3Com 3CRWE554G72 manual

http://www.3com.com/ Part No. DUA0055-4AAA 01 Rev . 01 Published July 2003 Of ficeConnect ® W ir eless 11g Cable/DSL Gateway User Guide 3CRWE554G72[...]

3Com Corporati on 5500 Bayfront Plaza Santa Clara, California 95052-8145 Copyright © 2 003, 3Com Corporation. Al l rights r eserved . No part of this documen tation may be repr oduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without writt en permission fr om 3Com Corporati[...]

C ONTENTS A BOUT T HIS G UIDE Naming Convention 7 Conventions 8 Feedback about this User Gui de 8 Related Documenta tion 9 Produc t Registration 9 1 I NTRO DUCING THE G ATEWAY OfficeConnect Wireless 11g Cable/DSL Gateway 11 Gateway Advantages 13 Package Contents 13 Minimum System and Co mponen t Requirements 14 Front Panel 14 Rear Panel 16 2 H ARDW[...]

Macintosh 27 Disabling PPPoE and PPTP Client Softwar e 28 Disabling W eb Proxy 28 4 R UNNING THE S ETUP W IZARD Accessing the Wizard 29 Password 32 Tim e Z o ne 3 2 W AN Settings 33 LAN Settings 38 DHCP 38 W ir eless Settings 39 Summary 40 5 G ATEWAY C ONFIGURATION Navigating Thr ough the Gateway Conf iguration Pages 41 Main Menu 41 Option T abs 42[...]

Special Applications 65 PC Privileges 67 URL Filter 69 Security 73 System T ools 75 Restart 75 Time Zone 76 Configuration 77 Upgrade 78 Status and Logs 78 Status 79 Usage 79 Logs 80 Support/Feedback 80 Support 81 Feedback 81 6 T R OUBLESHOOTING Basic Connection Ch ecks 83 Browsing to the Gateway Configuration Scr eens 83 Connecting to the Internet [...]

How does a Device Obtain an IP Address and Subnet Mask? 97 DHCP Addressing 97 Static Addr essing 97 Auto-IP Addr essing 97 C T ECHNICAL S PECIFICATIONS Standards 100 D S AFETY I NFORMATION E E ND U SER S OFTWARE L ICENSE A GREEMENT F ISP I NFORMATION G LOSSARY I NDEX R EGULATORY N OTICES FOR THE W IR ELESS 11 G C ABLE /DSL G ATEWAY[...]

A BOUT T HIS G UIDE This guide describes how to install and co nfigur e the OfficeConnect Wi r eless 11g Cable/DSL Gateway (3CRWE5 54G72). This guide is intended for use by th ose r esponsible for installing and setting up network equipment; consequ ently , it assumes a basic working knowledge of LANs (Local Area Networks) and In ternet gateway sys[...]

8 A BOUT T HIS G UIDE Conventions Ta b l e 1 and Ta b l e 2 list conventions that are used throughout this guide. Feedback about this User Guide Y our suggestions are ve ry important to us. Th ey will help make our documentation more useful to you. Please e-mail co mments about this document to 3Com at: pddtechpubs_comments@3com.com Please include [...]

Conventions 9 Example: ■ OfficeConnect Wireless 11g Cable/DSL Gateway User Guide ■ Part Number DUA0055-4AAA01 ■ Page 24 Do not use this e-mail address for technical support questions. For information about contacting T echni cal Support, please refer to the Support and Safety Information sheet. Related Documentation In addition to this guide,[...]

10 A BOUT T HIS G UIDE[...]

1 I NTR ODUCING THE G ATEWAY Welcome to the world of networking with 3Com ® . In the modern business environment, communication a nd sharing information is crucial. Computer networks have proved to be one of the fastest modes of communicatio n but, until r ecently , onl y large businesses could af for d the networking advantage. The OfficeConnect [...]

12 C HAPTER 1: I NTRODUCING THE G ATEWAY Figure 1 Example Network Without a Gateway When you use the Gateway in your network ( Fig ur e 2 ), it becomes your connection to the Internet. Connections can be made directly to the Gateway , or to an OfficeConnect Sw itch or Hub, expanding the number of computers you can have in your network. Figure 2 Exa[...]

Gateway Advantages 13 Gateway Advantages The adva ntages of the Ga teway include: ■ Shared Internet connection for both wired and wireless computers ■ High speed 802.11g wireless networking ■ No need for a dedicated, “alway s on” computer serving as your Internet connection ■ Cross-platform operation for comp atibility with W indows, Un[...]

14 C HAPTER 1: I NTRODUCING THE G ATEWAY Minimum System and Component Requirements Y our Gateway requires that the computer(s) and co mponents in your network be configured with at least the following: ■ A computer with an operating system that supports TCP/IP networking protocols (for exam ple Windows 95/98/NT/Me/2000 /XP , Unix, Mac OS 8.5 or h[...]

Front Panel 15 ■ The administrator ha s invoked the Reset to Fac tory Defaults command, or ■ The system software is in the process of being upgraded In each of these cases, wait until the Gateway has completed the cu rr ent operation and the alert LED is Off. Flashing slowly - The Gateway has completed the Reset to Factory Defaults process, and[...]

16 C HAPTER 1: I NTRODUCING THE G ATEWAY 5 Cable/DSL Status LED Green (100 Mbps link) / yellow (10Mbps li nk) If the LED is on, the link between the Gateway and th e cable or DSL modem is OK. If the LED is flashing, the link is OK and data is being transmitted or received. If the LED is off, nothing is connected, the modem is switched off or ther e[...]

Rear Panel 17 depending on the device to which th ey ar e connected and the type of cable used. 10 Four 10/100 LAN ports Using suitable RJ-45 cab le, you can connect your Gateway to a computer , or to any other piece of equipment th at has an Eth ernet connection (for example, a hub or a switch). The LAN ports will automatically set themselves to M[...]

18 C HAPTER 1: I NTRODUCING THE G ATEWAY[...]

2 H AR DWAR E I NSTALLATION Introduction This chapter will guide you thr ough a basic installation of the Gateway , including: ■ Connecting the Gateway to the Internet. ■ Connecting the Gateway to your network. ■ Setting up your computers for networking with the Gateway . Safety Information WAR NI NG: Please re ad the “Safety Information”[...]

20 C HAPTER 2: H ARDWARE I NSTALLATION When positioning your Gateway , ensure: ■ It is out of direct sunlight and away from sour ces of heat. ■ Cabling is away from power lines, fluor escent lighting fixtures, and sources of electrical noise such as radios, transmitters and broadband amplifiers. ■ W ater or moisture cannot enter the case of t[...]

Before you Install your Gateway 21 Before you Install your Gateway Before you install and configur e your Gateway , you need the following additional information. If you do not have this information, contact your Internet Service Provider ( ISP). Space is provided below for you to recor d this information. If you have a DSL connection and yo ur ISP[...]

22 C HAPTER 2: H ARDWARE I NSTALLATION If your ISP allocates IP information dynamically over a protocol oth er than PPPoE, you do n ot need any further informatio n. This configuration is typical of cable connections. Powering Up the Gateway T o power up the Gateway: 1 Plug the power adapter into the power adapter socket located on the back panel o[...]

Connecting t he Gateway 23 4 Connect your computer to one of the four LAN ports on the Gat eway using a twisted pa ir cable. Check th at the corresponding LAN status LED on the Gateway lights. Y ou have now completed the hardware installation of your Gateway . Next you need to set up your computers so that they can make use of th e Gateway to commu[...]

24 C HAPTER 2: H ARDWARE I NSTALLATION[...]

3 S ETTING U P Y OUR C OMPUTERS The Gateway has the ability to dynami cally allocate network addresses to the computers on your network, usi ng DHCP . However , your computers need to be configured correctly for this to take place. T o change the configuration of your compu ters to a llow this, follow the instructions in this chapter . If your comp[...]

26 C HAPTER 3: S ETTING U P Y OUR C OMPUTERS Figure 6 Local Ar ea Properties Scr een 6 Ensure that the opt ions 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 Scr een 7 Restart your computer .[...]

Obtaining an IP Address Automatically 27 Windows XP 1 From the Windows Start menu, select Cont rol 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 [...]

28 C HAPTER 3: S ETTING U P Y OUR C OMPUTERS Disabling PPPoE and PPTP Client Software If you have PPPoE or PP TP client so ftwar e installed on your computer , you will need to disable it. T o do this: 1 From the Windows Start menu, select Settin gs > Control Panel . 2 Double click on Internet Options. 3 Select the Connectio ns T ab. A screen si[...]

4 R UNNING THE S ETUP W IZAR D Accessing the Wizard The Gateway setup pr ogram is Web-based, which means that it is accessed through your W eb browser (Netscape Navigator 4.7 or higher , Internet Explorer 5.0 or higher , or Mozilla 1.2.1 or higher). T o use the Setup W izar d: 1 Ensure that you have at least one computer conne cted to the Gateway .[...]

30 C HAPTER 4: R UNNING THE S ETUP W IZARD Figure 10 Gateway Login Scr een 5 If the password is corr ect, the Country Selection screen will appear . Select the country you wish to configure the Gateway for , then click Apply . ( Figure 11 ) Figure 11 Country Selection Scr een 6 When you have selected a country either: ■ The We lc ome scre en will[...]

Accessing the Wizard 31 ■ If your Gateway has not been co nfigur ed before, the Wizard will launch automatically (refer to Figur e 13 ). 7 Click Next . 8 Y ou will be guided step by step through a basic setup pr ocedure. Figure 12 W elcome Screen Figure 13 Wizard Screen[...]

32 C HAPTER 4: R UNNING THE S ETUP W IZARD Password Figur e 14 Change Administration Password Scr een When the Change Administration Password screen ( Figure 14 ) appears, type the Old Password , t hen a new passwor d in both the New Password and Confirm Password boxes. 3Com recommends entering a new passwo rd when setting up the Gateway for the fi[...]

Accessing the Wizard 33 The Daylight Savin gs option advances the system clock by one hour . It does not cause the system clock to be updated for daylight savings time automatically . W AN Settings Figur e 16 Internet Settings Screen This Internet Addressing Mode window allows you to set up the Gateway for the type of Inter net connection you have.[...]

34 C HAPTER 4: R UNNING THE S ETUP W IZARD PPPoE Mode Figure 17 PPPoE Scr een T o set up the gateway for use with a PPP over Ether net (PPPoE) connection, use the following procedure: 1 Enter your PP P over Etherne t user name in the PPPoE User Name text box. 2 Enter your PPP over Ether net passwor d in the PPPoE Password text box. 3 Enter your PPP[...]

Accessing the Wizard 35 Dynamic IP Address Mode T o set up the Gateway for use with a dynamic IP address connection: 1 Select the ISP provides configurati on dynamically (via DHCP) and then click Next . See Figure 16 . Figure 18 Hostname Scr een 2 Some ISPs require a host name. If your ISP has this r equirement, enter the host name in the Host Name[...]

36 C HAPTER 4: R UNNING THE S ETUP W IZARD Static IP Mode T o setup the Gateway for use with a st atic IP address co nnection, use the following procedur e: 1 Select ISP has provided a static IP address, (see Figur e 16 ) and then click Next. Figure 20 displays. Figure 20 Static IP Mode Screen 2 Enter your IP Addr ess in the IP Address text box. 3 [...]

Accessing the Wizard 37 PPTP Mode Figure 21 PPTP Mode Scr een T o setup the gateway for use with a PPTP connection, use the following procedur e: 1 Enter your PP TP server address in the PPTP Server Address text box. 2 Enter your PP TP user name in the PPTP User Name text bo x. 3 Enter your PP TP password in the PPTP Password text box. 4 Enter your[...]

38 C HAPTER 4: R UNNING THE S ETUP W IZARD 6 IP settings must be used when establ ishing a PP TP connection. Fill in the Initial IP Address and the Initial Subnet Mask fields if your ISP has provided you with these settings. Alternatively , if the PPTP server is located in your DSL modem, click Suggest to select an IP address on the same subnet as [...]

Accessing the Wizard 39 make your required changes. T o disable DHCP , select Do not enable the DHCP server . Click Next when you have finished. Wireless Settings Figur e 25 Wireless Configuration Screen This screen displays the Channel and Service Area Name. It also allows you to change these settings. There ar e a maximum of 14 channels, the numb[...]

40 C HAPTER 4: R UNNING THE S ETUP W IZARD channel you select as this may be usef ul if you experience problems with your clients. Summary Figure 26 Configuration Summary Screen When you complete the Setup W izard, a configuration summary will display . V erify the configuratio n informat ion of the Gateway and then click Finish to save your settin[...]

5 G ATEWAY C ONFIGURATION Navigating Through the Gateway Configuration Pages This chapter describes all the screens available thr ough the Gateway configuration pages, and is provided as a r eference. T o get to the configuration pages, browse to the Gateway by entering the URL in the location bar of your browser . The default URL is http://192.168[...]

42 C HAPTER 5: G ATEWAY C ONFIGURATION ■ Status and Logs — displays the curren t status and activity logs of the Gateway . ■ Support/Feedback — contains a comprehensive online help system and allows you to provide 3Com with feedback on your Gateway . Option T abs Each corresponding menu page may also provide sub-sections which are accessed [...]

Welcome Screen 43 Password Figur e 28 Password Scr een Changing the Administration Passwor d Y ou can change the password to prevent unauthorized access to the Administration System. T o do this: 1 Enter the current password in the Old Password field 2 Enter the new password in the New Password field 3 Enter the new password again in the Confirm Pa[...]

44 C HAPTER 5: G ATEWAY C ONFIGURATION Wizard Figur e 29 Wizard Screen Click WIZARD... to launch the configuration wizar d. Refer to Chapter 4 for information on how to run the wizard. LAN Settings The LAN Settings menu provides the following options: Unit Configuration Figure 30 Unit Configuration Scr een[...]

LAN Settings 45 The LAN Settings scr een is used to s pecify the LAN IP address of your Gateway , and to configu r e the DHCP server . 1 Select Unit Configuration and t hen specify the Gateway IP Addre ss and Subnet Mask in the LAN Settings field. The default IP address of the Gateway is 192.168.1.1. 2 If you want to use the Gatewa y as a DHCP Serv[...]

46 C HAPTER 5: G ATEWAY C ONFIGURATION ■ client’ s network card. ■ Client T ype — Whether the client is connected to the Gateway by wire d or wirele ss connection. ■ Fix — This box is ch ecked if the IP address is fixed to the MAC address of the client’ s network card. Clients that have fixed addresses will get the same IP address eac[...]

Wireless Settings 47 Wireless Settings T o improve the security of your wireless network, 3Com recommends that you: 1. Change the SSID from its default value - see page 48 2. Enable Encr yption - see page 49 3. Enable Connection Control - see page 53 Configuration Figure 32 Configuration Scr een Enable Wireless Networking Allows you to enable/disab[...]

48 C HAPTER 5: G ATEWAY C ONFIGURATION Choose the Clear Channel Select option to automatically choose the clearest channel. The Gateway w ill check for the clear est channel whenever it is rebooted, powered up, and when the Clear Channel Select option is first applied. V alid channels are countr y dependent. See “ Channels ” on page 12 1 for a [...]

Wireless Settings 49 3Com recommends that you install your wireless network with this featur e enabled and then disable it once yo u have set up the Gat eway and wireless clients. Encryption When setting up wireless networks, it is important to r emember that with encryption disabled, anyo ne with a Wireless PC can eavesdrop on your network. 3Com r[...]

50 C HAPTER 5: G ATEWAY C ONFIGURATION Figure 33 Encryption Keys Scr een showing WP A configuration T o en ter the pr e-shar ed key as hexadecimal digits: 1 Select Enabled - Manua l Pre-shared Key from the WP A Encr yption T ype drop-down box. 2 Enter a pair of hexadecimal digits in each of the 32 Key fields. Each field can contain a hexadeci mal n[...]

Wireless Settings 51 Encryption Keys Figure 34 Encryption Keys Scr een showing WEP configuration A Key is a hexadecimal (0-9, A-F) num ber used to encrypt and decrypt the data. There can be up to 4 keys and each key can b e as long as 26 digits. The Gateway also offers a number of methods for converting plain text into hex keys. The text is much ea[...]

52 C HAPTER 5: G ATEWAY C ONFIGURATION WEP and 13 characters for 128 bit WEP . Y ou must enter a separate string for each of the 4 Keys. Y ou can leave a string blank provided this Key is not selected as the Active T ransmit Key . ■ Passphrase - This is another common method and similar to the 3Com Encryption string. In 64 bit WEP , the passphras[...]

Wireless Settings 53 Connection Contr ol Figure 35 Connection Control Scr een A higher level of security can be achi eved for your wir eless network if you use both encryption and you specify only certain wir eless computers can connect to the Gateway . By default, any wir eless computer that has the same Service Area Name/SSID, cha nnel and encryp[...]

54 C HAPTER 5: G ATEWAY C ONFIGURATION T o create a list of Wireless comput ers that can access the Gateway: 1 Press New . The screen shown in Figur e 36 opens. 2 Select the MAC addresses of the Wireless PCs for which you want to allow access. T o select multiple MAC addresses, hold down the Ctrl ke y while clicking on the addresses. The drop down [...]

Wireless Settings 55 Once an entry has been deleted it canno t be undone. Please wait 30 seconds for changes to take effect. Client List Figure 38 Client List Screen The W ir eless Client List pr ovides de tails on the devices that are connected to the W ir eless LAN. The list is only cr eated when W ir eless Networking is enabled. For each device [...]

56 C HAPTER 5: G ATEWAY C ONFIGURATION Some 3Com W ir eless Network Adapters allow you to import Wireless configurations via a ‘profile’. The Ga teway can generate a pr ofile so that you do not need to configure your Wireless PCs manually . The profile contains three items as follows: ■ Service Area Name/SSID of the Gateway This is co nfigur [...]

Internet Settings 57 Internet Settings Befor e you can config ure the Gateway , you need to know the IP information allocation method u sed by your ISP . There are four differ ent ways that ISPs can allocate IP information, as described below: 1 Static IP Address (DSL or Cable) The ISP provides the IP addressing in formation for you to enter manual[...]

58 C HAPTER 5: G ATEWAY C ONFIGURATION When you install the Gateway , you will not need to use the dialup VPN on your PC anymore. Connection to ISP Figure 40 Connection to ISP Screen Before beginning this section, ensure you have the requir ed information from your ISP . (See “ Before you Install your Gateway ” on page 21 .) Select Internet Se [...]

Internet Settings 59 Static IP Addr ess Figure 41 Connection Parameters Scr een - Static IP T o set up the Gateway for use with a Static IP addr ess connection: 1 Select Static IP Addres s (to be specified manually) in the IP Allocation Mode field ( Figure 41 ). 2 Enter your IP Addr ess in the IP Address text box. This information, along with the r[...]

60 C HAPTER 5: G ATEWAY C ONFIGURATION Dynamic IP Address Figure 42 Connection Parameters Scr een - Dynamic IP If this mode is selected, your IP Address, Subnet Mask, and DNS Addr ess will be obtained automatically from yo ur ISP . They ar e not displayed on this screen, but may be viewed on the Status scr een (click on Status and Logs on the left [...]

Internet Settings 61 ■ Use this PC’ s M AC address - This field is automatically filled in with the MAC address of the PC you ar e using to configure the Gateway . Y ou should use this address only if you wer e pr eviously using this computer to connect directly to your modem. ■ Enter a new MAC ad dress manually - Use this option if you want [...]

62 C HAPTER 5: G ATEWAY C ONFIGURATION 6 Enter your PPP over Ethernet service name in the PPPoE Service Name text box. Not all ISPs requir e a PPPoE serv ice name. Only enter a service name if your ISP r equires this. 7 Select an idle time from the Maximu m Idle Time drop-down list. This value will corres pond to the amount of idle time (no Interne[...]

Firewall 63 5 Enter your Primary DNS Address and Secondary DNS address . Y our ISP may provide you with primar y and secondary DNS addr esses. If they have been provided, enter the addresses in the appropriate text boxes. If not, leave 0.0.0.0 in the boxes. 6 Select an idle time from the Maximu m Idle Time drop-down list. This value will corres pon[...]

64 C HAPTER 5: G ATEWAY C ONFIGURATION DMZ (De-Militarized Zone) Host is a computer without the pr otection of the firewall. This feature allows a single computer to be exposed to unrestricted 2-way communication from outside of your network. This feature should be used only if the Virtual Serve r or Special Applications options do not provide the [...]

Firewall 65 Or select Custom to specify a suitable name for the service and then enter the port numbe rs requi red for that service. ( Figur e 47 ) Figure 47 Custom Setup Scr een 4 Click Add to save the settings. The port numbers are specified usin g a comma-separated list, with hyphens to denote port number rang es. So for example, en tering 2, 3,[...]

66 C HAPTER 5: G ATEWAY C ONFIGURATION trigger port and inco ming port(s), where traffic on the trigger port tells the firewall to open the incoming ports. Each defi ned Special Ap p lication only supports a single computer user , and up to 10 Special Applications ca n be defined. Any incoming port s opened by a Special Applic ation trigger will be[...]

Firewall 67 Figure 50 Other Applications Setup Screen 3 Click Add to save your settings. Only one computer on your network can use the special application at any one time. PC Privileges Figure 51 PC Privileges Scr een Select PC Privileges to displa y the PC Privilege setup screen ( Figur e 51 ). Access from the local network to th e Internet can be[...]

68 C HAPTER 5: G ATEWAY C ONFIGURATION T o use access control for all computers: 1 Click PCs access authorized services only . 2 Select All PCs to setup the access rights for all computers connected to the Gateway . 3 Select authorized services by clic king in the appr opriate check box(es) ( Figure 52 ). Figure 52 All PCs Setup Scr een In addition[...]

Firewall 69 Figure 53 PC Privileges Setup Scr een Example 5 Click Modify to save the settings or Close to discard them. T o assign different access rights for dif ferent computers: 1 If not already selected, click PCs access authorized services only . 2 Click New to d isplay the PC Privileges setting scr een. 3 Enter the last digit(s ) of the IP ad[...]

70 C HAPTER 5: G ATEWAY C ONFIGURATION Deny List T o allow users access to all W eb sites except for those you choose to block, choose Deny List in the URL Filter T ype drop-down box ( Figur e 54 ). Figure 54 URL Filter Scr een showing Deny List T o filter a specific site, enter the UR L for that site. For example, to stop your users from br owsing[...]

Firewall 71 contained within other words. For example, filtering the word sex would filter the following example URLs: ■ www.sussex.com ■ www.thisexample.com Y ou can filter up to 30 keywords and URLs. Computers that should not be subject to URL filterin g can be excluded by ticking the Bypass URL Filter checkbox in the PC Privileg es setup scr[...]

72 C HAPTER 5: G ATEWAY C ONFIGURATION ■ Allow them individually by entering this.goodsite.com in one field and that.goodsite.com in another . or ■ Allow them by enteri ng the keyw ord goodsite.com into one of the fields. This will allow all UR Ls containing the string goodsite.com . As well as allowing this.goodsite.com and that.goodsite.com ,[...]

Firewall 73 Security Select Security to display the Security scre en ( Figure 56 ). Figure 56 Security Scr een The Internet connects millions of co mputer users throughout the world. The vast majority of the computer users on the Inter net are friendly and have no intention of b r eaking into , stealing f r om, or damaging your network. However , t[...]

74 C HAPTER 5: G ATEWAY C ONFIGURATION This feature is enabled by clicking on the check box so that a tick can be seen and then select Apply . 3Com recommends that you leave this disabled. Enabling Remote Administration It is possible to administer the Gateway remotely . This can be set to one of four differ ent levels using the following options: [...]

System Tools 75 System T ools The main frame of the System T ools screen includes four administration items: Restart, Time Zone, Configuration , and Upgrade ( Figure 57 ). Restart Figure 57 Restart Screen If your Gateway is not operating correctly , you can choose to restart the Gateway by selecting Restart the Gateway , simulating the effect of po[...]

76 C HAPTER 5: G ATEWAY C ONFIGURATION Time Zone Figure 58 Time Zone Scr een Choose the time zone that is closest to your actual location. The time zone setting is used by the system clock when displaying the correct time in the log files. If you use Daylight saving tick the Enable Dayligh t savings box, and then click Apply ( Figure 58 ). The Gate[...]

System Tools 77 Configuration Figure 59 Configuration Scr een Select the Configuration tab to display the Configuration scr een ( Figure 59 ). Backup Configuration Click BACKUP to save the curr ent Gatewa y configuration. Y ou will be pr ompted to downloa d and save a file to disk. Restore Configuration Data If you want t o r einstate the configura[...]

78 C HAPTER 5: G ATEWAY C ONFIGURATION Upgrade Figure 60 Upgrade Scr een The Upgrade facility allows you to install on the Gateway any new releases of system software that 3Com may make available. T o install new software, you first need to downlo ad the software from the 3Com support web site to a folder on your computer . On ce you have done this[...]

Status and Logs 79 Status The Statu s scr een displays a tabular repr esentation of your network and Internet connection. ( Figure 61 ) Figure 61 Status Scr een Usage Usage displays an approximate count of the traffic since the Gateway was last reset. ( Figure 62 ) The counts are approximate and shou ld be used as a guide only . Contact your ISP fo[...]

80 C HAPTER 5: G ATEWAY C ONFIGURATION Figure 62 Usage Scr een Logs Logs will allow you to view both the normal events, and security threats logged by the Gateway . Figure 63 Logs Scr een Y ou may be asked to refer to the information on the Status and Logs screens if you contact your supplier for technical suppor t. Support/Feedback Selecting Suppo[...]

Support/Feedback 81 Support Figure 64 Support Scr een Selecting the Support option on the main menu displays the support links screen, which contains a list of Internet links that provide information and support concer ning the Gateway ( Figure 64 ). Feedback Figure 65 Feedback Scr een[...]

82 C HAPTER 5: G ATEWAY C ONFIGURATION Selecting the Feedback option displays the Feedback screen and all ows you to provide feedback to 3Com on the operation of your Gateway ( Figure 65 ). This scre en should not be used to obtain technical support.[...]

6 T R OUBLESHOOTING Basic Connection Checks ■ Check that the Gateway is connected to your computers and to the cable/DSL modem, and that all th e equipment is powered on. Check that the LAN Status and Cable/DS L Status LEDs on the Gate way are illuminated, and that any corresponding LEDs on the cable/DSL modem and the NIC ar e also illuminated. ?[...]

84 C HAPTER 6: T ROUBLESHOOTING Connections tab and click on the LAN Settings button at the bottom. Make sure that the Proxy Ser ver option is unchecked. ■ If you cannot b r owse to the Gateway , use the winipcfg utility in Wi ndows 95/98/ME to verify that your computer has received the corr ect addr ess info rmation fr om th e Gateway . Fr om th[...]

Forgotten Password and Reset to Factory Defaults 85 Forgotten Password and Reset to Factory Defaults If you can browse to the Gateway configuration screen but cannot log on because you do not know or have forgotten the password, follow the steps below to reset the Gateway to it’ s factory default configuration . CAUTION: All your configuration ch[...]

86 C HAPTER 6: T ROUBLESHOOTING ■ If you have a wired and a wir eless NIC in the same computer , ensure that the wir ed NIC is disabled. ■ Check the status of th e Gateway Wireless LED, it should be lit if wireless is enabled and will fl ash when there is wir eless activity . If not lit go to “ W ireless S etting s” on page 47 and enable wi[...]

Power LED or Power Adapter OK LED Not Lit 87 correspond to the Gateway channel number . Please refer to your Wi r eless computer adapter documentation and vendor to do this. ■ Speed of connect ion: The 802.11b and 802.11g standards will automatically choose the best spee d depending on the q uality of your connection. As the signal quality weaken[...]

88 C HAPTER 6: T ROUBLESHOOTING adapter part number sho wn on the Of ficeConnect power adapter you are using. Alter natively , quote the part number for your region: Ta b l e 3 Power Adapter Part Numbers Alert LED The Alert LED will flash when the Gatew ay unit is first power ed up while the system software checks the hardware for pr oper operation[...]

Recovering from Corrupted Software 89 Recovering from Corrupted Software If the Alert LED remains permanently on follo wing power -up, it is possible that the system software has become corrupted. In this condition, the Gateway will enter a “recovery” state; DHCP is disabled, and the LAN IP address is set to 192.168.1.1. Follow the instructions[...]

90 C HAPTER 6: T ROUBLESHOOTING Frequently Asked Questions How do I re set the Gateway to Factory Defaults? See “ Forgott en Passwor d and Reset to Factory Defaults ” on page 85 . How many computers on the LAN does the Gateway sup port? A maximum of 253 computers on the LAN are supported. How many wir eless clients does the Wir eless Cable/DSL [...]

Frequently Asked Questions 91 is a database of technical inform ation covering all 3Com pr oducts. It is updated daily with informat ion from 3Com technical support services, and it is available 24 ho urs a day , 7 days a week.[...]

92 C HAPTER 6: T ROUBLESHOOTING[...]

A U SING D ISCOVERY Running the Discovery Application 3Com provides a user friendly Disc overy application for detecting the Gateway on the netwo rk. Windows Installation (95/98/2000/Me/NT) 1 Insert the Gateway CD-ROM in the CD-ROM drive on your computer . A menu will appear; select Gateway Discover y . Discovery will find the Gateway even if it is[...]

94 A PPENDIX A: U SING D ISCOVERY Figure 67 Discover ed Gateway Screen 3 Figur e 68 shows an example Discovered Devices screen. Highlight the Wireless Cable/DSL Gateway by clicking on it, and press Next . Figure 68 Discovery Finish Scr een 4 Click on Finish to launch a web br owser a nd displa y the logi n page for the Gateway .[...]

B IP A DDR ESSING The Internet Protocol Suite The Internet protocol suite cons ists o f a well-defined set of communicat ions pr otocols and severa l standar d application protocols. T ransmission Cont r ol Protocol/Interne t Protocol (TCP/IP) is probably the most widely known and is a combination of two of the protocols (IP and TCP) working togeth[...]

96 A PPENDIX B: I P A DDRESSING For your network to work correctly , all devices on the network must have: ■ The same sub-network ad dr ess. ■ 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[...]

How does a Device Obtain an IP Addr ess and Subnet Mask? 97 This type of IP Address operates on a subnet mask of ‘255.255.0.0’. See Ta b l e 5 for an example about how a network (only four computers re pre sented) an d a Gateway might be configur ed. Ta b l e 5 IP Addressing and Subnet Masking How does a Device Obtain an IP Address and Subnet M[...]

98 A PPENDIX B: I P A DDRESSING an IP address at random fr om th e industry s tandar d subnet of 169.254.x.x (with a s ubnet mask of 255.255.0.0). If two devices allocate themselves the same address, the c onflict is detected and one of the devices allocates itse lf a new address. Automatic IP addressing support was intr oduced by Microsoft in the [...]

C T ECHNICAL S PECIFICATIONS This section lis ts the technical sp ecifications for the OfficeConnect W ir eless 11g Cable/DSL Gateway . Wireless 11g Cable/DSL Gateway Interfaces Cable/DSL modem connection — 10Mbps/100Mbp s dual speed Ethernet port (10BASE-T/100BASE-TX) LAN connection — four 10Mbp s/100Mbps dual speed Ethernet port s (10BASE-T/1[...]

100 A PPENDIX C: T ECHNICAL S PECIFICATIONS Encryption: 40/64 bit WEP , 128 bit WEP , WP A Maximum clients: 128 O/P Power 18dBm Operating T emperature 0 °C to 40 °C (32 °F to 105 °F) Power 7V A, 23.9 BThU/hr Humidity 0 % to 90 % (non-condensing) humidity Dimensions ■ Wi dth = 220 mm (8.7 in.) ■ Depth = 135 mm (5.3 in.) ■ Height = 24 mm (1[...]

101 systems. RSS-210 Environmental: EN 60068 (IEC 68) *See “FCC Statement” on pag e 121 for conditions of o peration. System Requirements Operatin g Systems The Gateway will support the following Operating Systems: ■ Wi ndows 95/98 ■ Wind ows NT 4.0 ■ Wi ndows ME ■ Wi ndows 2000 ■ Wi ndows XP ■ Mac OS 8.5 or higher ■ Unix Ethernet[...]

102 A PPENDIX C: T ECHNICAL S PECIFICATIONS[...]

D S AFETY I NFORMATION Important Safety Information WAR NI NG : Warnin gs contain directions th at you must follo w for your personal safety . Follow all dir ections carefully . Y ou must read the following safety information carefu lly before you install or remove the unit: WAR NI NG : The G ateway generates and uses radio frequency (rf) energy . [...]

104 A PPENDIX D: S AFETY I NFORMATION WAR NI NG : Disconnect the power adapter before moving the unit. WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They cannot be used as telephone so ckets. Only conn ect RJ-45 data connectors to these sockets. Wichtige Sicherheitshinweise VORSICHT : Warnhinweise enthalten Anweisungen, die Sie zu Ih[...]

105 VORSICHT : Es sind keine von dem Benutzer zu ersetzende oder zu wartende T eile in dem Gerät vorhanden. Wenn Sie ein Problem mit dem Gateway haben, das nicht mitte ls der Fehleranalyse in dieser Anleitung behoben werden kann, setz en Sie sich mit Ihrem Liefera nten in V erbind ung. VORSICHT : V or dem Ausbau des Gerä ts das Netzadapterkabel h[...]

106 A PPENDIX D: S AFETY I NFORMATION A VERTISSEMENT : L ’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à la norme CEI 60950. Ces conditions ne sont maintenues que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. A VERTISSEMENT : Il n’y a pas de parties remplaceables pa[...]

E E ND U SER S OFTWAR E L ICENSE A GR EEMENT 3Com Corporation END USER SOF TW ARE LICENSE AGREEMENT YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CO NDITIONS BEFORE DOWNLOADING, INSTALLING AND USING THIS PRODUCT, THE USE OF WHICH IS LICENSED BY 3COM CORPORATIO N ("3COM") TO ITS CUSTOMERS FOR THEIR USE ONLY AS SET FORTH BELOW. DOWNLOAD[...]

108 A PPENDIX E: E ND U SER S OFTWARE L ICENSE A GREEMENT and developed solely at private expense. Th e Sof tware is delivered as "Commercial Comp uter Software" as defined in DFARS 252.22 7-7014 (June 1995) or as a commercial item as defined in FAR 2.101(a) and as such is provid ed with only suc h rights as are provided in this Agreement[...]

F ISP I NFORMATION Information Regarding Popular ISPs WAN Types Characteristics Popular ISPs Dynamic IP (Clone MAC) Cable modem ISP, non-ho stname 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. Dynamic IP (Hostname) Cable ISP, R[...]

110 A PPENDIX F: ISP I NFORMATI ON *Bell includes Bell Advantage, Bell Canada, Bell South, PacBell and Southwester n Bell. Static (DSL) DSL Modem, always on. Need to enter ALL IP information from ISP in the Static IP address section of the Internet Settings page. CableSpeed, Cnet, Direct Link, Drizzle, DSL Extreme, E arthlink Wireless, Fast Point, [...]

G LOSSARY 802.11b The IEEE specification for wireless Ethe rnet which allows speeds of up to 11 Mbps. The standard pr ovides for 1, 2, 5.5 and 11 Mbps da ta rates. The rates will switch automatically depending on range and environment. 802.11g The IEEE specification for wireless Ethe rnet which allows speeds of up to 54 Mbps. The standard pr ovides[...]

112 G LOSSARY configure to use the best common speed. The or der of prefer ence (best first) is: 100BASE-TX full duplex, 1 00BASE-TX half duplex, 10BASE-T full duplex, and 10BASE-T half duplex. Auto -negotiation is defined in the IEEE 802.3 standard for Ether net and is an oper ation that takes place in a few milliseconds. Bandwidth The information[...]

G LOSSARY 113 IP addresses (such as 192.34.45.8). A DNS server keeps a database of host computers and th eir r espective do main 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 hom[...]

114 G LOSSARY Hub A device that regenerates LAN traffic so that the transmission distance of that signal can be extended. Hubs are similar to repeaters, in that they connect LANs of the same type; howe ver they connect more LANs than a repeater and ar e generally more sophisticated. IEEE Institute of Electrical and Electr onics Engineers. This Amer[...]

G LOSSARY 115 MAC Media Access Contr ol. A protocol spec ified by the IEEE for determining which devices have access to a network at any one time. MAC Address Media Access Control Addr ess. Also called the hardwar e or physical address. A layer 2 address associated with a particular network device. Most devices that connect to a L AN have a MAC add[...]

116 G LOSSARY SSID Service Set Identifi er . Some vendors of wireless pr oducts use SSID interchangeably with ESSID. Subnet Address An exten sion of the IP addressing scheme that allows a site to use a single IP network address for multiple physical networks. Subnet mask A subnet mask, which may be a part of the TCP/IP inform ation provi ded by you[...]

G LOSSARY 117 WA N Wi de Ar ea Network. A network that connects computers located in geographically separate areas (for exam ple, differ ent buildings, cities, or countries). The Internet is an example of a wide area network. WECA Wireless Ether net Compatibility Allia nce. An industry gr oup formed to certify cross vendor interoperability and comp[...]

118 G LOSSARY[...]

I NDEX A Access Rights 69 Addresses IP 95 Administration Password 32, 43 Automatic Addressing 97 C Cable Specifications 101 Channels 121 Clone MA C address 60 Configuration backup 77 res tor e 77 Conventions notice icons, About This Guide 8 text, About This Guide 8 Country Selection 30 D DHCP 35, 38, 45, 97 DHCP Server 27 Discovery Application 93 D[...]

120 I NDEX R Remote Administration 74 Reset to Factory Defaults 77, 85 Restart 75 S Safety Information 19 Security 73 Setup W izar d 29, 44 Special Applications 65 Specifications technical 99 Static Addressing 97 Static IP Address 57, 59 Status 79 Subnet Mask 36, 38, 95 Summary 40 Support Information 80 Support Links 81 T TCP/IP 25, 27, 38, 95 T ec[...]

R EGULATORY N OTICES FOR THE W IR ELESS 11 G C ABLE /DSL G ATEWAY Channels Use of the W ir eless Cable/DSL Gateway is only authorized for the channels approved by each country . For proper installation, login to the management interface and select your country fr om the drop down list. Ta b l e 5 below details the channels permitted by the local re[...]

122 frequency energy a nd, if not installed and used in accordance with the instructions, may cause harmful inte rfer ence to radio commun ications. However , there is no guarantee that interference will not occur in a particular installation. Information to the User If this equipment does cause interfer e nce to radio or television reception, whic[...]

123 ■ Federal Communications Commission 47 CFR Part 15, subpart B 15.107 (a)Class B Conducted Limits 15.109 (a)Class B Radi ated Emissions Limits ■ 15.107 (e)Class B Conducted Limits 15.109 (g)Class B Radiated Emissions Limits Exposure to Radio Fr equency Radiation: The radiated output power of the 3Com OfficeConnect Wireless Cable/ DSL Gateway[...]

124 RF Exposure Compliance Statement (U.S.) CAUTION : The 3Com OfficeConnect W i reless Cable/DSL Gateway has been certified as a mobile computing device as per FCC Section 2.1091. In order to comply with the FCC RF exposure requirements, the 3Com OfficeConnect Wireless Cable/DSL Gate way must only be installed with approved antennas and a min imum[...]

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3Com Corporation, Corporate Headquarters, 5500 Great America Parkway , Santa Clara, CA 95052-8145, USA. T o learn more about 3Com products and services, visit our World Wide Web site at www .3com.com All specifications are subject to change without notice. Copyright © 2003 3Com Corporation. All rights reserved. 3Com and OfficeConnect are r egister[...]