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3Com® Telecommuting Module User
Manual
Version 4.3
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3Com® Telecommuting Module User Manual: Version 4.3 Part Number BETA Published December 2005 3Com Corporation, 350 Campus Drive, Marlborough MA 01752-3064 Copyright © 2005, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation. 3Com Corporation reserves the right to revise this documentation and to m
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Table of Contents Part I. Introduction to 3Com VCX IP Telecommuting Module ............................................................................. i 1. Introduction to 3Com VCX IP Telecommuting Module.................................................................................1 2. Installing 3Com VCX IP Telecommuting Module..........................................................................................5 3. Configuring 3Com VCX IP Telecommuting Module ..........................
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Part I. Introduction to 3Com VCX IP Telecommuting Module
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Chapter 1. Introduction to 3Com VCX IP Telecommuting Module Some of the functions of 3Com VCX IP Telecommuting Module are: • SIP proxy: Forwarding of SIP requests. • Protection against such attacks as address spoofing. • Logging/alarm locally on the Telecommuting Module, via email and/or via syslog. • Managing several logical/directly-connected networks and several network connections/physical networks. • Administration of the Telecommuting Module through a web browser using http or https. • Fail
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Chapter 1. Introduction to 3Com VCX IP Telecommuting Module Fig 1. Telecommuting Module in DMZ configuration. DMZ/LAN Configuration Using this configuration, the Telecommuting Module is located on the DMZ of your firewall, and connected to it with one of the interfaces. The other interface is connected to your internal network. The Telecommuting Module can handle several networks on the internal interface even if they are hidden behind routers. No networks on other interfaces on the firewall can be h
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Chapter 1. Introduction to 3Com VCX IP Telecommuting Module • Select an IP address for the Telecommuting Module on your network. • The network interfaces are marked with 1 and 2. These numbers correspond to the physical interfaces eth0 and eth1 respectively, the latter which should be use in the installation program. • Plug in the power cord and turn on the Telecommuting Module. • Wait while the Telecommuting Module boots up. • Connect the network cables to the network interfaces. • Find out the
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Chapter 1. Introduction to 3Com VCX IP Telecommuting Module When the Telecommuting Module is configured, the firewall connected to it must also be reconfigured (for the DMZ and DMZ/LAN Telecommuting Module Types). • Allow UDP and TCP traffic in the port interval used for media streams by the Telecommuting Module, and port 5060. This traffic must be allowed to all networks which should be reached by SIP traffic. See also chapter 14, Firewall and Client Configuration, for information on configuring the fir
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Chapter 2. Installing 3Com VCX IP Telecommuting Module Installation There are three ways to install an 3Com VCX IP Telecommuting Module: using a serial cable, using a diskette or perform a magic ping. Installation with a serial cable or a diskette requires being at the same place as the Telecommuting Module, but will give more options for the start configuration. Installation with magic ping does not require being on the same place as the Telecommuting Module (but the computer has to be connected
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Chapter 2. Installing 3Com VCX IP Telecommuting Module • Ping this IP address to give the Telecommuting Module its new IP address. You should receive a ping reply if the address distribution was successful. • Configure the rest through a web browser. Installation with a serial cable These steps are performed when installing with a serial cable: • Connect the Telecommuting Module to your workstation with a null modem serial cable. • Plug in the power cord and turn the Telecommuting Module on. • Wa
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Chapter 2. Installing 3Com VCX IP Telecommuting Module Then enter a password for the Telecommuting Module. This is the password you use in your web browser to access and change the Telecommuting Module’s configuration. Finally, you can reset all other configuration if you want to. Following is a sample run of the installation program. 3Com VCX IP Telecommuting Module Administration 1. Basic configuration 2. Save/Load configuration 3. Become a failover team member 4. Leave failover team and become st
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Chapter 2. Installing 3Com VCX IP Telecommuting Module Telecommuting Module). The network mask determines the number of computers that can act as configuration computers. Network number [0.0.0.0]:10.47.2.0 Netmask/bits [255.255.255.0]:255.255.255.0 If the network or partial network is not directly connected to the Telecommuting Module, you must enter the IP address of the router leading to that network. Then enter the network’s address and mask. Static routing: The network allowed to configure fro
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Chapter 2. Installing 3Com VCX IP Telecommuting Module You have now entered the following configuration Network configuration inside: Physical device name: eth0 IP address: 192.168.150.2 Netmask: 255.255.255.0 Deactivate other interfaces: no Computer allowed to configure from: IP address: 192.168.128.3 Password: eeyore The rest of the configuration is kept. Is this configuration correct (yes/no/abort)?yes Now, finish configuration of the Telecommuting Module from the computer/computers specified in the
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Chapter 2. Installing 3Com VCX IP Telecommuting Module Following is a sample run of the installation program on the diskette. Basic unit installation program version 4.3 Press return to keep the default value Network configuration inside: Physical device name[eth0]: IP address [0.0.0.0]:10.47.2.242 Netmask/bits [255.255.255.0]:255.255.0.0 Deactivate other interfaces? (y/n) [n] Computers from which configuration is allowed: You can select either a single computer or a network. Configure from a singl
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Chapter 2. Installing 3Com VCX IP Telecommuting Module Static routing: The network allowed to configure from is not on a network local to this unit. You must configure a static route to it. Give the IP address of the router on the network this unit is on. The IP address of the router [0.0.0.0]:10.47.3.1 Network address [10.47.0.0]:10.10.0.0 Netmask [255.255.255.0]: Then enter a password. Password []: Finally, you are asked if you want to reset other configuration. Other configuration Do you want to
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Chapter 2. Installing 3Com VCX IP Telecommuting Module Remember to lock up the Telecommuting Module The Telecommuting Module is a computer with special software, and must be protected from unauthorized physical access just as other computers performing critical tasks. A locked up Telecommuting Module protects against: • connecting to the console • connecting a keyboard and monitor • changing the administrator password using the installation diskette. • changing BIOS configuration to allow the Tel
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Chapter 3. Configuring 3Com VCX IP Telecommuting Module You connect to your 3Com VCX IP Telecommuting Module by entering its name or IP address in the Location box of your web browser. Logging on Before you can configure the Telecommuting Module, you must enter your administrator username and password or RADIUS username and password. The admin user is predefined with complete administration privileges. Log on again If you have a web connection for Telecommuting Module configuration that is inactive
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Chapter 3. Configuring 3Com VCX IP Telecommuting Module Note: You will not be logged out automatically just by directing your web browser to a different web address. You should log out using the button to make the browser forget your username and password. Navigation There is a menu for quick navigation to all configuration pages. On top of the page, you also see the name of the Telecommuting Module. Site Map The Site Map is the first page displayed when you have logged on the Telecommuting Module.
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Chapter 3. Configuring 3Com VCX IP Telecommuting Module Basic Configuration Under Basic Configuration, select Telecommuting Module Type and the name of the Telecommuting Module. You also enter IP addresses for gateway and DNS server. Here you also configure if the Telecommuting Module should interact with a RADIUS or an SNMP server. Administration Under Administration, you store or load a configuration. You can also test your configuration to see if it works the way you planned, upgrade or reboot your
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Chapter 3. Configuring 3Com VCX IP Telecommuting Module logging wanted under Logging. This is also where the logs of traffic through the Telecommuting Module are viewed. When the configuration is complete, apply it. Go to Save/Load Configuration under Administration. Select Apply configuration. Now the new configuration is tested. Save it permanently if it works satisfactorily. If the configuration is not satisfactory, select Revert or restart the Telecommuting Module. The old configuration will remain.
