Comtrend Corporation NexusLink 5700 User Manual
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Comtrend Corporation NexusLink 5700 User Manual

Comtrend Corporation NexusLink 5700 User Manual

Wireless adsl modem
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NexusLink 5700
Wireless ADSL bonding IAD
User's Manual
Version C1.0, October 5, 2010
260101-001

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Summary of Contents for Comtrend Corporation NexusLink 5700

  • Page 1 NexusLink 5700 Wireless ADSL bonding IAD User’s Manual Version C1.0, October 5, 2010 260101-001...
  • Page 2 This document is subject to change without notice. For product update, new product release, manual revision, software upgrade, technical support, etc., visit Comtrend Corporation at http://www.comtrend.com FCC Interference Statement This equipment has been tested and found to comply with the limits for a Class B Digital Device, pursuant to part 15 of the FCC Rules.
  • Page 3 Copyright Copyright© 2010 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 the prior written consent of Comtrend Corporation.

  • Page 4: Table Of Contents

    Table of Contents CHAPTER 1 INTRODUCTION ....................6 1.1 F ............................6 EATURES 1.2 A ...........................7 PPLICATION 1.3 F LED I ......................8 RONT ANEL NDICATORS CHAPTER 2 INSTALLATION ......................9 2.1 H ......................9 ARDWARE NSTALLATION CHAPTER 3 LOGIN VIA WEB BROWSER ................10 3.1 IP A ...........................10 DDRESS 3.2 L...
  • Page 5 7.1 S ............................53 TATUS 7.2 SIP ..............................53 7.2.1 Global Parameters .......................54 7.2.2 Service Provider......................55 7.3 RTCP ............................57 7.3.1 Global Parameters ........................57 7.3.2 Service Provider ........................58 7.4 T ........................59 ELEPHONE ALLS CHAPTER 8 FIREWALL ........................59 8.1 S ............................61 TATUS 8.2 I ...........................61 NBOUND ILTER...
  • Page 6 APPENDIX A: FIREWALL ........................85 APPENDIX B: PIN ASSIGNMENTS....................89 APPENDIX C: SPECIFICATIONS....................90 APPENDIX D: SSH CLIENT ......................93...

  • Page 7: Chapter 1 Introduction

    802.11g wireless LAN access point. It has robust routing capabilities to segment and direct data streams and allows for multiple data encapsulations. The NexusLink 5700 is a black box solution for deploying Triple Play architectures, doubling bandwidth (48Mbps) performance over traditional ADSL2 modems. It provides higher level performance with embedded security, QoS, VPN and remote management functions.

  • Page 8: Application

    1.2 Application This diagram depicts the application of the NexusLink 5700 on a wireless network.

  • Page 9: Front Panel Led Indicators

    1.3 Front Panel LED Indicators The front panel LED indicators are shown in the picture below, followed by an explanation in the table below. Color Mode Function POWER Green The router is powered up. The router is powered down. Green An Ethernet Link is established.

  • Page 10: Chapter 2 Installation

    Chapter 2 Installation 2.1 Hardware Installation Follow the instructions below to complete the hardware installation. A schematic of the back of the router is shown below for reference. Reset button Connection to Power Connect the power jack to the shipped power cord. Attach the power adapter to the wall outlet or other AC source.

  • Page 11: Chapter 3 Login Via Web Browser

    Chapter 3 Login via Web Browser This section describes how to manage the router via a web browser. The web page is best viewed with Microsoft Internet Explorer 5.0 and later. Access Code Required: #0009@3BFA. The user can change the Access Code later (see Password).

  • Page 12: Login Procedure

    3.2 Login Procedure Perform the following steps to bring up the web browser and configure the router. STEP 1: Start the Internet browser. Type the IP address for the router in the Web address field. For example, if the IP address is 192.168.1.254, type http://192.168.1.254...

  • Page 13: Chapter 4 Device

    Chapter 4 Device Select the Device button from the main menu to display the Device Summary information as here.

  • Page 14: Device Summary

    4.1 Device Summary The main menu has several options, and selecting each of these options opens a submenu with more selections. Subsequent sections will introduce the other main menu options in sequence. The Device Summary screen will display at startup.

  • Page 15: Reset Statistics

    4.2 Reset Statistics To reset all statistics including LAN, WAN and xDSL click Reset Statistics. When the following window is displayed, simply click the Reset Statistics button to confirm your choice.

  • Page 16: Troubleshoot

    4.3 Troubleshoot Your device is capable of testing your DSL connection. Click Troubleshoot and the diagnostics window will display. The Diagnostics menu provides feedback on the connection status of the device and the ADSL link. Click Troubleshoot to bring up the following window. The individual test results are explained below.
  • Page 17 Test Description Ethernet Connection Pass: indicates that the Ethernet interface from your computer is connected to the LAN port of your DSL router. A flashing or solid green LAN LED on the router also signifies that an Ethernet connection is present and that this test is successful.

  • Page 18: Wireless

    4.4 Wireless This page allows you to configure basic features of the wireless LAN interface. You can enable or disable the wireless LAN interface, hide the network from active scans, set the wireless network name (also known as SSID) and restrict the channel set based on country requirements.
  • Page 19 The options shown here allow you to configure security features of the wireless LAN interface.

  • Page 20: Enable Wireless

    4.4.1 Enable Wireless Option Description Enable Wireless A checkbox that enables or disables the wireless LAN interface. When selected, the Web UI displays Hide Access point, SSID, and County settings. The default is Enable Wireless. 4.4.2 Wireless - Security Configure Wireless security settings can be configured according to Wi-Fi Protected Setup (WPS) or Manual Setup.
  • Page 21 The settings for WPA authentication are shown below. The settings for WPA-PSK authentication are shown next. WEP Encryption This option specifies whether data sent over the network is encrypted. The same network key is used for data encryption and network authentication. Four network keys can be defined although only one can be used at any one time.
  • Page 22 Security options include authentication and encryption services based on the wired equivalent privacy (WEP) algorithm. WEP is a set of security services used to protect 802.11 networks from unauthorized access, such as eavesdropping; in this case, the capture of wireless network traffic. When data encryption is enabled, secret shared encryption keys are generated and used by the source station and the destination station to alter frame bits, thus avoiding disclosure to eavesdroppers.

  • Page 23: Wps Setup

    Every WPS certified device has both a PIN number and a push button, located on the device or accessed through device software. The NexusLink 5700 has both a WPS button on the device and a virtual button accessible from the web user interface (WUI).
  • Page 24 NOTES: Your client may or may not have the ability to provide security settings to the NexusLink 5700. If it does not, then you must set the WPS AP mode to Configured. Consult the device documentation to check its capabilities.
  • Page 25 WPS AP mode selected in step 2. For Configured mode, click the Add Enrollee button. Step 7: Go to your WPS wireless client and activate the push-button function on your NexusLink 5700. A typical WPS client screenshot is shown below as an example.
  • Page 26 Now go to Step 8 (part IV. Check Connection) to check the WPS connection. IIIb. WPS – PIN CONFIGURATION Using this method, security settings are configured with a personal identification number (PIN). The PIN can be found on the device itself or within the software. The PIN may be generated randomly in the latter case.

  • Page 27: Wireless - Advanced Configure

    Step 7: Activate the PIN function on the wireless client. For Configured mode, the client must be configured as an Enrollee. For Unconfigured mode, the client must be configured as the Registrar. This is different from the External Registrar function provided in Windows Vista. The figure below provides an example of a WPS client PIN function in-progress.

  • Page 29: Restart Your System

    4.5 Restart Your System Should you want to reboot the NexusLink 5700, please follow the instructions provided below.
  • Page 30 Click Restart your System to bring up the following window. When the following window is displayed, simply click the Reboot button to confirm your choice. The following window will display.

  • Page 31: Home Network

    4.6 Home Network Click Home Network to bring up the following window.
  • Page 32 Heading Description Interface LAN interface(s) Received/Transmitted: - Bytes Number of Bytes - Pkts Number of Packets - Errs Number of packets with errors - Drops Number of dropped packets Click the button to refresh this screen.

  • Page 33: Gaming And Applications

    4.7 Gaming and Applications This window allows you to modify your firewall settings. Click Gaming and Applications to bring up the following window.

  • Page 34: Incoming Traffic Control

    4.7.1 Incoming Traffic Control 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. The default setting for all Incoming traffic is Blocked.
  • Page 35 Filter Name Type a name for the filter rule. Rule Order Execute IP Filter order. (Available in future versions). IP Version IPv4 selected by default. Protocol User can select: TCP, TCP/UDP, UDP or ICMP. Source IP address Input source IP address. Source Subnet Mask Input source subnet mask.

  • Page 36: Outgoing Traffic Control

    4.7.2 Outgoing Traffic Control 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. The default setting for all Outgoing traffic is Accepted.
  • Page 37 To add a filtering rule, click the button. The following window will be displayed. Filter Name Type a name for the filter rule. Rule Order Execute IP Filter order. (Available in future versions). IP Version IPv4 selected by default. Protocol User can select: TCP, TCP/UDP, UDP or ICMP.

  • Page 38: Reset Access Code

    Click to delete a filter. 4.8 Reset Access Code To help prevent unauthorized access to your router, be sure you record your Modem Access Code and safeguard it just as you would any other password or PIN number. Should you need access to your router (for example, to make configuration changes or to change your Internet Service Provider login password) you will need the modem access code.
  • Page 39 to se to default.

  • Page 40: Chapter 5 Broadband

    Chapter 5 Broadband This window shows the existing WAN status. 5.1 Status Click Broadband to display the status of all configured PVC(s). Port/VPI/VCI Shows the values of the ATM Port/VPI/VCI VLAN Mux Shows 802.1Q VLAN ID Con. ID Shows the connection ID Category Shows the ATM service classes Service...

  • Page 41: Configure

    5.2 Configure Click Configure will bring up the following window. Input the access code (which is located ______) and click the button. The options are shown (on the following page)
  • Page 42 Select the configuration for the broadband utilization of the DSL lines. Any Changes to DSL Bonding Config will require a reboot. Select one of the three options (DSL Auto, DSL on inner pair, DSL on outer pair) from the drop down menu and tick the Enable 802.1x auto start box if required. Click the button to confirm your choice(s).

  • Page 43: Chapter 6 Home Network

    Chapter 6 Home Network The Home Network – LAN Status screen shows interface statistics for Ethernet and Wireless interfaces. 6.1 LAN Status The Network Statistics screen shows interface statistics for LAN of Ethernet interface. Here provides byte transfer, packet transfer, Error and Drop statistics for the LAN interface.) Click the button to refresh this screen.

  • Page 44: Configure

    6.2 Configure Click Configure to bring up the following window. Input the access code (which is located ______) and click the button. The options are shown (on the following page)
  • Page 45 Configure the DSL router IP address and subnet mask for the LAN interface. IP ADDRESS: ENTER THE IP ADDRESS FOR THE LAN PORT. SUBNET MASK: ENTER THE SUBNET MASK FOR THE LAN PORT. DHCP Server: To enable DHCP, select Enable DHCP server and enter Start and End IP addresses and the Leased Time.
  • Page 46 Click to add a DHCP static IP lease. The following window will be displayed. Input the MAC address and Static IP address and then click To remove an entry, tick the corresponding checkbox in the Remove column and then click the button.
  • Page 47 To create a new subnet group for LAN Devices: 1. Enter the Group name and the group name must be unique 2. Select the intended application of the new subnet group 3. Enter the corresponding IP and DHCP address 4. Passthrough MAC Address only needs to be entered in passthrough mode for the specific device that needs to share the WAN IP address 5.
  • Page 48 IP Address: Enter the secondary IP address for the LAN port. Subnet Mask: Enter the secondary subnet mask for the LAN port. Click to confirm. Ethernet Media Type: Each LAN port has Speed/Duplex Negotiation detection capability, the LAN ports detect the speed (for example, 10MBps, 100Mbps) and duplex (half-duplex or full-duplex) settings of the device on the other end of the wire and subsequently adjusts to match those settings.

  • Page 49: Wireless Status

    6.3 Wireless Status Click Wireless Status to bring up the following window. Click to reset the screen.

  • Page 50: Wireless Configure

    6.4 Wireless Configure This page allows you to configure basic features of the wireless LAN interface. You can enable or disable the wireless LAN interface, hide the network from active scans, set the wireless network name (also known as SSID) and restrict the channel set based on country requirements.

  • Page 51: Wireless Mac Filter

    6.5 Wireless MAC Filter When a device is using MAC filtering, any address not explicitly defined will be denied access. This MAC Filter page allows access to be restricted/allowed based on a MAC address. All (Network Interface Cards) NICs have a unique 48-bit MAC address burned into the ROM chip on the card.
  • Page 52 MAC Restrict mode: Off- disables MAC filtering; Allow – permits access for the specified MAC address; deny; reject access of the specified MAC address, then click the SET button. Option Description Radio buttons that allow settings of; Restrict Off: MAC filtering function is disabled. Mode Allow: Permits PCs with listed MAC addresses to connect to access point.

  • Page 53: Chapter 7 Voip

    Signaling allows call information to be carried across network boundaries. Session management provides the ability to control the attributes of an end-to-end call. (1) The NexusLink 5700 supports Phone Line (FXS) interface only, which cannot dial to the local PSTN network. NOTE: The SIP standard is set by the Internet Engineering Task Force (IETF).

  • Page 54: Status

    7.1 Status Displays the call summary. 7.2 SIP Click SIP to bring up the following window. The settings of Global Parameters and Service Provider please contact with your ISP...

  • Page 55: Global Parameters

    servicer. 7.2.1 Global Parameters Start SIP client: Active SIP service (Internet telephony calls) Stop SIP client: Inactive SIP service (Internet telephony calls) About the setting of Global Parameters or want to know any detail information please contact with your ISP servicer. A common parameter setting.

  • Page 56: Service Provider

    7.2.2 Service Provider This screen contains basic SIP configuration settings. Start SIP client: Active SIP service (Internet telephony calls) Stop SIP client: Inactive SIP service (Internet telephony calls) About the setting of Service Provider or want to know any detail information please contact with your ISP servicer.
  • Page 57 Once settings are configured, click to begin using the service. Click to cease using the service.

  • Page 58: Rtcp

    7.3 RTCP For VoIP voice quality reporting, a SIP event package is specified to report RTCP and RTCP-XR summaries; SIP method options are provided to convey such events to a collector. 7.3.1 Global Parameters A common parameter setting.

  • Page 59: Service Provider

    7.3.2 Service Provider This screen contains basic SIP configuration settings. NL5700 will collect and report on a set of voice quality metrics on a per-call basis to a centralized collector via SIP. There are two primary components: First, an IETF-proposed specification is customized to define the format of a Voice Quality (VQ) report and to select metrics contained within the report.

  • Page 60: Telephone Calls

    7.4 Telephone Calls AT&T CVoIP Star Codes This tab is a list of star codes planned for use by AT&T CVoIP. Code Description Blind Transfer - Invoke Call Forwarding to Voice Mail - Activate *312 Simultaneous Ringing - Activate *313 Simultaneous Ringing - Deactivate *370 Call Waiting - Activate (persistent)
  • Page 61 Distinctive ring Calling Line Identification Restriction – Cancel (make public) Selective Call Forwarding - Deactivate Selective Call Acceptance - Deactivate Automatic Call Back Deactivate Anonymous Call Rejection - Deactivate Automatic Recall Deactivate Call Forwarding Busy - Activate Call Forwarding Busy - Deactivate Call Forwarding No Answer - Activate Call Forwarding No Answer - Deactivate Automatic Call Control VRU...

  • Page 62: Chapter 8 Firewall

    Chapter 8 Firewall The gateway is protected by firewall from unfriendly network attacks on the system. 8.1 Status Displays your firewall setting. 8.2 Inbound Filter See section: 4.7.1 Incoming Traffic Control for a detailed description. 8.3 Outbound Filter See section: 4.7.2 Outgoing Traffic Control for a detailed description...

  • Page 63: Port Forwarding

    8.4 Port Forwarding Port forwarding allows 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.
  • Page 64 Click to display the following window. Select a Service User should select the service from the list. Custom Server User can enter the name of their choice. Server IP Address Enter the IP address for the server. External Port Start Enter the starting external port number (when you select Custom Server).
  • Page 65 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. Click to forward IP packets for this service to the specified server. Click to delete an entry.

  • Page 66: Port Triggering

    8.5 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’.
  • Page 67 Select an Application User should select the application from the list. Or Custom Application Or User can enter the name of their choice. Trigger Port Start Enter the starting trigger port number (when you select custom application). When an application is selected the port ranges are automatically configured.

  • Page 68: Chapter 9 Maintenance

    Chapter 9 Maintenance The Diagnostics menu provides feedback on the connection status of the device and the ADSL link. The individual tests are listed below. 9.1 Test The individual tests are listed below. If a test displays a fail status, click "Rerun Diagnostic Tests"...

  • Page 69: Dsl

    9.2 DSL Click DSL to display the xDSL Diagnostics window. Consult the table below for descriptions of each field.

  • Page 70: Xdsl Ber Test

    Field Description Mode Line Coding format, that can be selected G.dmt, G.lite, T1.413, ADSL2 Traffic Type Channel type Interleave or Fast Status Lists the status of the DSL link Link Power State Link output power state. Line Coding Trellis On/Off SNR Margin (dB) Signal to Noise Ratio (SNR) margin Attenuation (dB)
  • Page 71 (BER). A small pop-up window will open after the button is pressed, as shown below. Click Start to start the test or click Close to cancel the test. After the BER testing is complete, the pop-up window will display as follows.

  • Page 72: Reset Statistics

    9.2.2 Reset Statistics Click to refresh the screen. 9.2.3 Draw Graph Tone Click to display the current xDSL bits per tone status. The X axis represents Tone Number and the Y axis represents Bit Allocation.

  • Page 73: Draw Loss Of Signal Graph

    9.2.4 Draw Loss of Signal Graph Click to display the loss of signal within each 15 minute intervals for the last 24 hours. The X axis represents Time and the Y axis represents Errors Observed. 9.2.5 Draw Loss of Frames Graph Click to display the loss of frames within each 15 minute...

  • Page 74: Loss Of Power

    intervals for the last 24 hours. The X axis represents Time and the Y axis represents Errors Observed. 9.2.6 Loss of Power Click to display the loss of power within each 15 minute intervals for the last 24 hours. The X axis represents Time and the Y axis represents Errors Observed.

  • Page 75: Ping/Traceroute/Nslookup

    9.3 Ping/Traceroute/NSLookup Click Ping/Traceroute/NSLookup to bring up the following window. 9.3.1 Ping Ping: Used to test the reach ability of a host on an Internet Protocol (IP) network and to measure the round-trip time for messages sent from the originating host to a destination computer Click to seek a reply from an IP address.

  • Page 76: Traceroot

    9.3.2 TraceRoute TraceRoute: Used to show the route taken by packets across an IP network Traceroute is often used for network troubleshooting. By showing a list of routers traversed, it allows the user to identify the path taken to reach a particular destination on the network.

  • Page 77: System Log

    Click to lookup the name server of an IP address. 9.4 System Log The System Log option allows you to view the system events log. Click System Log to bring up the following window.

  • Page 78: Refresh

    9.4.1 Refresh Click to update the System Log. 9.4.2 Export Syslog Click to bring up the following window.
  • Page 79 Click to save the system log file.

  • Page 80: Password

    9.5 Password Click Password to bring up the following window. Input the access code (which is located ______) and click The options are shown (on the following page)

  • Page 81: Use New Access Code

    9.5.1 Use New Access Code Select User, enter the current access code and the new access code. Hen retype the new access code. Click 9.5.2 Clear Input Click to delete what you have entered. 9.5.3 Reset to Default Access Code Click to reset to default.

  • Page 82: Upgrade

    9.6 Upgrade Click Upgrade to bring up the following window. Input the access code (which is located ______) and click The options are shown (on the following page) Click to start the upgrade process.

  • Page 83: Reboot

    9.7 Reboot Click to reboot the gateway. The following window will be displayed.

  • Page 84: Factory Reset

    9.8 Factory Reset Click Factory Reset to bring up the following window. Input the access code (which is located ______) and click The options are shown (on the following page) Click to restore the DSL gateway to the factory defaults.
  • Page 85 Click OK to confirm. Click OK to confirm.

  • Page 86: Appendix A: Firewall

    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.
  • Page 87 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: Filter Name : Out_Filter1...
  • Page 88 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.
  • Page 89 Filter Name : In_Filter2 Protocol : UDP Source Address : 210.168.219.45 Source Subnet Mask : 255.255.0.0 Source Port : 5060:6060 Dest. Address :192.168.1.45 Dest. Sub. Mask : 255.255.255.0 Dest. Port : 6060:7070 This rule will ACCEPT all UDP packets coming from WAN interface mer_0_35/nas_0_35 with IP Address/Sub.

  • Page 90: Appendix B: Pin Assignments

    Appendix B: Pin Assignments Line port (RJ14) Definition Definition ADSL_TIP1 ADSL_TIP2 ADSL_RING2 ADSL_RING1 LAN Port (RJ45) Definition Definition Transmit data+ Transmit data- Receive data- Receive data+...

  • Page 91: Appendix C: Specifications

    Appendix C: Specifications Rear Panel RJ-14 X1 for ADSL2+ bonded, RJ-45 X 4 for LAN, Reset Button X 1, WPS button x1, WIFI button x1 Wi-Fi Antenna x 1 ADSL ADSL standard ITU-T G.992.5, ITU-T G.992.3, ITU-T G.992.1, ANSI T1.413 Issue 2AnnexM ADSL2 Bonded Downstream : 48 Mbps Upstream : 2.6 Mbps ADSL2+ Bonded...
  • Page 92 selected according to the environment ATM Attributes RFC 2364 (PPPoA), RFC 2684 (RFC 1483) Bridge/Route; RFC 2516 (PPPoE); RFC 1577 (IPoA) Support PVCs AAL type AAL5 ATM service class UBR/CBR/VBR-rt/VBR-nrt ATM UNI support UNI3.1/4.0 OAM F4/F5 Management SNMP, Telnet, Web-based management, Configuration backup and restoration Software upgrade via HTTP, TFTP server, or FTP server Supports TR-069/TR-098/TR-111 for Remote Management Bridge Functions...
  • Page 93 Application Passthrough PPTP, L2TP, IPSec, VoIP, Yahoo messenger, ICQ, RealPlayer, NetMeeting, MSN, X-box, etc OS Supported for USB driver Windows 2000/XP/ME/98SE Power Supply External power adapter 100-240Vac Environment Condition Operating temperature 0 ~ 40 degrees Celsius Relative humidity 5 ~ 95% (non-condensing) Dimensions 205 mm (W) x 48 mm (H) x 145 mm (D) Certifications...

  • Page 94: Appendix D: Ssh Client

    Appendix D: SSH Client Linux OS comes with ssh client. Microsoft Windows does not have ssh client but there is a public domain one “putty” that you can download. http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html To access the router using Linux ssh client: From LAN: Use the router WEB UI to enable SSH access from LAN. (default is enabled) type: ssh -l admin 192.168.1.1 From WAN: In the router, use WEB UI to enable SSH access from WAN.

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