CT-5621T

ADSL2+ Multi-port Router

Users 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 No part of
messages contained herein are proprietary to Comtrend Corporation. means without prior written permission by Comtrend Corporation.
this document may be translated, transcribed, reproduced, in any form, or by any
Technical support If you find the product to be inoperable or malfunctioning, please contact a technical support engineer for immediate service by email at INT-support@comtrend.com

Table of Contents

CHAPTER 1 1.1 1.2 1.3 INTRODUCTION....5
FEATURES.....5 APPLICATION.....6 FRONT PANEL LED INDICATORS...7 INSTALLATION....9

CHAPTER 2 2.1 2.2 2.3

HARDWARE INSTALLATION....9 USB DEVICE DRIVER AUTO-RUN INSTALLATION... 11 USB DRIVER MANUAL INSTALLATION (64BIT OS)...14 LOGIN VIA THE WEB BROWSER...19

CHAPTER 3 3.1 3.2 3.3

IP ADDRESS.....20 LOGIN PROCEDURE.....21 DEFAULT SETTINGS.....23 DEVICE INFO....24
CHAPTER 4 4.1 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 4.2.6 4.2.7 CHAPTER 5 5.1 5.2 5.2.1 5.2.2 5.2.3 5.2.4 CHAPTER 6 6.1 6.2
WAN.....25 STATISTICS....26 LAN Statistics....27 WAN Statistics.....28 ATM statistics.....29 ADSL Statistics....31 Route....33 ARP....33 DHCP.....34 QUICK SETUP....35
AUTO QUICK SETUP....36 MANUAL QUICK SETUP....37 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)..39 MAC Encapsulation Routing (MER)...44 IP Over ATM....47 Bridging....51 ADVANCED SETUP...53

WAN.....55 LAN.....56

6.3 6.3.1 6.3.2 6.3.3 6.3.4 6.4 6.4.1 6.4.2 6.4.3 6.5 6.6 6.6.1 6.6.2 6.6.3 6.7 6.7.1 6.7.2 6.8 6.9 6.10
NAT.....58 Virtual Servers....58 Port Triggering....60 DMZ Host....61 ALG.....62 SECURITY.....63 IP Filtering....63 Parental Control....66 MAC Filtering.....67 QUALITY OF SERVICE....69 ROUTING....72 Default Gateway....72 Static Route....73 RIP.....74 DNS.....75 DNS Server....75 Dynamic DNS.....76 DSL.....78 PORT MAPPING....79 CERTIFICATE....82 Local....82 Trusted CA.....84 DIAGNOSTICS....85 MANAGEMENT....87
6.10.1 6.10.2 CHAPTER 7 CHAPTER 8 8.1 8.1.1 8.1.2 8.1.3 8.2 8.3 8.4 8.5 8.5.1 8.5.2 8.5.3 8.6 8.7

SETTINGS.....87 Configuration Backup....88 Update Settings....89 Restore Default....90 SYSTEM LOG.....92 TR-069 CLIENT....95 INTERNET TIME....97 ACCESS CONTROL....98 Services.....99 Access IP Addresses....100 Passwords....101 UPDATE SOFTWARE....102 SAVE AND REBOOT....103
APPENDIX A: FIREWALL....104 APPENDIX B: PIN ASSIGNMENTS.... 110 APPENDIX C: SPECIFICATIONS... 111 APPENDIX D: SSH CLIENT.... 113

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.

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

Application

The following diagram depicts the application of the CT-5621T multi-port router.
Front Panel LED Indicators
The table that follows provides
The front panel LED indicators are pictured below. detailed explanations of their function.

LED POWER

Color Mode Green On Off Red On
Function The router is powered up. The router is powered down. 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 LAN 4x~1x Off Green Blink Green On USB Off Green Blink Green On Off ADSL Green Blink
An Ethernet Link is established. An Ethernet Link is not established. Data transmitting or receiving over LAN. A USB link is established. A USB link is not established. Data transmitting or receiving over USB. DSL good sync 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. 7

USB Device Driver Auto-run Installation
The auto-run USB driver installation supports Win ME, Win 98, Win
Before you connect your routers USB cable to your PC, you must load the ADSL USB drivers. 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.
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.
STEP 4: Click the Finish button, when the screen displays as below.
STEP 5: Installation is complete.
USB Driver Manual Installation

(64bit OS)

Before you connect your routers 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.
Note: This screen wont 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).
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.
STEP 6: When the screen displays as below, click the NEXT button.
STEP 7: Click the Finish button, when the screen displays as below.

Click ARP to display the ARP information.
Click DHCP to display the DHCP information.

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. PPP over Ethernet (PPPoE) PPP over ATM (PPPoA) MAC Encapsulated Routing (MER) IP over ATM (IPoA) Bridging The following configuration considerations apply: The WAN network operating mode operation depends on the service providers configuration on the Central Office side and Broadband Access Server for the PVC 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. 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. 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.
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.

Auto Quick Setup

You only need to follow the online instructions that
The auto quick setup requires the ADSL link to be up. The ADSL router will automatically detect the PVC. 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.

Manual Quick Setup

enable manual configuration of the connection type.
STEP 1: Click Quick Setup and un-tick the DSL Auto-connect checkbox to
Un-tick this checkbox to enable manual setup and display the following screen.
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.
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. PPPoA- VC/MUX, LLC/ENCAPSULATION PPPoE- LLC/SNAP BRIDGING, VC/MUX MER- LLC/SNAP-BRIDGING, VC/MUX IPoA- LLC/SNAP-ROUTING, VC MUX Bridging- LLC/SNAP-BRIDGING, VC/MUX
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. minute to 4320 minutes. The timeout period ranges from 1
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: Allows only one PC on the LAN 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. NAPT and firewall are disabled when this option is selected. The ADSL router becomes the default gateway and DNS server to the PC through DHCP using the LAN interface IP address. 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. The ADSL router bridges the IP packets between WAN and LAN ports, unless the packet is addressed to the routers LAN IP address.

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.
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. after the system comes up. The user can then configure NAT-related features 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. is not selected, you will not be able to use the WAN service. Service Name: This is User-defined. If this item
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 The CT-5621T is ready for operation and the front panel LED automatically.

IP Over ATM

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.
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. features after the system comes up. The user can then configure firewall 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.
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. 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 routers 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. This configures the router to automatically assign IP addresses, default gateway address and DNS server

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 The CT-5621T is ready for operation and the front panel LED automatically.

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.
Click the Next button to continue. Enter the IP address for the LAN interface. The LAN IP interface in bridge operating
The default IP address is 192.168.1.1.
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.
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.

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.
This screenshot is for Bridge encapsulation.

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.
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.
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.
To display the NAT function, you need to enable the NAT feature in the WAN Setup.

Virtual Servers

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.
Select a Service Or Custom Server Server IP Address External Port Start
User should select the service from the list. Or User can enter the name of their choice. Enter the IP address for the server. Enter the starting external port number (when you select Custom Server). When a service is selected the port ranges are automatically configured.

External Port End

Enter the ending external port number (when you select Custom Server). When a service is selected the port ranges are automatically configured.
Protocol Internal Port Start
User can select from: TCP, TCP/UDP or UDP. 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.

Port Triggering

Some applications require that specific ports in the Routers 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.

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:
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 SET-1 Physical LAN Port Protocol Source IP Address Source Subnet Mask Source Port (port or port:port) Destination IP address Destination Subnet Mask Destination port (port or port:port) SET-2 802.1p Priority
Select between 0-7. The higher the digit shows the higher the priority.
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. Enter destination IP address. Enter destination subnet mask. Enter destination port number or port range. 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:
The additional Items are explained here. Assign Differentiated Services Code Point (DSCP) Mark Source MAC Address The selected Code Point gives the corresponding priority to the packets that satisfies the rules set below. 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. Source MAC Mask Destination MAC Address 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. Destination MAC Mask This is the mask used to decide how many bits are checked in Destination MAC Address. 71

Routing

The Routing dialog box allows you to configure Default gateway, Static Route and

Default Gateway

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.

System Log

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.

Option Log

Description Indicates whether the system is currently recording events. The user can enable or disable event logging. By default, it is disabled. enable it, tick Enable and then Apply button. To

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 Emergency = system is unusable Alert = action must be taken immediately Critical = critical conditions Error = Error conditions Warning = normal but significant condition Notice= normal but insignificant condition Informational= provides information for reference 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.

Display Level Mode

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.

Access Control

The Access Control option under Management menu bar configures the access-related parameters, including three parts: Services, IP Address, and Passwords.

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.

Access IP Addresses

If the Access Control
The IP Addresses option limits the access by IP address.
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.

Passwords

Access to
The Passwords option configures the access passwords for the router.
your DSL router is controlled through three user accounts: root, support, and user. root has unrestricted access to change and view configuration of your DSL Router. "support" is used to allow an ISP technician to access your DSL Router for maintenance and to run diagnostics. "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.

Update software

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.

Save and Reboot

The Save/Reboot options saving the configurations and reboot the router.
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.

CT-5621

ADSL2+ Multi-Port Router Users Manual
Version A1.7, November 9, 2007

261055-016

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 Specifications.
Preface This manual provides information to network administrators. It covers the installation, operation and applications of the ADSL2+ router. The reader 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. means without prior written permission by Comtrend Corporation. No part of this document may be translated, transcribed, reproduced, in any form, or by any
Technical support When you find the product out of service, or that it doesnt work properly, please contact technical support engineer for immediate servicing or email to INT-support@comtrend.com

Table of Contents

CHAPTER 1 1.1 1.2 1.3 INTRODUCTION....4
FEATURES.....4 APPLICATION.....5 FRONT PANEL LED INDICATORS...6 INSTALLATION....7

CHAPTER 2 2.1 2.2 2.3

HARDWARE INSTALLATION....7 USB DEVICE DRIVER AUTO-RUN INSTALLATION...8 USB DRIVER MANUAL INSTALLATION(64BIT OS).. 11 LOGIN VIA THE WEB BROWSER...16

CHAPTER 3 3.1 3.2 3.3

IP ADDRESS.....16 LOGIN PROCEDURE.....17 DEFAULT SETTINGS.....18 DEVICE INFO....19
CHAPTER 4 4.1 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 4.2.6 4.2.7 CHAPTER 5 5.1 5.2 5.2.1 5.2.2 5.2.3 5.2.4 CHAPTER 6 6.1 6.2
WAN.....20 STATISTICS....21 LAN Statistics....22 WAN Statistics.....23 ATM statistics.....24 ADSL Statistics....26 Route....28 ARP....28 DHCP.....29 QUICK SETUP....30
AUTO QUICK SETUP....31 MANUAL QUICK SETUP....32 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)..34 MAC Encapsulation Routing (MER)...39 IP Over ATM....43 Bridging....47 ADVANCED SETUP...49

WAN.....51 LAN.....52

6.3 6.3.1 6.3.2 6.3.3 6.3.4 6.4 6.4.1 6.4.2 6.4.3 6.5 6.6 6.6.1 6.6.2 6.6.3 6.7 6.7.1 6.7.2 6.8 6.9
NAT.....53 Virtual Servers....53 Port Triggering....55 DMZ Host....57 ALG.....58 SECURITY.....59 IP Filtering....59 Parental Control....62 MAC Filtering.....63 QUALITY OF SERVICE....65 ROUTING....67 Default Gateway....67 Static Route....68 RIP.....69 DNS.....70 DNS Server....70 Dynamic DNS.....71 DSL.....73 PORT MAPPING....74 DIAGNOSTICS....75 MANAGEMENT....78
CHAPTER 7 CHAPTER 8 8.1 8.1.1 8.1.2 8.1.3 8.2 8.3 8.4 8.5 8.5.1 8.5.2 8.5.3 8.6 8.7
SETTINGS.....78 Configuration Backup....79 Tools Update Settings...80 Restore Default....81 SYSTEM LOG.....83 SNMP AGENT....85 INTERNET TIME....86 ACCESS CONTROL....87 Services.....88 Access IP Addresses....89 Passwords....90 UPDATE SOFTWARE....91 SAVE AND REBOOT....92

STEP 3: Click OK to submit the settings. 16
STEP 4: Start your Internet browser and enter the IP address for the router (i.e. 192.168.1.1) in the Web address bar.

Login Procedure

Perform the following steps to bring up the Web user interface and configure the CT-5621. 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.

Default Settings

It will then read the configuration profile from the Permanent The configuration profile
During power on initialization, the CT-5621 initializes all configuration attributes to default values. Storage section in flash memory. The default attributes are overridden when identical attributes with different values are configured. in Permanent Storage can be created via the Web user interface or 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 by Ethernet or USB.
LAN port IP address: 192.168.1.1 Console port: 115200 bps Local administrator account name: root Local administrator account password: 12345 Local non- administrator account name: user Local non- administrator account password: user Remote WAN access: disabled Remote WAN HTTP/FTP access (user=support, pass=support) Remote WAN HTTP/Telnet access (user=root, pass=12345) NAT and firewall: Enabled by default for PPPoE and PPPoA Disabled by default for IPoA, MER and Bridging DHCP server on LAN interface: enabled for IPoA, MER, PPPoE, and PPPoA PVCs WAN IP address: none Annex M: enabled SNMP: enabled

Chapter 4 Device Info

After login, the Device Info - Summary screen appears as shown.
Note: The selections available on the left side menu are based upon user permissions.
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.
VPI/VCI Con. ID Category Service Interface Protocol IGMP QoS State Status IP Address

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-5621 ADSL2+ multi-port router supports the following five network operating modes over an ATM PVC WAN interface. PPP over Ethernet (PPPoE) PPP over ATM (PPPoA) MAC Encapsulated Routing (MER) IP over ATM (IPoA) Bridging The following configuration considerations apply: The WAN network operating mode operation depends on the service providers configuration on the Central Office side and Broadband Access Server for the PVC 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-5621 is to run the PPPoE client. The CT-5621 can support both cases simultaneously. 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-5621 also supports pass-through PPPoE sessions from the LAN side while simultaneously running a PPPoE client for non-PPPoE LAN devices. NAT and firewall are always enabled when PPPoE or PPPoA modes are 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. 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.
Note: Up to eight 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.

Auto Quick Setup

You only need to follow the online instructions that
The auto quick setup requires the ADSL link to be up. The ADSL router will automatically detect the PVC. you are prompted. 1. Select Quick Setup to display the DSL Quick Setup screen.

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. addresses to each of your PCs. Note that the routers default IP address is 192.168.1.1 and the default private address range provided by ISP server in the router is 192.168.1.2 through 192.168.1.254. Select Enable DHCP Server Relay (if required), and enter the DHCP Server IP Address. This configures the router to automatically assign IP addresses, default gateway address and DNS server
7. 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.

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.
6. Click Next and 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.

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.
This screenshot is for Bridge encapsulation.
For further information on WAN please reference section: 4.1 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.

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.
T o 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.
To display the NAT function, you need to enable the NAT feature in the WAN Setup.
Note: This function is enabled by default in PPPoE and PPPoA modes, disabled by default in MER and IPoA modes, and unavailable in Bridging mode.

Virtual Servers

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.
Select a Service Or Custom Server Server IP Address External Port Start
User should select the service from the list. Or User can enter the name of their choice. Enter the IP address for the server. Enter the starting external port number (when you select Custom Server). When a service is selected the port ranges are automatically configured.

External Port End

Enter the ending external port number (when you select Custom Server). When a service is selected the port ranges are automatically configured.
Protocol Internal Port Start
User can select from: TCP, TCP/UDP or UDP. 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.

Port Triggering

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.
Select an Application Or Custom Application Trigger Port Start
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.

Trigger Port End

Enter the ending trigger port number (when you select custom application). When an application is selected the port ranges are automatically configured.
Trigger Protocol Open Port Start
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.

Open Port End

Enter the ending open port number (when you select custom application). When an application is selected the port ranges are automatically configured.

Open Protocol

User can select from: TCP, TCP/UDP or UDP.

DMZ Host

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.
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.

Security

To display the Security function, you need to enable the firewall in WAN Setup.

IP Filtering

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 all Outgoing traffic is ALLOWED. To BLOCK outgoing traffic an IP filter must be added.
To add a filtering rule, simply click the Add button. The following screen will be displayed.
Filter Name Protocol Source IP address Source Subnet Mask Source Port (port or port:port) Destination IP address Destination Subnet Mask Destination port (port or port:port)
Type a name for the filter rule. User can select from: TCP, TCP/UDP, UDP or ICMP. Enter source IP address. Enter source subnet mask. Enter source port number. Enter destination IP address. Enter destination subnet mask. Enter destination port number.

Incoming Note: The default setting for all Incoming traffic is BLOCKED. To ALLOW incoming traffic an IP filter must be added.
To configure the parameters, please reference Outgoing table above.

Parental Control

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.
Username: MAC: Mon, Tue, Wed, Thu, Fri, Sat, Sun: Start, Stop:
Input Internet access user name Set the MAC address to access the Internet Set which days that will have block restrictions to Internet access Set Internet block start and stop time 62

MAC Filtering

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. FORWARD; you change by clicking the Change Policy button. The default is
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.
Option Protocol type Destination MAC Address Source MAC Address Frame Direction: WAN Interface
Description PPPoE, IPv4, IPv6, AppleTalk, IPX, NetBEUI, IGMP Define the destination 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.

Setup.

Quality of Service
To display the Security function, you need to enable the QoS feature in the WAN
Choose Add to configure network traffic classes. The following screen will be displayed:
Traffic Class Name Priority IP Precedence 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
Physical LAN Port Protocol Source IP Address Source Subnet Mask Source Port (port or port:port) Destination IP address Destination Subnet Mask Destination port (port or port:port) 802.1p Priority

User can select from: ENET, ENET (1-4), USB or Wireless. 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. Enter destination IP address. Enter destination subnet mask. Enter destination port number. Select between 0-7. The lower the digit shows the higher the priority

Routing

The Routing dialog box allows you to configure Default gateway, Static Route and

Default Gateway

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.

Static Route

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.
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.

DNS Server

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.

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.
Description computer is connected to the LAN port of your DSL Router. Fail: Indicates that the DSL Router does not detect the Ethernet interface on your computer.
Ethernet Connection Pass: indicates that the Ethernet interface from your

USB connection

Pass: Indicates that the USB interface from your computer is connected to the LAN port of your DSL router. Down: Indicates that the DSL Router does not detect the USB interface on your computer.

Wireless connection

Pass: Indicates that the Wireless interface from your computer is connected to the wireless network. Down: Indicates that the DSL Router does not detect the wireless network.

ADSL Synchronization

Pass: Indicates that the DSL modem has detected a DSL signal from the telephone company. telephone company. Fail: indicates that the DSL modem does not detect a signal from the telephone companys DSL network. blank). The WAN LED will stop blinking and the LED will stop illuminating (i.e. go A solid WAN LED on the router also indicates the detection of a DSL signal from the

Test Loopback IP

Pass: Indicates we can access the WAN service like the Gateway and DNS. Fail: Indicates we cannot access the WAN side.
Diagnostics screen with a PPPoE configured for your reference.

Chapter 8 Management

The Management section of the CT-5621 supports the following maintenance functions and processes:
Settings System Log SNMP Agent Internet Time Access Control Update software Save/Reboot

Settings

The Settings option allows you to back up your settings to a file, retrieve the setting file, and restore the settings.

Configuration Backup

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. Te file will then be saved to the assigned location.

Tools Update Settings

The Update option under Management>Settings update your router settings using your saved files.

Restore Default

Clicking the Restore Default Configuration option in the Restore Settings screen can restore the original factory installed settings.

3. Click View System Log. The results are displayed as follows.

SNMP Agent

Simple Network Management Protocol (SNMP) allows a management application to retrieve statistics and status from the SNMP agent in this device. Select or enter the desired values and click Save/Apply to configure SNMP options.

Internet Time

The Internet Time option under Management menu bar configures the Modems time. To automatically synchronize with Internet time servers, tick the corresponding box displayed on the screen. Then click Save/Apply.

Access Control

The Access Control option under Management menu bar configures the access-related parameters, including three parts: Services, IP Address, and Passwords.

Services

The Services option limits or opens the access services over the LAN or WAN. These services are provided FTP, HTTP, ICMP, SNMP, SSH (Security Socket Share), TELNET, and TFTP. Enable the service by checking the item in the corresponding checkbox, and then click Save/Apply.

Access IP Addresses

If the Access Control
The IP Addresses option limits the access by IP address.
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 to manage the DSL Router.

Passwords

Access to
The Passwords option configures the access passwords for the router.
your DSL router is controlled through three user accounts: root, support, and user. root has unrestricted access to change and view configuration of your DSL Router. "support" is used to allow an ISP technician to access your DSL Router for maintenance and to run diagnostics. "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.

Update software

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.

Examples: 1. Filter Name Protocol Source Address Source Subnet Mask Source Port Dest. Address Dest. Sub. Mask Dest. Port : Out_Filter1 : TCP : 192.168.1.45 : 255.255.255.0 : 80 :NA : 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. 2. Filter Name Protocol Source Address Source Subnet Mask Source Port Dest. Address Dest. Sub. Mask Dest. Port : Out_Filter2 : UDP : 192.168.1.45 : 255.255.255.0 : 5060:6060 :172.16.13.4 : 255.255.255.0 : 6060:7070
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. 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: 1. Filter Name Protocol Source Address Source Subnet Mask Source Port Dest. Address Dest. Sub. Mask Dest. Port : In_Filter1 : TCP : 210.168.219.45 : 255.255.0.0 : 80 :NA : NA : 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.

Filter Name Protocol Source Address Source Subnet Mask Source Port Dest. Address Dest. Sub. Mask Dest. Port
: In_Filter2 : UDP : 210.168.219.45 : 255.255.0.0 : 5060:6060 :192.168.1.45 : 255.255.255.0 : 6060:7070
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 either PPPoE, IPv4, IPv6, AppleTalk, IPX, NetBEUI, 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.
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 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 irrespective of its Source MAC Addr. on the br_0_34 WAN interface. All other frames on this interface are forwarded.