP/UDP sessions number from same host Maximum number of incomplete TCP/UDP sessions from the same
host.
■
Incomplete TCP/UDP sessions detect sensitive time period - Length of
time before an incomplete TCP/UDP session is detected as incomplete.
■
Maximum half-open fragmentation packet number from same host Maximum number of half-open fragmentation packets from the same
host.
■
Half-open fragmentation detect sensitive time period - Length of time
before a half-open fragmentation session is detected as half-open.
■
Flooding cracker block time - Length of time from detecting a flood
attack to blocking the attack.
Firewall
Special Applications
71
Special Applications let you choose specific ports to be open for specific
applications to work properly with the Network Address Translation (NAT)
feature of the Router.
Figure 56 Special Applications Screen
A list of popular applications has been included to choose from. Select
your application from the Popular Applications drop-down menu. Then
select the row that you want to copy the settings to from the Copy To
drop-down menu, and click Copy To. The settings will be transferred to
the row that you specified. Click Apply to save the setting for that
application.
If your application is not listed, you will need to check with the
application vendor to determine which ports need to be configured. You
can manually enter the port information into the Router.
To manually enter the port information:
1 Specify the trigger port (the one used by the application when it is
initialized) in the Trigger Port column, and specify whether the trigger is
TCP or UDP.
2 Specify the Public Ports used by the application, that will need to be
opened up in the firewall for the application to work properly. Also
specify whether these ports are TCP or UDP.
3 Check the Enabled checkbox, then click Apply.
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CHAPTER 5: CONFIGURING THE ROUTER
Virtual Servers
The Virtual servers feature allows you to route external (Internet) calls for
services such as a web server (port 80), FTP server (Port 21), or other
applications through your Router to your internal network. Since your
internal computers are protected by a firewall, machines from the
Internet cannot get to them because they cannot be 'seen'.
If you need to configure the Virtual Server function for a specific
application, you will need to contact the application vendor to find out
which port settings you need.
The maximum number of virtual servers that can be configured is 20.
Figure 57 Virtual Servers Screen
A list of popular servers has been included to choose from. Select the
server from the Popular servers drop-down menu. Then click Add, your
selection will be added to the table.
If the server that you want to use is not listed in the drop-down menu,
you can manually add the virtual server to the table.
To manually configure your virtual servers:
1 Enter the IP address, and the description in the spaces provided for the
internal machine.
2 Select the protocol type (TCP, UDP, or both TCP and UDP) from the
drop-down menu.
3 Specify the public port that will be seen by clients on the Internet, and the
LAN port which the traffic will be routed to.
Firewall
73
4 You can enable or disable each Virtual Server entry by checking or
unchecking the appropriate Enabled checkbox.
5 Click Apply to save the changes for each Virtual Server entry.
DMZ
If you have a client PC that cannot run an Internet application properly
from behind the firewall, you can open the client up to unrestricted
two-way Internet access. This may be necessary if the NAT feature is
causing problems with an application such as a game or video
conferencing application.
Figure 58 DMZ Screen
Use this feature on a temporary basis. The computer in the DMZ is not
protected from hacker attacks.
To put a computer in the DMZ:
1 Check the Enable 1-to-1 NAT checkbox.
2 Enter the last digits of the LAN IP address in the Client PC IP Address field.
Enter the IP address (if known) that will be accessing the DMZ PC into the
Public IP Address field, so that only the computer on the Internet at this
address can access the DMZ PC without firewall protection. If the IP
address is not known, or if more than one PC on the Internet will need to
access the DMZ PC, then set the Public IP Address to 0.0.0.0.
3 Click Apply.
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CHAPTER 5: CONFIGURING THE ROUTER
Schedule Rule
The Router can be configured to restrict access to the Internet, email or
other network services at specific days and times. Define the time in this
screen, and define the rules in the PC Privileges screen (see page 75).
Figure 59 Schedule Rule Screen
1 Click Add Rule to add a schedule rule (a screen similar to Figure 60 will
appear).
Figure 60 Add Schedule Rule Screen
2 Enter a name and comment for the schedule rule in the Name and
Comment fields.
3 Specify the schedule rules for the required days and times - note that all
times should be in 24 hour format.
4 Click Apply.
Firewall
PC Privileges
75
The Router can be configured to restrict access to the Internet, email or
other network services at specific days and times. Restriction can be set
for a single computer, a range of computers, or multiple computers.
You can define the traffic type permitted or not-permitted to the Internet.
Figure 61 PC Privileges Screen
To edit or delete specific existing filtering rules, click on Edit or Delete for
the appropriate filtering rule.
To configure a new filtering rule:
1 Check the Enable Filtering Function checkbox.
2 Click Add PC (a screen similar to Figure 62 will appear).
Figure 62 PC Privileges Add PC Screen
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CHAPTER 5: CONFIGURING THE ROUTER
3 Enter a description in the Client PC Description field, and the IP address or
IP address range into the Client PC IP Address fields.
4 To bypass the URL Filter and Content Filter, check the corresponding
Bypass checkbox.
If you check the two options: Bypass URL Filter, and Bypass Content Filter,
then the Web sites and keywords defined in this screen will not be filtered
out.
5 Select the services to be blocked. A list of popular services is given on this
screen, to block a particular service, check the appropriate Blocking
checkbox.
If the service to be restricted is not listed here, you can enter a custom
range of ports at the bottom of the screen, under User Defined Blocked
Ports.
6 If you want the restriction to apply only at certain times, select the
schedule rule to apply from the Schedule Rule drop-down menu.
Note that schedule rules are defined on the Schedule Rules screen
(see page 74).
7 Click Apply to add the settings.
Firewall
URL Filter
77
To configure the URL filter feature, use the table on the URL Filter screen
to specify the Web sites (www.somesite.com) and/or keywords you want
to filter on your network.
For example, entering a keyword of xxx would block access to any URL
that contains the string xxx.
Figure 63 URL Filter Screen
1 Check the Enable URL Filtering Function checkbox.
2 Enter the URL address or keywords in the URL/Keyword field.
3 Select Denied or Allowed from the Mode drop-down menu.
To complete this configuration, you will need to create or modify the
filtering rule in the PC Privileges screen (see page 75).
From the PC Privileges Add PC screen (Figure 62), if you check the two
options: Bypass URL Filter, and Bypass Content Filter, then the Web sites
and keywords defined in this screen will not be filtered out.
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CHAPTER 5: CONFIGURING THE ROUTER
Content Filter
You can use the list on the Content Filter screen to specify the type of
content that you want to filter out.
The Router comes with a 14-day free trial of the 3Com Content Filter
Service (3CSBCFS). To activate the 14-day free trial of the service, you
must first register your Router at www.3com.com. To continue using the
service after the trial period, you must purchase the 12-month
subscription license.
Figure 64 Content Filter Screen
To configure the Content Filter feature:
1 Check the Enable Content Filtering Function checkbox.
2 Select the server that you want to use from the Content Filter Server
drop-down menu. If the server you want to use is not listed, enter the
server address manually.
3 Define the time in the Server Timeout field (the default value is 3000ms).
If the Content Filter Server does not respond within this time period, the
Router will use the default content filter rule. The default rule is either
Allow or Deny None of the above (Uncategorized URL). You can configure
this rule at the bottom of the Content Filter screen.
Firewall
79
4 If you are not sure about your subscription status, click CHECK in
Subscription Filtering Status to find out if you have a current, valid
subscription.
5 Subjects are listed under Core Categories and Productivity Categories.
You can define what content should be viewed/blocked using the
Allow/Deny option. The Deny option is used to filter out the content that
contains the specific subject matter. Content with a specific subject
matter will not be filtered out if the Allow option is checked.
6 Click Apply for the changes to take effect.
Server Control
The Router can be configured to restrict access to the Internet, email or
other network services at specific days and times. Restriction can be set
for the servers.
You can define the traffic type permitted or not-permitted to the Internet.
Figure 65 Server Control Screen
In the Service Filtering Mode, select one option:
■
Denied except listed below.
■
All Allowed.
Click Add to add a new entry to the table (see Figure 66).
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CHAPTER 5: CONFIGURING THE ROUTER
Figure 66 Server Control Add Server Screen
1 Enter a description in the Server Description field, and the IP address or IP
address range into the Server IP Address fields.
2 Select the services that will be allowed. A list of popular services is given
on this screen, to unblock a particular service, check the appropriate
Allowed checkbox.
If the service to be allowed is not listed here, you can enter a custom
range of ports at the bottom of the screen, under User Defined Service
Ports.
3 Select the time that the rule will be enforced from the Scheduling Rule
drop-down menu.
4 Click Apply to save the settings.
Quality of Service
Quality of Service
QoS Settings
81
The QoS (Quality of Service) function allows you to differentiate your
network traffic and provide it with high-priority forwarding service.
The bandwidth gap between LAN and WAN may significantly degrade
performance of critical network applications, such as VoIP, gaming, and
VPN. This QoS function allows you to classify traffic of applications and
provides them with differentiated services (Diffserv).
Figure 67 QoS Settings Screen
Define the minimum percentage of bandwidth for each type of traffic.
Traffic Mapping
You can define up to 16 rules to classify traffic into Diffserv forwarding
groups and outgoing VCs in this screen.
Figure 68 Traffic Mapping screen
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CHAPTER 5: CONFIGURING THE ROUTER
Click Add to add a new traffic class rule (see Figure 69).
Figure 69 Add New Traffic Class Rule Screen
Traffic Statistics
This screen shows the WAN outbound traffic statistics of all the Diffserv
forwarding groups in the last 12 hours. This screen automatically updates
every 5 minutes.
Figure 70 Traffic Statistics Screen
Advanced
Advanced
83
From the Advanced screen, you can configure:
Security
■
Security
■
Static Routes
■
RIP
■
DDNS
■
SNMP
■
Syslog
■
Proxy Arp
Use the Security screen to set the advanced security settings for the
Router.
Figure 71 Security Screen
■
NAT — Before you enable NAT (Network Address Translation), make
sure you have changed the administrator password. NAT is the
method by which the Router shares the single IP address assigned by
your ISP with the computers on your network.
This function should only be disabled by advanced users, and if your
ISP assigns you multiple IP addresses or you need NAT disabled for an
advanced system configuration. If you have a single IP address and
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CHAPTER 5: CONFIGURING THE ROUTER
you turn NAT off, the computers on your network will not be able to
access the Internet. Other problems may also occur.
■
IPSEC NAT-T Pass-through — NAT-T (NAT Traversal) is an Internet
Draft proposed to IETF in order to help the problems associated
with passing IPsec traffic through NAT Routers. For NAT-T to work,
both ends of the connection need to support this function. Ensure
that you select NAT-T only if it is needed as it will reduce LAN-WAN
throughput. This Router supports NAT-T draft 2 implementation.
■
Universal Plug and Play — This is a technology that offers seamless
operation of voice messaging, video messaging, games, and other
applications that are Universal Plug and Play compliant. Some
applications require the Router's firewall to be configured in a specific
way to operate properly. This usually requires opening TCP and UDP
ports and in some instances setting trigger ports. An application that
is Universal Plug and Play compliant has the ability to communicate
with the Router, basically "telling" the Router which way it needs the
firewall configured. The Router ships with the Universal Plug and Play
feature disabled. If you are using any applications that are Universal
Plug and Play compliant, and want to take advantage of the Universal
Plug and Play features, you can enable this feature. Simply check the
Enable Universal Plug and Play checkbox. Click Apply to save the
change.
■
WAN Ping Blocking — Computer hackers use what is known as
"Pinging" to find potential victims on the Internet. By pinging a
specific IP address and receiving a response from the IP address, a
hacker can determine that something of interest might be there.
The Router can be set up so it will not respond to an Internet Control
Message Protocol (ICMP) Ping from the outside. This heightens the
level of security of your Router. To turn off the ping response, check
Block ICMP Ping and click Apply; the Router will not respond to an
ICMP ping from the Internet.
■
MSS Clamping — You might not be able to browse some Web sites or
to send email messages that contain attachments from an Internet
Connection Sharing client computer if your outbound connection is
through a Windows XP-based Internet Connection Sharing host
computer that uses Point-to-Point Protocol over Ethernet (PPPoE).
This issue may occur if the Windows XP-based Internet Connection
Sharing host computer uses a smaller Maximum Transmission Unit
(MTU) size on the WAN interface (the PPPoE connection to the
Internet) than it uses on the private interface (the Ethernet connection
to the Internet Connection Sharing client). If a packet is larger than
Advanced
85
the MTU size on the WAN interface, the client sends an Internet
Control Message Protocol (ICMP) error to the external server to
request that the server negotiate the TCP Maximum Segment Size
(MSS). However, this message may be blocked by some firewalls.
When this occurs, the packet is dropped. To allow the message to go
through the firewall, enable MSS Clamping. MSS clamping will make
Internet Connection Sharing set the MSS value low enough to match
the external interface.
■
Remote Administration — This feature allows you to make changes to
your Router’s settings from anywhere on the Internet. Four options are
available:
■
■
■
■
If you do not want to use this feature, select Disable Remote
Administration.
Select Enable administration from a single Internet Host, and enter
the IP address, to allow only one computer to use the remote
administration. This is more secure, as only the specified IP address
will be able to manage the Router.
Select Enable administration from a whole Subnet Internet Host,
and enter the IP address and subnet mask, to allow PCs from that
specific subnet group to use the remote administration.
Select Enable administration from any Internet Host, this allows
any computer to access the Router remotely.
Before you enable this function, ensure that you have set the
Administration Password.
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CHAPTER 5: CONFIGURING THE ROUTER
Static Routes
You can configure static routes in this screen.
To add a static route entry to the table, click Add.
To change an existing entry, click Edit. To delete an entry, click Delete.
Figure 72 Static Routes Screen
This screen shows a list of current static route entries. For each entry, the
following information is displayed:
■
Index — the index of the entry.
■
Network Address — the network address of the route.
■
Subnet Mask — the subnet mask of the route.
A network address of 0.0.0.0 and a subnet mask of 0.0.0.0 indicates the
default route.
■
Gateway — the router used to route data to the network specified by
the network address.
After you have finished making changes to the table, click Apply.
Advanced
RIP
87
RIP (Routing Information Protocol) - RIP allows the network administrator
to set up routing information on one RIP-enabled device and send that
information to all RIP-enabled devices on the network.
Figure 73 RIP Parameter Screen
You can set up RIP independently on both LAN and WAN interfaces.
1 Check the Enable RIP checkbox.
2 Check the Enable Auto summary checkbox. Auto summarization sends
simplified routing data to other RIP-enabled devices rather than full
routing data.
3 Select the Operation Mode:
■
Disabled — RIP is not enabled for the WAN or LAN interface.
■
Enabled — RIP is enabled for the WAN or LAN interface. The router
will transmit RIP update information to other RIP-enabled devices.
■
Silent — RIP is enabled, however the Router only receives RIP update
messages, it will not transmit any messages itself.
4 In the Version field, select 1 or 2.
3Com recommends that you only use RIPv1 if there is an existing
RIP-enabled device on your network that does not support RIPv2. In all
other cases, you should use RIPv2.
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CHAPTER 5: CONFIGURING THE ROUTER
5 Use the Poison Reverse drop-down menu to enable or disable Poison
Reverse on the Router. Enabling Poison Reverse on your Router allows it
to indicate to other RIP-enabled devices that they have both routes that
point to each other, preventing data loops.
6 Use the Authentication Required field to choose the mode of
authentication:
■
None — Switches off authentication on the specified interface.
■
Password — An unencrypted text password that needs to be set on all
RIP-enabled devices connected to this Router. RIP information is not
shared between devices whose passwords do not match.
7 In the Authentication Code field, enter the password that is required if
the Password option has been selected.
8 Click Apply.
DDNS
The Router provides a list of dynamic DNS providers for you to choose
from. Dynamic Domain Name Server (DDNS) enables you to map a static
domain name to a dynamic IP address.
The Router supports five DDNS providers:
■
DynDNS.org
■
TZO.com
■
Dt DNS.com
■
No-IP.com
■
Zoneedit.com
Advanced
89
Before you set up DDNS, you must obtain an account, password or key
and static domain name from your DDNS provider.
DDNS is disabled by default.
Figure 74 Dynamic Domain Name Server (DDNS) Screen
1 Check Enable DDNS.
2 Select the provider, and then enter the necessary information provided by
your DDNS provider.
3 Click Apply.
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CHAPTER 5: CONFIGURING THE ROUTER
SNMP
SNMP (Simple Network Management Protocol) allows remote
management of your Router by a PC that has an SNMP management
agent installed.
Figure 75 SNMP Screen
To Configure SNMP Community:
1 In the Community column, enter the name of the SNMP communication
channel. Your SNMP management agent needs to be configured with this
name so that it can communicate with your Router.
2 In the Access column, select Read to allow the management agent to
collect data (for example, bandwidth usage) from your Router. Select
Write to allow the management agent to change the configuration of
your Router.
3 Check the appropriate Valid checkbox to enable the communication
channel.
Advanced
91
You can configure your Router to send status messages to the SNMP
management agent if a problem occurs on the network. To configure
SNMP traps:
1 In the IP Address field, enter the IP address of the PC to which you want
your Router to send status messages.
2 In the Community field, enter the name of the SNMP communication
channel to which you want your Router to send status messages.
3 Set the Version field to match the version of trap messaging that your
SNMP management agent supports. The Router supports V1 and V2c
trap messaging.
Syslog
Using third party syslog software, this Syslog Server tool will automatically
download the Router log to the specified server IP address.
Figure 76 Syslog Server Screen
1 Check the Enable Syslog Server checkbox.
2 Enter the Server LAN IP Address in the space provided.
3 Click Apply.
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CHAPTER 5: CONFIGURING THE ROUTER
Proxy ARP
Proxy ARP is the technique in which one host, usually a Router, answers
ARP requests intended for another machine. By "faking" its identity, the
Router accepts responsibility for routing packets to the "real" or intended
destination. This heightens the security for your network.
Figure 77 Proxy ARP Screen
Enter the corresponding IP address in the IP Address From and IP Address
To fields.
System Tools
System Tools
Restart Router
These screens allow you to manage different parameters of the Router
and perform certain administrative functions.
Sometimes it may be necessary to restart (or reboot) the Router.
Restarting the Router from this screen will not delete any of your
configuration settings.
Click the Restart the Router button to restart the Router.
Figure 78 Restart Router Screen
Configuration
93
Use this configuration screen to backup, restore or reset the
configuration details of the Router.
Figure 79 Configuration Screen
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CHAPTER 5: CONFIGURING THE ROUTER
Upgrade
■
Backup Configuration — You can save your current configuration by
clicking the Backup button. Saving your configuration will allow you
to restore it later if your settings are lost or changed. It is
recommended that you backup your current configuration before
performing a firmware update.
■
Restore Configuration Data — The Restore Settings option will allow
you to restore a previously saved configuration. Please select the
configuration file using the Browse button and click Restore.
■
Reset to Factory Default — Using this option will reset all of the
settings in the Router to the factory default settings. It is
recommended that you backup your settings before you restore all of
the defaults. To restore the factory default settings, click Reset.
From time to time 3Com may release new versions of the Router’s
firmware. Firmware updates contain improvements and fixes to problems
that may have existed.
Figure 80 Upgrade Screen
Please download the firmware file to your PC first, and then click Browse
and select the firmware file. Click Upgrade to upload the firmware to the
Router.
System Tools
Time Zone
95
You can set the time settings for the Router on this screen.
Figure 81 Time Zone Screen
The Router keeps time by connecting to a Network Time Protocol (NTP)
server. This allows the Router to synchronize the system clock to the
Internet. The synchronized clock in the Router is used to record the
security log and control client filtering. Select the time zone that you
reside in. If you reside in an area that observes Daylight Saving, then
check the checkbox for Enable Daylight Saving. The system clock may not
update immediately. Allow at least 15 minutes for the Router to contact
the time servers on the Internet and get a response. You cannot set the
clock yourself.
You can specify which NTP servers the Router will use to update the
system clock, although doing this should only be necessary if you are
experiencing difficulty.
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Ping
The ping tool is used to test if the network is working properly.
Figure 82 Ping Screen
1 Enter the IP address or domain name in the IP Address or Domain Name
field, and click Ping.
2 Select from the Number of times to Ping drop-down menu.
3 The Router keeps a log of the ping test, click Clear Log to delete the
records.
System Tools
Traceroute
97
Traceroute is the program that shows you the route over the network
between two systems, listing all the intermediate routers a connection
must pass through to get to its destination. It can help you determine
why your connections to a given server might be poor, and can often help
you figure out where exactly the problem is. It also shows you how
systems are connected to each other, letting you see how your ISP
connects to the Internet as well as how the target system is connected.
Figure 83 Traceroute Screen
1 Enter the IP address or domain name in the IP Address or Domain Name
field, and click Traceroute.
2 The Router keeps a log of the traceroute test, click Clear Log to delete the
records.
98
CHAPTER 5: CONFIGURING THE ROUTER
DNS Lookup
DNS Lookup is the process of resolving an IP address
(i.e. 192.168.11.137) to a host name (i.e. xxxcompany.net).
Figure 84 DNS Lookup Screen
1 Enter the IP address or domain name in the IP Address or Domain Name
field, and click Dns lookup.
2 The Router keeps a log of the DNS lookup test, click Clear Log to delete
the records.
Status and Logs
Status and Logs
Status
You can use the Status Screen to view version numbers for your Router’s
software and hardware and check the status of connections to WAN,
LAN and WLAN interfaces.
Figure 85 Status Screen
This screen shows Router status and statistics.
ADSL Status
99
Figure 86 ADSL Status Screen
This screen shows ADSL modem status and statistics.
100
CHAPTER 5: CONFIGURING THE ROUTER
ATM PVC Status
Figure 87 ATM PVC Status Screen
This screen shows ATM PVC status and statistics.
Routing Table
■
Click Release to release the IP address from your ISP.
■
Click Renew to obtain the IP address from your ISP.
This screen displays details for the default routing used by your Router
and any routing created using Static Routing or RIP.
Figure 88 Routing Table Screen
Status and Logs
Logs
101
This screen shows any attempts that have been made to gain access to
your network as well as the system activities.
Figure 89 Logs Screen
■
Click Help to view the help file.
■
Click Save to save the log to the hard disk as a text file. When
prompted for a location to save the file to, specify a filename and
location, and then click OK.
■
Click Clear to clear the log (note that all current entries will be erased).
■
Click Refresh to update the record.
102
CHAPTER 5: CONFIGURING THE ROUTER
Support/Feedback
Support
You can use the Support/Feedback screen to obtain support and help,
and also provide feedback to 3Com.
Figure 90 Support Screen
This screen shows support information.
Feedback
To provide feedback to 3Com, please click Provide Feedback, and this will
connect you to the 3Com Web site.
Figure 91 Feedback Screen
This screen shows feedback information.
6
Basic Connection
Checks
Browsing to the
Router
Configuration
Screens
TROUBLESHOOTING
■
Check that the Router is connected to your computers and to the
telephone line, and that all the equipment is powered on. Check that
the LAN Status and SYNC LEDs on the Router are illuminated, and that
any corresponding LEDs on the NIC are also illuminated.
■
Ensure that the computers have completed their start-up procedure
and are ready for use. Some network interfaces may not be correctly
initialized until the start-up procedure has completed.
■
If the link status LED does not illuminate for a port that is connected,
check that you do not have a faulty cable. Try a different cable.
If you have connected your Router and computers together but cannot
browse to the Router configuration screens, check the following:
■
Confirm that the physical connection between your computer and the
Router is OK, and that the LAN Status LEDs on the Router and
network adapter are illuminated and indicating the same speed
(10Mbps or 100Mbps). Some NICs do not have status LEDs, in which
case a diagnostic program may be available that can give you this
information.
■
Ensure that you have configured your computer as described in
Chapter 3. Restart your computer while it is connected to the Router
to ensure that your computer receives an IP address.
■
When entering the address of the Router into your web browser,
ensure that you use the full URL including the http:// prefix (e.g.
http://192.168.1.1).
■
Ensure that you do not have a Web proxy enabled on your computer.
Go to the Control Panel and click on Internet Options. Select the
Connections tab and click on the LAN Settings button at the bottom.
Make sure that the Proxy Server option is unchecked.
104
CHAPTER 6: TROUBLESHOOTING
■
Connecting to the
Internet
Forgotten Password
and Reset to
Factory Defaults
If you cannot browse to the Router, use the winipcfg utility in
Windows 98/ME to verify that your computer has received the correct
address information from the Router. From the Start menu, choose
Run and then enter winipcfg. Check that the computer has an IP
address of the form 192.168.1.xxx (where xxx is in the range 2-254),
the subnet mask is 255.255.255.0, and the default Router is
192.168.1.1 (the address of the Router). If these are not correct, use
the Release and Renew functions to obtain a new IP address from the
Router. Under Windows 2000 and Windows XP, use the ipconfig
command-line utility to perform the same functions.
If you can browse to the Router configuration screens but cannot access
Web sites on the Internet, check the following:
■
Confirm that the physical connection between the Router and the
telephone line is OK, and that the DSL LED on the Router is
illuminated.
■
Ensure that you have entered the correct information into the Router
configuration screens as required by your Internet Service Provider. Use
the Internet Settings screen to verify this.
■
Check that the PPPoE or PPPoA user name and password are correct.
■
Ensure that your computers are not configured to use a Web proxy.
On Windows computers, this can be found under Control Panel >
Internet Options > Connections.
If you can browse to the Router configuration screen but cannot log on
because you do not know or have forgotten the password, follow the
steps below to reset the Router to its factory default configuration.
CAUTION: All your configuration changes will be lost, and you will need
to run the configuration wizard again before you can re-establish your
Router connection to the Internet. Also, other computer users will lose
their network connections whilst this process is taking place, so choose a
time when this would be convenient.
1 Power off the Router.
2 Disconnect all your computers and the telephone line from the Router.
3 Re-apply power to the Router, and wait for it to finish booting up.
Wireless Networking
105
4 Press and hold the Reset button on the rear panel (see “The rear panel
(Figure 4) of the Router contains four LAN ports, one ADSL port, a reset
button, a power OK LED, and a power adapter socket.” on page 16) for 5
seconds.
5 The Router will restart, and when the start-up sequence has completed,
browse to:
http://192.168.1.1
and run the configuration wizard. You may need to restart your computer
before you attempt this.
6 When the configuration wizard has completed, you may reconnect your
network as it was before.
Wireless
Networking
■
Ensure that you have an 802.11b or 802.11g wireless adapter for
each wireless computer, and that it is correctly installed and
configured. Verify that each wireless computer has either Windows 98
or higher or MAC OS 8.5 or higher.
■
Verify that your wireless computers are configured to work in
Infrastructure mode and not Ad Hoc mode. The Router contains an
Access Point that is designed to operate in Infrastructure mode. Ad
Hoc mode is not supported by the Router.
■
If you have a wired and a wireless NIC in the same computer, ensure
that the wired NIC is disabled.
■
Check the status of the WLAN LED, it should be lit if wireless is
enabled and will flash when there is wireless activity. If not lit go to
“Wireless Settings” on page 43 and enable wireless networking.
■
Ensure that the TCP/IP settings for all devices are correct.
■
Ensure that the Wireless Clients are using the same SSID or Service
Area Name as the Router. The SSID is case-sensitive.
■
Ensure that the encryption method and level that you use on your
clients are the same as those configured on the Router. The Router
cannot simultaneously support WPA and WEP encryption.
■
Ensure that you have the wireless computer enabled in the list of
allowed MAC addresses if you are using MAC Address Filtering on the
Router.
■
If you are having difficulty connecting or are operating at a low speed
try changing the antenna positions on the rear of the Router.
106
CHAPTER 6: TROUBLESHOOTING
For more effective coverage you can try reorientating your antennae.
Place one antenna vertically and one horizontally to improve coverage.
Additionally consider moving the wireless computer closer to the
Router to confirm that the building structure or fittings are not
adversely affecting the connectivity. If this resolves the problem
consider relocating the wireless computer or the Router, or trying a
different channel on the Router.
■
Sources of interference: The 2.4Ghz ISM band is used for 802.11b and
802.11g. This is generally a licence free band for low power
applications, and you may have other devices at your location that
operate in this frequency band. You should take care to ensure that
there are no devices, like microwave ovens for example, close to the
Router or wireless computers as this could affect receiver sensitivity
and reduce the performance of your network. If you are unsure try
relocating both the wireless computers and the Router to establish
whether this problem exists.
■
Most wireless computer adapters will scan the channels for the
wireless Router. If a wireless computer has not located the Router then
try initiating a search manually if the client software supports this
feature or manually set the channel on your wireless computer to
correspond to the Router channel number. Please refer to your
wireless computer adapter documentation and vendor to do this.
■
Speed of connection: The 802.11b and 802.11g standards will
automatically choose the best speed depending on the quality of your
connection. As the signal quality weakens then the speed falls back to
a lower speed. The speeds supported by 802.11g are 54 Mbps,
48 Mbps, 36 Mbps, 24 Mbps, 18 Mbps, 12 Mbps and 6 Mbps. The
speeds supported by 802.11b are 11 Mbps, 5.5 Mbps, 2 Mbps and
1 Mbps. In general the closer you are to the Router the better the
speed. If you are not achieving the speed you had anticipated then try
moving the antenna on the Router or moving the wireless computer
closer to the Router. In an ideal network the Router should be located
in the centre of the network with wireless computers distributed
around it. Applications are generally available with the computer
wireless card to carry out a site survey. Use this application to find the
optimal siting for your wireless computer. Consult your Computer
Card documentation and vendor for more details.
Recovering from Corrupted Software
Recovering from
Corrupted Software
107
If the system software has become corrupted, the Router will enter a
“recovery” state; DHCP is enabled, and the LAN IP address is set to
192.168.1.1. Follow the instructions below to upload a new copy of the
system software to a Router unit in this state.
Ensure that one of your computers has a copy of the new software image
file stored on its hard disk or available on CD-ROM.
The latest software is available on 3Com’s Web site at:
www.3com.com
1 Remove power from the Router and disconnect the telephone line and all
your computers, except for the one computer with the software image.
2 You will need to reconfigure this computer to obtain an IP address
automatically (see “Obtaining an IP Address Automatically” on page 23).
3 Restart the computer, and re-apply power to the Router.
4 Using the Web browser on the computer, enter the following URL in the
location bar:
http://192.168.1.1.
This will connect you to the Recovery utility in the Router.
5 Follow the on-screen instructions. Enter the path and filename of the
software image file.
6 When the upload has completed, the Router will restart, run the self-test
and, if successful, resume normal operation.
7 Refer to the Installation Guide to reconnect your Router to the telephone
line and the computers in your network. Do not forget to reconfigure the
computer you used for the software upload.
If the Router does not resume normal operation following the upload, it
may be faulty. Contact your supplier for advice.
108
CHAPTER 6: TROUBLESHOOTING
Frequently Asked
Questions
How do I reset the Router to Factory Defaults?
See “Forgotten Password and Reset to Factory Defaults” on
page 104.
How many computers on the LAN does the Router support?
A maximum of 253 computers on the LAN are supported.
How many wireless clients does the Router support?
A maximum of 128 wireless clients are supported.
There are only 4 LAN ports on the Router. How are additional
computers connected?
You can expand the number of connections available on your LAN
by using hubs, switches and wireless access points connected to
the Router. 3Com wireless access points and hubs and switches
provide a simple, reliable means of expanding your network;
contact your supplier for more information, or visit:
http://www.3com.com/
Does the Router support virtual private networks (VPNs)?
The Router supports VPN passthrough, which allows VPN clients on
the LAN to communicate with VPN hosts on the Internet. It is also
possible to set up VPN hosts on your LAN that clients elsewhere on
the Internet can connect to, but this is not a recommended
configuration.
Where can I download software updates for the Router?
Updates to the Router software are posted on the 3Com support
Web site, accessible by visiting:
http://www.3com.com
A
IP ADDRESSING
The Internet
Protocol Suite
The Internet Protocol suite consists of a well-defined set of
communications protocols and several standard application protocols.
Transmission Control Protocol/Internet Protocol (TCP/IP) is probably the
most widely known and is a combination of two of the protocols (IP and
TCP) working together. TCP/IP is an internationally adopted and
supported networking standard that provides connectivity between
equipment from many vendors over a wide variety of networking
technologies.
Managing the
Router over the
Network
To manage a device over the network, the Router must be correctly
configured with the following IP information:
IP Addresses and
Subnet Masks
■
An IP address
■
A Subnet Mask
Each device on your network must have a unique IP address to operate
correctly. An IP address identifies the address of the device to which data
is being sent and the address of the destination network. IP addresses
have the format n.n.n.x where n is a decimal number between 0 and 255
and x is a number between 1 and 254 inclusive.
However, an IP address alone is not enough to make your device operate.
In addition to the IP address, you need to set a subnet mask. All networks
are divided into smaller sub-networks and a subnet mask is a number
that enables a device to identify the sub-network to which it is
connected.
110
APPENDIX A: IP ADDRESSING
For your network to work correctly, all devices on the network must have:
■
The same sub-network address.
■
The same subnet mask.
The only value that will be different is the specific host device number.
This value must always be unique.
An example IP address is ‘192.168.100.8’. However, the size of the
network determines the structure of this IP address. In using the Router,
you will probably only encounter two types of IP address and subnet
mask structures.
Type One
In a small network, the IP address of ‘192.168.100.8’ is split into two
parts:
■
Part one (‘192.168.100’) identifies the network on which the device
resides.
■
Part two (‘.8’) identifies the device within the network.
This type of IP address operates on a subnet mask of ‘255.255.255.0’.
See Table 3 for an example about how a network with three computers
and a Router might be configured.
Table 3 IP Addressing and Subnet Masking
Device
IP Address
Subnet Mask
PC 1
192.168.100.8
255.255.255.0
PC 2
192.168.100.33
255.255.255.0
PC 3
192.168.100.188
255.255.255.0
Router
192.168.100.72
255.255.255.0
Type Two
In larger networks, where there are more devices, the IP address of
‘192.168.100.8’ is, again, split into two parts but is structured differently:
■
Part one (‘192.168’) identifies the network on which the device
resides.
■
Part two (‘.100.8’) identifies the device within the network.
How does a Device Obtain an IP Address and Subnet Mask?
111
This type of IP Address operates on a subnet mask of ‘255.255.0.0’.
See Table 4 for an example about how a network (only four computers
represented) and a Router might be configured.
Table 4 IP Addressing and Subnet Masking
How does a Device
Obtain an IP
Address and Subnet
Mask?
DHCP Addressing
Device
IP Address
Subnet Mask
PC 1
192.168.100.8
255.255.0.0
PC 2
192.168.201.30
255.255.0.0
PC 3
192.168.113.155
255.255.0.0
PC 4
192.168.002.230
255.255.0.0
Router
192.168.002.72
255.255.0.0
There are three different ways to obtain an IP address and the subnet
mask. These are:
■
Dynamic Host Configuration Protocol (DHCP) Addressing
■
Static Addressing
■
Automatic Addressing (Auto-IP Addressing)
The Router contains a DHCP server, which allows computers on your
network to obtain an IP address and subnet mask automatically. DHCP
assigns a temporary IP address and subnet mask which gets reallocated
once you disconnect from the network.
DHCP will work on any client Operating System such as Windows 95,
Windows 98, Windows NT 4.0, Windows 2000 and Windows XP.
Also, using DHCP means that the same IP address and subnet mask will
never be duplicated for devices on the network. DHCP is particularly
useful for networks with large numbers of users on them.
Static Addressing
Auto-IP Addressing
You must enter an IP Address and the subnet mask manually on every
device. Using a static IP and subnet mask means the address is
permanently fixed.
Network devices use automatic IP addressing if they are configured to
acquire an address using DHCP but are unable to contact a DHCP server.
Automatic IP addressing is a scheme where devices allocate themselves
112
APPENDIX A: IP ADDRESSING
an IP address at random from the industry standard subnet of
169.254.x.x (with a subnet mask of 255.255.0.0). If two devices allocate
themselves the same address, the conflict is detected and one of the
devices allocates itself a new address.
Automatic IP addressing support was introduced by Microsoft in the
Windows 98 operating system and is also supported in Windows 2000
and Windows XP.
B
TECHNICAL SPECIFICATIONS
This section lists the technical specifications for the OfficeConnect ADSL
Wireless 54Mbps 11g Firewall Router.
OfficeConnect ADSL
Wireless 54Mbps
11g Firewall Router
Interfaces
DSL connection
LAN connection — four 10 Mbps/100 Mbps dual speed Ethernet ports
(10BASE-T/100BASE-TX)
WLAN Interfaces
Standard IEEE 802.11g, Direct Sequence Spread Spectrum (DSSS)
Transmission rate: 54 Mbps, automatic fallback to 48, 36, 24, 18, 12, or
6 Mbps
Maximum channels: 13
Range up to 304.8m (1000ft)
Sensitivity: 6, 12, 18, 24, 36, 48 Mbps: -85 dBm;
54 Mbps -66 dBm typical
Modulation: CCK, BPSK, QPSK, OFDM
Encryption: 40/64 bit WEP, 128 bit WEP, WPA
Maximum clients: 128
O/P Power: 18dBm
Standard IEEE 802.11b, Direct Sequence Spread Spectrum (DSSS)
Transmission rate: 11Mbps, automatic fallback to 5.5, 2, or 1 Mbps
Maximum channels: 13
Range up to 304.8m (1000ft)
Sensitivity: 1, 2, 5.5 Mbps: -85 dBm; 11 Mbps -82 dBm typical
Modulation: CCK, BPSK, QPSK
Encryption: 40/64 bit WEP, 128 bit WEP, WPA
Maximum clients: 128
O/P Power 16dBm
114
APPENDIX B: TECHNICAL SPECIFICATIONS
Operating Temperature
0 °C to 40 °C (32 °F to 105 °F)
Power
8VA, 25 BThU/hr
Humidity
0% to 90% (non-condensing) humidity
Dimensions
■
Width = 220 mm (8.7 in.)
■
Depth = 133 mm (5.2 in.)
■
Height = 38 mm (1.5 in.)
Weight
Approximately 550 g (1.1 lbs)
Standards
Functional:
ISO 8802/3
IEEE 802.3
IEEE 802.11b, 802.11g
Safety:
EN 60950-1: 2001
UL 60950-1
IEC 60950-1: 2001
EMC:
FCC Part15 B
EN 55022
EN 55024
EN 61000
EN 301 489-1
ICES-003
Radio
FCC Part 15 C
RSS-210
EN 300 328
Environmental: EN 60068 (IEC 68)
*See “Regulatory Notices” for conditions of operation.
OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router
System Requirements
115
Operating Systems
The Router will support the following Operating Systems:
Ethernet Performance
Cable Specifications
■
Windows 98Se
■
Windows NT 4.0
■
Windows ME
■
Windows 2000
■
Windows XP
■
Mac OS 8.5 or higher
■
Unix
The Router complies to the IEEE 802.3i, u and x specifications.
The Router supports the following cable types and maximum lengths:
■
Category 3 (Ethernet) or Category 5 (Fast Ethernet or Dual Speed
Ethernet) Twisted Pair — shielded and unshielded cable types.
■
Maximum cable length of 100m (327.86 ft).
116
APPENDIX B: TECHNICAL SPECIFICATIONS
C
SAFETY INFORMATION
Important Safety
Information
WARNING: Warnings contain directions that you must follow for your
personal safety. Follow all directions carefully.
You must read the following safety information carefully before you
install or remove the unit:
WARNING: The Router generates and uses radio frequency (rf) energy. In
some environments, the use of rf energy is not permitted. The user
should seek local advice on whether or not rf energy is permitted within
the area of intended use.
WARNING: Exceptional care must be taken during installation and
removal of the unit.
WARNING: To ensure compliance with international safety standards,
only use the power adapter that is supplied with the unit.
WARNING: The socket outlet must be near to the unit and easily
accessible. You can only remove power from the unit by disconnecting
the power cord from the outlet.
WARNING: This unit operates under SELV (Safety Extra Low Voltage)
conditions according to IEC 60950. The conditions are only maintained
if the equipment to which it is connected also operates under SELV
conditions.
WARNING: There are no user-replaceable fuses or user-serviceable
parts inside the Router. If you have a physical problem with the unit
that cannot be solved with problem solving actions in this guide,
contact your supplier.
WARNING: Disconnect the power adapter before moving the unit.
118
APPENDIX C: SAFETY INFORMATION
WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They
cannot be used as telephone sockets. Only connect RJ-45 data
connectors to these sockets.
Wichtige
Sicherheitshinweise
VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer
eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig
zu befolgen.
Sie müssen die folgenden Sicherheitsinformationen sorgfältig
durchlesen, bevor Sie das Geräts installieren oder ausbauen:
VORSICHT: Der Router erzeugt und verwendet Funkfrequenz (RF). In
manchen Umgebungen ist die Verwendung von Funkfrequenz nicht
gestattet. Erkundigen Sie sich bei den zuständigen Stellen, ob die
Verwendung von Funkfrequenz in dem Bereich, in dem der Bluetooth
Access Point eingesetzt werden soll, erlaubt ist.
VORSICHT: Bei der Installation und beim Ausbau des Geräts ist mit
höchster Vorsicht vorzugehen.
VORSICHT: Aufgrund von internationalen Sicherheitsnormen darf das
Gerät nur mit dem mitgelieferten Netzadapter verwendet werden.
VORSICHT: Die Netzsteckdose muß in der Nähe des Geräts und leicht
zugänglich sein. Die Stromversorgung des Geräts kann nur durch
Herausziehen des Gerätenetzkabels aus der Netzsteckdose
unterbrochen werden.
VORSICHT: Der Betrieb dieses Geräts erfolgt unter den
SELV-Bedingungen (Sicherheitskleinstspannung) gemäß IEC 60950.
Diese Bedingungen sind nur gegeben, wenn auch die an das Gerät
angeschlossenen Geräte unter SELV-Bedingungen betrieben werden.
119
VORSICHT: Es sind keine von dem Benutzer zu ersetzende oder zu
wartende Teile in dem Gerät vorhanden. Wenn Sie ein Problem mit
dem Router haben, das nicht mittels der Fehleranalyse in dieser
Anleitung behoben werden kann, setzen Sie sich mit Ihrem Lieferanten
in Verbindung.
VORSICHT: Vor dem Ausbau des Geräts das Netzadapterkabel
herausziehen.
VORSICHT: RJ-45-Anschlüsse. Dies sind abgeschirmte
RJ-45-Datenbuchsen. Sie können nicht als Telefonanschlußbuchsen
verwendet werden. An diesen Buchsen dürfen nur RJ-45-Datenstecker
angeschlossen werden.
Consignes
importantes de
sécurité
AVERTISSEMENT: Les avertissements présentent des consignes que
vous devez respecter pour garantir votre sécurité personnelle. Vous
devez respecter attentivement toutes les consignes.
Nous vous demandons de lire attentivement les consignes suivantes de
sécurité avant d’installer ou de retirer l’appareil:
AVERTISSEMENT: La Router fournit et utilise de l'énergie
radioélectrique (radio fréquence -rf). L'utilisation de l'énergie
radioélectrique est interdite dans certains environnements. L'utilisateur
devra se renseigner sur l'autorisation de cette énergie dans la zone
prévue.
AVERTISSEMENT: Faites très attention lors de l'installation et de la
dépose du groupe.
AVERTISSEMENT: Pour garantir le respect des normes internationales
de sécurité, utilisez uniquement l'adaptateur électrique remis avec cet
appareil.
AVERTISSEMENT: La prise secteur doit se trouver à proximité de
l’appareil et son accès doit être facile. Vous ne pouvez mettre l’appareil
hors circuit qu'en débranchant son cordon électrique au niveau de
cette prise.
AVERTISSEMENT: L’appareil fonctionne à une tension extrêmement
basse de sécurité qui est conforme à la norme CEI 60950. Ces
120
APPENDIX C: SAFETY INFORMATION
conditions ne sont maintenues que si l'équipement auquel il est
raccordé fonctionne dans les mêmes conditions.
AVERTISSEMENT: Il n’y a pas de parties remplaceables par les
utilisateurs ou entretenues par les utilisateurs à l’intérieur du moyeu. Si
vous avez un problème physique avec le moyeu qui ne peut pas être
résolu avec les actions de la résolution des problèmes dans ce guide,
contacter votre fournisseur.
AVERTISSEMENT: Débranchez l'adaptateur électrique avant de retirer
cet appareil.
AVERTISSEMENT: Ports RJ-45. Il s'agit de prises femelles blindées de
données RJ-45. Vous ne pouvez pas les utiliser comme prise de
téléphone. Branchez uniquement des connecteurs de données RJ-45 sur
ces prises femelles.
D
END USER SOFTWARE LICENSE
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END USER SOFTWARE LICENSE AGREEMENT
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SOFTWARE AND DOCUMENTATION UNUSED TO THE SUPPLIER WHERE YOU OBTAINED IT.
LICENSE: 3Com grants you a nonexclusive, nontransferable (except as specified herein) license to use the accompanying software program(s) in
executable form (the "Software") and accompanying documentation (the "Documentation"), subject to the terms and restrictions set forth in this
Agreement. You are not permitted to lease, rent, distribute or sublicense (except as specified herein) the Software or Documentation or to use the
Software or Documentation in a time-sharing arrangement or in any other unauthorized manner. Further, no license is granted to you in the human
readable code of the Software (source code). Except as provided below, this Agreement does not grant you any rights to patents, copyrights, trade
secrets, trademarks, or any other rights with respect to the Software or Documentation.
Subject to the restrictions set forth herein, the Software is licensed to be used on any workstation or any network server owned by or leased to you, for
your internal use, provided that the Software is used only in connection with this 3Com product. You may reproduce and provide one (1) copy of the
Software and Documentation for each such workstation or network server on which the Software is used as permitted hereunder. Otherwise, the
Software and Documentation may be copied only as essential for backup or archive purposes in support of your use of the Software as permitted
hereunder. Each copy of the Software and Documentation must contain 3Com's and its licensors' proprietary rights and copyright notices in the same
form as on the original. You agree not to remove or deface any portion of any legend provided on any licensed program or documentation delivered to
you under this Agreement.
ASSIGNMENT; NO REVERSE ENGINEERING: You may transfer the Software, Documentation and the licenses granted herein to another party in the
same country in which you obtained the Software and Documentation if the other party agrees in writing to accept and be bound by the terms and
conditions of this Agreement. If you transfer the Software and Documentation, you must at the same time either transfer all copies of the Software and
Documentation to the party or you must destroy any copies not transferred. Except as set forth above, you may not assign or transfer your rights under
this Agreement.
Modification, reverse engineering, reverse compiling, or disassembly of the Software is expressly prohibited. However, if you are a European Union
("EU") resident, information necessary to achieve interoperability of the Software with other programs within the meaning of the EU Directive on the
Legal Protection of Computer Programs is available to you from 3Com upon written request.
EXPORT RESTRICTIONS: The Software, including the Documentation and all related technical data (and any copies thereof) (collectively "Technical
Data"), is subject to United States Export control laws and may be subject to export or import regulations in other countries. In addition, the Technical
Data covered by this Agreement may contain data encryption code which is unlawful to export or transfer from the United States or country where you
legally obtained it without an approved U.S. Department of Commerce export license and appropriate foreign export or import license, as required. You
agree that you will not export or re-export the Technical Data (or any copies thereof) or any products utilizing the Technical Data in violation of any
applicable laws or regulations of the United States or the country where you legally obtained it. You are responsible for obtaining any licenses to export,
re-export or import the Technical Data.
In addition to the above, the Product may not be used, exported or re-exported (i) into or to a national or resident of any country to which the U.S. has
embargoed; or (ii) to any one on the U.S. Commerce Department's Table of Denial Orders or the U.S. Treasury Department's list of Specially Designated
Nationals.
TRADE SECRETS; TITLE: You acknowledge and agree that the structure, sequence and organization of the Software are the valuable trade secrets of
3Com and its suppliers. You agree to hold such trade secrets in confidence. You further acknowledge and agree that ownership of, and title to, the
Software and Documentation and all subsequent copies thereof regardless of the form or media are held by 3Com and its suppliers.
UNITED STATES GOVERNMENT LEGENDS: The Software, Documentation and any other technical data provided hereunder is commercial in nature
122
APPENDIX D: END USER SOFTWARE LICENSE AGREEMENT
and developed solely at private expense. The Software is delivered as "Commercial Computer Software" as defined in DFARS 252.227-7014 (June
1995) or as a commercial item as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in this Agreement, which is
3Com's standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov.
1995) or FAR 52.227-14 (June 1987), whichever is applicable.
TERM AND TERMINATION: The licenses granted hereunder are perpetual unless terminated earlier as specified below. You may terminate the licenses
and this Agreement at any time by destroying the Software and Documentation together with all copies and merged portions in any form. The licenses
and this Agreement will also terminate immediately if you fail to comply with any term or condition of this Agreement. Upon such termination you
agree to destroy the Software and Documentation, together with all copies and merged portions in any form.
LIMITED WARRANTIES AND LIMITATION OF LIABILITY: All warranties and limitations of liability applicable to the Software are as stated on the
Limited Warranty Card or in the product manual, whether in paper or electronic form, accompanying the Software. Such warranties and limitations of
liability are incorporated herein in their entirety by this reference.
GOVERNING LAW: This Agreement shall be governed by the laws of the State of California, U.S.A. excluding its conflicts of laws principles and
excluding the United Nations Convention on Contracts for the International Sale of Goods.
SEVERABILITY: In the event any provision of this Agreement is found to be invalid, illegal or unenforceable, the validity, legality and enforceability of
any of the remaining provisions shall not in any way be affected or impaired and a valid, legal and enforceable provision of similar intent and economic
impact shall be substituted therefor.
ENTIRE AGREEMENT: This Agreement sets forth the entire understanding and agreement between you and 3Com and supersedes all prior
agreements, whether written or oral, with respect to the Software and Documentation, and may be amended only in a writing signed by both parties.
Should you have any questions concerning this Agreement or if you desire to contact 3Com for any reason, please contact the 3Com subsidiary serving
your country, or write:
3Com Corporation, 350 Campus Drive, Marlborough, MA. USA 01752-3064
E
Register Your
Product
OBTAINING SUPPORT FOR YOUR
PRODUCT
Warranty and other service benefits start from the date of purchase, so it
is important to register your product quickly to ensure you get full use of
the warranty and other service benefits available to you.
Warranty and other service benefits are enabled through product
registration. Register your product at http://eSupport.3com.com/.
3Com eSupport services are based on accounts that you create or have
authorization to access. First time users must apply for a user name and
password that provides access to a number of eSupport features
including Product Registration, Repair Services, and Service Request. If
you have trouble registering your product, please contact 3Com Global
Services for assistance.
Purchase
Value-Added
Services
To enhance response times or extend warranty benefits, contact 3Com or
your authorized 3Com reseller. Value-added services like 3Com ExpressSM
and GuardianSM can include 24x7 telephone technical support, software
upgrades, onsite assistance or advance hardware replacement.
Experienced engineers are available to manage your installation with
minimal disruption to your network. Expert assessment and
implementation services are offered to fill resource gaps and ensure the
success of your networking projects. More information on 3Com
maintenance and Professional Services is available at www.3com.com.
Contact your authorized 3Com reseller or 3Com for a complete list of the
value-added services available in your area.
124
APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT
Troubleshoot
Online
You will find support tools posted on the 3Com Web site at
www.3com.com.
3Com Knowledgebase helps you troubleshoot 3Com products. This
query-based interactive tool is located at
http://knowledgebase.3com.com and contains thousands of technical
solutions written by 3Com support engineers.
Access Software
Downloads
Software Updates are the bug fix/maintenance releases for the version
of software initially purchased with the product. In order to access these
Software Updates you must first register your product on the 3Com Web
site at http://eSupport.3com.com/
First time users will need to apply for a user name and password. A link to
software downloads can be found at http://eSupport.3com.com/, or
under the Product Support heading at www.3com.com.
Software Upgrades are the feature releases that follow the software
version included with your original product. In order to access upgrades
and related documentation you must first purchase a service contract
from 3Com or your reseller.
Telephone Technical
Support and Repair
To enable telephone support and other service benefits, you must first
register your product at http://eSupport.3com.com/
Warranty and other service benefits start from the date of purchase, so it
is important to register your product quickly to ensure you get full use of
the warranty and other service benefits available to you.
When you contact 3Com for assistance, please have the following
information ready:
■
Product model name, part number, and serial number
■
Proof of purchase, if you have not pre-registered your product
■
A list of system hardware and software, including revision level
■
Diagnostic error messages
■
Details about recent configuration changes, if applicable
Contact Us
125
To send a product directly to 3Com for repair, you must first obtain a
return authorization number (RMA). Products sent to 3Com, without
authorization numbers clearly marked on the outside of the package, will
be returned to the sender unopened, at the sender’s expense. If your
product is registered and under warranty, you can obtain an RMA
number online at http://eSupport.3com.com/. First time users will
need to apply for a user name and password.
Contact Us
3Com offers telephone, e-mail and internet access to technical support
and repair services. To access these services for your region, use the
appropriate telephone number, URL or e-mail address from the list below.
Telephone numbers are correct at the time of publication. Find a current
directory of contact information posted on the 3Com Web site at
http://csoweb4.3com.com/contactus/
Country
Telephone Number
Country
Telephone Number
Asia, Pacific Rim Telephone Technical Support and Repair
Australia
Hong Kong
India
Indonesia
Japan
Malaysia
New Zealand
Pakistan
1 800 678 515
800 933 486
+61 2 9424 5179 or
000800 650 1111
001 803 61009
00531 616 439 or
03 3507 5984
1800 801 777
0800 446 398
+61 2 9937 5083
Philippines
P.R. of China
Singapore
S. Korea
Taiwan
Thailand
1235 61 266 2602 or
1800 1 888 9469
800 810 3033
800 6161 463
080 333 3308
00801 611 261
001 800 611 2000
You can also obtain support in this region using the following e-mail: apr_technical_support@3com.com
Or request a repair authorization number (RMA) by fax using this number:
Europe, Middle East, and Africa Telephone Technical Support and Repair
From anywhere in these
regions, call:
+44 (0)1442 435529
From the following countries, you may use the numbers shown:
+ 65 543 6348
126
APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT
Country
Telephone Number
Country
Telephone Number
Austria
Belgium
Denmark
Finland
France
Germany
Hungary
Ireland
Israel
Italy
0800 297 468
0800 71429
800 17309
0800 113153
0800 917959
0800 182 1502
06800 12813
1 800 553 117
1800 945 3794
800 879489
Luxembourg
Netherlands
Norway
Poland
Portugal
South Africa
Spain
Sweden
Switzerland
U.K.
800 23625
0800 0227788
800 11376
00800 4411 357
800 831416
0800 995 014
900 938 919
020 795 482
0800 553 072
0800 096 3266
You can also obtain support in this region using the following URL:
http://emea.3com.com/support/email.html
Latin America Telephone Technical Support and Repair
Antigua Barbuda
Argentina Local Number
Argentina
Argentina
Aruba
Bahamas
Barbados
Belize
Bermuda
Bolivia
Brazil Local Number
Brazil
British Virgin Islands
Cayman Islands
Chile
Columbia Local Number
Colombia
Costa Rica
Curacao
Dominica
Dominique
Equador
El Salvador
French Guiana
Grenada
AT&T +800 988 2112
54 11 5556 3200
0 810 444 3COM
810 44 32 66
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
55 11 5643 2700
800 133 266
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
57 1 592 5000
800 011 3266
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
Guadalupe
Guatemala
Guyana
Haiti
Honduras
Jamaica
Mexico Local Number
Mexico
Mexico
Monserrat
Nicaragua
Panama
Paraguay
Peru
Puerto Rico
Saba Anquila
St. Kitts Neives
St. Lucia
St. Vincent
Suriname
Trinidad and Tobago
Turks and Caycos
Uruguay - Montevideo
Venezuela
Virgin Islands
You can also obtain support in this region using the following:
Spanish speakers, enter the URL:
http://lat.3com.com/lat/support/form.html
Portuguese speakers, enter the URL:
http://lat.3com.com/br/support/form.html
English speakers in Latin America should send e-mail to:
lat_support_anc@3com.com
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
52 55 52 01 00 04
01 800 849CARE
01 800 849 2273
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
Contact Us
Country
Telephone Number
Country
US and Canada Telephone Technical Support and Repair
1 800 876 3266
127
Telephone Number
128
APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT
GLOSSARY
802.11b
The IEEE specification for wireless Ethernet which allows speeds of up to
11 Mbps. The standard provides for 1, 2, 5.5 and 11 Mbps data rates.
The rates will switch automatically depending on range and environment.
802.11g
The IEEE specification for wireless Ethernet which allows speeds of up to
54 Mbps. The standard provides for 6, 12, 24, 36, 48 and 54 Mbps data
rates. The rates will switch automatically depending on range and
environment.
10BASE-T
The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5
twisted pair cable.
100BASE-TX
The IEEE specification for 100 Mbps Fast Ethernet over Category 5
twisted-pair cable.
Access Point
An access point is a device through which wireless clients connect to
other wireless clients and which acts as a bridge between wireless clients
and a wired network, such as Ethernet. Wireless clients can be moved
anywhere within the coverage area of the access point and still connect
with each other. If connected to an Ethernet network, the access point
monitors Ethernet traffic and forwards appropriate Ethernet messages to
the wireless network, while also monitoring wireless client radio traffic
and forwarding wireless client messages to the Ethernet LAN.
Ad Hoc mode
Ad Hoc mode is a configuration supported by most wireless clients. It is
used to connect a peer to peer network together without the use of an
access point. It offers lower performance than infrastructure mode, which
is the mode the router uses. (see also Infrastructure mode.)
130
GLOSSARY
Auto-negotiation
Some devices in the range support auto-negotiation. Auto-negotiation is
where two devices sharing a link, automatically configure to use the best
common speed. The order of preference (best first) is: 100BASE-TX full
duplex, 100BASE-TX half duplex, 10BASE-T full duplex, and 10BASE-T
half duplex. Auto-negotiation is defined in the IEEE 802.3 standard for
Ethernet and is an operation that takes place in a few milliseconds.
Bandwidth
The information capacity, measured in bits per second, that a channel can
transmit. The bandwidth of Ethernet is 10 Mbps, the bandwidth of Fast
Ethernet is 100 Mbps. The bandwidth for 802.11b wireless is 11Mbps.
Category 3 Cables
One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586
standard. Category 3 is voice grade cable and can only be used in
Ethernet networks (10BASE-T) to transmit data at speeds of up to 10
Mbps.
Category 5 Cables
One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586
standard. Category 5 can be used in Ethernet (10BASE-T) and Fast
Ethernet networks (100BASE-TX) and can transmit data up to speeds of
100 Mbps. Category 5 cabling is better to use for network cabling than
Category 3, because it supports both Ethernet (10 Mbps) and Fast
Ethernet (100 Mbps) speeds.
Channel
Similar to any radio device, the Wireless Cable/DSL router allows you to
choose different radio channels in the wireless spectrum. A channel is a
particular frequency within the 2.4GHz spectrum within which the Router
operates.
Client
The term used to describe the desktop PC that is connected to your
network.
DHCP
Dynamic Host Configuration Protocol. This protocol automatically assigns
an IP address for every computer on your network. Windows 95,
Windows 98 and Windows NT 4.0 contain software that assigns IP
addresses to workstations on a network. These assignments are made by
the DHCP server software that runs on Windows NT Server, and Windows
95 and Windows 98 will call the server to obtain the address. Windows
98 will allocate itself an address if no DHCP server can be found.
GLOSSARY
DNS Server Address
DSL modem
131
DNS stands for Domain Name System, which allows Internet host
computers to have a domain name (such as 3com.com) and one or more
IP addresses (such as 192.34.45.8). A DNS server keeps a database of
host computers and their respective domain names and IP addresses, so
that when a domain name is requested (as in typing “3com.com” into
your Internet browser), the user is sent to the proper IP address. The DNS
server address used by the computers on your home network is the
location of the DNS server your ISP has assigned.
DSL stands for digital subscriber line. A DSL modem uses your existing
phone lines to send and receive data at high speeds.
Encryption
A method for providing a level of security to wireless data transmissions.
The Router uses two levels of encryption; 40/64 bit and 128 bit. 128 bit is
a more powerful level of encryption than 40/64 bit.
ESSID
Extended Service Set Identifier. The ESSID is a unique identifier for your
wireless network. You must have the same ESSID entered into the Router
and each of it's wireless clients.
Ethernet
Ethernet Address
Fast Ethernet
A LAN specification developed jointly by Xerox, Intel and Digital
Equipment Corporation. Ethernet networks use CSMA/CD to transmit
packets at a rate of 10 Mbps over a variety of cables.
See MAC address.
An Ethernet system that is designed to operate at 100 Mbps.
Firewall
Electronic protection that prevents anyone outside of your network from
seeing your files or damaging your computers.
Full Duplex
A system that allows packets to be transmitted and received at the same
time and, in effect, doubles the potential throughput of a link.
Half Duplex
A system that allows packets to transmitted and received, but not at the
same time. Contrast with full duplex.
132
GLOSSARY
Hub
A device that regenerates LAN traffic so that the transmission distance of
that signal can be extended. Hubs are similar to repeaters, in that they
connect LANs of the same type; however they connect more LANs than a
repeater and are generally more sophisticated.
IEEE
Institute of Electrical and Electronics Engineers. This American
organization was founded in 1963 and sets standards for computers and
communications.
IETF
Internet Engineering Task Force. An organization responsible for
providing engineering solutions for TCP/IP networks. In the network
management area, this group is responsible for the development of the
SNMP protocol.
Infrastructure mode
Infrastructure mode is the wireless configuration supported by the Router.
You will need to ensure all of your clients are set up to use infrastructure
mode in order for them to communicate with the Access Point built into
your Router. (see also Ad Hoc mode)
IP
Internet Protocol. IP is a Layer 3 network protocol that is the standard for
sending data through a network. IP is part of the TCP/IP set of protocols
that describe the routing of packets to addressed devices. An IP address
consists of 32 bits divided into two or three fields: a network number and
a host number or a network number, a subnet number, and a host
number.
IP Address
Internet Protocol Address. A unique identifier for a device attached to a
network using TCP/IP. The address is written as four octets separated with
periods (full-stops), and is made up of a network section, an optional
subnet section and a host section.
IPsec
IP Security. Provides IP network-layer encryption. IPSec can support large
encryption networks (such as the Internet) by using digital certificates for
device authentication. When setting up an IPSec connection between
two devices, make sure that they support the same encryption method.
ISP
Internet Service Provider. An ISP is a business that provides connectivity to
the Internet for individuals and other businesses or organizations.
GLOSSARY
LAN
133
Local Area Network. A network of end stations (such as PCs, printers,
servers) and network devices (hubs and switches) that cover a relatively
small geographic area (usually not larger than a floor or building). LANs
are characterized by high transmission speeds over short distances (up to
1000 metres).
MAC
Media Access Control. A protocol specified by the IEEE for determining
which devices have access to a network at any one time.
MAC Address
Media Access Control Address. Also called the hardware or physical
address. A Layer 2 address associated with a particular network device.
Most devices that connect to a LAN have a MAC address assigned to
them as they are used to identify other devices in a network. MAC
addresses are 6 bytes long.
NAT
Network
Network Interface
Card (NIC)
Protocol
Network Address Translation. NAT enables all the computers on your
network to share one IP address. The NAT capability of the Router allows
you to access the Internet from any computer on your home network
without having to purchase more IP addresses from your ISP.
A network is a collection of computers and other computer equipment
that is connected for the purpose of exchanging information or sharing
resources. Networks vary in size, some are within a single room, others
span continents.
A circuit board installed into a piece of computing equipment, for
example, a computer, that enables you to connect it to the network. A
NIC is also known as an adapter or adapter card.
A set of rules for communication between devices on a network. The
rules dictate format, timing, sequencing and error control.
PPPoE
Point-to-Point Protocol over Ethernet. Point-to-Point Protocol is a method
of data transmission originally created for dial-up connections; PPPoE is
for Ethernet connections.
PPTP
Point-to-Point Tunneling Protocol is a method of secure data transmission
between two remote sites over the Internet.
134
GLOSSARY
RJ-45
A standard connector used to connect Ethernet networks. The “RJ”
stands for “registered jack”.
Router
A device that acts as a central hub by connecting to each computer's
network interface card and managing the data traffic between the local
network and the Internet.
Server
A computer in a network that is shared by multiple end stations. Servers
provide end stations with access to shared network services such as
computer files and printer queues.
SSID
Service Set Identifier. Some vendors of wireless products use SSID
interchangeably with ESSID.
Subnet Address
An extension of the IP addressing scheme that allows a site to use a single
IP network address for multiple physical networks.
Subnet Mask
A subnet mask, which may be a part of the TCP/IP information provided
by your ISP, is a set of four numbers configured like an IP address. It is
used to create IP address numbers used only within a particular network
(as opposed to valid IP address numbers recognized by the Internet,
which must assigned by InterNIC).
Subnets
A network that is a component of a larger network.
Switch
A device that interconnects several LANs to form a single logical LAN that
comprises of several LAN segments. Switches are similar to bridges, in
that they connect LANs of a different type; however they connect more
LANs than a bridge and are generally more sophisticated.
TCP/IP
Transmission Control Protocol/Internet Protocol. This is the name for two
of the most well-known protocols developed for the interconnection of
networks. Originally a UNIX standard, TCP/IP is now supported on almost
all platforms, and is the protocol of the Internet.
TCP relates to the content of the data travelling through a network —
ensuring that the information sent arrives in one piece when it reaches its
destination. IP relates to the address of the end station to which data is
being sent, as well as the address of the destination network.
GLOSSARY
Traffic
135
The movement of data packets on a network.
Universal Plug and
Play
Universal Plug and Play is a system which allows compatible applications
to read some of their settings from the Router. This allows them to
automatically configure some, or all, of their settings and need less user
configuration.
URL Filter
A URL Filter is a feature of a firewall that allows it to stop its clients form
browsing inappropriate Web sites.
WAN
Wide Area Network. A network that connects computers located in
geographically separate areas (for example, different buildings, cities, or
countries). The Internet is an example of a wide area network.
WDS
Wireless Distribution System. WDS enables one or more access points to
rebroadcast received signals to extend range and reach, though this can
affect the overall throughput of data.
WECA
Wireless Ethernet Compatibility Alliance. An industry group formed to
certify cross vendor interoperability and compatibility of 802.11b and
802.11g wireless networking products and to promote the standard for
enterprise, small business and home environments. (see also 802.11b,
802.11g, Wi-Fi)
WEP
Wired Equivalent Privacy. A shared key encryption mechanism for wireless
networking. Encryption strength is 40/64 bit or 128 bit.
Wi-Fi
Wireless Fidelity. This is the certification granted by WECA to products
that meet their interoperability criteria. (see also 802.11b, WECA)
Wireless Client
Wireless LAN Service
Area
Wizard
The term used to describe a desktop or mobile PC that is wirelessly
connected to your wireless network.
Another term for ESSID (Extended Service Set Identifier).
A Windows application that automates a procedure such as installation
or configuration.
136
GLOSSARY
WLAN
WPA
Wireless Local Area Network. A WLAN is a group of computers and
devices connected together by wireless in a relatively small area (such as a
house or office).
Wi-Fi Protected Access. A dynamically changing encryption mechanism
for wireless networking. Encryption strength is 256 bit.
137
REGULATORY NOTICES
For The OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router
GENERAL STATEMENTS
The 3Com OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router (WL-552) must be installed and used in
strict accordance with the manufacturer's instructions as described in the user documentation that comes
with the product.
This product contains encryption. It is unlawful to export out of the U.S. without obtaining a U.S. Export
License.
This product does not contain any user serviceable components. Any unauthorized product changes or
modifications will invalidate 3Com's warranty and all applicable regulatory certifications and approvals.
This product can only be used with the supplied antenna(s).
EXPOSURE TO RADIO
FREQUENCY RADIATION
This device generates and radiates radio-frequency energy. In order to comply with FCC radio-frequency
exposure guidelines for an uncontrolled environment, this equipment must be installed and operated while
maintaining a minimum body to antenna distance of 20 cm (approximately 8 in.).
The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not
emit RF field in excess of Health Canada limits for the general population; consult Safety Code 6, obtainable
from Health Canada's website www.hc-sc.gc.ca/rpb.
This product must maintain a minimum body to antenna distance of 20 cm. Under these conditions this
product will meet the Basic Restriction limits of 1999/519/EC [Council Recommendation of 12 July 1999 on
the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz)].
US - RADIO FREQUENCY
REQUIREMENTS
This device must not be co-located or operated in conjunction with any other antenna or transmitter.
US FEDERAL
COMMUNICATIONS
COMMISSION (FCC) EMC
COMPLIANCE
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 residential installation. 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. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or 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 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.
The user may find the following booklet prepared by the Federal Communications Commission helpful:
The Interference Handbook
This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402.
Stock No. 004-000-0034504.
3Com is not responsible for any radio or television interference caused by unauthorized modification of the
devices included with this 3Com OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router (WL-552), or the
substitution or attachment of connecting cables and equipment other than specified by 3Com.
The correction of interference caused by such unauthorized modification, substitution or attachment will be
the responsibility of the user.
Changes or modifications not expressly approved by 3Com could void the user's authority to operate this
equipment.
US MANUFACTURER'S FCC
DECLARATION OF
CONFORMITY
3Com Corporation
350 Campus Drive
Marlborough, MA 01752-3064, USA
(508) 323-5000
Date: March 8, 2006
Declares that the Product:
Brand Name: 3Com Corporation
Model Number: WL-552
Equipment Type: 3Com OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router
138
Complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device
may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
3Com OfficeConnect ADSL Wireless
54Mbps 11g Firewall Router
Model WL-552
INDUSTRY CANADA - RF
COMPLIANCE
This device complies with RSS 210 of Industry Canada.
Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this
device must accept any interference, including interference that may cause undesired operation of this
device.
L ' utilisation de ce dispositif est autorisee seulement aux conditions suivantes: (1) il ne doit pas produire de
brouillage et (2) l' utilisateur du dispositif doit etre pret a accepter tout brouillage radioelectrique recu, meme
si ce brouillage est susceptible de compromettre le fonctionnement du dispositif.
The term "IC" before the equipment certification number only signifies that the Industry Canada technical
specifications were met.
To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that
the equivalent isotropically radiated power (EIRP) is not more than that required for successful
communication. To prevent radio interference to the licensed service, this device is intended to be operated
indoors and away from windows to provide maximum shielding. Equipment (or its transmit antenna) that is
installed outdoors is subject to licensing.
Pour empecher que cet appareil cause du brouillage au service faisant l'objet d'une licence, il doit etre utilize
a l'interieur et devrait etre place loin des fenetres afin de Fournier un ecram de blindage maximal. Si le matriel
(ou son antenne d'emission) est installe a l'exterieur, il doit faire l'objet d'une licence.
INDUSTRY CANADA EMISSIONS COMPLIANCE
STATEMENT
This Class B digital apparatus complies with Canadian ICES-003.
AVIS DE CONFORMITé à LA
RéGLEMENTATION
D'INDUSTRIE CANADA
Cet appareil numérique de la classe B est conform à la norme NMB-003 du Canada.
SAFETY COMPLIANCE NOTICE
This device has been tested and certified according to the following safety standards and is intended for use
only in Information Technology Equipment which has been tested to these or other equivalent standards:
■
UL Standard 60950-1
■
CAN/CSA C22.2 No. 60950-1
■
IEC 60950-1
■
EN 60950-1
EU COMPLIANCE
For connection to ADSL networks
This equipment may be operated in:
AT
BE
CY
CZ
DK
EE
FI
FR
DE
GR
HU
IE
IT
LV
LT
LU
MT
NL
PL
PT
SK
SI
ES
SE
GB
IS
LI
NO
CH
BG
RO
TR
139
Intended use: ADSL 802.11g/b Firewall Router
For connection to ADSL networks
NOTE: To ensure product operation is in compliance with local regulations, select the country in which the
product is installed. Refer to 3CRWDR101A-75 User Guide.
Česky
[Czech]
3Com Coporation tímto prohlašuje, ze tento RLAN
device je ve shodě se základními pozadavky a dalšími
příslušnými ustanoveními směrnice 1999/5/ES.
Dansk
[Danish]
Undertegnede 3Com Corporation erklærer herved, at
følgende udstyr RLAN device overholder de
væsentlige krav og øvrige relevante krav i direktiv
1999/5/EF.
Deutsch
[German]
Hiermit erklärt 3Com Corporation, dass sich das Gerät
RLAN device in Übereinstimmung mit den
grundlegenden Anforderungen und den übrigen
einschlägigen Bestimmungen der Richtlinie
1999/5/EG befindet.
Eesti
[Estonian]
Käesolevaga kinnitab 3Com Corporation seadme
RLAN device vastavust direktiivi 1999/5/EÜ
põhinõuetele ja nimetatud direktiivist tulenevatele
teistele asjakohastele sätetele.
English
Hereby, 3Com Corporation, declares that this RLAN
device is in compliance with the essential
requirements and other relevant provisions of
Directive 1999/5/EC.
Español
[Spanish]
Por medio de la presente 3Com Corporation declara
que el RLAN device cumple con los requisitos
esenciales y cualesquiera otras disposiciones
aplicables o exigibles de la Directiva 1999/5/CE.
Ελληνική
[Greek]
ΜΕ ΤΗΝ ΠΑΡΟΥΣΑ 3Com Corporation ∆ΗΛΩΝΕΙ ΟΤΙ
RLAN device ΣΥΜΜΟΡΦΩΝΕΤΑΙ ΠΡΟΣ ΤΙΣ
ΟΥΣΙΩ∆ΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ ΤΙΣ ΛΟΙΠΕΣ ΣΧΕΤΙΚΕΣ
∆ΙΑΤΑΞΕΙΣ ΤΗΣ Ο∆ΗΓΙΑΣ 1999/5/ΕΚ.
Français
[French]
Par la présente 3Com Corporation déclare que
l'appareil RLAN device est conforme aux exigences
essentielles et aux autres dispositions pertinentes de
la directive 1999/5/CE.
Italiano
[Italian]
Con la presente 3Com Corporation dichiara che
questo RLAN device è conforme ai requisiti essenziali
ed alle altre disposizioni pertinenti stabilite dalla
direttiva 1999/5/CE.
Latviski
[Latvian]
Ar šo 3Com Corporation deklarç, ka RLAN device atbilst
Direktîvas 1999/5/EK bûtiskajâm prasîbâm un citiem ar to
saistîtajiem noteikumiem.
Lietuviø
[Lithuanian]
Šiuo 3Com Corporation deklaruoja, kad šis RLAN
device atitinka esminius reikalavimus ir kitas
1999/5/EB Direktyvos nuostatas.
140
Nederlands
[Dutch]
Hierbij verklaart 3Com Corporation dat het toestel
RLAN device in overeenstemming is met de essentiële
eisen en de andere relevante bepalingen van richtlijn
1999/5/EG.
Malti
[Maltese]
Hawnhekk, 3Com Corporation, jiddikjara li dan RLAN
device jikkonforma mal-htigijiet essenzjali u ma
provvedimenti ohrajn relevanti li hemm fid-Dirrettiva
1999/5/EC.
Magyar
[Hungarian]
Alulírott, 3Com Corporation nyilatkozom, hogy a RLAN
device megfelel a vonatkozó alapvetõ
követelményeknek és az 1999/5/EC irányelv egyéb
elõírásainak.
Polski
[Polish]
Niniejszym 3Com Corporation oświadcza, że RLAN
device jest zgodny z zasadniczymi wymogami oraz
pozostałymi stosownymi postanowieniami Dyrektywy
1999/5/EC.
Português
[Portuguese]
3Com Corporation declara que este RLAN device está
conforme com os requisitos essenciais e outras
disposições da Directiva 1999/5/CE.
Slovensko
[Slovenian]
3Com Corporation izjavlja, da je ta RLAN device v
skladu z bistvenimi zahtevami in ostalimi relevantnimi
določili direktive 1999/5/ES.
Slovensky
[Slovak]
3Com Corporation týmto vyhlasuje, ze RLAN device
spĺňa základné poziadavky a všetky príslušné
ustanovenia Smernice 1999/5/ES.
Suomi
[Finnish]
3Com Corporation vakuuttaa täten että RLAN device
tyyppinen laite on direktiivin 1999/5/EY oleellisten
vaatimusten ja sitä koskevien direktiivin muiden
ehtojen mukainen.
A copy of the signed Declaration of Conformity can be downloaded from the Product Support web page for
the 3Com OfficeConnect ADSL Wireless 54 Mbps 11g Firewall Router at http://www.3Com.com.
Also available at http://support.3com.com/doc/WL-552_EU_DOC.pdf.
EU - RESTRICTIONS FOR USE
IN THE 2.4GHZ BAND
This device may be operated indoors in all countries of the European Community using the 2.4GHz band:
Channels 1 - 13, except where noted below.
■
In Italy the end-user must apply for a license from the national spectrum authority to operate this device
outdoors.
■
In Belgium outdoor operation is only permitted using the 2.46 - 2.4835 GHz band: Channel 13.
■
In France outdoor operation is only permitted using the 2.4 - 2.454 GHz band: Channels 1 - 7.
BRAZIL RF COMPLIANCE
Este equipamento opera em caráter secundário, isto é, não tem direito a proteção contra interferência
prejudicial, mesmo de estações do mesmo tipo, e não causar interferência a sistema operando em caráter
primário.
DGT STATEMENT
注意 !
依據 低功率電波輻射性電機管理辦法
第十二條 經型式認證合格之低功率射頻電機, 非經許可, 公司 商號或使用者均不得擅自變更頻率,
加大功率或變更原設計之特性及功能。
第十四條 低功率射頻電機之使用不得影響飛航安全及干擾合法通信; 經發現有干擾現象時,應立即停
用, 並改善至無干擾時方得繼續使用。
141
前項合法通信,指依電信規定作業之無線電信。 低功率射頻電機須忍受合法通信或工業, 科學及醫療用
電波輻射性電機設備之干擾。
RTTE01:
1. 本機限在不干擾合法電台與不受被干擾保障條件下於室內使用
2. 為減少電波干擾,請妥適使用
142
INDEX
128-bit WEP 46
128-bit WEP Screen 46
1483 Bridge Mode 55
64-bit WEP Screen 47
DNS Screen 55
DSL mode 29
Dynamic Domain Server (DDNS) Screen 70
Dynamic IP Address 34
Dynamic/Fixed IP for Bridge Mode Screen 35, 55
DYNDNS 70
A
E
Access Control Screen 62
Add PC Screen 63
Add Schedule Rule Screen 65
Addresses
IP 85
Admin Password Screen 75
ADSL Status Screen 77
Advanced Screen 68
Automatic Addressing 87
Editing DHCP Clients List Screen 42
Encryption Screen 44
Encryption, disabling 45
Numbers
B
Backup/Restore Settings Screen 74
Bridge Mode for Single PC Screen 53
Bridged Mode Configuration Screen 33
C
Cable Specifications 91
Channels 111
Configuration Summary Screen 37
Connection Type Screen 29, 50
Conventions
notice icons, About This Guide 8
text, About This Guide 8
D
DDNS 70
DHCP 87
DHCP Clients List 42
DHCP server 25, 42
disabling 26
DMZ Screen 67
DNS 24
F
Firewall Screen 59
Forgotten Password 80
H
Hostname
configuring 56
Hostname and MAC Address Screen 56
I
Internet
addresses 85
Internet Properties Screen 26
Internet Protocol (TCP/IP) Properties Screen 24
IP Address 41, 85
IPSEC 68
L
LAN Settings Screen 41
LED 14
LEDs 14
Local Area Properties Screen 24
Logs Screen 77
M
MAC Address 56
142
INDEX
configuring 56
MAC Address Filtering Screen 66
mode 30
N
NAT (Network Address Translation) 68
NAT-T (NAT Traversal) 68
Network
addresses 85
Networking
wireless 81
NIC
wireless 14
P
Password 27, 75
Poison Reverse 58
PPPoA 31
PPPoA Screen 31
PPPoA Settings Screen 52
PPPoE 26, 30, 31
PPPoE Screen 30
PPPoE Settings Screen 51
R
Remote Admin 68
Reset to Factory Default Screen 73
Reset to Factory Defaults 80
Restart Router Screen 73
RFC 1483 Bridged Mode 32, 53
RFC 1483 Routed Mode 34
RIP (Routing Information Protocol) 57
RIP Parameter Screen 58
Router Login Screen 28
Routing Mode Screen 34
Routing Table Screen 59
S
Schedule Rule Screen 65
Setup Wizard 27
SNMP Community Screen 71
SNMP Trap Screen 72
Special Applications Screen 60
Specifications
technical 89
SSID 31, 32, 33, 35, 36, 43
Static Addressing 87
Static Route Parameters Screen 57
Status Screen 28, 40
Subnet Mask 85
T
TCP/IP 23, 25, 85
Technical
specifications 89
standards 89
Time and Time Zone screen 76
TZO.com 70
U
Universal Plug and Play 68
Upgrade Screen 74
URL Blocking Screen 64
V
Virtual Servers Screen 61
VPI/VCI 30, 32, 33, 34, 36
W
WAN Ping Blocking 68
WDS 49
Web Browser Location Field 27
Web Proxy 26
WiFi Protected Access 45, 48
Wireless
networking 81
NIC 14
Wireless Configuration Screen 43
Wireless Settings Screen 31, 32, 33, 35, 36, 43
Wireless WDS Settings Screen 49
WPA (with RADIUS Server) Screen 48
WPA-PSK (no server) Screen 45