3Com 3CRWE52196 manuale d’uso

http://www.3com.com/ Part No. DUA0085-5AAA04 Published October 2002 Of ficeConnect ® Cable/DSL Gateway W ir eless Cable/DSL Gateway User Guide 3C857 3CRWE52 196 (3CRWE52196 Only)[...]

3Com Corporati on 5400 Bayfront Plaza Santa Clara, California 95052-8145 Copyright © 2002, 3Com T echnologies. All rights r eserv ed. No par t of this documentation may be repr oduced in any form or by any means or used to make any derivative work (such as translati on, transformation, or adaptation) without writt en permission fr om 3Com T echnol[...]

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 Cable/DSL Gateway and Wireless Cable/DSL Gateway 11 Gateway Advantages 13 Package Contents 13 Minimum System and Co mponen t Requirements 14 Front Panel 14 Rear[...]

W indows 95/98/ME 27 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 on e 32 W AN S ettings 33 LAN Settings 38 DHCP 38 Wireless Settings 39 Summary 40 5 G ATEWAY C ONFIGURATION Navigating Thr ough the Gateway Configur ation Pages 41 Main Menu[...]

PC Privileges 65 Security 67 System T ools 69 Restart 69 Time Zone 69 Configuration 70 Upgrade 71 Status and Logs 72 Status 73 Logs 73 Support 73 6 T R OUBLESHOOTING Basic Connection Ch ecks 75 Browsing to the Gateway Configuration Scr eens 75 Connecting to the Internet 76 Forgotten Passwor d and Reset to Factory Defaults 76 W ir eless Networking 7[...]

C T ECHNICAL S PECIFICATIONS D S AFETY I NFORMATION E E ND U SER S OFTWARE L ICENCE A GR EEM ENT F ISP I NFORMATION G LOSSARY I NDEX R EGULATORY N OTICES F OR THE C ABLE /DSL G ATEWAY R EGULATORY N OTICES FOR THE W IR ELESS C ABLE /DSL G ATEWAY[...]

A BOUT T HIS G UIDE This guide describes how to install and co nfigur e the OfficeConnect Cable/DSL Gateway (3C857) and the Of ficeConnect W ireless Cable/DSL Gateway (3CRWE52196). All procedures in this guide apply to both Gateways except when stated. This guide is intended for use by th ose r e sponsible for installing and setting up network equi[...]

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 ar e 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: ■ Offi ceConnect Cable/DSL Gateway and W ire less Cable/DSL Gateway User Guide ■ Part Number DUA0085-5AAA04 ■ Page 24 Do not use this e-mail address for technical support questions. For information about contacting T ech ni cal Support, please refer to the Support and Safety Information sheet. Related Documentation In a[...]

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 , only lar ge 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 Of ficeConnect Sw itch or Hu b, expanding the number of computers you can have in your network. Figure 2 E[...]

Gateway Advantages 13 Gateway Advantages The adva ntages of the Ga teway include: ■ Shared Internet connection for wir ed computers. The W ir eless Cable/DSL Gateway also provides shar ed inter net connection to wireless computers ■ No need for a dedicated, “alway s on” computer serving as your Internet connection ■ Cross-platform operati[...]

14 C HAPTER 1: I NTRODUCING THE G ATEWAY Minimum System and Component Requirements Y our Gateway requir es that the comp uter(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 exam ple Windows 95/98/NT/Me/2000 /XP , Unix, Mac OS 8.5 or [...]

Front Panel 15 ■ The Gateway has just been starte d up and is running a self-test rou ti ne, or ■ 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 en t operation and the alert LED is Off. Fl[...]

16 C HAPTER 1: I NTRODUCING THE G ATEWAY 4 Wireless LAN (WLAN) Status LED * Available on the OfficeConnect Wi reless Cable/DSL Gateway only Y ellow If the LED is on it indicates that wi reless networking is enabled. If the LED is flashing, data is bein g transmitted or r eceived. If the LED is off, the Wi r e less LAN has been disabled in the Gatew[...]

Rear Panel 17 7 Power Adapter Socket Only use the power adapter supplied with this Gateway . Do not use any other adapter . 8 Ethernet Cable/DSL port Use the supplied patch cable to connect the Gateway to the Ethernet port on your cable or DSL modem. The port will automatically adjust to the correct speed and duplex. 9 Four 10/100 LAN ports Using s[...]

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 NIN G: Please re ad the “ Safety Information ?[...]

20 C HAPTER 2: H ARDWARE I NSTALLATION connections to computers in both horizontal and vertical directions, allowing wide r coverage. 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 r[...]

Before you Install your Gateway 21 CAUTION: Only wall mount single unit s, do not wall mount stacked units. 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 pr ovided below for y[...]

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 3 Connect the cable or DSL modem to the Internet. 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 corr espon ding LAN status LED on the Gateway lights. Y ou have now completed the har dware installation of your Gateway . Next you need to set up your compute[...]

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 Obt ain 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 or Intern et Explorer). T o use the Setup W iz ard: 1 Ensure that you have at least one computer conne cted to the Gateway . Refer to Chapt er 2 for details on how to do this. 2 L[...]

30 C HAPTER 4: R UNNING THE S ETUP W IZARD Figure 10 Gateway Login Scr een 5 If the password is correct, the Country Selection screen will appear (on the W ir eless Cable/DSL Gateway only). Select the countr y you wish to configure the gateway for , then click Apply . ( Figure 11 ) Figure 11 Country Selection Scr een 6 When you have logged in (Cabl[...]

Accessing the Wizard 31 or ■ 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 thr ough a basic setup procedur e. 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 Inter net Settings Scr een This Internet Addressing Mode window allows you to set up the Gateway for the type of Inter net connection you hav[...]

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 bo x. 2 Enter your PPP over Ether net passwor d in the PPPoE Password text box. 3 Enter your PP[...]

Accessing the Wizard 35 Dynamic IP Address Mode T o set up the Gateway for use with a dynamic IP addr ess 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 Nam[...]

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 Figure 16 ) and then click Next. Figure 20 displays. Figure 20 Static IP Mode Screen 2 Enter your IP Addr ess in the IP Ad dress 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 PP TP 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 fin ished. If you have a Cable/DSL Gateway , your Gateway is now configured and ready for use. See Chapter 5 for a detailed description of the Gateway configuration screens. If you have a Wireless Cable/DSL Gateway [...]

40 C HAPTER 4: R UNNING THE S ETUP W IZARD It is very impor tant that you set up your wireless clients to use the same Service Area Name or SSID as the one you use on this screen. If your clients use a different Service Area Na me then they will not be able to communicate with the Gateway . The choice of channel is less important as Clients will ge[...]

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 - contains a comp r ehensive online help system Option T abs Each corresponding menu page may also provide sub-sections which are accessed through the use of tabs (see Figur e 27 for example). T o access a sub-sec[...]

Welcome Screen 43 Notice Board Figure 28 Notice Board Scr een The Notice Board is used to display configuration war ning messages. For example, you would be warned if you had disabled the Firewall. Password Figur e 29 Password Scr een Changing the Administration Passwor d Y ou can change the password to pr event unauthorized access to the Administr[...]

44 C HAPTER 5: G ATEWAY C ONFIGURATION If you have forgotten your password you need to reset the Gateway . See “ Forgotten Password and Reset to Factory Defaults ” on page 76 Wizard Figur e 30 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 Sett[...]

LAN Settings 45 The LAN Settings scr een is used t o specify the LAN IP address of your Gateway , and to configure 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 Server[...]

46 C HAPTER 5: G ATEWAY C ONFIGURATION As the IP address is fixed to a MA C addr ess, then each particular computer will normally be issued with the same IP address. The only time that a PC will get a differ ent IP address is if the unit is reset to factory defaults or the DHCP server has run out of IP addresses. Wireless Settings The following sec[...]

Wireless Settings 47 channel number . Usually the Wi r e less computers will scan to find the correct channel, but if they don't you must configur e them to use the same Channel number as the Gateway . V alid ch annels are country depen dent. See “ Channels ” on page 115 for a list of channels approved by each countr y . Service Area Name/[...]

48 C HAPTER 5: G ATEWAY C ONFIGURATION Encryption Figure 34 Encryption Scr een Wi r e d Equivalent Privacy or WEP allows you to encrypt th e traf fic between your W ireless PC and the Gate way . It is important to r emember that with WEP disabled anyone with a W ir eless PC can eavesdrop on your network. 3Com recommends that you get the network wor[...]

Wireless Settings 49 Encryption Keys Figure 35 Encryption Keys Scr een 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 easier to remember than hex [...]

50 C HAPTER 5: G ATEWAY C ONFIGURATION ■ Passphrase - This is another common method and similar to the 3Com Encryption string. In 64 bit WEP , the passphrase will generate 4 differ en t keys. However , in 128 bit WEP , this metho d only generates 1 key which is replicated for all 4 keys. The passphrase can be up to 31 characters long and may cont[...]

Wireless Settings 51 same Service Area Name/SSID, cha nnel and encryption settings as the Gateway can connect to it. Select Only Authorised W ireless PCs can connect to the Gateway to enable and configure this feature. If you enable this feature from a Wireless PC, it will automatically be added to the Authorised Wireless PC list. Authorised Wire l[...]

52 C HAPTER 5: G ATEWAY C ONFIGURATION 3 Press Add . Click Close to discard all changes. Modifying a MAC Address 1 Click on the MAC address to be modified in the table ( Figu r e 38 ) 2 Modify the MAC addr ess. The MAC ad dress can be edited manually , or a differ en t MAC addr ess may be selected from the drop down list of detected addresses. 3 Pr[...]

Wireless Settings 53 Client List Figure 39 Client List Screen The W ir eless Client List provides de tails on the devices that are connected to the W ir eless LAN. The list is only crea ted when W ir eless Networking is enabled. For each device that is c onnected to the Wi r e less LAN, the MAC address and Connection Speed of that device is display[...]

54 C HAPTER 5: G ATEWAY C ONFIGURATION ■ Service Area Name/SSID of the Gateway This is co nfigur ed on t he Configuration tab un der the Wireless Settings option. ■ Encryption settings from the Gateway This is co nfigur ed on t he Encryption tab un der the Wireless Settings option. ■ Profile Name This is used to identify the profile once it h[...]

Internet Settings 55 Internet Settings Befor e you can config ure the Ga teway , 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 manua[...]

56 C HAPTER 5: G ATEWAY C ONFIGURATION When you insta ll the Gateway , you will not need to use the dialu p VPN on your PC anymore. Connection to ISP Figure 41 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 S[...]

Internet Settings 57 Static IP Addr ess Figure 42 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 42 ). 2 Enter your IP Addr ess in the IP Ad dress text box. This information, along with the [...]

58 C HAPTER 5: G ATEWAY C ONFIGURATION Dynamic IP Address Figure 43 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 59 ■ Use this PC’ s MAC a ddress - 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 were previously using this computer to connect directly to your modem. ■ Enter a new MAC ad dress manually - Use this option if you want to[...]

60 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 se rvice 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 Intern[...]

Firewall 61 6 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 Internet activity) that will pass befor e the Gateway automatica lly ends your PPTP session. 7 IP settings must be used when establ ishing a PP TP connection. Fill in the Initial IP Address and the Initial Subnet [...]

62 C HAPTER 5: G ATEWAY C ONFIGURATION Virtual Server Activating and configuring a virtual server allows one or more of the computers on your network to function as a public server . For example, one of your computers could be configured as an F T P server , allowing others out side of your of fice network to download files of your choos ing. Or , [...]

Firewall 63 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, 5-7 would cause ports 2, 3, 5, 6, and 7 to be activa ted. Special Applications Figure 49 Special Applications Screen Select Special Applications tab to display Authorized Application setup screen. ( F[...]

64 C HAPTER 5: G ATEWAY C ONFIGURATION Figure 50 Special Application Settings Scr een Or select Other to specify a suit able name for the special application and then enter a value in the T rigger Port and Incoming Ports text boxes ( Figure 50 ). These values corr espond to the outbound por t numbers issued by the application. The port numbers are [...]

Firewall 65 PC Privileges Figure 52 PC Privileges Screen Select PC Privileges to displa y the PC Privilege setup screen ( Figur e 52 ). Access from the local network to th e Internet can be controlled on a computer -by-computer basis. In the default configuration th e Gateway will allow all connected computers unlimited access to the Inter net. PC [...]

66 C HAPTER 5: G ATEWAY C ONFIGURATION In addition to the four au thorised se rvices listed, you can choose to allow or block access to other services. Y ou can either: ■ Allow all other services with exceptions, or ■ Block all other services with exceptions 4 T o do this, select Allow or Blo ck from the drop down menu and enter the exceptions [...]

Firewall 67 4 Select authorized services by clic king in the appr opriate check box(es). In addition to the four au thorised se rvices listed, you can choose to allow or block access to other services. Y ou can either: ■ Allow all other services with exceptions, or ■ Block all other services with exceptions See step 4 of the previous section fo[...]

68 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. Disable Firewall The Gateway contains a fire wall that detects attack patterns used by hackers on the Inter n et and once detected will block their access to you[...]

System Tools 69 System T ools The main frame of the System T ools screen includes four administration items: Restart, Time Zone, Configuration , and Upgrade ( Figure 56 ). Restart Figure 56 Restart Screen If your Gateway is not operating correctly , you can choose to r estart the Gateway by selecting Restart the Gateway , simulating the ef fect of [...]

70 C HAPTER 5: G ATEWAY C ONFIGURATION 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 57 ). The Gateway reads the correct time fr om NTP s[...]

System Tools 71 Reset to Factory Default If you want to reset the settings on your Gateway to those that wer e loaded at the factory , click RESET . Y ou will lose all your configuration changes. The Gateway LAN IP addr ess will revert to 192.168.1.1, and the DHCP server on the LAN will be en abled. Y ou may need to r econfigure and restart your co[...]

72 C HAPTER 5: G ATEWAY C ONFIGURATION Status and Logs Figure 60 Status and Logs Scr een Selecting Status and Logs fro m the main menu di splays the Status and Logs screens ( Figu re 60 ) in your W eb br owser window . The Status screen displays a tabular repr esentation of your network and Intern et connection.[...]

Status and Logs 73 Status Status will display the current unit status, including a summary of the configuration Logs Logs will allow you to view both th e normal events, and security threats logged by the Gateway Y ou may be asked to re fer to the information on the Status and Logs screens if you contact your supplier for technical support. Support[...]

74 C HAPTER 5: G ATEWAY C ONFIGURATION[...]

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 and W AN port link status LEDs on the Gateway are illuminated, and that any corresponding LEDs on the cable/DSL modem and the NIC (Wireless Gateway only) ar e[...]

76 C HAPTER 6: T ROUBLESHOOTING choose Run and then enter winipcfg . Check that the computer ha s an IP addr ess 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 Gateway is 192.168.1.1 (the address of the Gatewa y). If th ese are not corr ect, use the Release and Renew funct ions to ob[...]

Wireless Networking 77 Gateway connection to the Internet. Al so, other computer users will lose their network connections whilst this pr ocess is taking place, so choose a time when this wo uld be conve nient. 1 Remove power from the Gateway . 2 Disconnect all your computers a nd the cable/DSL modem from the Gateway . 3 Using a straight through Et[...]

78 C HAPTER 6: T ROUBLESHOOTING ■ Ensure that the Wireless Clients are using the same SSID or Service Area Nam e as the Gateway . The SSID is case-sensitive ■ Ensure that you ar e using the same level of security on all of your wireless computers (None, 40/64 or 128 bit) and that all devices are using the same keys, and the same order of keys w[...]

Alert LED 79 centre of the network with Wireless computers distributed around it. Applications are generally available wi th the computer wireless car d to carry out a site survey . Use this application to find the optimal siting for your wireless computer . Consult your Computer Card documentation and vendo r for more details. Alert LED The Alert [...]

80 C HAPTER 6: T ROUBLESHOOTING 1 Remove power from the Gateway an d disconnect the Cable/DSL modem and all your computers, except for the one computer with the software image. 2 Y ou will need to reconfigur e this co mputer with the following static IP address information: ■ IP address: 192.168.1.2 ■ Subnet mask: 255.255.255.0 ■ Default Gate[...]

Frequently Asked Questions 81 There ar e only 4 LAN ports on the Gateway . How are additional computers connected? Y ou can expand the number o f connections available on your LAN by using hubs, switches and wireless access points connected to the Gateway . 3Com wir eless acce ss points and OfficeConnect hubs and switches provide a simple, reliable[...]

82 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[...]

84 A PPENDIX A: U SING D ISCOVERY Figure 63 Discover ed Gateway Screen 3 Figur e 64 shows an example Discovered Devices screen. Highlight the Wireless Cable/DSL Gateway by clicking on it, and press Next . Figure 64 Discovery Finish Scr een 4 Click on Finish to launch a web br owser and display the login 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 pro tocols and se vera l standard application pr otocols. T ransmission Control 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 togethe[...]

86 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 e ss. ■ 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 th[...]

How does a Device Obtain an IP Addr ess and Subnet Mask? 87 This type of IP Address operates on a subnet mask of ‘255.255.0.0’. See Ta b l e 4 for an example about how a network (only four computers re pres ented) and a Gateway migh t be config ured. Ta b l e 4 IP Addressing and Subnet Masking How does a Device Obtain an IP Address and Subnet M[...]

88 A PPENDIX B: I P A DDRESSING an IP address at random fr o m th e industry standard 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 W[...]

C T ECHNICAL S PECIFICATIONS This section lis ts the technical sp ecifications for the OfficeConnect Cable/DSL Gateway and the W ir eless Cable/DSL Gateway . Cable/DSL Gateway Interfaces Cable or DSL modem connection - 10/100 FD. LAN connection - four 10Mb ps/100Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX) Operating T emperature 0 °C to 40[...]

90 A PPENDIX C: T ECHNICAL S PECIFICATIONS Safety: UL 1950, EN 60950 CSA 22.2 #950 IEC 60950 EMC: EN 55022 Class B EN 55024 AS/NZS 3548 B FCC Part 15 Class B* ICES-003 Class B VCCI Class B CNS 13438 Class A Environmental: EN 60068 (IEC 68) *See “ Safety Information ” on page 95 for conditions of operation. System Requirements Operating Systems [...]

91 Wireless Cable/DSL Gateway Interfaces Cable or DSL modem connection - 10/100 FD. LAN connection - four 10Mb ps/100Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX) WLAN Interface Standard IEEE 802.11b, Direct Sequence Spread Spectrum (DSSS) T ransmission rate: 11Mbps, automa tic fallback to 5.5, 2 or 1Mbps Maximum channels: 13 Range up to 304[...]

92 A PPENDIX C: T ECHNICAL S PECIFICATIONS Standards Functional: ISO 8802/3 IEEE 802.3 IEEE 802.11b, W iFi Safety: UL 1950, EN 60950 CSA 22.2 #950 IEC 60950 EMC: EN 55022 Class B EN 55024 AS/NZS 3548 B FCC Part 15 Class B* ICES-003 Class B CNS 13438 Class A ETS 300-826 Radio CFR 47 FCC Part 15. 207, 15.209, 15 .247 and 15.249. ETS 300 328 (2.4 GHz [...]

93 Wireless Performance Th e Wireless Cable/DSL Gateway complies with the IEEE 802.11b specification and conforms to the WiFi interoperability test standar d. Cable Specifications The W ir eless Cable/DSL Gateway supports the following cable types and maximum len gths: ■ Category 3 (Ether net) or Category 5 (Fast Ethernet or Dual Speed Ethernet) [...]

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

D S AFETY I NFORMATION Important Safety Information WAR NI NG : Warnings cont ain directio ns that you must follow for your personal safety . Follow all directions carefully . Y ou must read the following safety information carefully before you install or remove the unit: WAR NIN G : The G ateway generates and uses radio frequency (rf) energy . In [...]

96 A PPENDIX D: S AFETY I NFORMATION WAR NIN G : 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 Ihr[...]

97 VORSICHT : Es sind keine von dem Benutzer zu ersetzende oder zu wartende T eile in dem Gerät vorhanden. We nn 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 erbindung. VORSICHT : V or dem Ausbau des Gerä ts das Netzadapterkabel he[...]

98 A PPENDIX D: S AFETY I NFORMATION A V ER TISSEMENT : L ’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à la norme CEI 95 0. Ces conditions ne sont maintenues que si l'é quipement auquel il est racco rdé fonctionne dans les mêmes conditions. A V ER TISSEMENT : Il n’y a pas de parties remplaceable[...]

E E ND U SER S OFTWAR E L ICENCE 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[...]

100 A PPENDIX E: E ND U SER S OFTWARE L ICENCE 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 such r ights as are provid ed in this Agreemen[...]

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[...]

102 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 standard to which the 3C om OfficeConnect Wireless Cable/DSL Gateway conforms. This standard pr o vides for 1,2,5 and 11 Mbps data rates and a set of fundamental signa ling methods and other services (see WECA). 10BASE-T The IEEE specificatio n for 10 Mbps Ethernet over Category 3, 4 or 5 twisted pair cable. 100BASE-TX Th[...]

104 G LOSSARY 802.3 standard for Ether net and is an oper ation that takes place in a few milliseconds. Bandwidth The information capa city , measur ed in bits per second , that a channel can transmit. The bandwidth of Ethernet is 10 Mbps, the bandwidth of Fast Ether net is 100 Mbps. The bandwidth for 802.11b wireless is 11Mbps. Category 3 Cables O[...]

G LOSSARY 105 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 you r ISP has assi gned. DSL modem DSL stan ds for digital subscriber line. A DSL modem uses your existing phone lines to send and r e ceive data at high speeds. Encrypt[...]

106 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 gener ally mor e sophisticated. IEEE Institute of Electrical and Electr onics Engineers. This Am[...]

G LOSSARY 107 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[...]

108 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 109 WEP Wi r e d Equivalent Privacy . A shar ed key encryption mech anism for wir e less networking. Encrypti on str e ngth is 40/64 bit or 128 bit. WiFi W ir eless Fidelity . This is the certification granted by WECA to pr oducts that meet their intero perability criteria. (see also 802.11b, WECA) Wire less Client The term used to descri[...]

110 G LOSSARY[...]

I NDEX A Access Rights 66 Addresses IP 85 Administration Password 32, 43 Automatic Addressing 87 C Cable Specifications 90, 93 Channels 115 Clone MA C address 58 Configuration backup 70 res tor e 70 Conventions notice icons, About This Guide 8 text, About This Guide 8 Country Selection 30 D DHCP 35, 38, 45, 87 DHCP Server 27 Discovery Application 8[...]

112 I NDEX P Passwor d 29, 43 PC Privileges 65 PING 67 PPPoE 21, 28, 34, 55, 59 PPTP 21, 55, 60 Profile 53 R Remote Administration 68 Reset to Factory Defaults 71, 76 Restart 69 S Safety Information 19 Security 67 Setup W izar d 29, 44 Special Applications 63 Specifications technical 89 Static Addressing 87 Static IP Address 55, 57 Status 73 Subnet[...]

R EGULATORY N OTICES F OR THE C ABLE /DSL G ATEWAY FCC Statement This equipment has been tested and f oun d to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules, and the Canadian Department of Communicati ons Equipment Standards entitled, “Digital Apparatus,” ICES-003. Th ese limits are designed to provid[...]

114 CE Statement (Europe) This pr oduct complies with the European Low V oltage Directive 73/23/EEC, EMC Directive 89/336/EEC as amended by European Dir ective 93/68/EEC. CSA Statement This Class B digital apparatus meets all requirements of the Canadian Interfer ence-Causing Equipme nt Regulatio ns. Cet appareil numérique de la classe B respecte [...]

R EGULATORY N OTICES FOR THE W IR ELESS 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 regulat[...]

116 Information to the User If this equipment does cause interfer e n ce to radio or television r eception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interfer ence by one or more of the following measur es: ■ Reorient the receiving antenna. ■ Relocate the equipm ent with r espect t[...]

117 Exposure to Radio Fr equency Radiation: The radiated output power of the 3Com OfficeConnect Wireless Cable/ DSL Gateway is far below the FCC radio frequency exposur e limits. Nevertheless, the 3Com Of ficeConnec t Wireless Cable/DSL Gateway shall be used in such manner that the potential for human co ntact during normal operation is minimized. [...]

118 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, 5400 Bayfront Plaza, Santa Clara, CA 95052-8145, USA. T o lear n mor e about 3Com products and services, visit our World Wide Web site at www .3com.com All specifications are subject to change without notice. Copyright © 2002 3Com Corporation. All rights reserved. 3Com and OfficeConnect are r egistered tra[...]