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CT-5071T

ADSL2+ Ethernet Router

User Manual

Version A3.3, December 22, 2008

261063-018

Preface This manual provides information related to the installation, operation, and application of this device. The individual reading this manual is presumed to have a basic understanding of telecommunications terminology and concepts. If you find the product to be inoperable or malfunctioning, please contact technical support for immediate service by email at INT-support@comtrend.com For product update, new product release, manual revision, or software upgrades, please visit our website at http://www.comtrend.com Important Safety Instructions With reference to unpacking, installation, use, and maintenance of your electronic device, the following basic guidelines are recommended: Do not use or install this product near water, to avoid fire or shock hazard. For example, near a bathtub, kitchen sink or laundry tub, or near a swimming pool. Also, do not expose the equipment to rain or damp areas (e.g. a wet basement). Do not connect the power supply cord on elevated surfaces. Allow it to lie freely. There should be no obstructions in its path and no heavy items should be placed on the cord. In addition, do not walk on, step on, or mistreat the cord. Use only the power cord and adapter that are shipped with this device. To safeguard the equipment against overheating, make sure that all openings in the unit that offer exposure to air are not blocked. Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of electric shock from lightening. Also, do not use the telephone to report a gas leak in the vicinity of the leak. Never install telephone wiring during stormy weather conditions.
CAUTION: To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord. Always disconnect all telephone lines from the wall outlet before servicing or disassembling this equipment. WARNING Disconnect the power line from the device before servicing. Power supply specifications are clearly stated in Appendix C. Copyright Copyright2008 Comtrend Corporation. All rights reserved. The information contained herein is proprietary to Comtrend Corporation. No part of this document may be translated, transcribed, reproduced, in any form, or by any means without prior written consent of Comtrend Corporation. NOTE: This document is subject to change without notice. 1

Table of Contents

CHAPTER 1 INTRODUCTION....4 1.1 FEATURES.....4 1.2 APPLICATION.....4 CHAPTER 2 INSTALLATION....5 2.1 HARDWARE SETUP.....5 2.2 ROUTER STAND SETUP....6 2.3 LED INDICATORS....7 CHAPTER 3 WEB USER INTERFACE....8 3.1 DEFAULT SETTINGS....8 3.2 IP CONFIGURATION....9 3.3 LOGIN PROCEDURE....10 CHAPTER 4 QUICK SETUP....12 4.1 AUTO QUICK SETUP....13 4.2 MANUAL QUICK SETUP.....14 4.2.1 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)..16 4.2.2 MAC Encapsulation Routing (MER)...20 4.2.3 IP Over ATM....23 4.2.4 Bridging....26 CHAPTER 5 DEVICE INFORMATION...28 5.1 WAN.....29 5.2 STATISTICS.....29 5.2.1 LAN Statistics....30 5.2.2 WAN Statistics.....30 5.2.3 ATM statistics.....31 5.2.4 ADSL Statistics....33 5.3 ROUTE....36 5.4 ARP.....37 5.5 DHCP....37 CHAPTER 6 ADVANCED SETUP....38 6.1 WAN.....38 6.2 LAN.....39 6.3 NAT.....40 6.3.1 Virtual Servers....40 6.3.2 Port Triggering....42 6.3.3 DMZ Host....43 6.3.4 ALG.....43 6.4 SECURITY....44 6.4.1 IP Filtering....44 6.4.2 MAC Filtering.....46 6.4.3 Parental Control....48 6.5 QUALITY OF SERVICE....49 6.6 ROUTING.....51 6.6.1 Default Gateway....51 6.6.2 Static Route....52 6.6.3 RIP.....52 6.7 DNS SERVER....53 6.7.1 DNS Server....53 6.7.2 Dynamic DNS.....53 6.8 DSL.....55 6.9 CERTIFICATE.....56 6.9.1 Local....56 6.9.2 Trusted CA.....58 CHAPTER 7 DIAGNOSTICS....59 2

CHAPTER 8 MANAGEMENT....61 8.1 SETTINGS.....61 8.1.1 Backup Settings....61 8.1.2 Update Settings....61 8.1.3 Restore Default....62 8.2 SYSTEM LOG....63 8.3 SNMP AGENT....65 8.4 TR-069 CLIENT.....65 8.5 INTERNET TIME.....66 8.6 ACCESS CONTROL....67 8.6.1 Services.....67 8.6.2 IP Addresses....67 8.6.3 Passwords....68 8.7 UPDATE SOFTWARE....69 8.8 SAVE AND REBOOT....70 APPENDIX A FIREWALL....71 APPENDIX B PIN ASSIGNMENTS....75 APPENDIX C SPECIFICATIONS...76 APPENDIX D SSH CLIENT...78

Chapter 1 Introduction

The CT-5071T ADSL2+ Ethernet Router is a high-performance device that features TR-069 compliance for remote network management. It has one 10/100 Base-T Ethernet port and one ADSL2+ port for broadband Internet access. The CT-5071T also has a TR-068 compliant rear panel and LED indicators for easy installation and use. It supports LAN or Video on Demand at speeds of up to 24 Mbps over a regular telephone line. The CT-5071T has full routing capabilities to segment and route IP packets. It provides protection for the local area network with advanced security technologies, such as VPNs (Virtual Private Networks) with PPTP pass-through, L2TP pass-through, IPSec pass-through and Firewall.

1.1 Features

CT-5071T (Annex A) SPI (Stateful Packet Inspection) Static route and RIP v1/v2 NAT/PAT DHCP server/relay/client Auto PVC configuration FTP/TFTP server IP/MAC address filtering Web-based management TR-069/TR-098/TR-111 compliant Configuration backup and restoration IP filtering DoS protection Dynamic IP assignment IGMP proxy DNS proxy Up to 8 VCs Embedded SNMP agent TR-068 compliant Supports remote administration Automatic firmware upgrade and configuration

1.2 Application

The following diagram depicts the application of the CT-5071T.

Chapter 2 Installation

2.1 Hardware Setup
Follow the instructions below to complete the hardware setup. The diagram below shows the back panel of the device. Power Switch
Connection to LINE Connect the ADSL line to this port with a RJ11 cable.

Reset Button

Connection to LAN Use RJ45 cable to connect up to four network devices. These ports are auto-sensing MDI/X and either straight-through or crossover cable can be used. Power ON Press the power button to the OFF position (OUT). Connect the power adapter to the power port. Attach the power adapter to a wall outlet or other AC source. Press the power button to the ON position (IN). If the Power LED displays as expected then the device is ready for setup (see section 2.3 LED Indicators). Caution 1: If the device fails to power up, or it malfunctions, first verify that the power cords are connected securely. Then power it on again. If the problem persists, contact technical support. Caution 2: Before servicing or disassembling this equipment, disconnect all power cords and telephone lines from their outlets. Reset Button Restore the default parameters of the device by pressing the Reset button for 5 to 10 seconds. After the device has rebooted successfully, the front panel should display as expected (see section 2.3 LED Indicators for details). NOTE: If pressed down for more than 20 seconds, the CT-5071T will go into a firmware update state (CFE boot mode). The firmware can then be updated using an Internet browser pointed to the default IP address.

2.2 Router Stand Setup

The router stand can be used to save workspace. As shown in the figure below, simply slide the router into the notches on the stand and position vertically.
Be careful to place the router (and stand) on a flat stable surface. locations where it is likely to be knocked over or fall down.

2.3 LED Indicators

The front panel LED indicators are shown below and explained in the following table. This information can be used to check the status of the device and its connections.

LED LAN LINK

Color Green

INTERNET

Mode On Off Blink On

Blink Red On

ADSL LINK

Green Red

On Off Blink On Off On
Function An Ethernet Link is established. An Ethernet Link is not established. Data transmitting or receiving over LAN. IP connected and no traffic detected. If an IP or PPPoE session is dropped due to an idle timeout, the light will remain green if an ADSL connection is still present. Modem power off, modem in bridged mode or ADSL connection not present. In addition, if an IP or PPPoE session is dropped for any reason, other than an idle timeout, the light is turned off. IP connected and IP Traffic is passing thru the device (either direction) Device attempted to become IP connected and failed (no DHCP response, no PPPoE response, PPPoE authentication failed, no IP address from IPCP, etc.) The ADSL link is established. The ADSL link is not established. The ADSL link is training. The device is powered up. The device is powered down. POST (Power On Self Test) failure or other 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.
Chapter 3 Web User Interface
This section describes how to access the device via the web user interface (WUI) using an Internet browser such as Internet Explorer (version 5.0 and later).

3.1 Default Settings

The factory default settings of this device are summarized below. LAN IP address: 192.168.1.1 LAN subnet mask: 255.255.255.0 Administrative access (username: root , password: 12345) User access (username: user, password: user) WAN IP address: none Remote WAN access: TR-069 and ICMP enabled Remote (WAN) access (username: support, password: support)

4.1 Auto Quick Setup

The auto quick setup procedures require the ADSL link to be up to automatically detect PVCs. You simply need to follow the online instructions as prompted. Step 1: Select Quick Setup to display the DSL Quick Setup screen.
Step 2: Click Next to start the setup process. Follow the online instructions to complete the setting. This procedure will skip some advanced setup procedures (such as PVC index and encapsulation selection). Step 3: After the setup is complete the CT-5071T will reboot.
After the device reboots, the Device Info Summary screen should appear. If the browser does not refresh automatically, close it and restart. You will need to login again.

4.2 Manual Quick Setup

STEP 1: Click Quick Setup and un-tick the DSL Auto-connect checkbox enable manual configuration of the connection type. to
Un-tick this checkbox to enable manual setup and display the following screen.
STEP 2: Adjust the VPI/VCI settings for the connection you wish to establish. may also Enable Quality of Service (QoS) with its checkbox. STEP 3: On this screen, you can choose the connection type and select the appropriate encapsulation mode. The available options are shown. 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
You may also choose to Enable 802.1q (available in PPPoE, MER and Bridging modes) and enter the VLAN ID, as shown below.
Click Next to continue NOTE: The subsections that follow continue the ATM PVC setup procedure. Enter the appropriate settings for your service. Choosing different connection types will lead to a different sequence of setup screens.
PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)
STEP 4: Enter the PPP settings as provided by your ISP.
PPP Settings The PPP Username, PPP password and the PPPoE Service Name entries are dependent on the particular requirements of the ISP. The user name can be a maximum of 256 characters and the password a maximum of 32 characters in length. For Authentication Method, choose from AUTO, PAP, CHAP, and MSCHAP. Dial on Demand The CT-5071T 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 must enter an inactivity timeout period of 1 to 4320 minutes.
PPP IP Extension The PPP IP Extension is a special feature deployed by some service providers. Unless your service provider specifically requires this setup, do not select it. PPP IP Extension does the following: 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 PC LAN interface through DHCP. Only one PC on the LAN can be connected to the remote, since the DHCP server within the 16

device has only a single IP address to assign to a LAN device. NAT and firewall are disabled when this option is selected. The device becomes the default gateway and DNS server to the PC through DHCP using the LAN interface IP address. The device extends the IP subnet at the remote service provider to the LAN PC. i.e. the PC becomes a host belonging to the same IP subnet. The device bridges the IP packets between WAN and LAN ports, unless the packet is addressed to the devices LAN IP address.
Enable NAT If the LAN is configured with a private IP address, the user should select this checkbox. The NAT submenu will appear in the Advanced Setup menu after reboot. On the other hand, 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 not be selected, so as to free up system resources for improved performance. Enable Firewall If this checkbox is selected, the Security submenu will be displayed on the Advanced Setup menu after reboot. If firewall is not necessary, this checkbox should be de-selected to free up system resources for better performance. Use Static IP Address Unless your service provider specially requires this setup, do not select it. If selected, enter your static IP address in the IP Address field. Enable PPP Debug Mode When this option is selected, the system will put more PPP connection information into the system log. This is for debugging errors and not for normal usage. Fixed MTU This option allows for changes to the MTU size of PPPoE and PPPoA WAN interfaces. The default values for MTU size are 1492 for PPPoE and 1500 for PPPoA. The allowable range of values for MTU size is from 64 to 1500. If a value is entered outside this range the following dialog box will be displayed.
STEP 5: Click Next to display the following screen.
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. Service Name: This is the WAN Service label. STEP 6: Upon completion, click Next. The following screen appears.
This screen allows for the configuration of the CT-5071T LAN interface IP address, subnet mask and DHCP server. To auto-assign IP addresses, DNS server and default gateway to other LAN devices, select the Enable DHCP server radio box. You must also enter the start and end IP address and DHCP leased time. Select Enable DHCP Server Relay (if required), and enter the DHCP Server IP Address. This allows the router to relay the DHCP packets to the remote DHCP server. The remote DHCP server will provide the IP address. NOTE: Enable DHCP Server Relay will not display if NAT is enabled. shown.
To configure a secondary IP address for the LAN port, click the 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 Tick the checkbox to enable the WAN service. Service Name is user-defined. STEP 6: Upon completion, click Next. The following screen appears.
This screen allows for the configuration of the CT-5071T LAN interface IP address, subnet mask and DHCP server. To auto-assign IP addresses, DNS server and default gateway to LAN devices, select the Enable DHCP server radio box. You must also enter the start and end IP address and DHCP leased time. Select Enable DHCP Server Relay (if required), and enter the DHCP Server IP Address. This allows the router to relay the DHCP packets to the remote DHCP server. The remote DHCP server will provide the IP address. NOTE: The Enable DHCP Server Relay option will not display if NAT is enabled. shown.

Bridging

and enter a service name.
STEP 4: To enable bridge service, tick the checkbox
Enter the IP address and subnet mask for the LAN interface. These settings are used to manage the CT-5071T. In bridge mode, there is no WAN IP address and therefore no remote access to the router for technical support or other purposes. STEP 6: Click Next to display the configuration summary. Click Save/Reboot if the settings are correct. Click Back if you wish to modify the settings.
Chapter 5 Device Information
The web user interface is divided into two windowpanes, the main menu (at left) and the display screen (on the right). The main menu has several options and selecting each of these options opens a submenu with more selections. NOTE: The menu items shown are based upon the configured connection and user account privileges. For example, in the Advanced Setup menu, if NAT and Firewall are enabled, the main menu will display the NAT and Security submenus. If either is disabled, their corresponding menu(s) will also be disabled.
Device Info is the first selection on the main menu so it will be discussed first. Subsequent chapters will introduce the other main menu options in sequence.
The Device Info Summary screen (shown above) is the default startup screen. It provides summary information regarding hardware, software, data transmission (i.e. Line Rate), and the IP configuration of the device.

5.1 WAN

Select WAN from the Device Info submenu to display the configured PVC(s).
Heading VPI/VCI Con. ID Category Service Interface Protocol IGMP Nat QoS State Status IP Address
Description ATM VPI (0-255) / VCI (32-65535) WAN connection ID number ATM service category Name of the WAN connection Name of the interface for WAN Shows the connection type Shows Internet Group Management Protocol (IGMP) status Shows Network Address Translation (NAT) status Shows Quality of Service (QoS) status Shows the connection state of the WAN connection Lists the status of DSL link Shows WAN IP address

5.2 Statistics

This selection provides LAN, WAN, ATM and ADSL statistics. NOTE: These screens are updated every 15 seconds.

LAN Statistics

This screen shows data traffic statistics for each LAN interface.
Heading Interface Received/Transmitted:

Bytes Pkts Errs Drops

Description LAN interface(s) Number of Bytes Number of Packets Number of packets with errors Number of dropped packets

WAN Statistics

Heading Service VPI/VCI Protocol Interface Received/Transmitted - Bytes - Pkts - Errs - Drops
Description WAN service label ATM Virtual Path/Channel Identifiers Connection type (e.g. PPPoE, IPoA, Bridge) Shows connection interfaces Number of Bytes Number of Packets Number of packets with errors Number of dropped packets 30

ATM statistics

The following figure shows the ATM statistics screen.
ATM Interface Statistics Heading In Octets Out Octets In Errors In Unknown Description Number of received octets over the interface Number of transmitted octets over the interface 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. Number of cells received with an ATM Cell Header HEC error Number of cells received with an unregistered VCC address. Number of cells received on a port that has not been enabled. Number of cells received with an ATM header Payload Type Indicator (PTI) error Number of idle cells received Number of cells received with an illegal circuit type Number of OAM and RM cells received with CRC errors Number of cells received with a non-zero GFC.

Total Number of Errored Seconds Total Number of Severely Errored Seconds Total Number of Unavailable Seconds
Within the ADSL Statistics window, a Bit Error Rate (BER) test can be started using the ADSL BER Test button. A small window will open when the button is pressed; it will appear as shown below. Click Start to start the test or Close.
If the test is successful, the pop-up window will display as follows.

5.3 Route

Choose Route to display the routes that the CT-5071T has found.
Field Destination Gateway Subnet Mask Flag

Metric Service Interface

Description Destination network or destination host Next hub IP address Subnet Mask of Destination U: route is up !: reject route G: use gateway H: target is a host R: reinstate route for dynamic routing D: dynamically installed by daemon or redirect M: modified from routing daemon or redirect The 'distance' to the target (usually counted in hops). It is not used by recent kernels, but may be needed by routing daemons. Shows the name for WAN connection Shows connection interfaces

5.4 ARP

Click ARP to display the ARP information.
Field IP address Flags HW Address Device
Description Shows IP address of host pc Complete, Incomplete, Permanent, or Publish Shows the MAC address of host pc Shows the connection interface

5.5 DHCP

Click DHCP to display all DHCP Leases.
Field Hostname MAC Address IP address Expires In
Description Shows the device/host/PC network name Shows the Ethernet MAC address of the device/host/PC Shows IP address of device/host/PC Shows how much time is left for each DHCP Lease 37

Chapter 6 Advanced Setup

This chapter explains the following screens: 6.1 WAN 6.2 LAN 6.3 NAT 6.4 Security 6.5 Quality of Service 6.6 Routing 6.7 DNS 6.8 DSL 6.9 Certificate

6.1 WAN

This screen allows for the configuration of WAN interfaces. To Add a new WAN connection, click Add. To edit an existing connection, click the Edit button next to the connection. To complete the Add or Edit go to STEP 2 in section 4.2 Manual Quick Setup. To remove a connection select its radio button under the Remove column of the table and click the Remove button under the table.
Heading VPI/VCI Con. ID Category Service Interface Protocol Igmp Nat QoS VlanId State Remove Edit
Description ATM VPI (0-255) / VCI (32-65535) WAN connection ID number ATM service category Name of the WAN connection Name of the interface for WAN Shows the connection type Shows Internet Group Management Protocol (IGMP) status Shows Network Address Translation (NAT) status Shows Quality of Service (QoS) status VLAN ID is used for VLAN Tagging (IEEE 802.1Q) Shows the connection state of the WAN connection Used to select connections for removal Used to edit connections

6.2 LAN

From this screen, LAN interface settings can be configured.
NAT is enabled so UPnP is shown above (see underlined notes below).
Consult the field descriptions below for more details. IP Address: Enter the IP address for the LAN port.
Subnet Mask: Enter the subnet mask for the LAN port. Enable UPnP: Tick the box to enable Universal Plug and Play. This option is hidden when NAT disabled or if no PVC exists This function does not apply to this model.

Enable IGMP Snooping:

DHCP Server: To enable DHCP, select Enable DHCP server and enter Start and End IP addresses and the Leased Time. This setting configures the router to automatically assign IP, default gateway and DNS server addresses to every PC on your LAN. DHCP Server Relay: Enable with checkbox and enter DHCP Server IP address. This allows the Router to relay the DHCP packets to the remote DHCP server. The remote DHCP server will provide the IP address. This option is hidden if NAT is enabled outlined (in RED) below.
To configure a secondary IP address, tick the checkbox
IP Address: Enter the secondary IP address for the LAN port. Subnet Mask: Enter the secondary subnet mask for the LAN port. NOTE: The Save button simply saves changes, while the Save/Reboot button both saves and reboots the device to make any changes effective.

6.3 NAT

To display this option, NAT must be enabled in at least one PVC shown on the Advanced Setup - WAN screen. (NAT is not an available option in Bridge mode)

Virtual Servers

Virtual Servers allow you to direct incoming traffic from the WAN side (identified by Protocol and External port) to the Internal server with private IP addresses 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 of 32 entries can be configured.
To add a Virtual Server, click Add. The following will be displayed.
Consult the table below for field and header descriptions. Field/Header Select a Service Or Custom Server Server IP Address External Port Start External Port End Protocol Internal Port Start Internal Port End Description 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. Enter the ending external port number (when you select Custom Server). When a service is selected, the port ranges are automatically configured. 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 Enter the internal port ending number (when you select Custom Server). When a service is selected, the port ranges are automatically configured.

Choose Add or Remove to configure MAC filtering rules. The following screen will appear 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 must be met. Click Save/Apply to save and activate the filter rule.
Consult the table below for detailed field descriptions. Field Protocol Type Destination MAC Address Source MAC Address Frame Direction WAN Interfaces Description PPPoE, IPv4, IPv6, AppleTalk, IPX, NetBEUI, IGMP Defines the destination MAC address Defines the source MAC address Select the incoming/outgoing packet interface Applies the filter to selected bridge PVCs. These rules are arranged according to bridge PVC, as shown under the VPI/VCI heading on the previous screen.

Parental Control

This feature restricts access from a LAN device to an outside network through the device on selected days at certain times. Make sure to activate the Internet Time server synchronization as described in section 8.5, so that the scheduled times match your local time.
Click Add to display the following screen.
See below for field descriptions.
Click Save/Apply to add a time restriction.
User Name: A user-defined label for this restriction. Browser's MAC Address: MAC address of the PC running the browser. Other MAC Address: MAC address of another LAN device. Days of the Week: The days the restrictions apply. Start Blocking Time: The time the restrictions start. End Blocking Time: The time the restrictions end.

6.5 Quality of Service

NOTE: QoS must be enabled in at least one PVC to display this option. (see Advanced Setup - WAN for further instructions).
Choose Add to configure network traffic classes.
The following screen will display.
Field Traffic Class Name Assign ATM Transmit Priority Mark IP Precedence Mark IP Type Of Service
Description Enter name for traffic class. Select Low, Medium or High. Select between 0-7. The lower the digit shows the higher the priority. Normal Service, Minimize Cost, Maximize Reliability, Maximize Throughput, Minimize Delay 49
Mark 802.1p if 802.1q is enabled on WAN SET-1 Protocol Source IP Address Source Subnet Mask UDP/TCP Source Port (port or port:port) Destination IP address Destination Subnet Mask UDP/TCP Destination port (port or port:port) SET-2 802.1p Priority
Select between 0-7. The higher the digit shows the higher the priority. 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.

8.1 Settings

This includes Backup Settings, Update Settings, and Restore Default screens.

Backup Settings

To save the current configuration to a file on your PC, click Backup Settings. You will be prompted for a location of the backup file. This file can later be used to recover settings using the Update Settings function described below.

Update Settings

This option recovers configuration files previously saved using Backup Settings. Enter the file name (including folder path) in the Settings File Name box or press Browse to search for the file. Click Update Settings to recover settings.

Restore Default

Click Restore Default Settings to restore the CT-5071T to factory default settings.
After Restore Default Settings is clicked, the following screen appears.
Close the browser and wait for 2 minutes before reopening it. It may also be necessary, to reconfigure your PC IP configuration to match your new settings. NOTE: This entry has the same effect as the Reset button. The CT-5071T board hardware and the boot loader support the reset to default. If the Reset button is continuously pressed for more than 5 seconds, the boot loader will erase the configuration data saved in flash memory.

8.2 System Log

This function allows a system log to be kept and viewed upon request. Follow the steps below to configure, enable, and view the system log. Step 1: Click Configure System Log as shown below.
Step 2: Select desired options and click Save/Apply.
Consult the table below for detailed descriptions of each system log option. Option Log Log level Description 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. 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-5071T 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. 63
By default, the log level is Debugging, which is the lowest critical level. The log levels are defined as follows: 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

8.5 Internet Time

This option will automatically synchronize the router time with Internet timeservers. To enable time synchronization, tick the corresponding checkbox , choose your preferred time server(s), select the correct time zone offset, and click Save/Apply.
Internet Time must be activated to use Parental Control (page 48). In addition, this menu item is not displayed when in Bridge mode since the router would not be able to connect to the NTP timeserver.

8.6 Access Control

8.6.1 Services
This option controls the access services over the LAN or WAN. These services include FTP, HTTP, ICMP, SNMP, SSH, TELNET, TFTP, and TR69C (TR-069 client). Enable a service by ticking the corresponding checkbox under LAN or WAN.
NOTES - 1. The WAN column only appears if a WAN connection is configured. 2. Appendix D contains a quick introduction to one SSH client.

IP Addresses

This option limits access to the router by IP address. When Access Control Mode is enabled, only the IP addresses listed here can access the router.
Before enabling Access Control Mode, configure the IP addresses by clicking the Add button. Enter the IP address and subnet mask, and select an interface. Click Save/Apply to add this IP address to the access control list.

Passwords

This screen is used to configure the user account access passwords for the device. Access to the CT-5071T is controlled through the following three user accounts: root - this has unrestricted access to change and view the configuration. support - used for remote maintenance and diagnostics of the router user - this has limited access. This account can view configuration settings and statistics, as well as, update the router firmware.
Use the fields below to change password settings. Click Save/Apply to continue.
Passwords must be 16 characters or less.

8.7 Update Software

This option allows for firmware upgrades from a locally stored file.
Step 1: Obtain an updated software image file from your ISP. Step 2: Enter the path and filename of the firmware image file in the Software File Name field or click the Browse button to locate the image file. Step 3: Click the Update Software button once to upload and install the file. NOTE: The update process will take about 2 minutes to complete. The device will reboot and the browser window will refresh to the default screen upon successful installation. It is recommended that you compare the Software Version at the top of the Device Info Summary screen with the firmware version installed, to confirm the installation was successful.

8.8 Save and Reboot

To save the current configuration and reboot the router, click Save/Reboot.
You may need to close the browser window and wait for 2 minutes before reopening it. It may also be necessary, to reset your PC IP configuration.

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 FILTER 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. OUTGOING IP FILTER Helps in setting rules to DROP packets from the LAN interface. By default, if the Firewall is Enabled, all IP traffic from the LAN is allowed. By setting up one or more filters, specific packet types coming from the LAN can be dropped. Filter Name: User defined Filter Name. Protocol: TCP/UDP, TCP, UDP, or ICMP Source IP Address/Source Subnet Mask: Packets with the specific "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. Destination IP Address/Destination Subnet Mask: Packets with the specific "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. Example 1: Filter Name Protocol Source Address Source Subnet Mask Source Port Dest. Address Dest. Subnet Mask Dest. Port : : : : : : : : Out_Filter1 TCP 192.168.1.45 255.255.255.NA NA NA

doc1

CT-5071T ADSL2+ Ethernet Router Users Manual
Version A3.1, May 15, 2007

261063-010

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+ Ethernet 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.
Recycling For The Environment
Never throw your electronic equipment out with household waste. Ask for information from your town council on how to correctly dispose of it, so that it does not damage the environment. Always respect the current legislation regarding waste disposal. Persons who do not comply are subject to the sanctions and penalties set down in law. The cardboard box, the plastic contained in the packaging, and the parts that make up the device can be recycled in accordance with regionally established regulations.
The symbol of the container with the cross, which is found on the device means that when the equipment has reached the end of its working life, it must be taken to the recycling centres provided, and that its processing must be separate from that of domestic waste. 1

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

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....6
FEATURES.....6 APPLICATION.....7 FRONT PANEL LED INDICATORS...8 INSTALLATION....10

CHAPTER 2 2.1

HARDWARE INSTALLATION....10 LOGIN VIA THE WEB BROWSER...12

CHAPTER 3 3.1 3.2 3.3

IP ADDRESS.....12 LOGIN PROCEDURE.....14 DEFAULT SETTINGS.....15 QUICK SETUP....16

CHAPTER 4 4.1 4.2

WAN.....17 STATISTICS....18 LAN Statistics....19 WAN Statistics.....20 ATM statistics.....21 ADSL Statistics....23 Route....25 ARP....25 DHCP.....26 QUICK SETUP....27
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
AUTO QUICK SETUP....28 MANUAL QUICK SETUP....29 PPP over ATM (PPPoA) and PPP over Ethernet (PPPoE)..31 MAC Encapsulation Routing (MER)...36 IP Over ATM....40 Bridging....44 ADVANCED SETUP...46
5.2.1 5.2.2 5.2.3 5.2.4 CHAPTER 6 6.1 6.2 6.3
WAN.....48 LAN.....49 NAT.....51 Virtual Servers....51
6.3.2 6.3.3 6.3.4 6.4 6.4.1 6.4.2 6.4.3 6.5 6.6
Port Triggering....53 DMZ Host....55 ALG.....56 IP Filtering....57 Parental Control....60 MAC Filtering....61

SECURITY.....57

QUALITY OF SERVICE....63 ROUTING....66 Default Gateway....66 Static Route....67 DNS Server....68 Dynamic DNS.....69
6.6.1 6.6.2 6.7 6.7.1 6.7.2 6.8 6.9 6.10

DNS.....68

DSL.....71 PORT MAPPING....72 CERTIFICATE....74 Local....74 Trusted CA.....76 DIAGNOSTICS....77 MANAGEMENT....79
6.10.1 6.10.2 CHAPTER 7 CHAPTER 8 8.1
SETTINGS.....79 Configuration Backup....80 Tools Update Settings...81 Restore Default....82
8.1.1 8.1.2 8.1.3 8.2 8.3 8.4 8.5
SYSTEM LOG.....84 TR-069 CLIENT....87 INTERNET TIME....89 ACCESS CONTROL....90 Services.....91 Access IP Addresses....92 Passwords....93
8.5.1 8.5.2 8.5.3 8.6 8.7
UPDATE SOFTWARE....94 SAVE AND REBOOT....95
APPENDIX A: FIREWALL....96 APPENDIX B: PIN ASSIGNMENTS....102
APPENDIX C: SPECIFICATIONS...103 APPENDIX D: SSH CLIENT....105

Chapter 1 Introduction

The CT-5071T ADSL2+ compact and high performance Ethernet router provides one 10/100 Ethernet Interface and offers ADSL connectivity at speeds of up to 24 Mbps. It also has full routing capabilities to segment/route IP protocol, and supports advanced security functions.

Features
Supports TR-069 TR-068 compliant IP filtering SPI (Stateful Packet Inspection) DoS protection Static route/RIP/RIP v2 routing functions Dynamic IP assignment NAT/PAT IGMP proxy DHCP server/relay/client DNS proxy Auto PVC configuration Up to 8 VCs Web-based management Remote configuration and upgrade Configuration backup and restoration FTP/TFTP server Embedded SNMP agent IP/MAC address filtering

Application

The following diagram depicts the application of the CT-5071T.
1.3 Front Panel LED Indicators
The front panel LEDs are shown in the picture here, followed by an explanation in the table below.

LED POWER

Color Green

Mode On Off

Function The router is powered up. The router is powered down. The ADSL link is established. The ADSL link is not established. The ADSL link is training. IP connected and no traffic detected. Modem power off, modem in bridged mode or ADSL connection not present. IP connected and IP Traffic is passing thru the device (either direction)
Green ADSL LINK Green Green INTERNET Green
On Off Blink On Off Blink
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. Red On 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. Green LAN LINK Green On Off Blink An Ethernet Link is established. An Ethernet Link is not established. Data transmitting or receiving over LAN.

Chapter 2 Installation

2.1 Hardware Installation
In the rear panel, there is a reset button. It is used to load the factory default settings. Hold down the button until the LEDs start blinking simultaneously (about 5 seconds). After the device has booted successfully, the factory default settings are retrieved. Power Switch

Reset 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 one LAN device. The ports are auto-sensing MDI/X and either straight-through cable or crossover cable can be used. Connection to Power 10

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-5071T initializes all configuration attributes to default values. Storage section on the 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 to the Ethernet.
LAN port IP address: 192.168.1.1 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 access account name: support Remote WAN access account password: support NAT and firewall: disabled DHCP server on LAN interface: enable WAN IP address: none

Chapter 4 Quick Setup

After login, the Quick Setup screen appears as shown.
Note: The selections available on the left side of menu are based upon the configured connection. Shown here is the Device Info screen for your reference.
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
Shows the values of the ATM VPI/VCI Shows the connection ID Shows the ATM service classes Shows the name for WAN connection Shows connection interface Shows the connection type, such as PPPoE, PPPoA, etc. Shows the state of the IGMP function Shows if IP QoS is enabled or disabled Shows the connection state of the WAN connection Lists the status of DSL link Shows IP address for WAN interface

Statistics

All statistics screens are updated every 15 seconds.
Selection of the Statistics screen provides statistics for the Network Interface of LAN, WAN, ATM and ADSL.
Note: This device does not support a USB interface.

LAN Statistics

The Network Statistics screen shows interface statistics for ATM AAL5 interface, and Ethernet interface. (The Network Statistics screen shows the interface statistics for the LAN interface. Here provides byte transfer, packet transfer, Error and Drop statistics for the LAN interface.)

WAN Statistics

Service VPI/VCI Protocol Interface Received/Transmitted Bytes Pkts Errs Drops
Shows the service type Shows the values of the ATM VPI/VCI Shows the connection type, such as PPPoE, PPPoA, etc. Shows connection interface Rx/TX (receive/transmit) packet in Bytes Rx/TX (receive/transmit) packets Rx/TX (receive/transmit) the errored packets Rx/TX (receive/transmit) dropped packets

ATM statistics

The following figure shows the ATM statistics screen.
ATM Interface Statistics Field In Octets Out Octets In Errors In Unknown Description Number of octets received over the interface Number of octets transmitted over the interface 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. In Hec Errors Errors In Port Not Enabled Errors In PTI Errors In Idle Cells In Circuit Type Errors In Oam RM CRC Number of OAM and RM cells received with CRC errors Errors In GFC Errors Number of cells received with a non-zero GFC. 21 Number of cells received with an ATM header Payload Type Indicator (PTI) error Number of idle cells received Number of cells received with an illegal circuit type Number of cells received on a port that has not been enabled. If cells with undefined PTI values are discarded, they are also counted here. Number of cells received with an ATM Cell Header HEC error In Invalid Vpi Vci Number of cells received with an unregistered VCC address.
ATM AAL5 Layer Statistics over ADSL interface Field In Octets Out Octets In Ucast Pkts Out Ucast Pkts In Errors Out Errors In Discards Out Discards Description Number of received AAL5/AAL0 CPCS PDU octets Number of received AAL5/AAL0 CPCS PDUs octets transmitted Number of received AAL5/AAL0 CPCS PDUs passed to a higher-layer for transmission Number of received AAL5/AAL0 CPCS PDUs received from a higher layer for transmission Number of received AAL5/AAL0 CPCS PDUs received in error. The types of errors counted include CRC-32 errors. Number of received AAL5/AAL0 CPCS PDUs that could not be transmitted due to errors. Number of received AAL5/AAL0 CPCS PDUs discarded due to an input buffer overflow condition. This field is not currently used
ATM AAL5 LAYER STATISTICS FOR EACH VCC OVER ADSL INTERFACE
Field CRC Errors SAR TimeOuts
Description 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

ADSL Statistics

Within the ADSL
The following figure shows the ADSL Network Statistics screen. button. The Reset button resets the statistics.
Statistics window, a bit Error Rate Test can be started using the ADSL BER Test
Field Mode Type Line Coding Status Link Power State SNR Margin (dB) Attenuation (dB) Output Power (dBm) Attainable Rate (Kbps) Rate (Kbps) Super Frames Super Frame Errors RS Words RS Correctable Errors RS Uncorrectable Errors HEC Errors OCD Errors LCD Errors Total ES: Total SES: Total UAS:
Description Line Coding format, that can be selected G.dmt, G.lite, T1.413, ADSL2, ADSL2+, AnnexL, AnnexM 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. Total upstream output power The sync rate you would obtain. Current sync rate. Total number of super frames Number of super frames received with errors Total number of Reed-Solomon code errors Total Number of RS with correctable errors Total Number of RS words with uncorrectable errors 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
Choose Route to display the routes that the route information has learned.
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-5071T 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-5071T is to run the PPPoE client. 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-5071T 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 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. The CT-5071T can

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, and DNS. Note: The options displayed in the menu bar depend on what WAN interface is set up.
This screenshot is for PPPoE and PPPoA encapsulations.
This screenshot is for Mer and IPoA encapsulations.
This screenshot is for Bridge encapsulation.
VPI/VCI Con. ID Category Service Interface Protocol IGMP QoS VlanID State
ATM VPI (0-255) / VCI (32-65535) ID for WAN connection ATM service category, e.g. UBR, CBR Name of the WAN connection Name of the interface for WAN Shows bridge or router mode Shows enable or disable IGMP proxy Shows enable or disable QoS * This function means one can add a 802.1Q VLAN tag on PPPoE/MER or Bridge mode. Shows enable or disable WAN connection
It means the packet sends to WAN and it will be added specific Vlan Id(802.1Q
tag) on Ethernet header. The VlanID shows to 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.
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.
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.

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: 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. Note: This device does not support a USB interface. The Lan interface is ENET. In the LAN side, PC can get IP address from CPE's DHCP server and access Internet via PPPoE (0/33).

6.10 Certificate

A certificate is a public key, attached with its owners 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.
Certificate Name Common Name Organization Name
A user-defined name for the certificate. Usually, it is the fully qualified domain name for the machine. 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.

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.

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. Display Level 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. Mode Allows you to specify whether events should be stored in the local memory, or be sent to a remote system log server, or both simultaneously. If remote mode is selected, view system log will not be able to display events saved in the remote system log 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.
3. Click View System Log.
The results are displayed as follows.

TR-069 Client

WAN Management Protocol (TR-069) allows a Auto-Configuration Server (ACS) to perform auto-configuration, provision, collection, and diagnostics to this device.
Option Inform Inform Interval ACS URL
Description Disable/Enable TR-069 client on the CPE. 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

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.

ACS Password

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 User Name Request to the CPE. 87
Connection Request Password used to authenticate an ACS making a Connection Password Get RPC Methods Request to the CPE. 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.

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 and 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

Manual software upgrades from a locally stored file can be
The Update Software screen allows you to obtain an updated software image file from your ISP. 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's IP address to match your new configuration.

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. 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: 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.
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. 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 entered. Days of the Week: Days of the week, when the restrictions are applied. that LAN device is

 

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