OfficeConnect® Cable/DSL Router User Guide 3CR858-91 http://www.3com.com/ Part No. DUA8589-1AAA01 Rev.
3Com Corporation 350 Campus Drive, Marlborough, MA USA 01752-3064 Copyright © 2004, 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.
CONTENTS ABOUT THIS GUIDE Naming Convention 7 Conventions 8 Feedback about this User Guide Related Documentation 9 1 8 INTRODUCING THE ROUTER OfficeConnect Cable/DSL Router 11 Router Advantages 13 Package Contents 13 Minimum System and Component Requirements Front Panel 14 Rear Panel 16 2 HARDWARE INSTALLATION Introduction 17 Safety Information 17 Positioning the Router 17 Using the Rubber Feet 18 Wall Mounting 18 Connecting the Router 18 3 SETTING UP YOUR COMPUTERS Obtaining an IP Address Automatic
Disabling Web Proxy 4 24 RUNNING THE SETUP WIZARD Accessing the Wizard 25 Password 27 Time Zone 28 Connection Type 29 DNS 35 Hostname and MAC Address LAN Settings 37 Configuration Summary 38 5 36 ROUTER CONFIGURATION Navigating Through the Router Configuration Pages Main Menu 39 LAN Settings 40 Internet Settings 42 Connection to ISP 43 DNS 49 Hostname & MAC 50 Firewall 50 SPI 51 Special Applications 54 Virtual Servers 56 Client IP Filters 57 MAC Address Filtering 62 DMZ 63 VPN 64 Adding an IPSec Conne
Admin Password 76 Time Zone 77 Advanced 79 NAT 79 Universal Plug and Play 80 WAN Ping Blocking 81 Remote Administration 81 Routing 82 DDNS 86 Status and Logs 87 Status 87 Traffic Metering 88 Logs 88 Support/Feedback 89 Support 89 Feedback 90 6 TROUBLESHOOTING Basic Connection Checks 91 Browsing to the Router Configuration Screens 91 Connecting to the Internet 92 Forgotten Password and Reset to Factory Defaults 93 Alert LED 93 Power LED or Power Adapter OK LED Not Lit 94 Replacement Power Adapters 94 Recov
B ISP INFORMATION C TECHNICAL SPECIFICATIONS OfficeConnect Cable/DSL Router Standards 105 105 D SAFETY INFORMATION E OBTAINING SUPPORT FOR YOUR PRODUCT Register Your Product to Gain Service Benefits 111 Purchase Value-Added Services 111 Troubleshoot Online 111 Access Software Downloads 112 Contact Us 112 Telephone Technical Support and Repair 112 F END USER SOFTWARE LICENSE AGREEMENT GLOSSARY REGULATORY NOTICES INDEX
ABOUT THIS GUIDE This guide describes how to install and configure the OfficeConnect Cable/DSL Router (3CR858-91). This guide is intended for use by those responsible for installing and setting up network equipment; consequently, it assumes a basic working knowledge of LANs (Local Area Networks) and Internet Routers. If a release note is shipped with the Cable/DSL Router and contains information that differs from the information in this guide, follow the information in the release note.
ABOUT THIS GUIDE Conventions Table 1 and Table 2 list conventions that are used throughout this guide. Table 1 Notice Icons Icon Notice Type Description Information note Information that describes important features or instructions. Caution Information that alerts you to potential loss of data or potential damage to an application, system, or device. Warning Information that alerts you to potential personal injury.
Conventions 9 Example: ■ OfficeConnect Cable/DSL Router User Guide ■ Part Number DUA8589-1AAA01 ■ Page 24 Do not use this e-mail address for technical support questions. For information about contacting Technical Support, please refer to Appendix E “Obtaining Support for your Product”. Related Documentation In addition to this guide, each Router document set includes one Installation Guide. This guide contains the instructions you need to install and configure your Router.
ABOUT THIS GUIDE
1 INTRODUCING THE ROUTER Welcome to the world of networking with 3Com®. In the modern business environment, communication and sharing information is crucial. Computer networks have proved to be one of the fastest modes of communication but, until recently, only large businesses could afford the networking advantage. OfficeConnect Cable/DSL Router The OfficeConnect Cable/DSL Router is designed to provide a cost-effective means of sharing a single broadband Internet connection amongst several computers.
CHAPTER 1: INTRODUCING THE ROUTER Figure 1 Example Network Without a Router When you use the Router in your network (Figure 2), it becomes your connection to the Internet. Connections can be made directly to the Router, or to an OfficeConnect Switch or Hub, expanding the number of computers you can have in your network.
Router Advantages Router Advantages Package Contents 13 The advantages of the Router include: ■ Shared Internet connection for wired computers.
CHAPTER 1: INTRODUCING THE ROUTER Minimum System and Component Requirements Front Panel Your Router requires that the computer(s) and components in your network be configured with at least the following: ■ A computer with an operating system that supports TCP/IP networking protocols (for example Windows 95/98/NT/Me/2000/XP, Unix, Mac OS 8.5 or higher). ■ An Ethernet 10Mbps or 10/100 Mbps NIC for each computer to be connected to the four-port switch on your Router.
Front Panel 15 In each of these cases, wait until the Router has completed the current operation and the alert LED is Off. Flashing slowly - The Router has completed the Reset to Factory Defaults process, and is waiting for you to reset the unit. To do this, remove power, wait 10 seconds and then re-apply power. The Router will then enter the start-up sequence and resume normal operation.
CHAPTER 1: INTRODUCING THE ROUTER Rear Panel The rear panel (Figure 4) of the Router contains four LAN ports, one Ethernet Cabler/DSL port, and a power adapter socket. Figure 4 Router - Rear Panel 5 8 6 7 5 Power Adapter Socket Only use the power adapter supplied with this Router. Do not use any other adapter. 6 Ethernet Cable/DSL port Use the supplied patch cable to connect the Router to the Ethernet port on your cable or DSL modem.
2 Introduction HARDWARE INSTALLATION This chapter will guide you through a basic installation of the Router, including: ■ “Positioning the Router”. ■ “Connecting the Router”. Safety Information WARNING: Please read the “Safety Information” section in Appendix D before you start. VORSICHT: Bitte lesen Sie den Abschnitt “Wichtige Sicherheitshinweise” sorgfältig durch, bevor Sie das Gerät einschalten.
CHAPTER 2: HARDWARE INSTALLATION Using the Rubber Feet Wall Mounting ■ Water or moisture cannot enter the case of the unit. ■ Air flow around the unit and through the vents in the side of the case is not restricted. 3Com recommends you provide a minimum of 25 mm (1 in.) clearance. Use the four self-adhesive rubber feet to prevent your Router from moving around on your desk or when stacking with flat top units. Only stick the feet to the marked areas at each corner of the underside of your Router.
Connecting the Router 19 3 Ensure that your modem and computer are both switched on. 4 Use the supplied cable to connect the Router’s Ethernet Cable/DSL port to the modem. Check that the Cable/DSL Status LED lights. 5 Connect your computer to one of the 10/100 LAN ports on the Router. Check that the LAN Status LED for the port lights green. See Figure 5 for an example configuration.
CHAPTER 2: HARDWARE INSTALLATION
3 SETTING UP YOUR COMPUTERS The Router has the ability to dynamically allocate network addresses to the computers on your network, using DHCP. However, your computers need to be configured correctly for this to take place. To change the configuration of your computers to allow this, follow the instructions in this chapter.
CHAPTER 3: SETTING UP YOUR COMPUTERS Figure 6 Local Area Properties Screen 6 Ensure that the options Obtain an IP Address automatically, and Obtain DNS server address automatically are both selected as shown in Figure 7. Click OK. Figure 7 Internet Protocol (TCP/IP) Properties Screen 7 Restart your computer.
Obtaining an IP Address Automatically Windows XP 23 If you are using a Windows XP computer, use the following procedure to change your TCP/IP settings: 1 From the Windows Start menu, select Control Panel. 2 Click on Network and Internet Connections. 3 Click on the Network Connections icon. 4 Double click on LAN or High Speed Connection icon. A screen titled Local Area Connection Status will appear. 5 Select Internet Protocol TCP/IP and click on Properties.
CHAPTER 3: SETTING UP YOUR COMPUTERS Disabling PPPoE and PPTP Client Software If you have PPPoE client software installed on your computer, you will need to disable it. To do this: 1 From the Windows Start menu, select Settings > Control Panel. 2 Double click on Internet Options. 3 Select the Connections Tab. A screen similar to Figure 8 should be displayed. 4 Select the Never Dial a Connection option.
4 Accessing the Wizard RUNNING THE SETUP WIZARD The Router setup program is Web-based, which means that it is accessed through your Web browser (Netscape Navigator or Internet Explorer). To use the Setup Wizard: 1 Ensure that you have at least one computer connected to the Router. Refer to Chapter 2 for details on how to do this. 2 Launch your Web browser on the computer. 3 Enter the following URL in the location or address field of your browser: http://192.168.1.1 (as shown in Figure 9).
CHAPTER 4: RUNNING THE SETUP WIZARD The Login screen displays (Figure 10). Figure 10 Router Login Screen 4 Log in by typing the administrator password (the default password is admin) in the System Password field, and clicking Log in. Be sure to bookmark this screen for easy reference if you should want to change the Router settings. The Wizard will attempt to launch automatically, but if it fails, select Setup Wizard from the main menu.
Accessing the Wizard Password 27 Figure 11 Admin Password Screen In the Admin Password screen (Figure 11) 1 Type the Current Password. 2 Type a new password in both the New Password and Confirm New Password boxes. 3 Type in a Login Timeout. This is the amount of time you want the Router to remain inactive before it returns to the login screen. 3Com recommends entering a new password when setting up the Router for the first time. The Router is shipped from the factory with a default password, admin.
CHAPTER 4: RUNNING THE SETUP WIZARD Time Zone Figure 12 Time Zone Screen The Router keeps time by connecting to a Simple Network Time Protocol (SNTP) server. This allows the Router to synchronize the system clock to the Internet. The synchonized clock in the Router is used to record the security log. To set the time zone for your Router, do the following: 1 Select the Base Date and Base Time. The Router will use these settings if it is unable to connect to the Internet or SNTP Server.
Accessing the Wizard 29 down lists. It does not cause the system clock to be updated for daylight savings time automatically. 8 Click Next to display the Connection Type screen. Connection Type Figure 13 Connection Type Screen This Connection Type screen allows you to set up the Router for the type of Internet connection you have. Before setting up your Internet connection mode, have the modem setting information from your ISP ready.
CHAPTER 4: RUNNING THE SETUP WIZARD Dynamic IP Address Mode Figure 14 Dynamic IP Screen 1 Some ISPs require a host name. If your ISP has this requirement, enter the host name in the Host Name text box . 2 Either: ■ If your ISP requires an assigned MAC address, enter the values for a MAC address. Or, ■ If the computer you are now using is the one that was previously connected directly to the cable modem, select Clone. 3 Click Next. The DNS screen displays. Refer to “DNS” on page 35.
Accessing the Wizard 31 PPPoE Mode Figure 15 PPPoE Interface Screen To setup the Router for use with a PPP over Ethernet (PPPoE) connection, do the following: 1 Enter your PPP over Ethernet user name in the User Name text box. 2 Enter your PPP over Ethernet password in the Password text box and enter it again in the Retype Password text box. 3 If required, enter your PPP over Ethernet service name in the Service Name text box. This is optional. Not all ISPs require a PPPoE service name.
CHAPTER 4: RUNNING THE SETUP WIZARD PPTP Mode Figure 16 PPTP Screen To setup the Router for use with a PPTP connection, use the following procedure: 1 Enter your PPTP server address in the PPTP Server Address text box. 2 Enter your PPTP user name in the User ID text box. 3 Enter your PPTP password in the Password text box, and enter it again in the Retype Password text box. 4 Type in an Idle Timeout. This is the amount of time you want the PPTP Server to remain inactive before the session is ended.
Accessing the Wizard 33 Figure 17 L2TP Screen To setup the Router for use with an L2TP connection, do the following: 1 Enter your L2TP server address in the L2TP Server text box. 2 Enter your L2TP user name in the User ID text box. 3 Enter your L2TP password in the Password text box, and enter it again in the Retype Password text box. 4 Type in an Idle Timeout. This is the amount of time you want the L2TP Server to remain inactive before the session is ended.
CHAPTER 4: RUNNING THE SETUP WIZARD Static IP Mode Figure 18 Static IP Mode Screen 1 Enter the IP Address provided by your ISP in the IP Address assigned by your Service Provider text box. 2 Enter the Subnet Mask provided by your ISP in the Subnet Mask text box. 3 Enter the Gateway Address provided by your ISP in the Service Provider Gateway Address text box. 4 Check all of your settings, and then click Next.
Accessing the Wizard DNS 35 Figure 19 DNS Screen To set up the Domain Name Server (DNS) information for your Router, do the following: 1 Either: ■ Check the Automatic from ISP check box. Or, ■ If your ISP has provided you with a specific DNS address to use type the DNS Address in the text box. Optionally, you can type a Secondary DNS Address in the appropriate text box. Leave this box blank if your ISP has not supplied a secondary address. 2 Click Next to display the Hostname and MAC Address screen.
CHAPTER 4: RUNNING THE SETUP WIZARD Hostname and MAC Address Figure 20 Hostname and MAC Address Screen 1 Some ISPs require a host name. If your ISP has this requirement, enter the host name in the Host Name text box. 2 Either: ■ If your ISP requires an assigned MAC address, enter the values for a MAC address. Or, ■ If the computer you are now using is the one that was previously connected directly to the cable modem, select Clone. Or, ■ To reset the MAC Address to the default, select Reset MAC.
Accessing the Wizard LAN Settings 37 Figure 21 LAN Settings Screen LAN Configuration This section of the screen displays a suggested LAN IP Address and Subnet Mask for the Router. It also allows you to change the IP address and subnet mask. DHCP Server Parameters The Router contains a Dynamic Host Configuration (DHCP) server that can automatically configure the TCP/IP settings of every computer on your network.
CHAPTER 4: RUNNING THE SETUP WIZARD Configuration Summary Figure 22 Configuration Summary Screen When you complete the Setup Wizard, a configuration summary displays. Verify the configuration information of the Router and then click Apply to save your settings. 3Com recommends that you print this page for your records. If you have made changes to the LAN Settings, you may need to reconfigure the computer you are using in order to make contact with the Router again.
5 ROUTER CONFIGURATION Navigating Through the Router Configuration Pages Main Menu This chapter describes all the screens available through the Router configuration pages. To get to the configuration pages, browse to the Router by entering the URL in the location bar of your browser. The default URL is http://192.168.1.1 but if you changed the Router LAN IP address during initial configuration, use the new IP address instead.
CHAPTER 5: ROUTER CONFIGURATION Figure 23 Main menu and Firewall sub-menu LAN Settings Your Router is equipped with a DHCP server that will automatically assign IP addresses to each computer on your network. The factory default settings for the DHCP server will work in most applications. If you need to make changes to the settings, you can do so. The changes that you can make are: ■ Change the Internal IP address of the Router. The default is 192.168.1.1 ■ Change the Subnet Mask.
LAN Settings 41 To configure the LAN Settings: 1 Select LAN Settings from the main menu to display the LAN Settings screen (Figure 24). Figure 24 LAN Settings screen 2 Specify the Router IP Address and Subnet Mask in the appropriate fields. The default IP address of the Router is 192.168.1.1. 3 If you want to use the Router as a DHCP Server, select the On radio button.
CHAPTER 5: ROUTER CONFIGURATION DHCP Clients List The DHCP Clients List provides details on the devices that have received IP addresses from the Router. The list is only created when the Router is set up as a DHCP server. For each device that is connected to the LAN the following information is displayed: ■ IP address — The Internet Protocol (IP) address issued to the client machine. ■ Host Name — The client machine’s host name, if configured.
Internet Settings 43 When you install the Router, you will not need to use the PPPoE software on your PC. PPTP (DSL or Cable) PPTP is only used by some European providers. If the installation instructions that accompany your modem ask you to setup a dialup connection using a PPTP VPN tunnel then select this option.
CHAPTER 5: ROUTER CONFIGURATION ■ Dynamic IP Address (automatically allocated) — see page 44. ■ PPPoE (used by DSL providers only) — see page 45 ■ PPTP (used by some European providers) — see page 46 ■ L2TP (supported by some ISPs) — see page 47 ■ Static IP Address (to be specified manually) — see page 48 Dynamic IP Address To configure the dynamic IP address connection for your Router: 1 Select Dynamic IP Address and then click Next. The Dynamic IP Screen displays (see Figure 25).
Internet Settings 45 PPPoE To configure the PPPoE connection for your Router: 1 Select PPPoE and then click Next. The PPPoE Interface screen displays (see Figure 26). Figure 26 Internet Settings - PPPoE Interface Screen 2 Enter your PPP over Ethernet user name in the User Name text box. 3 Enter your PPP over Ethernet password in the Password text box and enter it again in the Retype Password text box. 4 If required, enter your PPP over Ethernet service name in the Service Name text box. This is optional.
CHAPTER 5: ROUTER CONFIGURATION PPTP To configure the PPTP connection for your Router: 1 Select PPTP and then click Next. The PPTP screen displays (see Figure 27). Figure 27 Internet Settings - PPTP Screen 2 Enter your PPTP server address in the PPTP Server Address text box. 3 Enter your PPTP user name in the User ID text box. 4 Enter your PPTP password in the Password text box, and enter it again in the Retype Password text box. 5 Type in an Idle Timeout.
Internet Settings 47 L2TP Check with your ISP to make sure they support L2TP. To configure the L2TP connection for your Router: 1 Select L2TP and then click Next. The L2TP screen displays (see Figure 28). Figure 28 Internet Settings - L2TP Screen 2 Enter your L2TP server address in the L2TP Server text box. 3 Enter your L2TP user name in the User ID text box. 4 Enter your L2TP password in the Password text box, and enter it again in the Retype Password text box. 5 Type in an Idle Timeout.
CHAPTER 5: ROUTER CONFIGURATION Static IP Address To configure a Static IP Address for your Router: 1 Select Static IP Address and then click Next. The Static IP Address screen displays (see Figure 29). Figure 29 Internet Settings - Static IP Screen 2 Enter the IP Address provided by your ISP in the IP Address assigned by your Service Provider text box. 3 Enter the Subnet Mask provided by your ISP in the Subnet Mask text box.
Internet Settings DNS 49 To configure the Domain Name Server (DNS) information for your Router, do the following: 1 Select Internet Settings, then from the sub-menu select DNS. The DNS screen displays (see Figure 30). Figure 30 Internet Settings - DNS Screen 1 Either: ■ Check the Automatic from ISP check box. Or, ■ If your ISP has provided you with a specific DNS address to use, or you chose Static IP Address in the Internet Settings screen, type the DNS Address in the text box.
CHAPTER 5: ROUTER CONFIGURATION Hostname & MAC To configure the Hostname and MAC Address information for your Router, do the following: 1 Select Internet Settings, then from the sub-menu select Hostname & MAC. The Hostname and MAC Address screen displays (see Figure 31). Figure 31 Internet Settings - Hostname and MAC Address Screen 1 Some ISPs require a host name. If your ISP has this requirement, enter the host name in the Host Name text box.
Firewall 51 ■ Special Applications — Special Applications allows you to specify ports to be open for specific applications to work properly with the Network Address Translation (NAT) feature of the Router. See “Special Applications” on page 54. ■ Virtual Servers — This function enables you to route external (Internet) calls for services such as a web server, FTP server, or other applications through your Router to your internal network. See “Virtual Servers” on page 56.
CHAPTER 5: ROUTER CONFIGURATION To configure SPI information on your Router: 1 Select Firewall from the main menu, then select SPI from the sub-menu to display the SPI screen (Figure 32 and Figure 33): Figure 32 SPI Screen - upper section Figure 33 SPI Screen - lower section Intrusion Detection Feature The Intrusion Detection feature limits access for incoming traffic at the WAN ports. 2 Check the SPI and Anti-DoS firewall protection check box to enable SPI.
Firewall 53 3 If required, check the RIP defect check box. This feature stops unacknowledged packets from accumulating in the input queue. Stateful Packet Inspection 4 The Stateful Packet Inspection section displays a list of traffic types. If you leave the check box for a traffic type blank, this traffic type is blocked. If you check the check box, the Router allows this type of incoming traffic, but only if the connection was initiated from the local LAN.
CHAPTER 5: ROUTER CONFIGURATION DoS Detect Criteria 15 In the Total incomplete TCP/UDP sessions HIGH text box, enter the number of unestablished sessions that will cause the software to start deleting half-open sessions. The defaiult is 300. 16 In the Total incomplete TCP/UDP sessions LOW text box, enter the number of unestablished sessions that must be reached before the software stops deleting half-open sessions. The default is 250.
Firewall 55 To set up one of the listed Special Applications on your Router, do the following: 1 Select Firewall from the main menu, then select Special Applications from the sub-menu. The Special Applications screen displays (Figure 34). Figure 34 Special Application Screen 2 Select an application from the Popular Applications drop-down list. 3 Select the row that you want to copy the settings to from the Copy To drop-down list, and click on Copy To.
CHAPTER 5: ROUTER CONFIGURATION 4 Click Apply to save the setting for this application. Virtual Servers This function will allow you to route external (Internet) calls for services such as a web server (port 80), FTP server (Port 21), or other applications through your Router to your internal network. Since your internal computers are protected by a firewall, machines from the Internet cannot get to them because they cannot be 'seen'.
Firewall 57 Figure 36 Virtual Server - Add/Edit Screen 3 Enter the IP address of the internal machine in the LAN IP Address text box. 4 Select a protocol type (TCP, UDP or both) from the Protocol Type drop-down list. 5 Enter the LAN Port which the traffic will be routed to in the LAN Port text box. 6 Enter the Public port that will be seen by clients on the Internet in the Public Port text box. 7 Check the Enable check box to activate this Virtual Server. 8 Click Apply to save this Virtual Server entry.
CHAPTER 5: ROUTER CONFIGURATION To configure Access Control, do the following: 1 Select Firewall from the main menu, then select Client IP Filters from the sub-menu, and make sure the Access Control tab is selected. The Access Control screen displays (Figure 37). Figure 37 Access Control Screen 2 At the Enable Filtering Function radio buttons, select Enable or Disable to enable or disable all Access Control rules. 3 Click Apply to save the settings.
Firewall 59 To control access to specific Internet services: 1 Click on Add PC, or click Edit in the Configure column to edit an existing entry. The Access Control - Add PC screen displays (Figure 38). Figure 38 Access Control - Add PC Screen 2 Enter a description for the filter you are defining in the Client PC Description field. 3 Enter the IP address or IP address range into the Client IP Address fields. 4 Select the services to be blocked.
CHAPTER 5: ROUTER CONFIGURATION Figure 39 URL Filter Screen To configure URL Filtering, do the following: 1 Enter the URLs or keywords to be allowed or blocked in the URL/Keyword column. 2 Select either Denied or Allowed from the Mode drop-down list to deny or allow access to web site containing these words. For example, entering a keyword of “sex” would block access to any URL that contains the string “sex”. However, this would also filter the following URLs: ■ www.sussex.com ■ www.thisexample.
Firewall 61 you set up here are available for selection when you configure access control (see “Access Control”on page 57). To configure a schedule rule, do the following: 1 Select Firewall from the main menu, then select Client IP Filters from the sub-menu, and select the Schedule Rule tab. The Schedule Rule screen displays (Figure 40). Figure 40 Schedule Rule Screen 2 Click Add Rule, or click Edit in the Configure column to edit an existing entry.
CHAPTER 5: ROUTER CONFIGURATION Figure 41 Schedule Rule - Add Rule Screen 3 Enter a name and comment for the schedule rule in the Name and Comment text boxes. 4 Specify the schedule rules for the required days and times. Note that all times should be in 24 hour format. 5 Click Apply to save the settings. MAC Address Filtering The MAC Address Filter is a powerful security feature that allows you to specify which computers are allowed on the network.
Firewall 63 To set up MAC Address Filtering, do the following: 1 Select Firewall from the main menu, then select MAC Address Filtering from the sub-menu. The MAC Address Filtering screen displays (Figure 42). Figure 42 MAC Address Filtering 2 To enable this feature, click the Enable radio button. 3 Enter the MAC address of each client on your network that you want to allow network access in the MAC Address text boxes.
CHAPTER 5: ROUTER CONFIGURATION To put a computer in the DMZ, do the following: 1 Select Firewall from the main menu, then select DMZ from the sub-menu. The DMZ screen displays (Figure 43). Figure 43 DMZ Screen 2 Select the ENABLE radio button. 3 The first row in the Public IP Address column defaults to the IP address of the WAN interface. Enter the last digits of the client PCs IP address in the Client PC IP Address text box.
VPN 65 connection between two devices, make sure that they support the same encryption method. Enabling IPSec VPN disables pass-through to IPSec and L2TP over IPSec Virtual Servers on the LAN. Pass-through outbound from clients on the LAN to servers on the Internet is unaffected. ■ PPTP (Point-to-Point Tunneling Protocol) — provides a secure tunnel for remote client access to a PPTP security gateway. It is not as secure as IPSec but is easy to administer.
CHAPTER 5: ROUTER CONFIGURATION To configure a VPN connection on your Router: 1 Select VPN from the main menu.The VPN screen displays (Figure 44). Figure 44 VPN Screen 2 In the Enable VPN section, select the Yes radio button for the connection methods you want to use. IPSec must be enabled if you want to use L2TP over IPSec. 3 To set up the Router for L2TP and PPTP, you must allocate IP addresses from the Router’s LAN for use with the protocol.
VPN Adding an IPSec Connection 67 To add an IPSec Connection, or to edit an existing IPSec connection: 1 In the VPN screen, click Add, or click Edit to edit an existing connection. 2 At the Tunnel Type drop-down list, select IPSec. The screen shown in Figure 45 displays. Figure 45 VPN Tunnel Configuration - IPSec Screen 3 Enter a descriptive name for the tunnel at the Tunnel Name text box. 4 At the Remote VPN Server drop-down list, select either IP Address or ANY.
CHAPTER 5: ROUTER CONFIGURATION 8 Enter the Network Address and Subnet Mask of the local secure group. The network address of the local secure group is usually the network address of the local network.From the Key Management drop-down list, select either IKE Main Mode or IKE Aggressive Mode. 9 At the Pre-shared Key text box, enter the password for the connection. This must be unique for each connection rule that you create. 10 Enter the Key lifetime, in seconds. The default is 3600 seconds.
VPN 69 Figure 46 VPN Tunnel Configuration - L2TP over IPSec Screen 3 Enter a name for the tunnel at the Tunnel Name text box. 4 Enter the user name that the remote VPN client will use to connect in the User name text box. 5 Enter the password that will need to be supplied to connect in the Password text box. 6 Type in an Idle Timeout. This is the amount of time, in minutes, that you want the connection to remain inactive before it times out. Enter 0 if you do not want the connection to timeout.
CHAPTER 5: ROUTER CONFIGURATION 11 Type a name for the Remote Party ID in the text box next to the drop-down list. This must be unique for each connection rule that you create. 12 Click Apply to save the settings. Adding a PPTP Connection To add a PPTP Connection, or to edit an existing PPTP connection: 1 In the VPN screen, click Add, or click Edit to edit an existing connection. 2 At the Tunnel Type drop-down list, select PPTP. The screen shown in Figure 47 displays.
SNMP ■ Select either Network or Host as the local type setting. ■ Enter the Remote Server IP address in the text box. 71 8 If you want to enter details of the remote network, check the Remote Network Setting - Enable check box, then enter the Remote Network Address and Remote Subnet Mask. 9 Click Apply to save the settings. SNMP SNMP (Simple Network Management Protocol) allows remote management of your Router by a PC that has an SNMP management agent installed.
CHAPTER 5: ROUTER CONFIGURATION 3 In the Community column, enter the name of the SNMP communication channel. Your SNMP management agent needs to be configured with this name so that it can communicate with your Router. 4 In the Access column, select either: ■ Read to allow the management agent to collect data (for example, bandwidth usage) from your Router. Or, ■ Write to allow the management agent to change the configuration of your Router. 5 Check the Valid check box to enable the community.
System Tools 73 Refer to the following sections for details on each of these options. Restart Router Sometimes it may be necessary to restart or reboot the Router. Restarting or rebooting the Router will not delete any of your configuration settings. To restart the Router: 1 Select System Tools from the main menu, then select Restart from the sub-menu. The Restart Router screen displays (Figure 49). Figure 49 Restart Router Screen 2 Click Restart to restart Router.
CHAPTER 5: ROUTER CONFIGURATION To restore the factory default settings: 1 Select System Tools from the main menu, then select Reset to Factory Defaults from the sub-menu. The Reset to Factory Defaults screen displays (Figure 50). Figure 50 Reset to Factory Defaults Screen 2 Click Reset. Backup/Restore Settings You can save your current configuration using this feature. Saving your configuration will allow you to restore it later if your settings are lost or changed.
System Tools 75 Saving a configuration file To save a configuration file: 1 Select System Tools from the main menu, then select Backup/Restore Settings from the sub-menu. The Backup/Restore Settings screen displays (Figure 51). Figure 51 Backup/Restore Settings Screen 2 Click Save to save your current configuration settings. Restoring a configuration file To restore a previously saved configuration file: 1 Select System Tools from the main menu, then select Backup/Restore Settings from the sub-menu.
CHAPTER 5: ROUTER CONFIGURATION To upload a firmware file from your PC to your Router: 1 Select System Tools from the main menu, then select Upgrade from the sub-menu. The Upgrade screen displays (Figure 52). Figure 52 Upgrade Screen 2 Click Browse to display the list of currently saved firmware upgrade files. The file you select displays in the text box. 3 Click Upgrade to upload this firmware file to your Router. Admin Password The Router ships with a default password of admin.
System Tools 77 To change the password: 1 Select System Tools from the main menu, then select Admin Password from the sub-menu. The Admin Password screen displays (Figure 53). Figure 53 Admin Password Screen 2 Enter the current password into the Current password text box. 3 Enter the new password into the New Password and Confirm New Password fields. 4 Type in a Login Timeout. This is the amount of time you want the Router to remain inactive before it returns to the login screen.
CHAPTER 5: ROUTER CONFIGURATION To configure time zone settings: 1 Select System Tools from the main menu, then select Time Zone from the sub-menu. The Time Zone screen displays (Figure 54). Figure 54 Time Zone Screen 2 Select the Base Date and Base Time. The Router will use these settings if it is unable to connect to the Internet or SNTP Server. 3 To enable SNTP, check the Using Time Server (NTP) check box. 4 Select a time zone from the Set Time Zone drop down list.
Advanced Advanced 79 From the Advanced Screen, you can configure: ■ NAT (Network Address Translation) and IPSec NAT-T (NAT Traversal) Pass-through ■ Universal Plug and Play ■ WAN Ping Blocking ■ Remote Administration The sub-menu topics in the Advanced menu also enable you to configure Routing options, and to configure Dynamic DNS. NAT ■ NAT — Before you disable this function, make sure you have changed the administrator password.
CHAPTER 5: ROUTER CONFIGURATION To configure NAT, and IPSec NAT-T Pass-through: 1 Select Advanced from the main menu. The Advanced screen displays (Figure 55). Figure 55 Advanced 2 To disable NAT, select the OFF radio button. 3Com recommends that you leave NAT enabled for maximum security. 3 To enable IPSec NAT-T Pass-through, select the On radio button. 4 If required, continue configuring advanced options on this screen, or click Apply to save the settings.
Advanced 81 want to use any applications that are Universal Plug and Play compliant, you can enable this feature. To enable Universal Plug and Play: 1 Select Advanced from the main menu. The Advanced screen displays (Figure 55). 2 To enable Universal Plug and Play, select the ON radio button. 3 If required, continue configuring advanced options on this screen, or click Apply to save the settings. WAN Ping Blocking Computer hackers use what is known as "Pinging" to find potential victims on the Internet.
CHAPTER 5: ROUTER CONFIGURATION ■ Check the Any IP address can remotely manage the router check box if you want any PC to be able to remotely manage the Router. Or, ■ Enter the IP address of the PC that you want to remotely manage the Router in the Only this IP address can remotely manage the router check box 3 Enter the number of the port that will be used to remotely manage the Router in the Port for remotely manage the router text box.
Advanced 83 ■ Subnet Mask - the subnet mask of the route. If network address and subnet mask are both set to 0.0.0.0, this is the default route. ■ Gateway - the gateway used to route data to the network specified by the network address. To configure a static route: 1 Click on Add to add a new route, or click Edit in the Configure column to edit an existing entry. The Add/Edit Static Route screen displays (Figure 57). You can delete an existing entry by clicking on delete in the Configure column.
CHAPTER 5: ROUTER CONFIGURATION Figure 58 RIP screen To set up RIP and auto summary, and to set up or change information for the LAN interface, the WAN interface or both: 1 Check the RIP Mode - Enable check box to configure RIP on the Router. 2 Check the Auto Summary - Enable check box if you want the Router to send simplified routing data to other RIP devices, instead of full routing data. 3 Select one of Disable, Enable or Silent from the Operation Mode drop-down list.
Advanced 85 8 Click Apply to save the settings. Routing Table Select the Routing Table tab from the Advanced > Routing sub-menu to display routing information used by the Router.
CHAPTER 5: ROUTER CONFIGURATION DDNS Dynamic Domain Name Server (DDNS) enables you to map a static domain name to a dynamic IP address. The Router supports two DDNS providers, TZO.com and DYNDNS. Before you can set up DDNS, you must obtain an account, password and static domain name from your DDNS provider. DDNS is disabled by default. To set up DDNS: 1 Select Advanced from the main menu, then select DDNS from the sub-menu. The DDNS screen displays (Figure 60).
Status and Logs 87 DynDNS If you select DYNDNS: 1 In the Domain Name text box, enter the domain name. 2 In the Account text box, enter the account name. 3 In the Password text box, enter the account password. 4 Click Apply to make this service active. Status and Logs Status Selecting Status and Logs from the main menu displays the Status Screen, and also displays two sub-menus: Traffic Metering and Logs.
CHAPTER 5: ROUTER CONFIGURATION Traffic Metering The Traffic Metering screen displays the amount of data transmitted to and received from the Internet. This information is provided for guidance only, and may differ from that used by your ISP for billing purposes. To view the Traffic Metering screen: 1 Select Status and Logs from the main menu, then select the Traffic Metering sub-menu.
Support/Feedback 89 To display log information: 1 Select Status and Logs from the main menu, then select Logs from the sub-menu. The Logs screen displays (Figure 63): Figure 63 Logs Screen 2 Either: Support/Feedback Support ■ Click Refresh to update the display. Or, ■ Click Clear to clear the log (note that all current entries will be erased). Or, ■ Click Save to save the log to disk in a text file.
CHAPTER 5: ROUTER CONFIGURATION Figure 64 Support Screen Feedback Selecting the Feedback option on the sub-menu displays the Feedback screen and allows you to provide feedback to 3Com on the operation of your Router (Figure 65). This screen should not be used to obtain technical support.
6 Basic Connection Checks Browsing to the Router Configuration Screens TROUBLESHOOTING ■ Check that the Router is connected to your computers and to the telephone line, and that all the equipment is powered on. Check that the LAN Status LED and Cable/DSL Status LED on the Router are illuminated, and that any corresponding LEDs on the NIC are also illuminated. ■ Ensure that the computers have completed their start-up procedure and are ready for use.
CHAPTER 6: TROUBLESHOOTING Connections tab and click on the LAN Settings button at the bottom. Make sure that the Proxy Server option is unchecked. ■ If you cannot browse to the Router, use the winipcfg utility in Windows 95/98/ME to verify that your computer has received the correct address information from the Router. From the Start menu, choose Run and then enter winipcfg. Check that the computer has an IP address of the form 192.168.1.xxx (where xxx is in the range 2-254), the subnet mask is 255.
Forgotten Password and Reset to Factory Defaults Forgotten Password and Reset to Factory Defaults 93 If you can browse to the Router configuration screen but cannot log in because you do not know or have forgotten the password, follow the steps below to reset the Router to it’s factory default configuration. CAUTION: All your configuration changes will be lost, and you will need to run the configuration wizard again before you can re-establish your Router connection to the Internet.
CHAPTER 6: TROUBLESHOOTING the Router software on the accompanying CD-ROM or 3Com web site (http://www.3com.com) and upload it to the Router to see if this clears the fault (refer to “Recovering from Corrupted Software” below). If this does not fix the problem, contact your supplier for further advice. Power LED or Power Adapter OK LED Not Lit ■ During normal operation, you may notice the Alert LED lighting briefly from time to time.
Recovering from Corrupted Software 95 Table 3 Power Adapter Part Numbers Recovering from Corrupted Software Part Number Region 3C16760 US and Canada 3C16761 UK 3C16762 Europe and Middle East 3C16763 Australasia (except Japan and Korea) 3C16764 South Africa 3C16766 Japan 3C16767 Korea 3C16768 Argentina If the system software has become corrupted, the Router will enter a “recovery” state; DHCP is enabled, and the LAN IP address is set to 192.168.1.1.
CHAPTER 6: TROUBLESHOOTING 7 Refer to the Installation Guide to reconnect your Router to the computers in your network. Do not forget to reconfigure the computer you used for the software upload. If the Router does not resume normal operation following the upload, it may be faulty. Contact your supplier for advice. Frequently Asked Questions How do I reset the Router to Factory Defaults? Either: ■ If you can log in, refer to “Reset to Factory Defaults” on page 73.
Frequently Asked Questions 97 After you have downloaded the software from the 3Com Web site, you can upgrade your Router as described in “Upgrade” on page 75.
CHAPTER 6: TROUBLESHOOTING
A IP ADDRESSING The Internet Protocol Suite The Internet protocol suite consists of a well-defined set of communications protocols and several standard application protocols. Transmission Control Protocol/Internet Protocol (TCP/IP) is probably the most widely known and is a combination of two of the protocols (IP and TCP) working together.
APPENDIX A: IP ADDRESSING For your network to work correctly, all devices on the network must have: ■ The same sub-network address. ■ The same subnet mask. The only value that will be different is the specific host device number. This value must always be unique. An example IP address is ‘192.168.100.8’. However, the size of the network determines the structure of this IP Address. In using the Router, you will probably only encounter two types of IP Address and subnet mask structures.
How does a Device Obtain an IP Address and Subnet Mask? 101 This type of IP Address operates on a subnet mask of ‘255.255.0.0’. See Table 5 for an example about how a network (only four computers represented) and a Router might be configured. Table 5 IP Addressing and Subnet Masking How does a Device Obtain an IP Address and Subnet Mask? DHCP Addressing Device IP Address Subnet Mask PC 1 192.168.100.8 255.255.0.0 PC 2 192.168.201.30 255.255.0.0 PC 3 192.168.113.155 255.255.0.0 PC 4 192.
APPENDIX A: IP ADDRESSING an IP address at random from the industry standard subnet of 169.254.x.x (with a subnet mask of 255.255.0.0). If two devices allocate themselves the same address, the conflict is detected and one of the devices allocates itself a new address. Automatic IP addressing support was introduced by Microsoft in the Windows 98 operating system and is also supported in Windows 2000.
B Information Regarding Popular ISPs ISP INFORMATION WAN Types Characteristics Popular ISPs Dynamic IP Cable modem ISP, non-hostname based. Need to clone the MAC address in the Advanced tab of the Internet Settings page. MediaOne, RoadRunner, Optimum Online, Time Warner, Charter, Adelphia, Metrocast. (Clone MAC) Dynamic IP (Hostname) PPPoE (DSL) PPTP Cable ISP, Requires Hostname to @Home Network, Cogoco, authenticate ie. cx213818-B.
APPENDIX B: ISP INFORMATION Static (DSL) Static (Cable) DSL Modem, always on. Need to enter ALL IP information from ISP in the Static IP address section of the Internet Settings page.
C TECHNICAL SPECIFICATIONS This section lists the technical specifications for the OfficeConnect Cable/DSL Router. OfficeConnect Cable/DSL Router Interfaces Cable/DSL modem connection — 10 Mbps/100 Mbps dual speed Ethernet port (10BASE-T/100BASE-TX) LAN connection — four 10Mbps/100Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX) Operating Temperature 0 °C to 40 °C (32 °F to 105 °F) Power 7VA, 23.9 BThU/hr Humidity 0 % to 90 % (non-condensing) humidity Dimensions ■ Width = 220 mm (8.7 in.
APPENDIX C: TECHNICAL SPECIFICATIONS Safety: UL60950 EN 60950 CSA 22.2 #60950 IEC 60950 EMC: EN 55022 Class B EN 55024 CISPR 22 FCC Part 15 Class B* ICES-003 Class B CNS 13438 Class A ETSI EN 301 489–17 Environmental: EN 60068 (IEC 68) *See “Regulatory Notices” on page 129 for conditions of operation. System Requirements Operating Systems The Router will support the following Operating Systems: Ethernet Performance Cable Specifications ■ Windows 95/98 ■ Windows NT 4.
D SAFETY INFORMATION Important Safety Information WARNING: Warnings contain directions that you must follow for your personal safety. Follow all directions carefully. You must read the following safety information carefully before you install or remove the unit: WARNING: Exceptional care must be taken during installation and removal of the unit. WARNING: To ensure compliance with international safety standards, only use the power adapter that is supplied with the unit.
APPENDIX D: SAFETY INFORMATION Wichtige Sicherheitshinweise VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu befolgen. Sie müssen die folgenden Sicherheitsinformationen sorgfältig durchlesen, bevor Sie das Geräts installieren oder ausbauen: VORSICHT: Bei der Installation und beim Ausbau des Geräts ist mit höchster Vorsicht vorzugehen.
Consignes importantes de sécurité AVERTISSEMENT: Les avertissements présentent des consignes que vous devez respecter pour garantir votre sécurité personnelle. Vous devez respecter attentivement toutes les consignes. Nous vous demandons de lire attentivement les consignes suivantes de sécurité avant d’installer ou de retirer l’appareil: AVERTISSEMENT: Faites très attention lors de l'installation et de la dépose du groupe.
APPENDIX D: SAFETY INFORMATION Información de seguridad importante ADVERTENCIA: Las advertencias contienen indicaciones que debe respetar por su seguridad personal. Siga las indicaciones con cuidado. Antes de instalar o retirar la unidad, debe leer detenidamente la siguiente información de seguridad. ADVERTENCIA: Debe tener especial cuidado durante la instalación y retirada de la unidad.
E OBTAINING SUPPORT FOR YOUR PRODUCT Register Your Product to Gain Service Benefits To take advantage of warranty and other service benefits, you must first register your product at http://eSupport.3com.com/. 3Com eSupport services are based on accounts that you create or have authorization to access. First time users must apply for a user name and password that provides access to a number of eSupport features including Product Registration, Repair Services, and Service Request.
APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT http://www.3com.com/prodforms/software/connection_assistan t/ca_thankyou.html Access Software Downloads Software Updates are the bug fix / maintenance releases for the version of software initially purchased with the product. In order to access these Software Updates you must first register your product on the 3Com web site at http://eSupport.3com.com/. First time users will need to apply for a user name and password.
Telephone Technical Support and Repair 113 be returned to the sender unopened, at the sender’s expense. If your product is registered and under warranty, you can obtain an RMA number online at http://eSupport.3com.com/. First time users will need to apply for a user name and password. Telephone numbers are correct at the time of publication. Find a current directory of support telephone numbers posted on the 3Com web site at http://csoweb4.3com.
APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT Country Telephone Number Country Telephone Number Latin America Telephone Technical Support and Repair Antigua Argentina Aruba Bahamas Barbados Belize Bermuda Bonaire Brazil Cayman Chile Colombia Costa Rica Curacao Ecuador Dominican Republic 1 800 988 2112 0 810 444 3COM 1 800 998 2112 1 800 998 2112 1 800 998 2112 52 5 201 0010 1 800 998 2112 1 800 998 2112 0800 13 3COM 1 800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112 AT&T +800 998 2112 1 800 99
F END USER SOFTWARE LICENSE AGREEMENT IMPORTANT: READ BEFORE INSTALLING THE SOFTWARE 3Com END USER SOFTWARE LICENSE AGREEMENT YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE DOWNLOADING, INSTALLING AND USING THIS PRODUCT, THE USE OF WHICH IS LICENSED BY 3COM CORPORATION (“3COM”) TO ITS CUSTOMERS FOR THEIR USE ONLY AS SET FORTH BELOW. DOWNLOADING, INSTALLING OR OTHERWISE USING ANY PART OF THE SOFTWARE OR DOCUMENTATION INDICATES THAT YOU ACCEPT THESE TERMS AND CONDITIONS.
APPENDIX F: END USER SOFTWARE LICENSE AGREEMENT 3Com and its suppliers. You agree to hold such trade secrets in confidence. You further acknowledge and agree that ownership of, and title to, the Software and Documentation and all subsequent copies thereof regardless of the form or media are held by 3Com and its suppliers. UNITED STATES GOVERNMENT LEGENDS: The Software, Documentation and any other technical data provided hereunder is commercial in nature and developed solely at private expense.
GLOSSARY 10BASE-T The IEEE specification for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. 100BASE-TX The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted-pair cable. Access Point An Access Point is a device through which wireless clients connect to other wireless clients and which acts as a bridge between wireless clients and a wired network, such as Ethernet.
GLOSSARY Category 5 Cables One of five grades of Twisted Pair (TP) cabling defined by the EIA/TIA-586 standard. Category 5 can be used in Ethernet (10BASE-T) and Fast Ethernet networks (100BASE-TX) and can transmit data up to speeds of 100 Mbps. Category 5 cabling is better to use for network cabling than Category 3, because it supports both Ethernet (10 Mbps) and Fast Ethernet (100 Mbps) speeds. Client The term used to described the desktop PC that is connected to your network.
GLOSSARY Ethernet Ethernet Address Fast Ethernet 119 A LAN specification developed jointly by Xerox, Intel and Digital Equipment Corporation. Ethernet networks use CSMA/CD to transmit packets at a rate of 10 Mbps over a variety of cables. See MAC address. An Ethernet system that is designed to operate at 100 Mbps. Firewall Electronic protection that prevents anyone outside of your network from seeing your files or damaging your computers.
GLOSSARY consists of 32 bits divided into two or three fields: a network number and a host number or a network number, a subnet number, and a host number. IP Address Internet Protocol Address. A unique identifier for a device attached to a network using TCP/IP. The address is written as four octets separated with periods (full-stops), and is made up of a network section, an optional subnet section and a host section. ISP Internet Service Provider.
GLOSSARY Network Interface Card (NIC) Protocol 121 A circuit board installed into a piece of computing equipment, for example, a computer, that enables you to connect it to the network. A NIC is also known as an adapter or adapter card. A set of rules for communication between devices on a network. The rules dictate format, timing, sequencing and error control. PPPoE Point-to-Point Protocol over Ethernet.
GLOSSARY Subnet mask Subnets A subnet mask, which may be a part of the TCP/IP information provided by your ISP, is a set of four numbers configured like an IP address. It is used to create IP address numbers used only within a particular network (as opposed to valid IP address numbers recognized by the Internet, which must assigned by InterNIC). A network that is a component of a larger network.
GLOSSARY 123 WAN Wide Area Network. A network that connects computers located in geographically separate areas (for example, different buildings, cities, or countries). The Internet is an example of a wide area network. WEP Wired Equivalent Privacy. A shared key encryption mechanism for wireless networking. Encryption strength is 40/64 bit or 128 bit. Wizard A Windows application that automates a procedure such as installation or configuration.
GLOSSARY
INDEX INDEX A access control 57 Addresses IP 99 admin password resetting 76 administration remote 81 Advanced RIP 83 routing table 85 Automatic Addressing 101 B backup settings 74 C Cable Specifications 106 client IP filters 57 access control 57 schedule rule 60 URL filter 59 Connection Policy 53 Conventions notice icons, About This Guide 8 text, About This Guide 8 D DDNS 86 DHCP 37, 101 DHCP Server 23 DMZ 63 DNS 22, 49 DoS attacks 51 DOS detect criteria configuring 54 Dynamic IP Address 30, 42 F fact
INDEX P U ping blocking 81 plug and play 80 PPPoE 24, 31, 42 PPTP 43 universal plug and play 80 upgrade 75 URL filter 59 R remote administration 81 Reset to Factory Defaults 93 reset to factory defaults 73 restart router 73 restore settings 74 RIP 83 routing 82 RIP 83 routing table 85 static route 82 routing table 85 S Safety Information 17 schedule rule 60 Setup Wizard 25 SNMP 71 special applications 54 Specifications technical 105 SPI 51 Static Addressing 101 Static IP Address 43 static route 8
REGULATORY NOTICES FCC 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, and the Canadian Department of Communications Equipment Standards entitled, “Digital Apparatus,” ICES-003. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
3Com Corporation, Corporate Headquarters, Copyright © 2004 3Com Corporation. All rights reserved. 350 Campus Drive, Marlborough, MA USA 01752-3064 3Com and are registered trademarks of 3Com To learn more about 3Com products and services, Corporation. All other company and product names may be trademarks of their respective companies. visit our World Wide Web site at www.3com.com All specifications are subject to change without notice. DUA8589-1AAA01 Rev.
