OfficeConnect ADSL Wireless 11g Firewall Router User Guide 3CRWE754G72-A 3CRWE754G72-B WL-540A WL-540B http://www.3com.com/ Part No. DUA-0075-4AAA01 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 ADSL Wireless11g Firewall Router Router Advantages 13 Package Contents 13 Minimum System and Component Requirements Front Panel 14 Rear Panel 15 2 HARDWARE INSTALLATION Introduction 17 Safety Information 17 Positioning the Router 17 Using the Rubber Feet 18 Powering Up the Router 18 Connecting the Router 18 3 SETTING UP YOUR COMPUTERS Obtaining an
RUNNING THE SETUP WIZARD Accessing the Wizard 29 DSL Settings 29 Summary 33 5 27 ROUTER CONFIGURATION Navigating Through the Router Configuration Pages Main Menu 35 Status Screen 35 Status 36 LAN Setup 36 LAN Settings 37 DHCP Clients List 38 Wireless 39 Configuring Wireless 39 Encryption 40 Disabled 41 WPA-PSK (no server) 41 128-bit WEP 42 64-bit WEP 42 WPA (with RADIUS Server) 43 Internet Settings 44 Connection Type 44 PPPoE 45 PPPoA 46 Bridged Mode for Single PC 47 Routing Mode over ATM 47 DNS 48 Ro
Access Control 54 URL Blocking 56 Schedule Rule 57 MAC Address Filtering 59 DMZ 60 Advanced 60 SNMP 63 SNMP Community 63 SNMP Trap 64 System Tools 65 Restart Router 65 Reset to Factory Default 65 Backup/Restore Settings 66 Upgrade 66 Admin Password 67 Time and Time Zone 68 Status and Logs 69 ADSL Status 69 Logs 69 6 TROUBLESHOOTING Basic Connection Checks 71 Browsing to the Router Configuration Screens 71 Connecting to the Internet 72 Forgotten Password and Reset to Factory Defaults 72 Wireless Networking
B TECHNICAL SPECIFICATIONS OfficeConnect ADSL Wireless 11g Firewall Router Standards 82 81 C SAFETY INFORMATION D END USER SOFTWARE LICENSE AGREEMENT D OBTAINING SUPPORT FOR YOUR PRODUCT Register Your Product to Gain Service Benefits Purchase Value-Added Services 91 Troubleshoot Online 91 Access Software Downloads 92 Contact Us 92 Telephone Technical Support and Repair 92 91 GLOSSARY INDEX REGULATORY NOTICES FOR THE OFFICECONNECT ADSL WIRELESS 11G FIREWALL ROUTER
ABOUT THIS GUIDE This guide describes how to install and configure the OfficeConnect ADSL Wireless 11g Firewall Router (3CRWE754G72-A/B). 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.
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 ADSL Wireless 11g Firewall Router User Guide ■ Part Number DUA0075-4AAA01 ■ Page 24 Do not use this e-mail address for technical support questions. For information about contacting Technical Support, please refer to the Support and Safety Information sheet. 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.
CHAPTER 1: INTRODUCING THE ROUTER Figure 1 Example Network Without a Gateway 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 both wired and wireless computers ■ High speed 802.
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. ■ An 802.11b or 802.
Rear Panel 15 If this LED illuminates successful Username/Password has been authenticated with your ISP. 4 Wireless LAN (WLAN) Status LED Green If the LED is on it indicates that wireless networking is enabled. If the LED is flashing, the link is OK and data is being transmitted or received. If the LED is off, the Wireless LAN has been disabled in the Router, or there is a problem. Refer to Chapter 6 “Troubleshooting”.
CHAPTER 1: INTRODUCING THE ROUTER example, a hub or a switch). These ports have an automatic MDI/MDIX feature, which means either straight-through or a crossover cable can be used. 8 Reset Button If you want to reset your Router to factory default settings, and cannot access the web management interface (for example, due to a lost password), then you may use this button. Refer to “Forgotten Password and Reset to Factory Defaults” on page 72 for further details.
2 Introduction HARDWARE INSTALLATION This chapter will guide you through a basic installation of the Router, including: ■ Connecting the Router to the Internet. ■ Connecting the Router to your network. ■ Setting up your computers for networking with the Router. Safety Information WARNING: Please read the “Safety Information” section in Appendix C before you start. VORSICHT: Bitte lesen Sie den Abschnitt “Wichtige Sicherheitshinweise” sorgfältig durch, bevor Sie das Gerät einschalten.
CHAPTER 2: HARDWARE INSTALLATION When positioning your Router, ensure: Using the Rubber Feet Powering Up the Router ■ It is out of direct sunlight and away from sources of heat. ■ Cabling is away from power lines, fluorescent lighting fixtures, and sources of electrical noise such as radios, transmitters and broadband amplifiers. ■ 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.
Connecting the Router 19 Figure 5 Connecting the Gateway Power Supply Unit net Inter ADSL 11g Wireless Router Wireless Users Your PC 3 Run the provided telephone cable from the wall jack providing ADSL service to the ADSL port on your ADSL Router. When inserting an ADSL RJ-11 plug, be sure the tab on the plug clicks into position to ensure that it is properly seated. If you are using splitterless ADSL service, add low-pass filters between the ADSL wall jack and your telephones.
CHAPTER 2: HARDWARE INSTALLATION Figure 6 Installing with a splitter or If you are using a splitterless (G.lite) connection, then your service provider will attach the outside ADSL line directly to your phone system.
Connecting the Router 21 Figure 7 Installing without a splitter You have now completed the hardware installation of your Router. Next you need to set up your computers so that they can make use of the Router to communicate with the Internet. 3Com recommends that you perform the initial Router configuration from a computer that is directly connected to one of the LAN ports.
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 8 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 9. Click OK. Figure 9 Internet Protocol (TCP/IP) Properties Screen 7 Restart your computer.
Obtaining an IP Address Automatically 25 Windows XP 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. 6 Ensure that the options Obtain an IP Address automatically, and Obtain DNS servers automatically are both selected. Click OK.
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 10 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 4.7 or higher, Internet Explorer 5.0 or higher, or Mozilla 1.2.1 or higher). To use the Setup Wizard: 1 Ensure that you have at least one computer connected to the Gateway. Refer to Chapter 2 for details on how to do this. 2 Launch your Web browser on the computer.
CHAPTER 4: RUNNING THE SETUP WIZARD Figure 12 Router Login Screen 5 When you have logged in either: ■ The Status screen will appear (Figure 13). Select Wizard from the menu. or ■ If your Router has not been configured before, the Wizard will launch automatically (refer to Figure 14). 6 You will be guided step by step through a basic setup procedure.
Accessing the Wizard Figure 13 Status Screen DSL Settings Figure 14 DSL Settings Screen 29
CHAPTER 4: RUNNING THE SETUP WIZARD The DSL Mode window allows you to set up the Router for the type of Internet connection you have. Before setting up your DSL connection mode, have your account information from your ISP ready. Select a DSL mode from the following: ■ PPPoE see page 30 ■ PPPoA see page 31 ■ RFC1483 Bridged see page 32 ■ RFC1483 Routed see page 31 and click Next. For further information on selecting a mode see “Internet Settings” on page 44.
Accessing the Wizard 31 3 Re-type your PPP over Ethernet password in the Retype Password text box. 4 Enter your VPI and VCI information in the VPI/VCI text boxes. 5 Check all of your settings, and then click Next. PPPoA Mode Figure 16 PPPoA Screen To setup the router for use with a PPP over ATM (PPPoA) connection, use the following procedure: 1 Enter your PPP over ATM user name in the Username text box. 2 Enter your PPP over ATM password in the Password text box.
CHAPTER 4: RUNNING THE SETUP WIZARD Figure 17 RFC1483 Routed Configuration Screen 1 Enter your Internet IP address in the WAN IP text box. 2 Enter the subnet mask in the Subnet Mask text box. 3 Enter your VPI and VCI information in the VPI/VCI text boxes. 4 Enter the default gateway in the Default Gateway text box. Check all of your settings, and then click Next.
Accessing the Wizard Figure 18 RFC1483 Bridged Configuration Screen 5 Enter your VPI and VCI information in the VPI/VCI text boxes. Check all of your settings, and then click Next.
CHAPTER 4: RUNNING THE SETUP WIZARD When you complete the Setup Wizard, a configuration summary will display. 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. Your Router is now configured and ready for use. See Chapter 5 for a detailed description of the Router configuration screens.
5 ROUTER CONFIGURATION Navigating Through the Router Configuration Pages Main Menu Status Screen This chapter describes all the screens available through the Router configuration pages, and is provided as a reference. 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 Status Figure 20 Status Screen There are two buttons on this screen - Connect and Disconnect. These buttons allow you to manually connect or disconnect your router from your ISP’s service. LAN Setup 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 any application. If you need to make changes to the settings, you can do so.
LAN Setup 37 The Router will also provide you with a list of all client computers connected to the network. To view the list, click DHCP clients list. LAN Settings Figure 21 LAN Settings Screen The LAN Settings screen is used to specify the LAN IP address of your Router, and to configure the DHCP server. 1 Select LAN Settings and then specify the Router IP Address and Subnet Mask in the appropriate fields. The default IP address of the Gateway is 192.168.1.1.
CHAPTER 5: ROUTER CONFIGURATION DHCP Clients List Figure 22 DHCP Clients List Screen 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.
Wireless Wireless 39 From these pages you can configure the settings for wireless connections. Figure 23 Wireless Settings Screen This screen allows you to enable or disable the wireless section of your LAN. When disabled, no wireless PCs can gain access to either the Internet or other PCs on your Wired or Wireless LAN through this Router. Select the required setting, and press Apply.
CHAPTER 5: ROUTER CONFIGURATION Your Router is capable of blocking this "random" searching for a network. If you disable the "Broadcast SSID" feature, the only way a computer can join the network is by setting the computer's SSID to the specific name of the network (like WLAN). Be sure that you know your SSID (network name) before enabling this feature. It is possible to make your wireless network nearly invisible. By turning off the broadcast of the SSID, your network will not appear in a site survey.
Wireless ■ 64-bit WEP (see page 42) ■ WPA (with RADIUS Server) (see page 43) 41 Select the required value from the drop down list, and press Apply. Disabled WPA-PSK (no server) In this mode, wireless transmissions will not be encrypted, and will be visible to everyone. However, when setting up or debugging wireless networks it is often useful to use this security mode.
CHAPTER 5: ROUTER CONFIGURATION 128-bit WEP Figure 27 128-bit WEP Screen WEP is the basic mechanism to transmit your data securely over the wireless network. Matching encryption keys must be setup on your Router and wireless client devices to use WEP. 1 You can either enter your WEP key as 13 pairs of hex digits (0-9, A-F), or enter a memorable passphrase in the Passphrase box, and then click Generate to generate the hex keys from the passphrase.
Wireless 43 WEP is the basic mechanism to transmit your data securely over the wireless network. Matching encryption keys must be setup on your Router and wireless client devices to use WEP. 1 You can either enter your WEP key as 5 pairs of hex digits (0-9, A-F), or enter a memorable passphrase in the Passphrase box, and then click Generate to generate the hex keys from the passphrase. For 64-bit WEP, you can enter up to four keys, in the fields Key 1 to Key 4.
CHAPTER 5: ROUTER CONFIGURATION 3 Enter the key for the RADIUS server in the RADIUS Key field. 4 By default, the WPA keys are changed every hour, but if you wish to change this you can do so by specifying the required time in the Re-key Interval field, in minutes 5 Click Apply. Internet Settings Connection Type From these pages you can configure the settings for your DSL connection.
Internet Settings PPPoE 45 Figure 31 PPPoE Settings Screen 1 Enter the User Name assigned to you by your ISP in the User Name field. 2 Enter the Password assigned to you by your ISP in the Password field. Re-enter your password in the Retype Password field. 3 If your ISP assigns your IP address dynamically, then select Yes in the IP assigned by ISP field and proceed to step 4. If your ISP has assigned you a fixed or static IP address, select No in the IP assigned by ISP field.
CHAPTER 5: ROUTER CONFIGURATION 8 Click Apply. PPPoA Figure 32 PPPoA Settings Screen 1 Enter the User Name assigned to you by your ISP in the User Name field. 2 Enter the Password assigned to you by your ISP in the Password field. Re-enter your password in the Retype Password field. 3 If your ISP assigns your IP address dynamically then select Yes in the IP assigned by ISP field and proceed to step 4.
Internet Settings 47 Enter a value of 0 to disable this timeout. 8 Click Apply. Bridged Mode for Single PC Figure 33 Bridge Mode for Single PC Screen 1 Enter the VPI and VCI parameters provided to you by your ISP in the VPI and VCI fields. 2 Select the encapsulation type (LLC or VC MUX) in the Encapsulation Type field. This information will have been provided to you by your ISP. 3 Click Apply.
CHAPTER 5: ROUTER CONFIGURATION 3 Select the encapsulation type (LLC or VC MUX) in the Encapsulation field. This information will have been provided to you by your ISP. 4 Click Apply. DNS Figure 35 DNS Screen If your ISP provided you with specific DNS addresses to us, enter them into the appropriate fields on this screen and click Apply. Many ISP's do not require you to enter this information into the Router.
Routing Static Routes 49 Figure 36 Static Route Parameters Screen The Static Route Parameter screen shows a list of current static route entries. For each entry, the following information is displayed: ■ Index — the index of the entry ■ Network Address — the network address of the route. ■ Subnet Mask — the subnet mask of the route. A network address of 0.0.0.0 and a subnet mask of 0.0.0.0 indicates the default route.
CHAPTER 5: ROUTER CONFIGURATION You can set up RIP independently on both LAN and WAN interfaces. 1 Select the RIP Mode Enable radio button. 2 Select the appropriate radio button to enable or disable Auto Summary. Auto Summarization sends simplified routing data to other RIP-enabled devices rather than full routing data. 3 Select the Operation Mode: ■ Disabled — RIP is not enabled for the WAN or LAN interface. ■ Enabled — RIP is enabled for the WAN or LAN interface.
Firewall 51 Figure 38 Routing Table Screen Firewall From these pages you can configure settings for the firewall. Figure 39 Firewall Screen Your Router is equipped with a firewall that will protect your network from a wide array of common hacker attacks including Ping of Death (PoD) and Denial of Service (DoS) attacks. You can turn the firewall function off if needed.
CHAPTER 5: ROUTER CONFIGURATION Special Applications Figure 40 Special Applications Screen Special Applications let you specify specific ports to be open for specific applications to work properly with the Network Address Translation (NAT) feature of the Router. A list of popular applications has been included to choose from. Select your application from the drop-down list at the top of the screen.
Firewall 53 4 Click Apply. Virtual Servers Figure 41 Virtual Servers Screen 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'.
CHAPTER 5: ROUTER CONFIGURATION Client IP Filters The Router can be configured to restrict access to the Internet, e-mail or other network services at specific days and times. Restriction can be set for a single computer, a range of computers, or multiple computers. Access Control Figure 42 Access Control Screen Access Control allows users to define the traffic type permitted or not-permitted to the Internet. This screen allows you to enable or disable all Access Control rules.
Firewall 55 Figure 43 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. A list of popular services is given on this screen, to block a particular service place a check in the appropriate Blocking checkbox.
CHAPTER 5: ROUTER CONFIGURATION URL Blocking Figure 44 URL Blocking Screen To configure the URL Blocking feature, use the table on the URL Blocking page to specify the websites (www.somesite.com) and/or keywords you want to filter on your network. For example, entering a keyword of “xxx” would block access to any URL that contains the string “xxx”. To complete this configuration, you will need to create or modify an access rule in the "Access Control" section (see “Access Control” on page 54).
Firewall Schedule Rule 57 Figure 45 Schedule Rule Screen The Router can be configured to restrict access to the Internet, e-mail or other network services at specific days and times. These schedule rules are used by the rules defined on the Access Control page (see “Access Control” on page 54). To add a schedule rule: 1 Click Add Rule A screen similar to that shown below will appear.
CHAPTER 5: ROUTER CONFIGURATION Figure 46 Add Schedule Rule Screen 2 Enter a name and comment for the schedule rule in the Name and Comment fields. 3 Specify the schedule rules for the required days and times - note that all times should be in 24 hour format. 4 Click Apply.
Firewall MAC Address Filtering 59 Figure 47 MAC Address Filtering Screen The MAC Address Filter is a powerful security feature that allows you to specify which computers are allowed on the Wireless network. Any wireless computers attempting to access the network that are not specified in the filter list will be denied access. To Enable or Disable this feature, select the appropriate Enable MAC Address Filtering radio button, and click Apply.
CHAPTER 5: ROUTER CONFIGURATION DMZ Figure 48 DMZ Screen If you have a client PC that cannot run an Internet application properly from behind the firewall, you can open the client up to unrestricted two-way Internet access. This may be necessary if the NAT feature is causing problems with an application such as a game or video conferencing application. Use this feature on a temporary basis. The computer in the DMZ is not protected from hacker attacks.
Firewall ■ 61 Remote Admin Figure 49 Advanced Screen NAT Enable Before you enable this function, make sure you have changed the administrator password. Network Address Translation (NAT) is the method by which the router shares the single IP address assigned by your ISP with the computers on your network. This function should only be used by advanced users, and if your ISP assigns you multiple IP addresses or you need NAT disabled for an advanced system configuration.
CHAPTER 5: ROUTER CONFIGURATION Router ships with the Universal Plug and Play feature disabled. If you are using any applications that are Universal Plug and Play compliant, and wish to take advantage of the Universal Plug and Play features, you can enable this feature. Simply select Enable in the UPnP Enabling section of the Utilities page. Click Apply to save the change. WAN Ping Blocking Computer hackers use what is known as "Pinging" to find potential victims on the Internet.
SNMP SNMP SNMP Community 63 SNMP (Simple Network Management Protocol) allows remote management of your router by a PC that has an SNMP management agent installed. Figure 50 SNMP Community Screen To Configure SNMP: 1 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.
CHAPTER 5: ROUTER CONFIGURATION SNMP Trap Figure 51 SNMP Trap Screen You can configure your router to send status messages to the SNMP management agent if a problem occurs on the network. To configure traps: 1 In the IP Address field, enter the IP address of the PC to which you want your router to send status messages. 2 In the Community field, enter the name of the SNMP communication channel to which you want your router to send status messages.
System Tools System Tools Restart Router 65 These pages lets you manage different parameters of the router and perform certain administrative functions. Figure 52 Restart Router Screen Sometimes it may be necessary to Restart or Reboot the Router. Restarting or Rebooting the Router will not delete any of your configuration settings. Click Restart to Restart or Reboot the Router.
CHAPTER 5: ROUTER CONFIGURATION before you restore all of the defaults. To restore the factory default settings, click Reset. Backup/Restore Settings Figure 54 Backup/Restore Settings Screen You can save your current configuration by using this feature. Saving your configuration will allow you to restore it later if your settings are lost or changed. It is recommended that you backup your current configuration before performing a firmware update.
System Tools 67 From time to time 3Com may release new versions of the Routers firmware. Firmware updates contain improvements and fixes to problems that may have existed. Please download the firmware file to your PC first, and then click Browse and select the firmware file. Click Upgrade to upload the firmware to the Router. Admin Password Figure 56 Admin Password Screen The Router ships with a default password of admin. 3Com recommends that you change the password for added security.
CHAPTER 5: ROUTER CONFIGURATION make any more changes. The login timeout option is for security purposes and the default is set to 5 minutes. As a note, only one computer can be logged into the Router's web management interface at one time. Time and Time Zone Figure 57 Time and 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.
Status and Logs Status and Logs 69 You can use the Status pages to view version numbers for your router’s software and hardware and check the status of connections to WAN, LAN and WLAN interfaces. ADSL Status Figure 58 ADSL Status Screen This screen shows modem status and statistics Logs Figure 59 Logs Screen This screen shows any attempts that have been made to gain access to your network as well as the system activities. Click Refresh to update the display.
CHAPTER 5: ROUTER CONFIGURATION Click Clear to clear the log (note that all current entries will be erased). Click Save to save the log to disk in a text file. When prompted for a location to save the file to, specify a filename and location, and then click OK.
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 and DSL LEDs 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 ■ Connecting to the Internet Forgotten Password and Reset to Factory Defaults 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 255.255.255.0, and the default Router is 192.
Wireless Networking 73 4 Press and hold the Reset button on the rear panel (see “Rear Panel” on page 15) for 5 seconds. 5 The Router will restart, and when the start-up sequence has completed, browse to: http://192.168.1.1 and run the configuration wizard. You may need to restart your computer before you attempt this. 6 When the configuration wizard has completed, you may reconnect your network as it was before. Wireless Networking ■ Ensure that you have an 802.11b or 802.
CHAPTER 6: TROUBLESHOOTING Additionally consider moving the wireless computer closer to the Router to confirm that the building structure or fittings are not adversely affecting the connectivity. If this resolves the problem consider relocating the Wireless computer or the Router, or trying a different channel on the Router. Recovering from Corrupted Software ■ Sources of interference: The 2.4Ghz ISM band is used for 802.11b and 802.11g.
Frequently Asked Questions 75 Ensure that one of your computers has a copy of the new software image file stored on its hard disk or available on CD-ROM. The latest software is available on 3Com’s Web site at: www.3com.com 1 Remove power from the Router and disconnect the telephone line and all your computers, except for the one computer with the software image.
CHAPTER 6: TROUBLESHOOTING There are only 4 LAN ports on the Router. How are additional computers connected? You can expand the number of connections available on your LAN by using hubs, switches and wireless access points connected to the Router. 3Com wireless access points and hubs and switches provide a simple, reliable means of expanding your network; contact your supplier for more information, or visit: http://www.3com.
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? 79 This type of IP Address operates on a subnet mask of ‘255.255.0.0’. See Table 4 for an example about how a network (only four computers represented) and a Router might be configured. Table 4 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 4 192.168.
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 TECHNICAL SPECIFICATIONS This section lists the technical specifications for the OfficeConnect ADSL Wireless 11g Firewall Router. OfficeConnect ADSL Wireless 11g Firewall Router Interfaces DSL connection LAN connection — four 10Mbps/100Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX) WLAN Interfaces Standard IEEE 802.11g, Direct Sequence Spread Spectrum (DSSS) Transmission rate: 54Mbps, automatic fallback to 48, 36, 24, 18, 12, or 6 Mbps Maximum channels: 14 Range up to 304.
APPENDIX B: TECHNICAL SPECIFICATIONS Maximum clients: 128 O/P Power 16dBm Operating Temperature 0 °C to 40 °C (32 °F to 105 °F) Power 8VA, 25 BThU/hr Humidity 0 % to 90 % (non-condensing) humidity Dimensions ■ Width = 220 mm (8.7 in.) ■ Depth = 133 mm (5.2 in.) ■ Height = 38 mm (1.5 in.) Weight Approximately 550 g (1.1 lbs) Standards Functional: ISO 8802/3 IEEE 802.3 IEEE 802.11b, 802.
OfficeConnect ADSL Wireless 11g Firewall Router System Requirements 83 Operating Systems The Router will support the following Operating Systems: Ethernet Performance Cable Specifications ■ Windows 95/98 ■ Windows NT 4.0 ■ Windows ME ■ Windows 2000 ■ Windows XP ■ Mac OS 8.5 or higher ■ Unix The Router complies to the IEEE 802.3i, u and x specifications.
APPENDIX B: TECHNICAL SPECIFICATIONS
C 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: The Router generates and uses radio frequency (rf) energy. In some environments, the use of rf energy is not permitted. The user should seek local advice on whether or not rf energy is permitted within the area of intended use.
APPENDIX C: SAFETY INFORMATION WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They cannot be used as telephone sockets. Only connect RJ-45 data connectors to these sockets. Wichtige Sicherheitshinweise VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu befolgen.
VORSICHT: Es sind keine von dem Benutzer zu ersetzende oder zu wartende Teile in dem Gerät vorhanden. Wenn Sie ein Problem mit dem Router haben, das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden kann, setzen Sie sich mit Ihrem Lieferanten in Verbindung. VORSICHT: Vor dem Ausbau des Geräts das Netzadapterkabel herausziehen. VORSICHT: RJ-45-Anschlüsse. Dies sind abgeschirmte RJ-45-Datenbuchsen. Sie können nicht als Telefonanschlußbuchsen verwendet werden.
APPENDIX C: SAFETY INFORMATION conditions ne sont maintenues que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. AVERTISSEMENT: Il n’y a pas de parties remplaceables par les utilisateurs ou entretenues par les utilisateurs à l’intérieur du moyeu. Si vous avez un problème physique avec le moyeu qui ne peut pas être résolu avec les actions de la résolution des problèmes dans ce guide, contacter votre fournisseur.
D END USER SOFTWARE LICENSE AGREEMENT 3Com Corporation 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 D: END USER SOFTWARE LICENSE A GREEMENT and developed solely at private expense. The Software is delivered as "Commercial Computer Software" as defined in DFARS 252.227-7014 (June 1995) or as a commercial item as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in this Agreement, which is 3Com's standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov. 1995) or FAR 52.
D 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 D: 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 93 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 D: 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 1 800 998
GLOSSARY 802.11b The IEEE specification for wireless Ethernet which allows speeds of up to 11 Mbps. The standard provides for 1, 2, 5.5 and 11 Mbps data rates. The rates will switch automatically depending on range and environment. 802.11g The IEEE specification for wireless Ethernet which allows speeds of up to 54 Mbps. The standard provides for 6, 12, 24, 36, 48 and 54 Mbps data rates. The rates will switch automatically depending on range and environment.
GLOSSARY common speed. The order of preference (best first) is: 100BASE-TX full duplex, 100BASE-TX half duplex, 10BASE-T full duplex, and 10BASE-T half duplex. Auto-negotiation is defined in the IEEE 802.3 standard for Ethernet and is an operation that takes place in a few milliseconds. Bandwidth The information capacity, measured in bits per second, that a channel can transmit. The bandwidth of Ethernet is 10 Mbps, the bandwidth of Fast Ethernet is 100 Mbps. The bandwidth for 802.
GLOSSARY 97 host computers and their respective domain names and IP addresses, so that when a domain name is requested (as in typing “3com.com” into your Internet browser), the user is sent to the proper IP address. The DNS server address used by the computers on your home network is the location of the DNS server your ISP has assigned. DSL modem DSL stands for digital subscriber line. A DSL modem uses your existing phone lines to send and receive data at high speeds.
GLOSSARY IEEE Institute of Electrical and Electronics Engineers. This American organization was founded in 1963 and sets standards for computers and communications. IETF Internet Engineering Task Force. An organization responsible for providing engineering solutions for TCP/IP networks. In the network management area, this group is responsible for the development of the SNMP protocol. Infrastructure mode Infrastructure mode is the wireless configuration supported by the Router.
GLOSSARY MAC Address 99 Media Access Control Address. Also called the hardware or physical address. A layer 2 address associated with a particular network device. Most devices that connect to a LAN have a MAC address assigned to them as they are used to identify other devices in a network. MAC addresses are 6 bytes long. NAT Network Address Translation. NAT enables all the computers on your network to share one IP address.
GLOSSARY Server SSID Subnet Address Subnet mask Subnets A computer in a network that is shared by multiple end stations. Servers provide end stations with access to shared network services such as computer files and printer queues. Service Set Identifier. Some vendors of wireless products use SSID interchangeably with ESSID. An extension of the IP addressing scheme that allows a site to use a single IP network address for multiple physical networks.
GLOSSARY 101 URL Filter A URL Filter is a feature of a firewall that allows it to stop its clients form browsing inappropriate Web sites. 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. WECA Wireless Ethernet Compatibility Alliance. An industry group formed to certify cross vendor interoperability and compatibility of 802.11b and 802.
GLOSSARY
INDEX A P Addresses IP 77 Automatic Addressing 79 Password 27 PPPoE 26, 30, 31 C Cable Specifications 83 Channels 105 Conventions notice icons, About This Guide 8 text, About This Guide 8 D DHCP 38, 79 DHCP Server 25 DNS 24 Dynamic IP Address 31 F Forgotten Password 72 I Internet addresses 77 IP Address 37, 77 L LED 14 N Network addresses 77 Networking wireless 73 NIC wireless 14 R Reset to Factory Defaults 72 S Safety Information 17 Setup Wizard 27 Specifications technical 81 Static Addressing
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REGULATORY NOTICES FOR THE OFFICECONNECT ADSL WIRELESS 11G FIREWALL ROUTER Channels Use of the OfficeConnect ADSL Wireless 11g Firewall Router is only authorized for the channels approved by each country. For proper installation, login to the management interface and select your country from the drop down list.
However, there is no guarantee that interference will not occur in a particular installation. Information to the User If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: ■ Reorient the receiving antenna. ■ Relocate the equipment with respect to the receiver. ■ Move the equipment away from the receiver.
■ 15.107 (e)Class B Conducted Limits 15.109 (g)Class B Radiated Emissions Limits Exposure to Radio Frequency Radiation: The radiated output power of the 3Com ADSL 11g Wireless Router is far below the FCC radio frequency exposure limits. Nevertheless, the 3Com OfficeConnect ADSL Wireless 11g Firewall Router shall be used in such manner that the potential for human contact during normal operation is minimized. The distance between the antennas and the user should not be less than 20 cm.
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. DUA0075-4AAA01 Rev.
