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CT-5621T
ADSL2+ Multi-port Router
User’s Manual
Version A3.2, November 23, 2007
261055-015
Warning
Before servicing or disassembling this equipment, always disconnect all power and telephone lines from the device
Use an appropriate power supply and a UL Listed telephone line cord. Specification of the power supply is clearly stated in
Appendix C
Preface
This manual provides information to network administrators. It covers the installation, operation and applications of the ADSL2+ multi-port router.
The individual reading this manual is presumed to have a basic understanding of telecommunications. For product update, new product release, manual revision, software upgrade, technical support, etc., visit Comtrend Corporation at http://www.comtrend.com
This document is subject to change without notice.
Copyright
Copyright© 2007 Comtrend Corporation. All rights reserved. The information and messages contained herein are proprietary to Comtrend Corporation. No part of this document may be translated, transcribed, reproduced, in any form, or by any means without prior written permission by Comtrend Corporation.
Technical support
If you find the product to be inoperable or malfunctioning, please contact a technical support engineer for immediate service by email at [email protected]
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Table of Contents
PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)............................................39
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3
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Chapter 1 Introduction
The CT-5621T is an ADSL router with four 10/100 Base-T Ethernet ports and a single USB port providing wired LAN connectivity. The CT-5621T ADSL2+ multi-port router provides state of the art security features such as Firewall and
VPN passthrough. The CT-5621T is designed for both residential and business applications that require wired connectivity to an ADSL broadband network. The
CT-5621T supports up to 16 contiguous virtual connections, allowing for multiple simultaneous connections.
1.1 Features
• UPnP
• RADIUS client
• IP /MAC address filtering
• Static route/RIP/RIP v2 routing functions
• Dynamic IP assignment
• IP QoS
• NAT/PAT
• IGMP Proxy
• DHCP Server/Relay/Client
• DNS Proxy
• Auto PVC configuration
• Per-VC packet level QoS
• Up to 16 VCs
• Web-based management
• Remote configuration and upgrade
• Configuration backup and restoration
• FTP server
• TFTP server
• TR-069
• TR-068
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1.2 Application
The following diagram depicts the application of the CT-5621T multi-port router.
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1.3 Front Panel LED Indicators
The front panel LED indicators are pictured below. The table that follows provides detailed explanations of their function.
LED
POWER
LAN
4x~1x
Color Mode Function
Green On The router is powered up.
Off The router is powered down.
Red On POST (Power On Self Test) failure (not bootable) or
Device malfunction.
A malfunction is any error of internal sequence or state that will prevent the device from connecting to the
DSLAM or passing customer data. This may be identified at various times such after power on or during operation through the use of self testing or in operations which result in a unit state that is not expected or should not occur.
Green On
Off
An Ethernet Link is established.
An Ethernet Link is not established.
Green Blink Data transmitting or receiving over LAN.
USB
ADSL
Green On
Off
A USB link is established.
A USB link is not established.
Green Blink Data transmitting or receiving over USB.
Green On
Off
DSL good sync
Green Blink
Modem power off
Flashing Green = DSL attempting sync
Flashing at 2 Hz with a 50% duty cycle when trying to detect carrier signal
Flashing at 4 Hz with a 50% duty cycle when the carrier has been detected and the modem is trying to train.
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INTERNET
Green
On IP connected and no traffic detected.
Off
Modem power off, modem in bridged mode or ADSL connection not present.
Green Blinking
IP connected and IP Traffic is passing thru the device
(either direction)
Red On
Device attempted to become IP connected and failed
(no DHCP response, no PPPoE response, PPPoE authentication failed, no IP address from IPCP, etc.)
For bridged mode, the indicator light is off.
If the IP or PPPoE session is dropped due to an idle timeout, the light will remain green if an ADSL connection is still present. If the session is dropped for any other reason, the light is turned off. The light will turn red when it attempts to reconnect and DHCP or
PPPoE fails.
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Chapter 2 Installation
In the rear panel, there is a reset button. To load the factory default settings, hold the reset button down for at least 5 seconds.
Reset button
Power button
Follow the instructions below to complete the hardware connections.
Connection to LINE port
If you wish to connect both the router and a telephone, connect the LINE port to a
POTS splitter with a RJ11 connection cable.
Connection to LAN port
To connect to a hub or PC, use a RJ45 cable. You can connect the router to up to four LAN devices. The ports are auto-sensing MDI/X and either straight-through cable or crossover cable can be used.
Connection to USB port
Connect the USB port to a PC with a standard USB cable.
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Connection to Power
Connect the Power jack to the shipped power cord. Attach the power adapter to the wall outlet or other AC source. After all connections have been made, press the power-switch in to turn the device on. After power on, the router performs a self-test. Wait for a few seconds until the test is finished, then the router will be ready to operate.
Caution 1: If the router fails to power up, or it malfunctions, first verify that the power supply is connected correctly. Then power it on again. If the problem persists, contact our technical support engineers.
Caution 2: Before servicing or disassembling this equipment always disconnect all power cords and telephone lines from the wall outlet.
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2.2 USB Device Driver Auto-run Installation
Before you connect your router’s USB cable to your PC, you must load the ADSL
USB drivers. The auto-run USB driver installation supports Win ME, Win 98, Win
2000, Win XP (32 bit) and Vista (32 bit). For those using Windows XP 64 bit, the driver needs to be installed manually (please see section 2.3 below for details), and the driver is also enclosed on the CD-ROM.
To connect the router to a PC using the USB interface, you need to use a standard
USB cable and install the USB interface software. Follow the steps below:
STEP 1: Insert the Installation disk and select the Install USB Driver option.
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STEP 2: The following screen will be displayed. Click the Next button to continue.
STEP 3: When the screen displays as below, wait until the drivers are fully installed.
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STEP 4: Click the Finish button, when the screen displays as below.
STEP 5: Installation is complete.
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2.3 USB Driver Manual Installation
(64bit OS)
Before you connect your router’s USB cable to your PC, you must load the ADSL
USB drivers. This manual USB driver installation supports Windows XP 64 bit.
To connect the router to a PC using the USB interface, you need to use a standard
USB cable and install the USB interface software. Follow the steps below:
STEP 1: Connect the USB router to the PC by plugging the flat connector of a standard USB cable into your PC, and plugging the square connector into the router. The screen will display as below:
STEP 2: When the screen displays as below, select install from a list of specific
location (Advanced) and click the Next button.
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Note: This screen won’t be displayed if the USB Driver has been previously un/installed.
STEP 3: If you are installing the software from a disk, insert the disk.
Note: When the auto-run screen pops up click Exit and continue with the manual installation process (see below).
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STEP 4: Select the location of the file using the Browse button. Normally, the file is on the CD-ROM shipped with the device.
STEP 5: Locate the Vista folder, and click the OK button.
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STEP 6: When the screen displays as below, click the NEXT button.
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STEP 7: Click the Finish button, when the screen displays as below.
STEP 8: Installation is complete.
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Chapter 3 Login via the Web Browser
You can use a web browser, such as Microsoft Internet Explorer, to access the device remotely. The web-based user interface is best viewed with Microsoft
Internet Explorer (version 5.0 and later).
The default user account is assigned with user name root and password 12345.
The user can change the default password later when logged in to the device.
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The default IP address of the CT-5621T (LAN port) is 192.168.1.1. To configure the CT-5621T for the first time, the configuration PC must have a static IP address within the 192.168.1.x subnet. Follow the steps below to configure your PC IP address to use subnet 192.168.1.x.
STEP 1: Right click on the Local Area Connection under the Network and Dial-Up connection window and select Properties.
STEP 2: Enter the TCP/IP screen and change the IP address to the domain of
192.168.1.x/24.
STEP 3: Click OK to submit the settings.
STEP 4: Start your Internet browser and type the IP address for the router
(192.168.1.1) in the Web address bar.
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Perform the following steps to bring up the Web user interface and configure the
CT-5621T. To log on to the system from the Web browser, follow the steps below:
STEP 1: Start your Internet browser. Type the IP address for the router in the Web address field. For example, if the IP address is 192.168.1.1,
type http://192.168.1.1
STEP 2: You will be prompted to enter your user name and password. Type root in the user name and 12345 in the password field, and click OK. These values can be changed later in the Web User Interface by selecting the
Management link.
STEP 3: After successfully logging in, you will reach the Quick Setup menu.
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Shown here is the Device Info screen for your reference.
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During power on initialization, the CT-5621T initializes all configuration attributes to default values. It will then read the configuration profile from the Permanent
Storage section on the flash memory. The default attributes are overridden when identical attributes with different values are configured. The configuration profile in Permanent Storage can be created via the Web user interface, telnet user interface, or other management protocols. The factory default configuration can be restored either by pushing the reset button for more than five seconds, or by clicking the Restore Default Configuration option in the Restore Settings screen.
The following default settings are present when setting up the router for the first time. The PC running the browser can be attached to the Ethernet. z LAN port IP address: 192.168.1.1 z Local administrator account name: root z Local administrator account password: 12345 z Local non- administrator account name: user z Local non- administrator account password: user z Remote WAN access: disabled z Remote WAN access account name: support z Remote WAN access account password: support z NAT and firewall: enabled z DHCP server on LAN interface: enabled z WAN IP address: none
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Chapter 4 Device Info
After login, the Quick Setup screen appears as shown.
Note: The selections available on the left side of menu are based upon the first configured connection and default user access settings.
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4.1 WAN
Click Device Info on the menu bar to display the WAN option. Then, click WAN on the Device Info menu bar to display the configured PVC(s) and the status.
Con. ID Shows the connection ID
Category Shows the ATM service classes
Service Shows the name for WAN connection
Interface Shows connection interfaces
Protocol Shows the connection type, such as PPPoE, PPPoA, etc.
IGMP
Nat
Shows the state of the IGMP function
Shows if the Network Address Translation (NAT) is enabled or disabled.
QoS
State
Shows if IGMP IP QoS is enabled or disabled
Shows the connection state of the WAN connection
Status Lists the status of DSL link
IP Address Shows IP address for WAN interface
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4.2 Statistics
This menu option provides information on LAN, WAN, ATM and ADSL connections.
Note: These statistics are updated every 15 seconds.
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The LAN Statistics screen shows byte transfer, packet transfer, Error and Drop statistics for each LAN interface (Ethernet and USB).
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Protocol Shows the connection type, such as PPPoE, PPPoA, etc.
Received/Transmitted
-
Bytes
-
Pkts
-
Errs
- Drops
Number of Bytes Received/Transmitted
Number of packets Received/Transmitted
Number of errored packets Received/Transmitted
Number of dropped packets Received/Transmitted
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The following figure shows the ATM statistics screen.
ATM Interface Statistics
In Octets
Field Description
Number of received octets over the interface
Out Octets Number of transmitted octets over the interface
In Errors
In Unknown
Number of cells dropped due to uncorrectable HEC errors
Number of received cells discarded during cell header validation, including cells with unrecognized VPI/VCI values, and cells with invalid cell header patterns. If cells with undefined PTI values are discarded, they are also counted here.
In Hec Errors Number of cells received with an ATM Cell Header HEC error
In Invalid Vpi Vci Errors Number of cells received with an unregistered VCC address
In Port Not Enable Errors Number of cells received on a port that has not been enabled
In PTI Errors Number of cells received with an ATM header Payload
Type Indicator (PTI) error
In Idle Cells
In Circuit Type Errors
Number of idle cells received
Number of cells received with an illegal circuit type
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In Oam RM CRC Errors Number of OAM and RM cells received with CRC errors
In GFC Errors Number of cells received with a non-zero GFC
AAL5 Interface Statistics
Field Description
In Octets
Out Octets
In Ucast Pkts
Out Ucast Pkts
Number of received AAL5/AAL0 CPCS PDU octets
Number of AAL5/AAL0 CPCS PDU octets transmitted
Number of received AAL5/AAL0 CPCS PDU passed to a higher-layer
Number of received AAL5/AAL0 CPCS PDU received from a higher layer for transmission
In Errors
Out Errors
In Discards
Number of received AAL5/AAL0 CPCS PDU in error. The types of errors counted include CRC-32 errors.
Number of received AAL5/AAL0 CPCS PDU that could not be transmitted due to errors.
Number of received AAL5/AAL0 CPCS PDU discarded due to an input buffer overflow condition.
This field is not currently used Out Discards
AAL5 VCC STATISTICS
Field Description
CRC Errors
SAR TimeOuts
Number of PDUs received with CRC-32 errors
Number of partially re-assembled PDUs which were discarded because they were not fully re-assembled within the required period of time. If the re-assembly time is not supported then, this object contains a zero value.
Over Sized SDUs Number of PDUs discarded because the corresponding SDU was too large
Short Packets Errors Number of PDUs discarded because the PDU length was less than the size of the AAL5 trailer
Length Errors Number of PDUs discarded because the PDU length did not match the length in the AAL5 trailer
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The following figure shows the ADSL Network Statistics screen. Within the ADSL
Statistics window, a bit Error Rate Test can be started using the ADSL BER Test button. The Reset button resets the statistics.
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Mode
Field Description
Line Coding format, that can be selected G.dmt, G.lite,
T1.413, ADSL2
Type
Line Coding
Status
Link Power State
SNR Margin (dB)
Attenuation (dB)
Channel type Interleave or Fast
Trellis On/Off
Lists the status of the DSL link
Link output power state.
Signal to Noise Ratio (SNR) margin
Estimate of average loop attenuation in the downstream direction.
Output Power (dBm) Total upstream output power
Attainable Rate (Kbps) The sync rate you would obtain.
Rate (Kbps)
Super Frames
Current sync rate.
Total number of super frames
Super Frame Errors
RS Words
Number of super frames received with errors
Total number of Reed-Solomon code errors
RS Correctable Errors Total Number of RS with correctable errors
RS Uncorrectable Errors Total Number of RS words with uncorrectable errors
HEC Errors
OCD Errors
LCD Errors
Total ES:
Total SES:
Total UAS:
Total Number of Header Error Checksum errors
Total Number of out-of-cell Delineation errors
Total number of Loss of Cell Delineation
Total Number of Errored Seconds
Total Number of Severely Errored Seconds
Total Number of Unavailable Seconds
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4.2.5 Route
Choose Route to display the routes that the route information has learned.
4.2.6 ARP
Click ARP to display the ARP information.
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4.2.7 DHCP
Click DHCP to display the DHCP information.
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Chapter 5 Quick Setup
The Quick Setup allows the user to configure the ADSL router for DSL connectivity and Internet access. It also guides the user though the WAN network setup first and then the LAN interface setup. You can either manually customize the router or follow the online instruction to set up the router.
The CT-5621T ADSL router supports the following five network operating modes over an ATM PVC WAN interface. z PPP over Ethernet (PPPoE) z PPP over ATM (PPPoA) z MAC Encapsulated Routing (MER) z IP over ATM (IPoA) z Bridging
The following configuration considerations apply: z The WAN network operating mode operation depends on the service provider’s configuration on the Central Office side and Broadband Access
Server for the PVC z If the service provider provides PPPoE service, then the connection selection depends on whether the LAN-side device (typically a PC) is running a PPPoE client or whether the CT-5621T is to run the PPPoE client. The CT-5621T can support both cases simultaneously. z If some or none of the LAN-side devices do not run PPPoE client, then select
PPPoE. If every LAN-side device is running a PPPoE client, then select Bridge
In PPPoE mode, CT-5621T also supports pass-through PPPoE sessions from the LAN side while simultaneously running a PPPoE client fro non-PPPoE LAN devices. NAT and firewall are always enabled when PPPoE mode is selected, but they can be enabled or disabled by the user when MER or IPoA is selected,
NAT and firewall are always disabled when Bridge mode is selected. z Depending on the network operating mode, and whether NAPT and firewall are enabled or disabled, the main panel will display or hide the NAPT/Firewall menu. For instance, at initial setup, the default network operating mode is
Bridge. The main panel will not show the NAPT and Firewall menu.
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Note: Up to sixteen PVC profiles can be configured and saved on the flash memory.
To activate a particular PVC profile, you need to navigate all the Quick Setup pages until the last summary page, then click on the Finish button and reboot the system.
5.1 Auto Quick Setup
The auto quick setup requires the ADSL link to be up. The ADSL router will automatically detect the PVC. You only need to follow the online instructions that you are prompted.
1. Select Quick Setup to display the DSL Quick Setup screen.
2. Click Next to start the setup process. Follow the online instructions to complete the setting. This procedure will skip some processes like PVC index, or encapsulation.
3. After the settings are complete, you can use the ADSL service.
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5.2 Manual Quick Setup
STEP 1: Click Quick Setup and un-tick the DSL Auto-connect checkbox to enable manual configuration of the connection type.
Un-tick this checkbox to enable manual setup and display the following screen.
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STEP 2: Enter the Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI).
Select Enable Quality Of Service if required. Click Next.
STEP 3: Choosing different connection types pops up different settings requests.
Enter appropriate settings that are requested by your service provider.
The following descriptions state each connection type setup separately.
Select Enable 802.1q (by ticking the box) if required, and input a number for the VLAN ID. Click on “Next” to go to next step.
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5.2.1 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)
1. Select the PPP over ATM (PPPoA) or PPP over Ethernet (PPPoE) radio button and click Next. The following screen appears:
PPP USERNAME/PPP PASSWORD
Give “PPP Username”, “PPP Password” and “PPPoE Service Name”, and then select the “Authentication Method” (AUTO/PAP/CHAP/MSCHAP). Please contact your ISP for the information. The WEB user interface allows a maximum of 256 characters in the PPP user name and a maximum of 32 characters in PPP password.
Encapsulation Mode
Choosing different connection types provides different encapsulation modes. z PPPoA- VC/MUX, LLC/ENCAPSULATION z PPPoE- LLC/SNAP BRIDGING, VC/MUX z MER- LLC/SNAP-BRIDGING, VC/MUX z IPoA- LLC/SNAP-ROUTING, VC MUX z Bridging- LLC/SNAP-BRIDGING, VC/MUX
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Disconnect if no activity
The CT-5621T can be configured to disconnect if there is no activity for a period of time by selecting the Dial on demand check box. When the checkbox is ticked, you need to enter the inactivity timeout period. The timeout period ranges from 1 minute to 4320 minutes.
PPP IP Extension
The PPP IP Extension is a special feature deployed by some service providers.
Unless your service provider specially requires this setup, do not select it.
The PPP IP Extension supports the following conditions: z Allows only one PC on the LAN z The public IP address assigned by the remote side using the PPP/IPCP protocol is actually not used on the WAN PPP interface. Instead, it is forwarded to the
LAN interface through DHCP. Only one PC on the LAN can be connected to the remote, since the DHCP server within the ADSL router has a single IP address to assign to a LAN device. z NAPT and firewall are disabled when this option is selected. z The ADSL router becomes the default gateway and DNS server to the PC through DHCP using the LAN interface IP address. z The ADSL router extends the IP subnet at the remote service provider to the
LAN PC. That is, the PC becomes a host belonging to the same IP subnet. z The ADSL router bridges the IP packets between WAN and LAN ports, unless the packet is addressed to the router’s LAN IP address.
Use Static IP Address
Unless your service provider specially requires this setup, do not select it.
If selected, enter your static IP address.
Enable PPP Debug Mode
Enable the PPPoE debug mode. The system will put more PPP connection information in System Log. But this is for debug, please don't enable in normal usage.
2. Click Next to display the screen on the following page.
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Enable IGMP Multicast checkbox: Tick the checkbox to enable IGMP multicast
(proxy). IGMP (Internet Group Membership Protocol) is a protocol used by IP hosts to report their multicast group memberships to any immediately neighboring multicast routers.
Enable WAN Service checkbox: Tick this item to enable the ATM service.
Untick it to stop the ATM service.
Service Name: This is user-defined.
3. After entering your settings, select Next. The following screen appears. This page allows the user to configure the LAN interface IP address, subnet mask and
DHCP server. If the user would like this ADSL router to assign dynamic IP address,
DNS server and default gateways to other LAN devices, select the button Enable
DHCP server on the LAN to enter the starting IP address and end IP address and
DHCP leased time.
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The Device Setup page allows the user to configure the LAN interface IP address and DHCP server. If the user would like this ADSL router to assign dynamic IP addresses, DNS server and default gateway to other LAN devices, select the radio box Enable DHCP server on the LAN to enter the starting IP address and end IP address and DHCP lease time. This configures the router to automatically assign
IP addresses, default gateway address and DNS server addresses to each of your
PCs.
Note 1: Enable DHCP Server Relay will not display if Firewall is enabled in the previous step.
Note 2: The router’s default IP address is 192.168.1.1 and the default private address range provided by the ISP server in the router is 192.168.1.2 through 192.168.1.254.
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4. Click Next to display the WAN Setup-Summary screen that presents the entire configuration summary.
• Click Save/Reboot if the settings are correct.
• Click Back if you wish to modify the settings.
5. After clicking Save/Reboot, the router will save the configuration to the flash memory, and reboot. The Web UI will not respond until the system is brought up again. After the system is up, the Web UI will refresh to the Device Info page automatically. The CT-5621T is ready for operation and the front panel LED indicators will display as described in section 1.3.
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To configure MER, do the following.
1. Select Quick Setup and click Next.
2. Enter the PVC Index provided by the ISP and click Next.
3. Select the MAC Encapsulation Routing (MER) radio button, and click Next. The following screen appears.
Enter information provided to you by your ISP to configure the WAN IP settings.
Notice: DHCP can be enabled for PVC in MER mode if Obtain an IP address
automatically is chosen. Changing the default gateway or the DNS effects the whole system. Configuring them with static values will disable the automatic assignment from DHCP or other WAN connection.
If you configure static default gateway over this PVC in MER mode, you must enter the IP address of the remote gateway in the “Use IP address”. The “Use WAN interface” is optional.
The ISP should provide the values that must be entered in the entry fields.
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4. Click Next to display the following screen.
Enable NAT checkbox: If the LAN is configured with a private IP address, the user should select this checkbox. The NAT submenu on the left side main panel will be displayed after reboot. The user can then configure NAT-related features after the system comes up. If a private IP address is not used on the LAN side, this checkbox should be de-selected to free up system resources for better performance. When the system comes back after reboot, the NAT submenu will not be displayed on the left main panel.
Enable Firewall checkbox: If the firewall checkbox is selected, the Security submenu on the left side main panel will be displayed after system reboot. The user can then configure firewall features after the system comes up. If firewall is not used, this checkbox should be de-selected to free up system resources for better performance. When system comes back after reboot, the Security submenu will not be displayed on the left main panel.
Enable IGMP Multicast: Tick the checkbox to enable IGMP multicast (proxy).
IGMP (Internet Group Membership Protocol) is a protocol used by IP hosts to report their multicast group memberships to any immediately neighboring multicast routers.
Enable WAN Service: Tick the checkbox to enable the WAN service. If this item is not selected, you will not be able to use the WAN service.
Service Name: This is User-defined.
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5. Upon completion, click Next. The following screen appears. The WAN
Setup-Summary screen presents the entire configuration summary.
• Click Save/Reboot if the settings are correct.
• Click Back if you wish to modify the settings.
After clicking Save/Reboot, the router will save the configuration to the flash memory, and reboot. The Web UI will not respond until the system is brought up again. After the system is up, the Web UI will refresh to the Device Info page automatically. The CT-5621T is ready for operation and the front panel LED indicators will display as described in section 1.3.
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To configure IP Over ATM,
1. Select Quick Setup and click Next.
2. Enter the PVC Index and click Next.
3. Type the VPI and VCI values provided by the ISP and click Next.
4. Select the IP over ATM (IPoA) radio button and click Next.
The following screen will appear.
Notice that DHCP is not supported over IPoA. The user must enter the IP address or WAN interface for the default gateway setup, and the DNS server addresses provided by the ISP.
5. Click Next. The following screen appears.
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Enable NAT checkbox
If the LAN is configured with a private IP address, the user should select this checkbox. The NAT submenu on the left side main panel will be displayed after reboot. The user can then configure NAT-related features after the system comes up. If a private IP address is not used on the LAN side (i.e. the LAN side is using a public IP), this checkbox should be de-selected. When the system comes back after reboot, the NAT submenu will not be displayed on the left main panel.
Enable Firewall checkbox
If the firewall checkbox is selected, the Security submenu on the left side main panel will be displayed after system reboot. The user can then configure firewall features after the system comes up. If firewall is not used, this checkbox should be de-selected to free up system resources for better performance. When system comes back after reboot, the Security submenu will not be displayed on the left main panel.
6. Click Next to display the following screen. The Device Setup page allows the user to configure the LAN interface IP address and DHCP server if the user would like this ADSL router to assign dynamic IP addresses, DNS server and default gateway to other LAN devices. Select the button Enable DHCP server on the LAN to enter the starting IP address and end IP address and DHCP lease time.
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The user must configure the IP Address and the Subnet Mask. To use the DHCP service on the LAN, select the Enable DHCP server checkbox, and enter the Start
IP addresses, the End IP address and DHCP lease time. This configures the router to automatically assign IP addresses, default gateway address and DNS server addresses to each of your PCs.
Note 1: Enable DHCP Server Relay will not display if Firewall is enabled in the previous step.
Note 2: The router’s default IP address is 192.168.1.1 and the default private address range provided by the ISP server in the router is 192.168.1.2 through
192.168.1.254.
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7. Click the Next button to continue. The following screen will be displayed.
8. After clicking Save/Reboot, the router will save the configuration to the flash memory, and reboot. The Web UI will not respond until the system is brought up again. After the system is up, the Web UI will refresh to the Device Info page automatically. The CT-5621T is ready for operation and the front panel LED indicators will display as described in section 1.3.
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5.2.4 Bridging
Select the bridging mode. To configure Bridging, do the following.
1. Select Quick Setup and click Next.
2. Enter the PVC Index and click Next.
3. Type in the VPI and VCI values provided by the ISP and click Next.
4. Select the Bridging radio button and click Next. The following screen appears.
To use the bridge service, tick the checkbox, Enable Bridge Service, and enter the service name.
5. Click the Next button to continue. Enter the IP address for the LAN interface.
The default IP address is 192.168.1.1. The LAN IP interface in bridge operating mode is needed for local users to manage the ADSL router. Notice that there is no
IP address for the WAN interface in bridge mode, and the remote technical support cannot access the ADSL router.
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6. Click the Next button to continue. The following screen will be displayed.
The WAN Setup-Summary screen presents the entire configuration summary.
Click Save/Reboot if the settings are correct. Click Back if you wish to modify the settings.
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Chapter 6 Advanced Setup
This chapter explains: WAN, LAN, Routing, DSL and Port Mapping……
Note: Shown below for your reference are the available menu options for each different configuration.
This screenshot is for Mer and IPoA encapsulations.
This screenshot is for PPPoE and PPPoA encapsulations.
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This screenshot is for Bridge encapsulation.
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6.1 WAN
VlanID • This function means one can add an 802.1Q VLAN tag on
PPPoE/MER or Bridge mode.
It means the packets are sent to WAN and a specific VlanID
(802.1Q tag) will be added in the Ethernet header. The VlanID shows which 802.1Q tag will be added.
Please reference Section 4.1 for further information.
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6.2 LAN
Configure the DSL Router IP Address and Subnet Mask for LAN interface. Save button only saves the LAN configuration data. Save/Reboot button saves the LAN configuration data and reboots the router to make the new configuration effective.
IP Address: Enter the IP address for the LAN port.
Subnet Mask: Enter the subnet mask for the LAN port.
Enable IGMP Snooping: Enable /Disable the function that is IGMP Snooping.
Standard Mode: In standard mode, as in all prior releases, multicast traffic will flood to all bridge ports when there is no client subscribes to any multicast group – even when IGMP snooping is enabled.
Blocking Mode: In blocking mode, the multicast data traffic will be blocked and not flood to all bridge ports when there is no client subscription to any multicast group.
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To configure a secondary IP address for the LAN port, click the box as shown below.
IP Address: Enter the secondary IP address for the LAN port.
Subnet Mask: Enter the secondary subnet mask for the LAN port.
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6.3 NAT
To display the NAT function, you need to enable the NAT feature in the WAN Setup.
Virtual Server allows you to direct incoming traffic from WAN side (identified by
Protocol and External port) to the Internal server with private IP address on the
LAN side. The Internal port is required only if the external port needs to be converted to a different port number used by the server on the LAN side. A maximum 32 entries can be configured.
To add a Virtual Server, simply click the Add button. The following will be displayed.
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Select a Service
Or
Custom Server
User should select the service from the list.
Or
User can enter the name of their choice.
Server IP Address Enter the IP address for the server.
External Port Start Enter the starting external port number (when you select
Custom Server). When a service is selected the port ranges
External Port End are automatically configured.
Enter the ending external port number (when you select
Custom Server). When a service is selected the port ranges are automatically configured.
Protocol User can select from: TCP, TCP/UDP or UDP.
Internal Port Start Enter the internal port starting number (when you select
Custom Server). When a service is selected the port ranges are automatically configured
Internal Port End Enter the internal port ending number (when you select
Custom Server). When a service is selected the port ranges are automatically configured.
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Some applications require that specific ports in the Router’s firewall be opened for access by the remote parties. Port Trigger dynamically opens up the ‘Open Ports’ in the firewall when an application on the LAN initiates a TCP/UDP connection to a remote party using the ‘Triggering Ports’. The Router allows the remote party from the WAN side to establish new connections back to the application on the LAN side using the ‘Open Ports’. A maximum 32 entries can be configured.
To add a Trigger Port, simply click the Add button. The following will be displayed.
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Select an Application
Or Custom Application
Trigger Port Start
Trigger Port End
Trigger Protocol
Open Port Start
Open Port End
Open Protocol
User should select the application from the list.
Or User can enter the name of their choice.
Enter the starting trigger port number (when you select custom application). When an application is selected the port ranges are automatically configured.
Enter the ending trigger port number (when you select custom application). When an application is selected the port ranges are automatically configured.
User can select from: TCP, TCP/UDP or UDP.
Enter the starting open port number (when you select custom application). When an application is selected the port ranges are automatically configured.
Enter the ending open port number (when you select custom application). When an application is selected the port ranges are automatically configured.
User can select from: TCP, TCP/UDP or UDP.
The DSL router will forward IP packets from the WAN that do not belong to any of the applications configured in the Virtual Servers table to the DMZ host computer.
Enter the computer’s IP address and click “Apply” to activate the DMZ host.
Clear the IP address field and click “Apply” to deactivate the DMZ host.
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6.3.4 ALG
SIP ALG is Application layer gateway. If the user has an IP phone(SIP) or VoIP gateway(SIP) behind the ADSL router, the SIP ALG can help VoIP packet passthrough the router (NAT enabled).
Note: SIP (Session Initiation Protocol, RFC3261) is the protocol of choice for most
VoIP (Voice over IP) phones to initiate communication. This ALG is only valid for SIP protocol running on UDP port 5060.
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6.4 Security
To display the Security function, you need to enable the firewall feature in the WAN
Setup.
IP filtering allows you to create a filter rule to identify outgoing/incoming IP traffic by specifying a new filter name and at least one condition below. All of the specified conditions in this filter rule must be satisfied for the rule to take effect. Click
‘Save/Apply’ to save and activate the filter.
Outgoing
Note: The default setting for Outgoing is Accepted.
To add a filtering rule, simply click the Add button. The following screen will be displayed.
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Filter Name
Protocol
Type a name for the filter rule.
User can select from: TCP, TCP/UDP, UDP or
ICMP.
Source IP address
Source Subnet Mask
Source Port (port or port:port)
Destination IP address
Enter source IP address.
Enter source subnet mask.
Enter source port number.
Enter destination IP address.
Destination Subnet Mask Enter destination subnet mask.
Destination port (port or port:port) Enter destination port number.
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Incoming
Note: The default setting for Incoming is Blocked.
To add a filtering rule, simply click the Add button. The following screen will be displayed.
To configure the parameters, please reference Outgoing table above.
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Parental control: allows parents, schools, and libraries to set access times for
Internet use.
To add a parental control, simply click the Add button.
The following screen will be displayed.
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Username:
MAC:
Input Internet access user name
Set the MAC address to access the Internet
Mon, Tue, Wed, Thu, Fri, Sat, Sun: Set which days that will have block restrictions to Internet access
Start, End Blocking Time: Set Internet block start and stop time
Mac Filtering is only available when Bridging PVC is configured.
Each network device has a unique MAC address. You can block or forward the packets based on the MAC addresses. The MAC Filtering Setup screen allows setting up the MAC filtering policy and the MAC filtering rules. MAC Filtering is only effective on ATM PVCs configured in Bridge mode.
The policy FORWARDED means that all MAC layer frames will be FORWARDED except those matching with any of the specified rules in the following table.
BLOCKED means that all MAC layer frames will be BLOCKED except those matching with any of the specified rules in the following table. The default is
FORWARD; you change by clicking the Change Policy button.
Choose Add or Remove to configure MAC filtering rules. The following screen pops up when you click Add. Create a filter to identify the MAC layer frames by specifying at least one condition below. If multiple conditions are specified, all of them take effect. Click Apply to save and activate the filter.
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Option Description
Protocol type
Frame Direction:
WAN Interface
PPPoE, IPv4, IPv6, AppleTalk, IPX, NetBEUI, IGMP
Destination MAC Address Define the destination MAC address
Source MAC Address Define the source MAC address
Select a direction of the frame
Selects the interface that the MAC filter rule(s) will be applied. Only the WAN interface that is configured for bridged can be selected.
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6.5 Quality of Service
To display the QoS function, you need to enable the QoS feature in the WAN Setup.
Choose Add to configure network traffic classes. The following screen will be displayed:
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Traffic Class Name
Assign ATM Transmit Priority
Mark IP Precedence
Mark IP Type Of Service
Enter name for traffic class.
Select Low, Medium or High.
Select between 0-7. The lower the digit shows the higher the priority.
Select either: Normal Service, Minimize
Cost, Maximize Reliability, Maximize
Throughput, Minimize Delay
Mark 802.1p if 802.1q is enabled on WAN Select between 0-7. The higher the digit shows the higher the priority.
SET-1
Physical LAN Port
Protocol
Source IP Address
Source Subnet Mask
Source Port (port or port:port)
Select between ENET(1-4) and USB
User can select from: TCP, TCP/UDP,
UDP or ICMP.
Enter the source IP address.
Enter the subnet mask for the source IP address.
Enter source port number or port range.
Destination IP address
Destination Subnet Mask
Destination port (port or port:port)
Enter destination IP address.
Enter destination subnet mask.
Enter destination port number or port range.
SET-2
802.1p Priority Select between 0-7. The lower the digit shows the higher the priority
If the Enable Differentiated Service Configuration box is ticked (i.e. selected) the following screen will be displayed:
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The additional Items are explained here.
Assign Differentiated Services
Code Point (DSCP) Mark
The selected Code Point gives the corresponding priority to the packets that satisfies the rules set below.
Source MAC Address
Source MAC Mask
Destination MAC Address
Destination MAC Mask
A packet belongs to SET-1, if a binary-AND of its source MAC address with the Source MAC
Mask is equal to the binary-AND of the
Source MAC Mask and this field.
This is the mask used to decide how many bits are checked in Source MAC Address.
A packet belongs to SET-1 then the result that the Destination MAC Address of its header binary-AND to the Destination MAC
Mask must equal to the result that this field binary-AND to the Destination MAC Mask.
This is the mask used to decide how many bits are checked in Destination MAC Address.
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6.6 Routing
The Routing dialog box allows you to configure Default gateway, Static Route and
RIP.
If ‘Enable Automatic Assigned Default Gateway’ checkbox is selected, this router will accept the first received default gateway assignment from one of the
PPPoA, PPPoE or MER/DHCP enabled PVC(s). If the checkbox is not selected, enter the static default gateway AND/OR a WAN interface. Click ‘Save/Apply’ button to save it.
NOTE: If changing the Automatic Assigned Default Gateway from unselected to selected, You must reboot the router to get the automatic assigned default gateway.
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Choose Static Route to display the Static Route screen. The Static Route screen lists the configured static routes, and allows configuring static routes. Choose Add or Remove to configure the static routes.
To add static route, click the Add button to display the following screen. Enter the destination network address, subnet mask, gateway AND/OR available WAN interface then click Save/Apply to add the entry to the routing table.
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6.6.3 RIP
To activate RIP for the device, select the 'Enabled' radio button for Global RIP Mode.
To configure an individual interface, select the desired RIP version and operation, followed by placing a check in the 'Enabled' checkbox for the interface. Click the
'Save/Apply' button to save the configuration, and to start or stop RIP based on the
Global RIP mode selected.
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6.7 DNS
If 'Enable Automatic Assigned DNS' checkbox is selected, this router will accept the first received DNS assignment from one of the PPPoA, PPPoE or MER/DHCP enabled
PVC(s) during the connection establishment. If the checkbox is not selected, enter the primary and optional secondary DNS server IP addresses. Click 'Save' button to save the new configuration. You must reboot the router to make the new configuration effective.
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The Dynamic DNS service allows you to alias a dynamic IP address to a static hostname in any of the many domains, allowing your DSL router to be more easily accessed from various locations on the Internet.
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To add a dynamic DNS service, simply click the Add button.
The following screen will be displayed:
D-DNS provider
Hostname
Interface
Username
Password
Select a dynamic DNS provider from the list.
Enter the name for the dynamic DNS server.
Select the interface from the list.
Enter the username for the dynamic DNS server.
Enter the password for the dynamic DNS server.
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6.8 DSL
To access the DSL settings, first click On Advanced Setup and then click on DSL.
The DSL Settings dialog box allows you to select an appropriate modulation mode.
Option Description
G.dmt Enabled Sets G.Dmt if you want the system to use G.Dmt mode.
G.Lite Enabled Sets G.Lite if you want the system to use G.Lite mode.
T1.413 Enabled Sets the T1.413 if you want the system to use only T1.413 mode.
ADSL2 Enabled The device can support the functions of the ADSL2.
AnnexL Enabled The device can support/enhance the long loop test.
ADSL2+ Enabled The device can support the functions of the ADSL2+.
AnnexM ENABLED Covers a higher “upstream” data rate version, by making use of some of the downstream channels.
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Inner Pair
Outer Pair
Reserved only
Reserved only
Bitswap Enable Allows bitswapping function
SRA Enable Allows seamless rate adaptation
Port Mapping supports multiple port to PVC and bridging groups. Each group will perform as an independent network. To support this feature, you must create mapping groups with appropriate LAN and WAN interfaces using the Add button.
The Remove button will remove the grouping and add the ungrouped interfaces to the Default group.
As shown below, when you tick the Enable virtual ports on, all of the LAN interfaces will be grouped together as a default.
To add a port mapping group, simply click the Add button.
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To create a group from the list, first enter the group name and then select from the available interfaces on the list.
Automatically Add Clients With the Following DHCP Vendor IDs:
Add support to automatically map LAN interfaces including USB to PVC's using
DHCP vendor ID (option 60). The local DHCP server will decline and send the requests to a remote DHCP server by mapping the appropriate LAN interface. This will be turned on when PortMapping is enabled.
There are 4 PVCs (0/33, 0/36, 0/37, 0/38). 0/33 is for PPPoE and the others are for
IP setup-box (video). The LAN interfaces are ETH1, ETH2, ETH3, ETH4 and USB.
Port mapping configuration is:
1. Default: ETH1, ETH2, ETH3, ETH4 and USB.
2. Video: nas_0_36, nas_0_37 and nas_0_38. The DHCP vendor ID is "Video".
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The CPE DHCP server is running on "Default". And ISP's DHCP server is running on
PVC 0/36. It is for setup-box use only.
In the LAN side, PC can get IP address from CPE DHCP server and access Internet via PPPoE (0/33).
If the setup-box was connected with interface "ETH1" and send a DHCP request with vendor id "Video", CPE DHCP server will forward this request to ISP's DHCP server.
And CPE will change the port mapping configuration automatically. The port mapping configuration will become:
1. Default: ETH2, ETH3, ETH4 and USB.
2. Video: nas_0_36, nas_0_37, nas_0_38 and ETH1.
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6.10 Certificate
A certificate is a public key, attached with its owner’s information (company name, server name, personal real name, contact e-mail, postal address, etc) and digital signatures. There will be one or more digital signatures attached on the certificate, indicating that these signers have verified that the owner information of this certificate is correct.
6.10.1 Local
Click Create Certificate Request to generate a certificate signing request. The certificate signing request can be submitted to the vendor/ISP/ITSP to apply for a certificate. Some information must be included in the certificate signing request.
Actually, your vendor/ISP/ITSP will ask you to provide the information they require and to provide the information in the format they regulate. The explanation for each column in the following table is only for reference.
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Certificate Name
Common Name
A user-defined name for the certificate.
Usually, it is the fully qualified domain name for the machine.
Organization Name The exact legal name of your organization. Do not abbreviate.
State/Province Name The state or province where your organization is located. It cannot be abbreviated.
Country/Region Name The two-letter ISO abbreviation for your country.
Click Apply to generate a private key and a certificate signing request.
This page is used to paste the certificate content and the private key provided by your vendor/ISP/ITSP.
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6.10.2 Trusted CA
CA is the abbreviation for Certificate Authority. CA is a part of the X.509 system. It is itself a certificate, attached with the owner information of this certificate authority. But its purpose is not to do encryption/decryption. Its purpose is to sign and issue certificates; in order to prove the owner information of that certificate is correct.
Click Import Certificate to paste the certificate content of your trusted CA.
Generally speaking, the certificate content will be provided by your vendor/ISP/ITSP and is used to authenticate the Auto-Configuration Server (ACS) that the CPE will connect to.
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Chapter 7 Diagnostics
The Diagnostics menu provides feedback on the connection status of the CT-5621T and the ADSL link. The individual tests are listed below. If a test displays a fail status, click Rerun Diagnostic Tests at the bottom of this page to make sure the fail status is consistent. If the test continues to fail, click Help and follow the troubleshooting procedures.
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Test Description
Ethernet
Connection
Pass: indicates that the Ethernet interface from your computer is connected to the LAN port of your DSL Router. A flashing or solid green LAN LED on the router also signifies that an
Ethernet connection is present and that this test is successful.
Fail: Indicates that the DSL Router does not detect the
Ethernet interface on your computer.
USB Connection Pass: Indicates that the USB interface from your computer is connected to router properly.
Down: Indicates that the DSL Router does not detect the signal from USB interface.
ADSL
Synchronization
Pass: Indicates that the DSL modem has detected a DSL signal from the telephone company. A solid WAN LED on the router also indicates the detection of a DSL signal from the telephone company.
Fail: indicates that the DSL modem does not detect a signal from the telephone company’s DSL network. The WAN LED will stop blinking (i.e. training) and the LED will switch off.
Diagnostics screen with a PPPoE configured for your reference.
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Chapter 8 Management
The Management section of the CT-5621T supports the following maintenance functions and processes: z Settings z System log z TR-069 Client z Internet Time z Access Control z Update software z Save/Reboot
8.1 Settings
The Settings option allows you to back up your settings to a file, retrieve the setting file, and restore the settings.
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The Backup option under Management>Settings save your router configurations to a file on your PC. Click BACKUP Settings in the main window. You will be prompted to define the location of the backup file to save. After choosing the file location, click Backup Settings. The file will then be saved to the assigned location.
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The Update option under Management>Settings update your router settings using your saved files.
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Clicking the Restore Default Configuration option in the Restore Settings screen can restore the original factory installed settings.
NOTE 1: This entry has the same effect as the hardware reset-to-default button.
The CT-5621T board hardware and the boot loader support the reset to default button. If the reset button is continuously pushed for more than 5 seconds, the boot loader will erase the entire configuration data saved on the flash memory.
NOTE 2: Restoring system settings requires a system reboot. This necessitates that the current Web UI session be closed and restarted. Before restarting the connected PC must be configured with a static IP address in the 192.168.1.x subnet in order to configure the CT-5621T.
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Default settings
The CT-5621T default settings are z LAN port IP= 192.168.1.1, subnet mask = 255.255.255.0 z Local user name: root z Password: 12345 z Remote user name: support z Remote user password: support
After the Restore Default Configuration button is selected, the following screen appears. Close the DSL Router Configuration window and wait for 2 minutes before reopening your web browser. If necessary, reconfigure your PC IP address to match your new configuration.
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The System Log option under Management>Settings allows you to view the system events log, or to configure the System Log options. The default setting of system log is disabled. Follow the steps below to enable and view the system log.
1. Click Configure System Log to display the following screen.
2. Select from the desired Log options described in the following table, and then click SAVE/Apply.
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Option Description
Log Indicates whether the system is currently recording events. The user can enable or disable event logging. By default, it is disabled. To enable it, tick Enable and then Apply button.
Log level Allows you to configure the event level and filter out unwanted events below this level. The events ranging from the highest critical level
“Emergency” down to this configured level will be recorded to the log buffer on the CT-5621T SDRAM. When the log buffer is full, the newer event will wrap up to the top of the log buffer and overwrite the old event. By default, the log level is “Debugging,” which is the lowest critical level. The following log levels are z Emergency = system is unusable z Alert = action must be taken immediately z Critical = critical conditions z Error = Error conditions z Warning = normal but significant condition
Display
Level
Mode z Notice= normal but insignificant condition z Informational= provides information for reference z Debugging = debug-level messages
Emergency is the most serious event level, whereas Debugging is the least important. For instance, if the log level is set to Debugging, all the events from the lowest Debugging level to the most critical level
Emergency level will be recorded. If the log level is set to Error, only
Error and the level above will be logged.
Allows the user to select the logged events and displays on the View
System Log page for events of this level and above to the highest
Emergency level.
Allows you to specify whether events should be stored in the local memory, or be sent to a remote syslog server, or both simultaneously.
If remote mode is selected, view system log will not be able to display events saved in the remote syslog server.
When either Remote mode or Both mode is configured, the WEB UI will prompt the user to enter the Server IP address and Server UDP port.
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3. Click View System Log. The results are displayed as follows.
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WAN Management Protocol (TR-069) allows an Auto-Configuration Server (ACS) to perform auto-configuration, provision, collection, and diagnostics to this device.
Option Description
Inform Interval
ACS URL
The duration in seconds of the interval for which the CPE MUST attempt to connect with the ACS and call the Inform method.
URL for the CPE to connect to the ACS using the CPE WAN
Management Protocol. This parameter MUST be in the form of a valid HTTP or HTTPS URL. An HTTPS URL indicates that the
ACS supports SSL. The “host” portion of this URL is used by the
CPE for validating the certificate from the ACS when using certificate-based authentication.
ACS User Name
ACS Password
Username used to authenticate the CPE when making a connection to the ACS using the CPE WAN Management
Protocol. This username is used only for HTTP-based authentication of the CPE.
Password used to authenticate the CPE when making a connection to the ACS using the CPE WAN Management
Protocol. This password is used only for HTTP-based authentication of the CPE.
Connection Request Username used to authenticate an ACS making a Connection
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User Name Request to the CPE.
Connection Request Password used to authenticate an ACS making a Connection
Password Request to the CPE.
Get RPC Methods This method may be used by a CPE or ACS to discover the set of methods supported by the ACS or CPE it is in communication with. This list may include both standard TR-069 methods
(those defined in this specification or a subsequent version) and vendor-specific methods. The receiver of the response
MUST ignore any unrecognized methods. Click this button to force the CPE to immediately establish a connection to the
ACS.
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The Internet Time option under Management menu bar configures the Modem’s time. To automatically synchronize with Internet time servers, tick the corresponding box displayed on the screen. Then click Save/Apply.
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The Access Control option under Management menu bar configures the access-related parameters, including three parts: Services, IP Address, and
Passwords.
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8.5.1 Services
The Services option limits or opens the access services over the LAN or WAN.
These services are provided FTP, HTTP, ICMP, SSH (Security Socket Share), TELNET, and TFTP. Enable the service by checking the item in the corresponding checkbox, and then click Save/Apply.
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8.5.2 Access Addresses
The IP Addresses option limits the access by IP address. If the Access Control
Mode is enabled, only the allowed IP addresses can access the router. Before you enable it, configure the IP addresses by clicking the Add button.
Enter the IP address, subnet mask and select the interface. Then click
Save/Apply to allow the PC with this IP address managing the DSL Router.
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8.5.3 Passwords
The Passwords option configures the access passwords for the router. Access to your DSL router is controlled through three user accounts: root, support, and user. z “root” has unrestricted access to change and view configuration of your DSL
Router. z "support" is used to allow an ISP technician to access your DSL Router for maintenance and to run diagnostics. z "user" can access the Router, view configuration settings and statistics, as well as, update the router's software.
Use the fields below to enter up to 16 characters and click Apply to change or create passwords.
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The Update Software screen allows you to obtain an updated software image file from your ISP. Manual software upgrades from a locally stored file can be performed using the following screen.
Step 1: Obtain an updated software image file from your ISP.
Step 2: Enter the path to the image file location in the box below or click the
Browse button to locate the image file.
Step 3: Click the "Update Software" button once to upload the new image file.
NOTE: The update process takes about 2 minutes to complete, and your DSL Router will reboot.
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8.7 Save and Reboot
The Save/Reboot options saving the configurations and reboot the router. Close the DSL Router Configuration window and wait for 2 minutes before reopening your web browser. If necessary, reconfigure your PC IP address to match your new configuration.
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Appendix A: Firewall
Stateful Packet Inspection
Refers to an architecture, where the firewall keeps track of packets on each connection traversing all its interfaces and makes sure they are valid. This is in contrast to static packet filtering which only examines a packet based on the information in the packet header.
Denial of Service attack
Is an incident in which a user or organization is deprived of the services of a resource they would normally expect to have. Various DoS attacks the device can withstand are: ARP Attack, Ping Attack, Ping of Death, Land, SYN Attack, Smurf
Attack and Tear Drop.
TCP/IP/Port/Interface filtering rules
These rules help in the filtering of traffic at the Network layer i.e. Layer 3.
When a Routing interface is created "Enable Firewall" must be checked.
Navigate to Advanced Setup -> Security -> IP Filtering, web page.
Outgoing IP Filtering: Helps in setting rules to DROP packets from the LAN interface. By default if Firewall is Enabled all IP traffic from LAN is allowed. By setting up one or more filters, particular packet types coming from the LAN can be dropped.
Filter Name: User defined Filter Name.
Protocol: Can take on any values from: TCP/UDP, TCP, UDP or ICMP
Source IP Address/Source Subnet Mask: Packets with the particular “Source
IP Address/Source Subnet Mask" combination will be dropped.
Source Port: This can take on either a single port number or a range of port numbers. Packets having a source port equal to this value or falling within the range of port numbers (portX : portY) will be dropped.
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Destination IP Address/Destination Subnet Mask: Packets with the particular
"Destination IP Address/Destination Subnet Mask" combination will be dropped.
Destination Port: This can take on either a single port number or a range of port numbers. Packets having a destination port equal to this value or falling within the range of port numbers (portX : portY) will be dropped.
Examples:
Source Subnet Mask : 255.255.255.0
Dest. Sub. Mask
Dest. Port
: NA
: NA
This filter will Drop all TCP packets coming from LAN with IP Address/Sub. Mask
192.168.1.45/24 having a source port of 80 irrespective of the destination. All other packets will be Accepted.
Source Subnet Mask : 255.255.255.0
Dest. Sub. Mask : 255.255.255.0
This filter will drop all UDP packets coming from LAN with IP Address/Sub.Mask
192.168.1.45/24 and a source port in the range of 5060 to 6060, destined to 172.16.13.4/24 and a destination port in the range of 6060 to 7070.
Incoming IP Filtering:
Helps in setting rules to ACCEPT packets from the WAN interface. By default all incoming IP traffic from WAN is Blocked, if the Firewall is Enabled. By setting up one or more filters, particular packet types coming from the WAN can be Accepted.
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Filter Name: User defined Filter Name.
Protocol: Can take on any values from: TCP/UDP, TCP, UDP or ICMP
Source IP Address/Source Subnet Mask: Packets with the particular "Source
IP Address/Source Subnet Mask" combination will be accepted.
Source Port: This can take on either a single port number or a range of port numbers. Packets having a source port equal to this value or falling within the range of port numbers(portX : portY) will be accepted.
Destination IP Address/Destination Subnet Mask: Packets with the particular
"Destination IP Address/Destination Subnet Mask" combination will be accepted.
Destination Port: This can take on either a single port number or a range of port numbers. Packets having a destination port equal to this value or falling within the range of port numbers(portX : portY) will be accepted.
The WAN interface on which these rules apply needs to be selected by the user.
Examples:
Protocol : TCP
Dest. Port : NA
Selected WAN interface: mer_0_35/nas_0_35
This filter will ACCEPT all TCP packets coming from WAN interface mer_0_35/nas_0_35 with IP Address/Sub. Mask 210.168.219.45/16 having a source port of 80 irrespective of the destination. All other incoming packets on this interface are DROPPED.
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This rule will ACCEPT all UDP packets coming from WAN interface mer_0_35/nas_0_35 with IP Address/Sub.Mask 210.168.219.45/16 and a source port in the range of 5060 to 6060, destined to 192.168.1.45/24 and a destination port in the range of 6060 to 7070. All other incoming packets on this interface are DROPPED.
MAC Layer Filtering:
These rules help in the filtering of traffic at the Layer 2. MAC Filtering is only effective on ATM PVCs configured in Bridge mode. After a Bridge mode PVC is created, navigate to Advanced Setup -> Security -> MAC Filtering web page.
Global Policy:
When set to Forwarded the default filter behavior is to
Forward all MAC layer frames except those explicitly stated in the rules.
Setting it to Blocked changes the default filter behavior to Drop all
MAC layer frames except those explicitly stated in the rules.
To setup a rule:
Protocol Type: Can be PPPoE, IPv4, IPv6, AppleTalk, IPX, NetBEUI or IGMP.
Destination MAC Address: Of the form, XX:XX:XX:XX:XX:XX. Frames with this particular destination address will be Forwarded/Dropped depending on whether the Global Policy is Blocked/Forwarded.
Source MAC Address: Of the form, XX:XX:XX:XX:XX:XX. Frames with this particular source address will be Forwarded/Dropped depending on whether the
Global Policy is Blocked/Forwarded.
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Frame Direction:
LAN <=> WAN --> All Frames coming/going to/from LAN or to/from WAN.
WAN => LAN --> All Frames coming from WAN destined to LAN.
LAN => WAN --> All Frames coming from LAN destined to WAN
User needs to select the interface on which this rule is applied.
Examples:
1.
Global Policy: Forwarded
Protocol Type: PPPoE
Dest. MAC Addr: 00:12:34:56:78:90
Source MAC Addr: NA
Frame Direction: LAN => WAN
WAN Interface Selected: br_0_34/nas_0_34
Addition of this rule drops all PPPoE frames going from LAN-side to WAN-side with a Dest. MAC Addr. of 00:12:34:56:78:90 irrespective of its Source MAC Addr. on the br_0_34 WAN interface. All other frames on this interface are forwarded.
2.
Global Policy: Blocked
Protocol Type: PPPoE
Dest. MAC Addr: 00:12:34:56:78:90
Source MAC Addr: 00:34:12:78:90:56
Frame Direction: WAN => LAN
WAN Interface Selected: br_0_34/nas_0_34
Addition of this rule forwards all PPPoE frames going from WAN-side to LAN-side with a Dest. MAC Addr. of 00:12:34:56:78 and Source MAC Addr. of
00:34:12:78:90:56 on the br_0_34 WAN interface. All other frames on this interface are dropped.
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Daytime Parental Control
This feature restricts access of a selected LAN device to an outside Network through the router, as per chosen days of the week and the chosen times.
User Name: Name of the Filter.
Browser's MAC Address: Displays MAC address of the LAN device on which the browser is running.
Other MAC Address: If restrictions are to be applied to a device other than the one on which the browser is running, the MAC address of that LAN device is entered.
Days of the Week: Days of the week, when the restrictions are applied.
Start Blocking Time: The time when restrictions on the LAN device are put into effect.
End Blocking Time: The time when restrictions on the LAN device are lifted.
Example:
User Name: FilterJohn
Browser's MAC Address: 00:25:46:78:63:21
Days of the Week: Mon, Wed, Fri
Start Blocking Time: 14:00
End Blocking Time: 18:00
When this rule i.e. FilterJohn is entered, a LAN device with MAC Address of
00:25:46:78:63:21 will be restricted access to the outside network on Mondays,
Wednesdays and Fridays, from 2pm to 6pm. On all other days and time this device will have access to the outside Network.
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Appendix B: Pin Assignments
Line port (RJ11)
Pin Definition Pin Definition
2 - 5 -
3 ADSL_RING 6 -
Pin Assignments of the RJ11 Port
LAN Port (RJ45)
Pin Definition Pin Definition
NC
Receive data- 2 Transmit data- 6
NC
4 NC 8 NC
Pin assignments of the LAN Port
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Appendix C: Specifications
Rear Panel
RJ-11 X1 for ADSL, RJ-45 X 4 for LAN, USB X 1, Reset Button X 1
Power Jack X 1, Power switch X 1
ADSL
Standard ITU-T G.992.5, ITU-T G.992.3, ITU-T G.992.1, ANSI T1.413 Issue 2
G.992.5 (ADSL2+).......... Downstream : 24 Mbps Upstream : 1.3 Mbps
G.992.3 (ADSL2)............ Downstream : 12 Mbps Upstream : 1.3 Mbps
G.DMT .......................... Downstream : 8 Mbps Upstream : 832 Kbps
Ethernet
Standard IEEE 802.3, IEEE 802.3u
10/100 BaseT Auto-sense
MDI/MDX
ATM Attributes
RFC 2364 (PPPoA), RFC 2684 (RFC 1483) Bridge/Route; RFC 2516 (PPPoE);
RFC 1577 (IPoA)
Support PVCs 16
AAL type AAL5
ATM service class UBR/CBR/VBR
ATM UNI support UNI3.1/4.0
OAM F4/F5 Yes
Management
Telnet, Web-based management, Configuration backup and restoration,
TR-069, SNMP (optional)
Software upgrade via HTTP, TFTP server, or FTP server
Bridge Functions
Transparent bridging and learning IEEE 802.1d
VLAN support
Spanning Tree Algorithm Yes
IGMP Proxy
Yes
Yes
Routing Functions
Static route, RIP, and RIPv2, NAT/PAT, DHCP Server/DHCP Relay, DNS Proxy, ARP
Security Functions
Authentication protocols PAP, CHAP,
TCP/IP/Port filtering rules, Port triggering/Forwarding, Packet and MAC address filtering, access control, SSH
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Application Passthrough
PPTP, L2TP, IPSec, VoIP, Yahoo messenger, ICQ, RealPlayer, NetMeeting, MSN,
X-box, etc
OS Supported for USB driver
Windows Vista/2000/XP/ME/98SE
Power Supply
External power adapter 110 Vac or 220 Vac
Environment Condition
Operating temperature 0 ~ 50 degrees Celsius
Relative humidity 5 ~ 90% (non-condensing)
Dimensions
200 mm (W) x 44 mm (H) x 136.5 mm (D)
Certifications
FCC Part 15 class B, FCC Part 68, CE
Note: Specifications are subject to change without notice.
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Appendix D: SSH Client
Linux OS comes with ssh client. MicroSoft Windows does not have ssh client but there is a public domain one “putty” that you can download. http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
To access the router using Linux ssh client:
From LAN: Use the router WEB UI to enable SSH access from LAN.
(default is enabled) type: ssh -l root 192.168.1.1
From WAN: In the router, use WEB UI to enable SSH access from WAN. type: ssh -l support router-WAN-ip-address
To access the router using Windows putty ssh client:
From LAN: Use the router WEB UI to enable SSH access from LAN
(default is enabled) type: putty -ssh -l root 192.168.1.1
From WAN: In the router, use WEB UI to enable SSH access from WAN. type: putty -ssh -l support router-WAN-ip-address
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