3Com 3CRWE554G72T - OfficeConnect Wireless 11g Cable/DSL Router User Manual
  1. Manuals
  2. Brands
  3. 3Com Manuals
  4. Wireless Router
  5. 3CRWE554G72T - OfficeConnect Wireless 11g Cable/DSL...
  6. User manual

3Com 3CRWE554G72T - OfficeConnect Wireless 11g Cable/DSL Router User Manual

Wireless 11g cable/dsl router
Hide thumbs
Table of Contents

Advertisement

Quick Links

OfficeConnect
Wireless 11g Cable/DSL Router

User Guide

3CRWE554G72T
3CRWE554G72TU
http://www.3com.com/
Part No. DUA0554-TAAA02
Published November 2004
®

Advertisement

Table of Contents
loading

Related Manuals for 3Com 3CRWE554G72T - OfficeConnect Wireless 11g Cable/DSL Router

Summary of Contents for 3Com 3CRWE554G72T - OfficeConnect Wireless 11g Cable/DSL Router

  • Page 1: User Guide

    OfficeConnect ® Wireless 11g Cable/DSL Router User Guide 3CRWE554G72T 3CRWE554G72TU http://www.3com.com/ Part No. DUA0554-TAAA02 Published November 2004...
  • Page 2 3Com Corporation reserves the right to revise this documentation and to make changes in content from time USA 01752-3064 to time without obligation on the part of 3Com Corporation to provide notification of such revision or change. 3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satis34factory quality, and fitness for a particular purpose.

  • Page 3: Table Of Contents

    ONTENTS BOUT UIDE Naming Convention Conventions Feedback about this User Guide Related Documentation NTRODUCING THE OUTER OfficeConnect Wireless 11g Cable/DSL Router Router Advantages Package Contents Minimum System and Component Requirements Front Panel Rear Panel ARDWARE NSTALLATION Introduction Safety Information Positioning the Router Using the Rubber Feet Stacking the Router Wall Mounting...
  • Page 4 Windows 95/98/ME Macintosh Disabling PPPoE and PPTP Client Software Disabling Web Proxy UNNING THE ETUP IZARD Accessing the Wizard Password Time Zone WAN Settings LAN Settings DHCP Wireless Settings Summary OUTER ONFIGURATION Navigating Through the Router Configuration Pages Main Menu Option Tabs Welcome Screen Notice Board...
  • Page 5 Firewall Virtual Servers Special Applications PC Privileges URL Filter Content Filter System Tools Restart Time Zone Configuration Upgrade Advanced Static Route Routing Table DDNS Security Status and Logs Status Usage Logs Support/Feedback Support Feedback ROUBLESHOOTING Basic Connection Checks Browsing to the Router Configuration Screens Connecting to the Internet Forgotten Password and Reset to Factory Defaults Wireless Networking...
  • Page 6 SING ISCOVERY Running the Discovery Application Windows Installation (95/98/2000/Me/NT) IP A DDRESSING The Internet Protocol Suite Managing the Router over the Network IP Addresses and Subnet Masks How does a Device Obtain an IP Address and Subnet Mask? DHCP Addressing Static Addressing Auto-IP Addressing ECHNICAL...

  • Page 7: About This Guide

    Cable/DSL Router and contains information that differs from the information in this guide, follow the information in the release note. Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format (PDF) on the 3Com World Wide Web site: http://www.3com.com...

  • Page 8: Conventions

    Feedback about this Your suggestions are very important to us. They will help make our User Guide documentation more useful to you. Please e-mail comments about this document to 3Com at: pddtechpubs_comments@3com.com Please include the following information when commenting: Document title ■...

  • Page 9: Related Documentation

    Conventions Example: OfficeConnect Wireless 11g Cable/DSL Router User Guide ■ Part Number DUA0554-TAAA02 ■ 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 In addition to this guide, each Router document set includes one Documentation...
  • Page 10 BOUT UIDE...

  • Page 11: Introducing The Router

    NTRODUCING THE OUTER ® 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 ®...
  • Page 12 1: I HAPTER NTRODUCING THE OUTER Figure 1 Example Network Without a Router When you use the Router in your network (Figure 2), it becomes your connection to the Internet. Connections can be made directly to the Router, or to an OfficeConnect Switch or Hub, expanding the number of computers you can have in your network.

  • Page 13: Router Advantages

    Router Advantages Router Advantages The advantages of the Router include: Shared Internet connection for both wired and wireless computers ■ High speed 802.11g wireless networking ■ No need for a dedicated, “always on” computer serving as your ■ Internet connection Cross-platform operation for compatibility with Windows, Unix and ■...

  • Page 14: Minimum System And Component Requirements

    1: I HAPTER NTRODUCING THE OUTER Minimum System Your Router requires that the computer(s) and components in your and Component network be configured with at least the following: Requirements 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).
  • Page 15 Front Panel The administrator has invoked the Reset to Factory Defaults ■ command, or The system software is in the process of being upgraded ■ In each of these cases, wait until the Router has completed the current operation and the alert LED is Off. Flashing slowly - The Router has completed the Reset to Factory Defaults process, and is waiting for you to reset the unit.

  • Page 16: Rear Panel

    1: I HAPTER NTRODUCING THE OUTER 5 Cable/DSL Status LED Green (100 Mbps link) / yellow (10 Mbps link) If the LED is on, the link between the Router and the cable or DSL modem is OK. If the LED is flashing, the link is OK and data is being transmitted or received.
  • Page 17 Rear Panel correct speed and duplex, and will set itself to MDI or MDIX depending on the device to which they are connected and the type of cable used. 10 Four 10/100 LAN ports Using suitable RJ-45 cable, you can connect your Router to a computer, or to any other piece of equipment that has an Ethernet connection (for example, a hub or a switch).
  • Page 18 1: I HAPTER NTRODUCING THE OUTER...

  • Page 19: Hardware Installation

    ARDWARE NSTALLATION Introduction 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”...

  • Page 20: Using The Rubber Feet

    ■ Air flow around the unit and through the vents in the side of the case ■ is not restricted. 3Com recommends you provide a minimum of 25 mm (1 in.) clearance. Using the Rubber Use the four self-adhesive rubber feet to prevent your Router from...

  • Page 21: Before You Install Your Router

    Before you Install your Router When making connections, be careful not to push the unit up and off the wall. CAUTION: Only wall mount single units, do not wall mount stacked units. Before you Install Before you install and configure your Router, you need the following your Router additional information.

  • Page 22: Powering Up The Router

    2: H HAPTER ARDWARE NSTALLATION If your ISP allocates fixed or static IP information, you need the following information: IP Address : ____.____.____.____ Subnet Mask : ____.____.____.____ Default Router address : ____.____.____.____ DNS address : ____.____.____.____ If your ISP allocates IP information dynamically over a protocol other than PPPoE, you do not need any further information.
  • Page 23 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.
  • Page 24 2: H HAPTER ARDWARE NSTALLATION To communicate wirelessly with your Router, your wireless NIC should be set as follows: Encryption — none ■ Service Area Name/SSID — 3Com ■ Channel — 11 ■...

  • Page 25: Setting

    ETTING OMPUTERS 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.
  • Page 26 3: S HAPTER ETTING OMPUTERS Figure 6 Local Area Properties Screen 6 Ensure that the options Obtain an IP Address automatically, and Obtain DNS server address automatically are both selected as shown in Figure Click OK. Figure 7 Internet Protocol (TCP/IP) Properties Screen 7 Restart your computer.

  • Page 27: Windows Xp

    Obtaining an IP Address Automatically Windows XP If you are using a Windows XP computer, use the following procedure to change your TCP/IP settings: 1 From the Windows Start menu, select Control Panel. 2 Click on Network and Internet Connections. 3 Click on the Network Connections icon.

  • Page 28: Disabling Pppoe And Pptp Client Software

    3: S HAPTER ETTING OMPUTERS Disabling PPPoE If you have PPPoE or PPTP client software installed on your computer, you and PPTP Client will need to disable it. To do this: Software 1 From the Windows Start menu, select Settings > Control Panel. 2 Double click on Internet Options.

  • Page 29: Running The

    UNNING THE ETUP IZARD Accessing the The Router setup program is Web-based, which means that it is accessed Wizard 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 Router.
  • Page 30 4: R HAPTER UNNING THE ETUP IZARD Figure 10 Router Login Screen 5 If the password is correct, the Country Selection screen will appear. Select the country you wish to configure the Router for, then click Apply. (Figure If your purchased your Router in the United States, you do not see this screen, as it is automatically set.
  • Page 31 Accessing the Wizard 6 When you have selected a country either: The Welcome screen will appear (Figure 12). Select the Wizard tab ■ and click Wizard. If your Router has not been configured before, the Wizard will launch ■ automatically (refer to Figure 13).

  • Page 32: Password

    Old Password, then a new password in both the New Password and Confirm Password boxes. 3Com recommends entering a new password when setting up the Router for the first time. The Router is shipped from the factory with a default password, admin.

  • Page 33: Time Zone

    Accessing the Wizard 2. Write the new password down and keep it in a safe place, so that you can change your settings in the future. Click Next to display the Time Zone setup screen (Figure 15). Time Zone Figure 15 Time Zone Screen Select your time zone from the pull-down menu, check the daylight savings option if required, and then click Next.
  • Page 34 4: R HAPTER UNNING THE ETUP IZARD Internet connection mode, have the modem setting information from your ISP ready. Select an Internet Addressing mode from the following: PPPoE is required (typically DSL users only) see page 34 ■ ISP provides configuration dynamically (via DHCP) see page 35 ■...
  • Page 35 Accessing the Wizard 3 Enter your PPP over Ethernet service name in the PPPoE Service Name text box. Do not enter anything in this box if your ISP does not require a service name. 4 Enter the MTU value supplied by your ISP in the MTU text box. If your ISP has not supplied an MTU value, leave this at the default value.
  • Page 36 4: R HAPTER UNNING THE ETUP IZARD Figure 19 Clone MAC Address Screen 3 If your ISP requires an assigned MAC address, select Yes, I would like to enter a MAC address manually and enter the values for a MAC address if required (Figure 19).
  • Page 37 Accessing the Wizard 4 Enter your ISP Router address in the Internet (ISP) Gateway Address text box. 5 Enter your primary DNS address in the Primary DNS Address text box. 6 Enter your secondary DNS address in the Secondary DNS Address text box.
  • Page 38 4: R HAPTER UNNING THE ETUP IZARD 6 Select an idle time from the Maximum Idle Time drop-down list. This is the amount of time without Internet activity that you want to allow before the Router ends the PPTP session. 7 Check all of your settings, and then click Next.
  • Page 39 Accessing the Wizard L2TP Mode Figure 23 L2TP Mode Screen To set up the Router for use with an L2TP connection, use the following procedure: 1 Enter your L2TP server address in the L2TP Server Address text box. 2 Enter your L2TP user name in the L2TP User Name text box. 3 Enter your L2TP password in the L2TP Password text box.

  • Page 40: Lan Settings

    4: R HAPTER UNNING THE ETUP IZARD LAN Settings Figure 24 LAN IP Address Screen This screen displays a suggested LAN IP address and subnet mask of the Router. It also allows you to change the IP address and subnet mask. DHCP The Router contains a Dynamic Host Configuration (DHCP) server that can automatically configure the TCP/IP settings of every computer on...

  • Page 41: Wireless Settings

    Router to automatically select an available channel when first powered on. The Service Area Name default for 3Com products is “3Com”. Up to 32 (case sensitive) characters can be entered for the Service Area Name. 3Com strongly recommends that you change the SSID to something other than the default.

  • Page 42: Summary

    Figure 27 Configuration Summary Screen When you complete the Setup Wizard, a configuration summary will display. 3Com recommends that you verify the configuration information of the Router and then print this page for your records. Click Finish to display the Wizard completed screen, shown in...
  • Page 43 Accessing the Wizard Figure 28 Wizard Completed Screen If you have made changes to the LAN Settings or wireless configuration options, you may need to reconfigure the computer you are using in order to make contact with the Router again. Your Router is now configured and ready for use.
  • Page 44 4: R HAPTER UNNING THE ETUP IZARD...

  • Page 45: Router Configuration

    OUTER ONFIGURATION Navigating This chapter describes all the screens available through the Router Through the Router configuration pages, and is provided as a reference. To get to the Configuration configuration pages, browse to the Router by entering the URL in the Pages location bar of your browser.

  • Page 46: Option Tabs

    Router. Support/Feedback — contains a comprehensive online help system ■ and allows you to provide 3Com with feedback on your Router. Option Tabs Each corresponding menu page may also provide sub-sections which are accessed through the use of tabs (see Figure 29 for example).

  • Page 47: Password

    Welcome Screen The Notice Board is used to display configuration warning messages. For example, you would be warned if you had disabled wireless networking or wireless encryption. Password Figure 30 Password Screen Changing the Administration Password You can change the password to prevent unauthorized access to the Administration System.

  • Page 48: Wizard

    5: R HAPTER OUTER ONFIGURATION Wizard Figure 31 Wizard Screen Click WIZARD... to launch the configuration wizard. 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 32 Unit Configuration Screen...

  • Page 49: Dhcp Clients List

    IP Pool Start Address, or the IP Pool End Address, or both. 4 If you use 3Com NBX telephones, enter the IP address of the NBX call processor at 3Com NBX Call Processor.
  • Page 50 5: R HAPTER OUTER ONFIGURATION IP address — The Internet Protocol (IP) address issued to the client ■ machine. Host Name — The client machine’s host name, if configured. ■ MAC Address — The Media Access Control (MAC) address of the ■...

  • Page 51: Wireless Settings

    Fixed Association. Wireless Settings The Wireless Settings menu provides options described in the following sections. To improve the security of your wireless network, 3Com recommends that you: 1. Change the SSID from its default value - see page 53 2. Enable Encryption - see page 54 3.

  • Page 52: Configuration

    5: R HAPTER OUTER ONFIGURATION Configuration Figure 35 Configuration Screen Enable Wireless Networking Use this check box 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.
  • Page 53 The Service Area Name may also be referred to as “ESSID” depending on your networking vendor. By default the Router uses the name “3Com”. 3Com recommends that you change the default name.

  • Page 54: Encryption

    The presence of an 11b device in your network can adversely affect the performance of an 11g device, such as the Router. Nitro Mode ensures that the effects of an 11b device are minimized. 3Com recommends that you enable Nitro Mode if you have one or more 11b devices in your network.
  • Page 55 Wireless Settings The pre-shared key is used to start the dialog between the Router and the client. During this dialog, a new key is agreed, making it more difficult to eavesdrop on wireless networks encrypted using WPA, than those encrypted using WEP. To use a RADIUS Server to authenticate each user before they join the ■...
  • Page 56 5: R HAPTER OUTER ONFIGURATION 6 Select the Modify button to save the changes and return to the Encryption screen, or select Close to exit without saving the changes. 7 If required, repeat steps 2 to 6 for a Secondary RADIUS Server. 8 Click Apply to generate the key.

  • Page 57: Configuring Wep Encryption

    Wireless Settings Using Pre-Shared Passphrase Figure 38 WPA Encryption Screen - Pre-Shared Passphrase To set up Pre-Shared Passphrase as the WPA Type: 1 Select Pre-Shared Passphrase from the WPA Type drop-down box. The screen shown in Figure 38 displays. 2 Enter a phrase of between 8 and 63 characters in length in the Passphrase field.
  • Page 58 5: R HAPTER OUTER ONFIGURATION Encryption Keys Figure 39 128 bit Encryption Keys Screen - WEP configuration Figure 40 40 bit/64 bit Encryption Keys Screen - WEP Configuration A Key is a hexadecimal (0-9, A-F) number used to encrypt and decrypt the data.
  • Page 59 4 Keys. You can leave a string blank provided this Key is not selected as the Active Transmit Key. Passphrase - This is another common method and similar to the 3Com ■ Encryption string. In 64 bit WEP, the passphrase will generate 4 different keys.

  • Page 60: Connection Control

    5: R HAPTER OUTER ONFIGURATION 3 Select the Active Transmit Key, which is the key the Router uses when it transmits. You can change the selected key periodically to increase the security of your network. Some wireless adapters have only one key available on their WEP configuration page.
  • Page 61 Wireless Settings Authorized Wireless PCs Figure 42 Connection Control Detail Screen To create a list of Wireless computers that can access the Router: 1 Select the MAC addresses of the Wireless PC(s) for which you want to allow access. To select multiple MAC addresses, hold down the Ctrl key while clicking on the addresses.

  • Page 62: Client List

    5: R HAPTER OUTER ONFIGURATION Modifying a MAC Address To modify a MAC address from the Connection Control screen: 1 Click on the MAC address to be modified. An example list is shown in Figure 2 Modify the MAC address. 3 Press Apply to accept the changes.

  • Page 63: Wds

    Wireless Settings The Wireless Client List provides details on the devices that are connected to the Wireless LAN. The list is only created when Wireless Networking is enabled. For each device that is connected to the Wireless LAN, the MAC address and Connection Speed of that device is displayed.

  • Page 64: Profile

    ONFIGURATION Profile Figure 46 Profile Screen Some 3Com Wireless Network Adapters allow you to import Wireless configurations via a ‘profile’. The Router can generate a profile 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 Router ■...

  • Page 65: Internet Settings

    Internet Settings can be copied on to another PC and imported into the 3Com Wireless Network Adapter. For instructions on how to import a profile, refer to the User Guide that accompanies your 3Com Wireless Network Adapter(s). If, once the profile is imported, the Wireless Network Adapter cannot...

  • Page 66: Connection To Isp

    5: R HAPTER OUTER ONFIGURATION When you install the Router, you will not need to use the PPPoE software on your PC. 4 PPTP (DSL or Cable) PPTP is only used by some European providers. If the installation instructions that accompany your modem ask you to setup a dialup connection using a PPTP VPN tunnel then select this option.
  • Page 67 Internet Settings Static IP Address Figure 47 Connection Parameters Screen - Static IP To setup the Router for use with a Static IP address connection: 1 Select Static IP Address (to be specified manually) in the IP Allocation Mode field (Figure 47).
  • Page 68 5: R HAPTER OUTER ONFIGURATION Dynamic IP Address Figure 48 Connection Parameters Screen - Dynamic IP If this mode is selected, your IP Address, Subnet Mask, and DNS Address will be obtained automatically from your ISP. They are not displayed on this screen, but may be viewed on the Status screen (click on Status and Logs on the left hand menu bar).
  • Page 69 Internet Settings Use this PC’s MAC address - This field is automatically filled in with the ■ MAC address of the PC you are using to configure the Router. You should use this address only if you were previously using this computer to connect directly to your modem.
  • Page 70 5: R HAPTER OUTER ONFIGURATION 4 Enter your PPP over Ethernet user name in the PPPoE User Name text box. 5 Enter a password in the PPPoE Password text box. 6 Enter your PPP over Ethernet service name in the PPPoE Service Name text box.
  • Page 71 Internet Settings To setup the Router for use with a PPTP connection, use the following procedure: 1 Select PPTP (used by some European providers) in the IP Allocation Mode field. (Figure 2 Enter your PPTP server address in the PPTP Server Address text box (this is typically the address of your modem).
  • Page 72 5: R HAPTER OUTER ONFIGURATION L2TP Figure 51 L2TP Setup Screen Check with your ISP to make sure they support L2TP. To set up the Router for use with an L2TP connection, use the following procedure: 1 Select L2TP (used by some European providers) in the IP Allocation Mode field.

  • Page 73: Firewall

    Firewall Check the Get IP by DHCP check box if you want to obtain the IP ■ information from a DHCP Server on the network. With this check box enabled, you can click Release to release the WAN IP Address for the Router, or click Renew to renew the current WAN IP Address, using DHCP.
  • Page 74 5: R HAPTER OUTER ONFIGURATION feature should be used only if the Virtual Server or Special Applications options do not provide the level of access needed for certain applications. To configure one of your computers as a DMZ host, enter the last digit(s) of the IP address of the computer in the IP Address of DMZ Host text box, and then click Apply.

  • Page 75: Special Applications

    Firewall Figure 54 Custom Setup Screen Click Add to return to the Virtual Server Settings screen. 4 Click Apply to save the settings. The port numbers are specified using a comma-separated list, with hyphens to denote port number ranges. So for example, entering 2, 3, 5-7 would cause ports 2, 3, 5, 6, and 7 to be activated.
  • Page 76 5: R HAPTER OUTER ONFIGURATION trigger port and incoming port(s), where traffic on the trigger port tells the firewall to open the incoming ports. Each defined Special Application only supports a single computer user, and up to 10 Special Applications can be defined. Any incoming ports opened by a Special Application trigger will be closed after five minutes of inactivity.

  • Page 77: Pc Privileges

    Firewall Figure 57 Other Applications Setup Screen Click Add to save your settings. 3 Click Add in the Special Application Settings screen (Figure 56), to save the configuration. Only one computer on your network can use the special application at any one time.
  • Page 78 5: R HAPTER OUTER ONFIGURATION To use access control for all computers: 1 Click PCs access authorized services only. 2 Select All PCs to set up the access rights for all computers connected to the Router. The screen shown in Figure 59 displays.
  • Page 79 Firewall schedule, check the appropriate check box for each day you want to allow access, and enter the permitted access times for each day in 24-hour clock format. For example, to allow access Monday through Friday between 9 am and 5 pm, check the check boxes for Mon, Tue, Wed, Thu and Fri, and enter 09:00 and 17:00 in the text boxes next to each of these days.

  • Page 80: Url Filter

    5: R HAPTER OUTER ONFIGURATION allow access, and enter the permitted access times in 24-hour clock format. For example, to allow access Monday through Friday between 9 am and 5 pm, check the check boxes for Mon, Tue, Wed, Thu and Fri, and enter 09:00 and 17:00 in the text boxes next to each of these days.
  • Page 81 Firewall To filter a specific site, enter the URL for that site. For example, to stop your users from browsing a site called www.badsite.com, enter www.badsite.com or badsite.com in one of the fields. If badsite.com has multiple sub-domains, such as this.badsite.com and that.badsite.com then you can either: Block them individually by entering this.badsite.com in one field ■...
  • Page 82 5: R HAPTER OUTER ONFIGURATION Figure 62 URL Filter Screen showing Allow List To allow a specific site, enter the URL for that site. For example, to let your users browse a site called www.goodsite.com, enter www.goodsite.com or goodsite.com in one of the fields. If goodsite.com has multiple sub-domains, such as this.goodsite.com and that.goodsite.com then you can either:...

  • Page 83: Content Filter

    You can subscribe to the 3Com Content Filter Service, which enables you to block or allow the URLs of a number of pre-defined categories. The Router comes with a 14-day free trial of the 3Com Content Filter Service. To activate the 14-day free trial of the service, you must first register your Router at .

  • Page 84: Spi

    5: R HAPTER OUTER ONFIGURATION To activate Content Filtering: 1 Select Firewall from the main menu, then select the Content Filter tab. The Content Filter screen displays (Figure 63). Figure 63 Content Filter Screen 2 Make sure the Enable Content Filter check box is checked. 3 Select the Content Filter Server that you require from the drop-down list.
  • Page 85 Firewall 1 Select Firewall from the main menu, then select the SPI tab to display the SPI screen (Figure 64 Figure 65): Figure 64 SPI Screen - upper section Figure 65 SPI Screen - lower section Intrusion Detection Feature The Intrusion Detection feature limits access for incoming traffic at the WAN ports.
  • Page 86 5: R HAPTER OUTER ONFIGURATION 3 If required, check the Enable RIP defect check box. This feature stops unacknowledged packets from accumulating in the input queue. Stateful Packet Inspection 4 The Stateful Packet Inspection section displays a list of traffic types. If you leave the check box for a traffic type blank, this traffic type is blocked.

  • Page 87: System Tools

    System Tools DoS Detect Criteria 15 In the Total incomplete TCP/UDP sessions HIGH text box, enter the number of unestablished sessions that will cause the software to start deleting half-open sessions. The default is 300. 16 In the Total incomplete TCP/UDP sessions LOW text box, enter the number of unestablished sessions that must be reached before the software stops deleting half-open sessions.

  • Page 88: Restart

    5: R HAPTER OUTER ONFIGURATION Restart Figure 66 Restart Screen If your Router is not operating correctly, you can choose to restart the Router by selecting Restart the Router, simulating the effect of power cycling the unit. No configuration information will be lost but the log files will be erased.

  • Page 89: Configuration

    System Tools 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 Day Light savings box, and then click Apply (Figure 67).

  • Page 90: Upgrade

    Figure 69 Upgrade Screen The Upgrade facility allows you to install on the Router any new releases of system software that 3Com may make available. To install new software, you first need to download the software from the 3Com support web site to a folder on your computer. Once you have done this, select Browse to tell your web browser where this file is on your computer, and then click Apply.

  • Page 91: Advanced

    Advanced The upgrade procedure can take up to two minutes, and is complete when the Alert LED has stopped flashing and is permanently off. Make sure that you do not interrupt power to the Router during the upgrade procedure; if you do, the software may be corrupted and the Router may not start up properly afterwards.

  • Page 92: Rip

    5: R HAPTER OUTER ONFIGURATION Gateway - the gateway used to route data to the network specified by ■ the network address. The Router supports the Routing Information Protocol (RIP). RIP allows you to set up routing information on one RIP enabled device, and have that routing information replicated to all RIP enabled devices on the network.
  • Page 93 2 Select either 1 (for RIPv1) or 2 (for RIPv2) from the Version drop-down list. 3Com recommends that you use RIPv1 if there is any RIP enabled device on your network that does not support RIPv2. In all other case, select RIPv2.

  • Page 94: Routing Table

    5: R HAPTER OUTER ONFIGURATION Routing Table Select the Routing table tab to display routing information used by the Router. The information is displayed in the format shown in Figure 73 Figure 73 Routing Table screen DDNS Dynamic Domain Name Server (DDNS) enables you to map a static domain name to a dynamic IP address.
  • Page 95 Advanced To set up DDNS: 1 Select Advanced from the main menu, then select the DDNS tab. The DDNS screen displays (Figure 74). Figure 74 DDNS screen 2 Select a DDNS Service provider from the drop-down list. This can be either TZO.com or DynDNS.org.

  • Page 96: Security

    5: R HAPTER OUTER ONFIGURATION 4 In the Refresh Time box, enter how often you want the service to automatically refresh, in days. The default is three days. 5 Click Apply to make this service active. Security Select Security to display the Security screen (Figure 75).
  • Page 97 Advanced 3Com recommends that you leave this feature disabled for maximum security. Allow PING from the Internet - PING is a utility, which is used to ■ determine whether a device is active at the specified IP address. PING is normally used to test the physical connection between two devices, to ensure that everything is working correctly.

  • Page 98: Status And Logs

    5: R HAPTER OUTER ONFIGURATION address of the Router. You may then login using the administration password. Your Internet IP address can be found at the bottom of the screen. See Figure Status and Logs Selecting Status and Logs from the main menu displays the Status, Usage, and Logs screens in your Web browser window.

  • Page 99: Usage

    Status and Logs Figure 77 Status Screen - lower section Usage Usage displays an approximate count of the traffic since the Router was last reset. (Figure The counts are approximate and should be used as a guide only. Contact your ISP for accurate logging information. Figure 78 Usage Screen...

  • Page 100: Logs

    5: R HAPTER OUTER ONFIGURATION Logs Logs will allow you to view both the normal events, and security threats logged by the Router. Figure 79 Logs Screen You may be asked to refer to the information on the Status and Logs screens if you contact your supplier for technical support.

  • Page 101: Feedback

    80). Feedback Figure 81 Feedback Screen Selecting the Feedback option displays the Feedback screen and allows you to provide feedback to 3Com on the operation of your Router (Figure 81). This screen should not be used to obtain technical support.
  • Page 102 5: R HAPTER OUTER ONFIGURATION...

  • Page 103: Troubleshooting

    ROUBLESHOOTING Basic Connection Check that the Router is connected to your computers and to the ■ Checks cable/DSL modem, and that all the equipment is powered on. Check that the LAN Status and Cable/DSL Status LEDs on the Router are illuminated, and that any corresponding LEDs on the cable/DSL modem and the NIC are also illuminated.

  • Page 104: Connecting To The Internet

    6: T HAPTER ROUBLESHOOTING Connections tab and click on the LAN Settings button at the bottom. Make sure that the Proxy Server option is unchecked. If you cannot browse to the Router, use the winipcfg utility in ■ Windows 95/98/ME to verify that your computer has received the correct address information from the Router.

  • Page 105: Forgotten Password And Reset To Factory Defaults

    Forgotten Password and Reset to Factory Defaults Forgotten Password If you can browse to the Router configuration screen but cannot log on and Reset to because you do not know or have forgotten the password, follow the Factory Defaults steps below to reset the Router to it’s factory default configuration. CAUTION: All your configuration changes will be lost, and you will need to run the configuration wizard again before you can re-establish your Router connection to the Internet.
  • Page 106 6: T HAPTER ROUBLESHOOTING If you have a wired and a wireless NIC in the same computer, ensure ■ that the wired NIC is disabled. Check the status of the Router Wireless LED, it should be lit if wireless ■ is enabled and will flash when there is wireless activity.

  • Page 107: Replacement Power Adapters

    If the Power Adapter OK LED is lit but the Power LED is unlit then ■ there may be a fault with your unit. Contact 3Com Technical Support. Check that you are using the correct power adapter for your Router.

  • Page 108: Alert Led

    If the Alert LED comes on continuously again, then a fault has been detected. Locate the copy of the Router software on the accompanying CD-ROM or 3Com web site http://www.3com.com ) and upload it to the Router to see if this clears the fault (refer to “Recovering from Corrupted Software”...

  • Page 109: Frequently Asked Questions

    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 Cable/DSL modem and all your computers, except for the one computer with the software image.
  • Page 110 Internet can connect to, but this is not a recommended configuration. Where can I download software updates for the Router? Updates to the Router software are posted on the 3Com support web site, accessible by visiting: http://www.3com.com What other online resources are there? The 3Com Knowledgebase at: http://knowledgebase.3com.com...

  • Page 111: Using

    SING ISCOVERY Running the 3Com provides a user friendly Discovery application for detecting the Discovery Router on the network. Application Windows Installation (95/98/2000/Me/NT) 1 Insert the Router CD-ROM in the CD-ROM drive on your computer. A menu will appear; select Router Discovery.
  • Page 112 A: U PPENDIX SING ISCOVERY Figure 83 Discovered Router Screen Figure 84 shows an example Discovered Devices screen. Highlight the Cable/DSL Router by clicking on it, and press Next. Figure 84 Discovery Finish Screen 4 Click on Finish to launch a web browser and display the login page for the Router.

  • Page 113: Ip Addressing

    IP A DDRESSING The Internet The Internet protocol suite consists of a well-defined set of Protocol Suite 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.
  • Page 114 B: IP A PPENDIX DDRESSING 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.

  • Page 115: How Does A Device Obtain An Ip Address And Subnet Mask

    How does a Device Obtain an IP Address and Subnet Mask? This type of IP Address operates on a subnet mask of ‘255.255.0.0’. Table 5 for an example about how a network (only four computers represented) and a Router might be configured. Table 5 IP Addressing and Subnet Masking Device IP Address...
  • Page 116 B: IP A PPENDIX DDRESSING 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.

  • Page 117: Technical Specifications

    ECHNICAL PECIFICATIONS This section lists the technical specifications for the OfficeConnect Wireless 11g Cable/DSL Router. Wireless 11g Interfaces Cable/DSL Router Cable/DSL modem connection — 10Mbps/100Mbps dual speed Ethernet port (10BASE-T/100BASE-TX) 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...
  • Page 118 C: T PPENDIX ECHNICAL PECIFICATIONS Encryption: 40/64 bit WEP, 128 bit WEP, WPA Maximum clients: 128 O/P Power 18dBm Operating Temperature 0 °C to 40 °C (32 °F to 105 °F) Power 7VA, 23.9 BThU/hr Humidity 0% to 90% (non-condensing) humidity Dimensions Width = 220 mm (8.7 in.) ■...
  • Page 119 systems. RSS-210 Environmental: EN 60068 (IEC 68) *See “FCC Statement” page 140 for conditions of operation. System Requirements Operating Systems The Router will support the following Operating Systems: Windows 95/98 ■ Windows NT 4.0 ■ Windows ME ■ Windows 2000 ■...
  • Page 120 C: T PPENDIX ECHNICAL PECIFICATIONS...

  • Page 121: Safety Information

    AFETY NFORMATION 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.
  • Page 122 D: S PPENDIX AFETY NFORMATION WARNING: 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 sockets. Only connect RJ-45 data connectors to these sockets. Wichtige Sicherheitshinweise VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen Sicherheit befolgen müssen.
  • Page 123 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.
  • Page 124 D: S PPENDIX AFETY NFORMATION AVERTISSEMENT: 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. AVERTISSEMENT: Il n’y a pas de parties remplaceables par les utilisateurs ou entretenues par les utilisateurs à...

  • Page 125: Nd Ser Software License Agreement

    Subject to the restrictions set forth herein, the Software is licensed to be used on any workstation or any network server owned by or leased to you, for your internal use, provided that the Software is used only in connection with this 3Com product. You may reproduce and provide one (1) copy of the Software and Documentation for each such workstation or network server on which the Software is used as permitted hereunder.
  • Page 126 The Software is delivered as ìCommercial Computer Softwareî 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.

  • Page 127: Isp Information

    ISP I NFORMATION Information Regarding Popular ISPs WAN Types Characteristics Popular ISPs Dynamic IP Cable modem ISP, non-hostname MediaOne, RoadRunner, based. Need to clone the MAC Optimum Online, Time Warner, (Clone MAC) address in the Advanced tab of Charter, Adelphia, Metrocast. the Internet Settings page.
  • Page 128 F: ISP I PPENDIX NFORMATION Static DSL Modem, always on. Need to CableSpeed, Cnet, Direct Link, enter ALL IP information from ISP Drizzle, DSL Extreme, Earthlink (DSL) in the Static IP address section of Wireless, Fast Point, Flashcom, the Internet Settings page. GTE-WhirlWind, Heavenet, HSA Corp, I-55, InterAccess, LinkLine, Mission, Nauticom, NAS, Omitel,...

  • Page 129: Glossary

    LOSSARY 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.
  • Page 130 LOSSARY configure to use the best 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.
  • Page 131 DNS Server Address DNS stands for Domain Name System, which allows Internet host computers to have a domain name (such as 3com.com) and one or more IP addresses (such as 192.34.45.8). A DNS server keeps a database of host computers and their respective domain names and IP addresses, so that when a domain name is requested (as in typing “3com.com”...
  • Page 132 LOSSARY Router A device that acts as a central hub by connecting to each computer's network interface card and managing the data traffic between the local network and the Internet. Half Duplex A system that allows packets to transmitted and received, but not at the same time.
  • Page 133 LOSSARY Internet Service Provider. An ISP is a business that provides connectivity to the Internet for individuals and other businesses or organizations. Local Area Network. A network of end stations (such as PCs, printers, servers) and network devices (hubs and switches) that cover a relatively small geographic area (usually not larger than a floor or building).
  • Page 134 LOSSARY PPTP Point-to-Point Tunneling Protocol is a method of secure data transmission between two remote sites over the internet. Routing Information Protocol. RIP allows an administrator to set up routing information on one RIP enabled device, and have that routing information replicated to all RIP enabled devices on the network.
  • Page 135 LOSSARY TCP/IP Transmission Control Protocol/Internet Protocol. This is the name for two of the most well-known protocols developed for the interconnection of networks. Originally a UNIX standard, TCP/IP is now supported on almost all platforms, and is the protocol of the Internet. TCP relates to the content of the data travelling through a network —...
  • Page 136 LOSSARY Wi-Fi Wireless Fidelity. This is the certification granted by WECA to products that meet their interoperability criteria. (see also 802.11b, WECA) Wireless Client The term used to describe a desktop or mobile PC that is wirelessly connected to your wireless network Wireless LAN Service Another term for ESSID (Extended Service Set Identifier) Area...

  • Page 137: Index

    NDEX dynamic IP address 65 NDEX encryption 54 WEP 54 WPA 54 Firewall 73 Access Rights 79 Intrustion Detection 85 Addresses SPI 84 IP 113 Forgotten Password 105 Administration Password 32, 47 Advanced 91 DDNS 94 RIP 92 Internet routing table 94 addresses 113 security 96 Internet Addressing Mode 33...
  • Page 138 NDEX wireless 14 Upgrade 90 Nitro Mode 54 URL Filter 80 Password 29, 47 Virtual Servers 73, 74 PC Privileges 77 PING 97 PPPoE 21, 28, 34, 65, 69 WAN 33 PPTP 21, 66, 70 WDS 63 Profile 64 Web Proxy 28 Wireless authorized PCs 61 Remote Administration 97...

  • Page 139: Regulatory

    EGULATORY OTICES FOR THE /DSL IRELESS ABLE OUTER Channels Use of the Wireless 11g Cable/DSL 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. Table 5 below details the channels permitted by the local regulatory agencies:...
  • Page 140 FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules, and the Canadian Department of Communications Equipment Standards entitled, “Digital Apparatus,” ICES-003. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 141 Information to the If this equipment does cause interference to radio or television reception, User 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.
  • Page 142 Exposure to Radio Frequency Radiation: The radiated output power of the 3Com OfficeConnect Wireless 11g Cable/DSL Router is far below the FCC radio frequency exposure limits. Nevertheless, the 3Com OfficeConnect Wireless 11g Cable/DSL Router shall be used in such manner that the potential for human contact during normal operation is minimized.

  • Page 143: Industry Canada - Class B

    Potential RF CAUTION: To prevent radio interference to the licensed service, this Interference device is intended to be operated indoors and away from windows to (Canada) provide maximum shielding. Equipment (or it's transmit antenna) that is installed outdoors is subject to licensing. Industry Canada - This digital apparatus does not exceed the Class B limits for radio noise Class B...
  • Page 146 3Com Corporation, Corporate Headquarters, Copyright © 2004 3Com Corporation. All rights reserved. 350 Campus Drive, Marlborough, MA 3Com and OfficeConnect are registered trademarks of USA 01752-3064. 3Com Corporation. All other company and product names may be trademarks of their respective companies.

This manual is also suitable for:

Officeconnect 3crwe554g72tu

Table of Contents