3Com 3CRWER300-73 User Manual
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3Com 3CRWER300-73 User Manual

Wireless 11n cable/dsl firewall router
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Wireless 11n Cable/DSL Firewall Router
User Guide
WL-602
3CRWER300-73
http://www.3Com.com/
Part No. 10016790 Rev. AA
Published July 2008

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  • Page 1 Wireless 11n Cable/DSL Firewall Router User Guide WL-602 3CRWER300-73 http://www.3Com.com/ Part No. 10016790 Rev. AA Published July 2008...
  • 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, satisfactory 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 Wireless 11n Cable/DSL Firewall Router Router Advantages Package Contents Minimum System and Component Requirements Physical Features NSTALLING THE OUTER Introduction Safety Information Positioning the Router Using the Rubber Feet Wall Mounting Mounting Instructions for Cement Walls...
  • Page 4 Windows XP Macintosh Disabling PPPoE and PPTP Client Software Disabling Web Proxy UNNING THE ETUP Accessing the Router using the 3Com Detect Application Running the 3Com Detect Application Accessing the Setup Wizard Wizard - Change Password Wizard - Time and Time Zone...
  • Page 5 Internet Settings Clone MAC address Firewall Special Applications Virtual Servers PC Privileges Schedule Rule URL Filter Advanced Security VLAN Static Routes DDNS SNMP Syslog Proxy ARP QoS Settings Traffic mapping System Tools Restart Router Configuration Upgrade Time Zone Ping Traceroute DNS Lookup Diagnostic Status and Logs...
  • Page 6 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 PECIFICATIONS 3Com Wireless 11n Cable/DSL Firewall Router Standards...
  • Page 7 AFETY NFORMATION OFTWARE ICENSE BTAINING UPPORT FOR Register Your Product to Gain Service Benefits Solve Problems Online Purchase Extended Warranty and Professional Services Access Software Downloads Contact Us Telephone Technical Support and Repair LOSSARY EGULATORY OTICES NDEX GREEMENT RODUCTS...

  • Page 9: About This Guide

    BOUT UIDE This guide describes how to install and configure the 3Com Wireless 11n Cable/DSL Firewall Router (3CRWER300-73). This guide is intended for use by those responsible for installing and setting up network equipment; consequently, it assumes a basic working knowledge of LANs (Local Area Networks) and Internet Routers.

  • Page 10: Conventions

    BOUT UIDE Conventions Table 1 Table 1 Notice Icons Table 2 Text Conventions Convention The words “enter” and “type” Keyboard key names Words in italics Table 2 list conventions that are used throughout this guide. Icon Notice Type Description Information note Information that describes important features or instructions.

  • Page 11: Feedback About This User Guide

    Installation Guide. This guide contains the instructions you need to install and configure your Router. Document title Document part number (on the title page) Page number (if appropriate) 3Com Wireless 11n Cable/DSL Firewall Router User Guide Part Number 10016790 Rev. AA Page 24 Feedback About This User Guide...
  • Page 12 BOUT UIDE...

  • Page 13: Ntroducing The Router

    Computer networks have proved to be one of the fastest modes of communication but, until recently, only large businesses could afford the networking advantage. Wireless 11n The 3Com Wireless 11n Cable/DSL Firewall Router is designed to provide Cable/DSL Firewall a cost-effective means of sharing a single broadband Internet connection Router amongst several wired and wireless computers.
  • Page 14 2), it becomes your connection to the Internet. Connections can be made directly to the Router, or to a 3Com Switch, expanding the number of computers you can have in your network. Figure 2 Example Network Using a Firewall Router...

  • Page 15: Router Advantages

    One power adapter for use with the Router Four rubber feet One Ethernet cable One CD-ROM containing this User Guide, copies of the quick install guide in various languages and the 3Com Detect application. Installation guide Support and Safety sheet Warranty sheet...

  • Page 16: Minimum System And Component Requirements

    1: I HAPTER NTRODUCING THE Minimum System Your Router requires that the computer(s) and components in your and Component network be configured with at least the following: Requirements ■ ■ ■ ■ ■ Physical Features The front panel of the Router contains a series of indicator lights (LEDs) that help describe the state of various networking and connection operations.
  • Page 17 1 Power LED (Illuminated Logo) White The 3Com logo serves as power OK indicator. This LED will light if the router is receiving power from the power adapter. If it is not lit check the power adapter connections. Refer to...
  • Page 18 1: I HAPTER NTRODUCING THE OUTER 6 WPS LED Blue WiFi Protected Setup (WPS) is a standard for easy and secure establishment of a wireless network, allowing wireless clients to connect securely to routers and access points. The WPS LED shows the status of the WPS function.
  • Page 19 The rear panel (Figure 4) of the Router contains one WPS button, four LAN ports, one WAN port, one WiFi on/off button, a reset button, and a power adapter socket. Figure 4 Router - Rear Panel 1 Wireless Antenna The antennas should be placed in a ‘V’ position when initially installed. CAUTION: Do not force the antennae beyond their mechanical stops.
  • Page 20 1: I HAPTER NTRODUCING THE 4 WAN Port RJ-45 port used to connect the Router with Cable/DSL modem. 5 WiFi On/Off button Use this button to turn on/turn off the wireless function. Press the button for 3 seconds. 6 Reset Button If you want to reset your Router to factory default settings, or cannot access the web management interface (for example, due to a lost password), then you may use this button.

  • Page 21: Nstalling The Router

    Introduction This chapter will guide you through a basic installation of the Router, including: ■ ■ ■ Safety Information Please note the following: WARNING: Please read the before you start. VORSICHT: Bitte lesen Sie den Abschnitt sorgfältig durch, bevor Sie das Gerät einschalten. AVERTISSEMENT: Veuillez lire attentivement la section importantes de sécurité...

  • Page 22: Using The Rubber Feet

    Router. Please be careful when you put 3COM Router on top of another unit, if the unit underneath is hot, this may impact the reliability of 3Com Router.

  • Page 23: Mounting Instructions For Wood Walls

    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 To communicate wirelessly with your Router, your wireless NIC should be set as follows: ■ ■ ■ This following figure shows a typical network configuration for 3Com Wireless 11n Cable/DSL Firewall Router. Figure 5 Network Configuration for the Router OUTER Encryption — none SSID —...

  • Page 25: Setting

    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 Figure 6 Local Area Properties Screen 6 Ensure that the options Obtain an IP address automatically, and Obtain DNS server address automatically are both selected as shown in Figure 7. Click OK. Figure 7 Internet Protocol (TCP/IP) Properties Screen 7 Restart your computer.

  • Page 27: Windows Vista

    Windows Vista 1 From the Windows Start Menu, select Settings > Network. 2 Click on Organize. Select Properties. 3 Click on Manage network > Connections. 4 Double click Local Area Connection. Select Properties and click continue. 5 A screen similar to Version 6,Version 4 (TCP/IPv6,v4) and click on Properties.

  • Page 28: Windows Xp

    3: S HAPTER ETTING Windows XP 1 From the Windows Start Menu, select Control Panel. 2 Click on Network and Internet Connections. 3 Click on the Network Connections icon. 4 Double click on LAN or High Speed Connection icon. A screen titled Local Area Connection Status will appear.

  • Page 29: Disabling Pppoe And Pptp Client Software

    Disabling PPPoE If you have PPPoE client software installed on your computer, you will and PPTP Client need to disable it. To do this: Software 1 From the Windows Start Menu, select Settings > Control Panel. 2 Double click on Internet Options. 3 Select the Connections Tab.
  • Page 30 3: S HAPTER ETTING OMPUTERS...

  • Page 31: Running The Setup Wizard

    The CD-ROM that comes with this Router contains, in addition to the Detect Application documentation, the 3Com Detect Application. To use 3Com Detect to connect to the Web interface of your Router, do the following: On the computer that is connected to your Router (either directly or on a network that is on the same subnet), insert the CD-ROM into its CD drive.
  • Page 32 UNNING THE ETUP IZARD Figure 11 3Com Detect Application If the computer has multiple network adapters, select the adapter that connects the computer to the network or the Router, click Next. You will then be offered the choice of searching the same subnet that your PC is on for a connected Router (default), or specifying an IP range.

  • Page 33: Accessing The Setup Wizard

    Figure 14 Router List Screen Accessing the Setup 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 6.0 or higher, Mozilla 1.2.1 or higher, or Apple’s Safari). To use the Setup Wizard: 1 Ensure that you have at least one computer connected to the Router.
  • Page 34 Apply. to channels from 1 to 11. firmware from the 3Com website (www.3com.com) which will enable operation on channels 12-13. You will be asked to verify your country before you can download the firmware what will enable the wider range of channels to be used.
  • Page 35 The Wizard will then launch automatically (refer to guided step by step through a basic setup procedure. if the Router has been configured previously, the Welcome screen will ■ appear (Figure 18). There are three tabs: Notice Board, Password and Wizard.

  • Page 36: Change Password

    4: R HAPTER UNNING THE ETUP The password screen allows you to change the current password and set the login time limit to the Router’s management interface. Figure 19 Password Screen 1 To change the current password, enter the password in the Current Password field.

  • Page 37: Time And Time Zone

    Figure 20 Change Password Screen Wizard - The Time and Time Zone screen allows you to set up the time for the Time and Time Zone Router. Figure 21 Time and Time Zone Screen 1 Select the correct base date and time. 2 If you want to automatically synchronize the Router with a public time server, check the Enable box in the Using Time Server (NTP) field.

  • Page 38: Wizard

    4: R HAPTER UNNING THE ETUP Wizard - The Connection Type screen allows you to set up the Router for the type Connection Type of Internet connection you have. Before setting up your connection type, have your account information from your ISP ready. Figure 22 Connection Type Screen Select a mode from the following: ■...
  • Page 39 Dynamic IP This mode is often used in cable connection when the ISP assigns IP address via DHCP. To set up the Router for use with a dynamic IP connection, use the following procedure: Figure 23 Host Name Screen 1 Host name is a name that some Internet Service Providers require for connection to their system.
  • Page 40 4: R HAPTER UNNING THE ETUP Static IP Use this option when you have a static IP assigned by your service provider. To set up the Router for use with a static IP connection, use the following procedure: Figure 24 Static IP Screen To assign a fixed IP address: 1 Enter your Internet IP address in the IP address assigned by your Service Provider field.
  • Page 41 PPPoE Mode PPPoE is often used for DSL connection. To set up the Router for use with a PPPoE (PPP over Ethernet) connection, use the following procedure: Figure 25 PPPoE Screen 1 Enter your user name in the Username field. 2 Enter your password in the Password field.
  • Page 42 4: R HAPTER UNNING THE ETUP PPTP Mode This mode allows a single computer to obtain the ISP assigned IP address via a PPTP Virtual Private Network connection (VPN). To set up the Router for use with a PPTP (Point to Point Tunneling Protocol) connection, use the following procedure: Figure 26 PPTP Screen 1 Enter the PPTP Server information.
  • Page 43 L2TP mode The Layer Two Tunneling Protocol (L2TP) provides a standard method for transporting the link layer of the Point-to-Point Protocol (PPP) between a dial-up server and a Network Access Server, using a network connection in lieu of a physical point-to-point connection. This mode is most often used in Israel.

  • Page 44: Setup Wizard - Lan Settings

    4: R HAPTER UNNING THE ETUP Setup Wizard - LAN The LAN Settings screen allows you to set the default IP address and Settings DHCP client IP range for the Router. Figure 28 The LAN Settings Screen 1 To change the Router’s default IP address, enter the new IP address in the IP Address field, and then enter the subnet mask in the Subnet Mask field.

  • Page 45: Wizard - Wireless Setting

    Wizard - Wireless The Wireless Settings screen allows you to set up the SSID and radio Setting channel used for the wireless connection. Figure 29 Wireless Setting Screen 1 Select the channel you want to use from the Channel drop-down menu. 2 Specify the SSID to be used by your wireless network in the SSID field.
  • Page 46 4: R HAPTER UNNING THE ETUP Security Mode Select the security mode, five options available: ■ ■ ■ ■ ■ Figure 30 Security Mode Screen IZARD Disabled: selecting this mode means no wireless security will be used. 64-bit WEP : see page 45 128-bit WEP: see page 46...
  • Page 47 WEP is the basic mechanism to transmit your data securely over the wireless network. Matching encryption keys must be setup on your Router and wireless client devices to use WEP. 3Com recommends to use stronger WPA/WPA2 security. Figure 31 64-bit WEP Screen To enable 64-bit WEP: 1 You can enter the 64-bit WEP key manually.
  • Page 48 WEP is the basic mechanism to transmit your data securely over the wireless network. Matching encryption keys must be set up on your Router and wireless client devices to use WEP. 3Com recommends to use stronger WPA/WPA2 security. Figure 32 128-bit WEP Screen...
  • Page 49 WPA-PSK (no server) WPA (Wi-Fi Protected Access) provides dynamic key changes and constitutes the best security solution. If your network does not have a RADIUS server. Select the no server option. Figure 33 WPA-PSK (no server) Screen 1 1 Select WPA-PSK (no server) from the WPA drop-down menu. 2 Select WPA mode from the drop-down menu, three modes are supported: WPA, WPA2, and Mixed mode.
  • Page 50 4: R HAPTER UNNING THE ETUP WPA (with Radius server) WPA (Wi-Fi Protected Access) provides dynamic key changes and constitutes the best security solution. This function requires that a RADIUS server is running on the network. Figure 34 WPA with Radius server Screen 1 Select WPA with RADIUS server from the Security Mode drop-down menu.

  • Page 51: Wizard - Configuration Summary

    Configuration will appear. Verify the configuration information of the Router and then Summary click Apply to save your settings. 3Com recommends that you print out this page for your records. Figure 35 Configuration Summary Screen Your Router is now configured and ready for use.
  • Page 52 4: R HAPTER UNNING THE ETUP IZARD...

  • Page 53: Onfiguring The Router

    Navigating This chapter describes all the screens available through the Router Through the Router configuration screens, and is provided as a reference. To get to the Configuration configuration screens, enter the Router’s default IP in the location bar of screens your browser.

  • Page 54: Lan Settings

    Specify the Starting and Ending IP Pool address. The default is Starting: 2 / Ending: 254. Specify the IP address Lease Time. The default is One day. Specify a local Domain Name. This field is optional. Specify the IP address of 3Com NBX call processor.

  • Page 55: Dhcp Clients List

    DHCP server will reserve the IP address for each computer. 5 Specify the Local Domain Name for your network (this step is optional). 6 Enter the IP address of the NBX Call Processor in the 3Com NBX Call Processor field (this step is optional).
  • Page 56 5: C HAPTER ONFIGURING THE ■ ■ ■ ■ ■ ■ The DHCP server will give out addresses to both wired and wireless clients. OUTER Host Name — The client machine’s host name, if configured. MAC Address — The Media Access Control (MAC) address of the client’s network card.

  • Page 57: Wireless Settings

    Wireless Settings The Wireless Settings screens allow you to configure the settings for the wireless connections. You can enable or disable the wireless connection for 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 58 5: C HAPTER ONFIGURING THE Configuration The Wireless Configuration Screen allows you to turn on/ turn off the wireless function, and set up basic wireless settings. you can also enable/disable the Wireless function using the WiFi on/off button at the back of the unit.

  • Page 59: Encryption

    6 Select whether your Router will operate in 11b mode only, 11g mode only, 11n mode only, or mixed mode from the Wireless Mode drop-down menu. If your network contains 11b, 11g, and 11n clients, select the mixed mode. If your network contains just one type of clients only, select 11b only, or 11g only, or 11n only, depending on your wireless network environment.
  • Page 60 WEP is the basic mechanism to transmit your data securely over the wireless network. Matching encryption keys must be setup on your Router and wireless client devices to use WEP. Note that 3Com recommends using WPA/WPA2 to secure your wireless connection.
  • Page 61 WEP is the basic mechanism to transmit your data securely over the wireless network. Matching encryption keys must be set up on your Router and wireless client devices to use WEP. Note that 3Com recommends using WPA/WPA2 to secure your wireless connection.
  • Page 62 5: C HAPTER ONFIGURING THE The WEP keys on each device on the wireless network must be identical. In 128-bit WEP mode, only one WEP key can be specified. 2 Click Apply. WPA-PSK (no server) WPA (Wi-Fi Protected Access) provides dynamic key changes and constitutes the best security solution.
  • Page 63 numbers. The key must be between 8 and 63 characters long and can include spaces and symbols. Each client that connects to the network must use the same key. 5 If you want the key that you enter to be shown on the screen as a series of asterisks (*), then check the Hide PSK checkbox.

  • Page 64: Wps

    5: C HAPTER ONFIGURING THE 4 Enter the IP address of the RADIUS server on your network into the RADIUS Server field. 5 Enter the port number that the RADIUS server is operating on in the RADIUS Port field. 6 Enter the key for the RADIUS server in the RADIUS Key field. 7 By default, the WPA keys are changed every hour, but if you want to change this setting, you can do so by specifying the required time in the Re-key Interval field.
  • Page 65 Wireless Settings and select the PIN method. You should get a 8-digit PIN number from the WPS utility. Enter that 8-digit PIN number on this screen and click Apply to activate this PIN method. Then the Router starts to negotiate the security with the WLAN clients and WPS LED will start flashing.

  • Page 66: Connection Control

    5: C HAPTER ONFIGURING THE Connection Control This feature is used to filter the clients based on their MAC addresses. Using this function, you can limit the access right of the wireless clients to this Router. Check the Enable MAC Address Filtering checkbox, the Connection Control screen will appear.

  • Page 67: Client List

    Wireless Settings Client List You can view the list of all wireless clients that are connected to the Router. Figure 48 Client List Screen Click Refresh to update the list. Wireless Multimedia (WMM) mode, which supports devices that meet the 801.11e QBSS standard.
  • Page 68 5: C HAPTER ONFIGURING THE Access Categories – WMM defines four access categories (ACs): voice, video, best effort, and background. These categories correspond to traffic priority levels and are mapped to IEEE 802.1D priority tags. The direct mapping of the four ACs to 802.1D priorities is specifically intended to facilitate inter operability with other wired network QoS policies.
  • Page 69 Wireless Settings CWMin (Minimum Contention Window) – The initial upper limit of the random backoff wait time before wireless medium access can be attempted. The initial wait time is a random value between zero and the CWMin value. Specify the CWMin value in the range 0-15 microseconds. Note that the CWMin value must be equal or less than the CWMax value.

  • Page 70: Wds

    5: C HAPTER ONFIGURING THE The Router supports WDS (Wireless Distribution System). WDS enables one or more Access Points to rebroadcast received signals to extend range and reach, though this can affect the overall throughput of data. Note that WDS implementation can vary from product to product. Hence there is no guarantee that different products will interoperate.
  • Page 71 4 APs can be added to the AP MAC Address table, and click Apply. Here is an example of how to setup two units of 3Com Router over WDS. Note that when setting up two units of 3Com Router, you should disable the DHCP function on one of the units.
  • Page 72 5: C HAPTER ONFIGURING THE OUTER Figure 52 First Router add WDS Screen Access the Web UI of the second Router, repeat the above steps to add the first Router to the WDS table (see Figure 53). Figure 53 Second Router add WDS Screen...

  • Page 73: Advanced

    Advanced The Advanced screen allows you to configure detailed settings for your wireless connection. Please note that you should not change this settings unless you are an expert user. There are six parameters that you can configure: Figure 54 Wireless Advanced Setting Screen Beacon Interval: this represents the amount of time between beacon ■...
  • Page 74 5: C HAPTER ONFIGURING THE OUTER network and will not be able to communicate with each other. You may want to utilize this feature if you have many guests that frequently connect to your wireless network.

  • Page 75: Internet Settings

    Internet Settings You can configure the settings for your WAN port connection. This feature is used to configure the parameters for your Internet connection. The information necessary to complete these screens should be obtained from your ISP. Check with your ISP first to find out what type of connection you should choose.
  • Page 76 5: C HAPTER ONFIGURING THE Dynamic IP You can configure the Router to obtain an IP address automatically from a DHCP server. Figure 56 Dynamic IP Screen 1 Select Dynamic IP from the Internet sharing protocol drop-down menu. 2 If the ISP requires you to input a Host Name, type it in the Host Name field.
  • Page 77 Static IP If your Service Provider has assigned a fixed IP address, enter the assigned IP address information on the screen. Figure 57 Static IP Screen 1 Select Static IP from the Internet sharing protocol drop-down menu. 2 Enter your IP address in the IP address assigned by your service provider field.
  • Page 78 5: C HAPTER ONFIGURING THE PPPoE PPP over Ethernet, provides routing for multiple PCs, this mode is often used for the DSL connection. To configure this function correctly, you should obtain the information from your ISP. Figure 58 PPPoE Settings Screen 1 Select PPPoE from the Internet sharing protocol drop-down menu.
  • Page 79 PPTP If your ISP uses PPTP as the Internet connection protocol, setup the details on this screen. Figure 59 PPTP Screen 1 Select PPTP from the Internet sharing protocol drop-down menu. 2 Enter the PPTP Server information. 3 Enter the user ID in the User ID field. And enter the password assigned to you by your ISP in the Password field.
  • Page 80 5: C HAPTER ONFIGURING THE L2TP If your ISP uses L2TP as the Internet connection protocol, setup the details on this screen. This options is mostly used in Israel. Figure 60 L2TP Connection Screen 1 Select L2TP from the Internet sharing protocol drop-down menu. 2 Enter the L2TP Server information.

  • Page 81: Dns

    Internet Settings Domain Name Service (or Server) is an Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they're easier to remember. The Internet however, is really based on IP addresses. Every time you use a domain name, a DNS service must translate the name into the corresponding IP address.

  • Page 82: Clone Mac Address

    5: C HAPTER ONFIGURING THE Clone MAC address To configure the Hostname and Clone MAC Address information for your Router, select Internet Settings, then go to the Clone MAC address tab. Figure 62 Hostname and Clone MAC Address Screen 1 Some ISPs require a host name. If your ISP has this requirement, enter the host name in the Host Name field.

  • Page 83: Firewall

    (PoD) and Denial of Service (DoS) attacks. You can turn the firewall function off if needed. Turning off the firewall protection will not leave your network completely vulnerable to hacker attacks, but 3Com recommends that you leave the firewall enabled whenever possible.
  • Page 84 5: C HAPTER ONFIGURING THE To enable the firewall function: 1 Select the level of protection (High, Medium, or Low) that you desire from the Firewall level drop-down menu. 2 Click Apply. ■ ■ Figure 64 Low and Medium Level Firewall Protection Screen When abnormal network activity occurs, an alerting email will be sent out to you.
  • Page 85 Figure 65 High Level Firewall Protection Screen If you select high level of protection, you would have an option to configure additional parameters for the firewall. Fragmentation half-open wait - Configures the number of seconds ■ that a packet state structure remains active. When the timeout value expires, the Router drops the un-assembled packet, freeing that structure for use by another packet.
  • Page 86 5: C HAPTER ONFIGURING THE ■ ■ ■ ■ ■ ■ ■ ■ ■ OUTER Total incomplete TCP/UDP sessions HIGH - Defines the rate of new unestablished sessions that will cause the software to start deleting half-open sessions. Total incomplete TCP/UDP sessions LOW - Defines the rate of new unestablished sessions that will cause the software to stop deleting half-open sessions.

  • Page 87: Special Applications

    Special Applications Special Applications (port triggering) let you choose specific ports to be open for specific applications to work properly with the Network Address Translation (NAT) feature of the Router. Figure 66 Special Applications Screen A list of popular applications has been included to choose from. Select the application from the Popular Applications drop-down menu.

  • Page 88: Virtual Servers

    5: C HAPTER ONFIGURING THE Virtual Servers The Virtual servers feature allows you to route external (Internet) calls for services such as a web server (port 80), FTP server (Port 21), or other applications through your Router to your internal network. Since your internal computers are protected by a firewall, machines from the Internet cannot get to them because they cannot be 'seen'.

  • Page 89: Dmz

    3 Specify the public port that will be seen by clients on the Internet, and the LAN port which the traffic will be routed to. 4 You can enable or disable each Virtual Server entry by checking or unchecking the appropriate Enabled checkbox. 5 Click Apply to save the changes for each Virtual Server entry.

  • Page 90: Pc Privileges

    5: C HAPTER ONFIGURING THE address is not known, or if more than one PC on the Internet will need to access the DMZ PC, then set the Public IP Address to 0.0.0.0. In the default setting (line 1), Public IP address is set to 0.0.0.0 and it is automatically transformed by default WAN IP.
  • Page 91 To edit or delete specific existing filtering rules, click on Edit or Delete for the appropriate filtering rule. Figure 70 PC Privileges Add PC Screen 1 Enter a description in the Client PC Description field, and the IP address or IP address range into the Client PC IP Address fields.

  • Page 92: Schedule Rule

    5: C HAPTER ONFIGURING THE Schedule Rule The Router can be configured to restrict access to the Internet, email or other network services at specific days and times. Define the time in this screen, and define the rules in the PC Privileges screen (see Figure 71 Schedule Rule Screen 1 Click Add Rule to add a schedule rule (refer to Figure 72 Add Schedule Rule Screen...

  • Page 93: Url Filter

    URL Filter To configure the URL filter feature, use the table on the URL Filter screen to specify the Web sites (www.somesite.com) and/or keywords you want to filter on your network. For example, entering a keyword of xxx would block access to any URL that contains the string xxx.

  • Page 94: Advanced

    5: C HAPTER ONFIGURING THE Advanced The Advanced section allows you to set additional parameter details for the Router. You can configure: ■ ■ ■ ■ ■ ■ ■ ■ ■ Security Use the Security screen to set the advanced security settings for the Router.
  • Page 95 NAT — (Network Address Translation), NAT is the method by which ■ the Router shares the single IP address assigned by your ISP with the computers on your network. This function should only be disabled by advanced users, and if your ISP assigns you multiple IP addresses or you need NAT disabled for an advanced system configuration.
  • Page 96 5: C HAPTER ONFIGURING THE ■ ■ Before you enable this function, ensure that you have changed the factory default Administration Password. OUTER MSS Clamping — You might not be able to browse some Web sites or to send email messages that contain attachments from an Internet Connection Sharing client computer if your outbound connection is through a Windows XP-based Internet Connection Sharing host computer that uses Point-to-Point Protocol over Ethernet (PPPoE).

  • Page 97: Vlan

    VLAN A VLAN is a flexible group of devices that can be located anywhere in a network, but they communicate as if they are on the same physical segment. With VLANs, you can segment your network without being restricted by physical connections - a drawback of traditional network design.
  • Page 98 5: C HAPTER ONFIGURING THE Figure 75 VLAN Screen Click Add VLAN to create a new entry (see Figure 76 VLAN Profile Screen ■ ■ ■ ■ ■ Click Apply. OUTER Enter a description for your VLAN in the Description field. Enter the IP Address and subnet mask in the corresponding fields.

  • Page 99: Static Routes

    Static Routes You can configure static routes in this screen. You can setup a static route that will get all traffic with destination to business network to go through VPN tunnel and the rest outside of the VPN tunnel. Figure 77 Static Routes Screen To add a static route entry to the table, click Add (see To change an existing entry, click Edit.
  • Page 100 5: C HAPTER ONFIGURING THE ■ ■ Note that you should only confiqure either the Gateway information or select the Interface. After you have finished making changes to the table, click Apply. Here is an example of setting up a static route. ■...

  • Page 101: Rip

    4 In the Version field, select 1 or 2. 3Com recommends that you only use RIPv1 if there is an existing RIP-enabled device on your network that does not support RIPv2. In all other cases, you should use RIPv2.
  • Page 102 5: C HAPTER ONFIGURING THE 5 Use the Poison Reverse drop-down menu to enable or disable Poison Reverse on the Router. Enabling Poison Reverse on your Router allows it to indicate to other RIP-enabled devices that they have both routes that point to each other, preventing data loops.

  • Page 103: Ddns

    DDNS The Router provides a list of dynamic DNS providers for you to choose from. Dynamic Domain Name Server (DDNS) enables you to map a static domain name to a dynamic IP address. This function allows you to create a hostname that points to your dynamic IP or static IP address or URL. Before you set up DDNS, you must obtain an account, password or key and static domain name from your DDNS provider.

  • Page 104: Snmp

    5: C HAPTER ONFIGURING THE SNMP SNMP (Simple Network Management Protocol) allows remote management of your Router by a PC that has an SNMP management agent installed. Check the Enable SNMP box, the table will appear. Figure 82 SNMP Screen Enter the System Contact, System Name, and System Location information.

  • Page 105: Syslog

    You can configure your Router to send status messages to the SNMP management agent if a problem occurs on the network. To configure SNMP traps: 1 In the IP Address field, enter the IP address of the PC to which you want your Router to send status messages.

  • Page 106: Proxy Arp

    5: C HAPTER ONFIGURING THE Proxy ARP Proxy ARP is the technique in which one host, usually a Router, answers ARP requests intended for another machine. By “faking” its identity, the Router accepts responsibility for routing packets to the “real” or intended destination.

  • Page 107: Qos Settings

    QoS Settings The QoS (Quality of Service) function allows you to differentiate your network traffic and provide it with high-priority forwarding service. The bandwidth gap between LAN and WAN may significantly degrade performance of critical network applications, such as VoIP, gaming, and VPN.

  • Page 108: Traffic Mapping

    5: C HAPTER ONFIGURING THE Traffic mapping Up to 16 rules can be defined to classify your network traffic into Diffserv forwarding groups and outgoing connections. Figure 86 Traffic Mapping Screen Click Add, the Edit Traffic Class screen will appear. Figure 87 Edit Traffic Class Screen 1 Define the Rule name.
  • Page 109 Advanced Figure 88 Detailed Edit Traffic Class Screen Enter the information, then click Apply to make the settings to take effect.

  • Page 110: Vpn

    5: C HAPTER ONFIGURING THE The Router has a Virtual Private Network (VPN) feature that provides a secure link between remote users and the corporate network by establishing an authenticated and encrypted tunnel for passing secure data over the Internet. The Router supports three modes of VPN operation: ■...
  • Page 111 Figure 89 VPN Screen 1 Check the Enable IPsec box, configuration details screen appears. Figure 90 Enable IPSec Screen 2 Enter the Local ID Name of your VPN. (the default is 3ComVPN) 3 Click Add to create a new entry, see Figure 91...
  • Page 112 5: C HAPTER ONFIGURING THE Figure 91 Add New VPN Tunnel Parameter Screen On the VPN Tunnel Parameter screen, 1 Set the VPN Tunnel Type to IPSec. 2 Enter a descriptive name for the tunnel in the Tunnel Name field. 3 Remote VPN Gateway - select IP address, and then enter the IP address in the IP Address/Host Name field.
  • Page 113 Note that if you select IKE Main Mode from the Key Management drop-down menu (see step 6), you must enter IP_IPV4_ADDR here. 5 Select the Local Party ID, and then enter the ID, Network Address and Subnet Mask of the Local Secure Group. The network address of the local secure group is usually the network address of the local network.
  • Page 114 5: C HAPTER ONFIGURING THE Check the Enable L2TP box, configuration details screen appears, see Figure 92 Figure 92 Enable L2TP Screen 1 Enter the Pre-shared Key for L2TP Server over IPSec Setting. 2 Define the IP Address Pool for L2TP clients, enter the start/end address. 3 Click Add to create a new entry, see Figure 93 Add New VPN Tunnel Parameter L2TP over IPSec Screen OUTER...
  • Page 115 1 Set the Tunnel Type to L2TP over IPSec. 2 Enter a descriptive name for the tunnel in the Tunnel Name field. 3 Enter the User name and Password. 4 Enter the Idle Timeout value. 5 Set the L2TP Type Setting to L2TP Server, or L2TP Client. if you set the type as L2TP Client, then set the Local Type Setting to ■...
  • Page 116 5: C HAPTER ONFIGURING THE Figure 95 Add new PPTP VPN Tunnel Screen 1 Set the Tunnel Type to PPTP. 2 Enter a descriptive name for the tunnel in the Tunnel Name field. 3 Enter the User name and Password. 4 Enter the Idle Timeout value.

  • Page 117: System Tools

    System Tools System Tools These screens allow you to manage different parameters of the Router and perform certain administrative functions. Restart Router Sometimes it may be necessary to restart (or reboot) the Router. Restarting the Router from this screen will not delete any of your configuration settings.

  • Page 118: Upgrade

    ■ ■ ■ Upgrade From time to time 3Com may release new versions of the Router’s firmware. Firmware updates contain improvements and fixes to problems that may have existed. Figure 98 Upgrade Screen Please download the firmware file to your PC first, and then click Browse to locate the file, and select the firmware file.

  • Page 119: Time Zone

    System Tools Time Zone You can set the time settings for the Router on this screen. Figure 99 Time Zone Screen The Router keeps time by connecting to a Network Time Protocol (NTP) server. This allows the Router to synchronize the system clock to the Internet.

  • Page 120: Ping

    5: C HAPTER ONFIGURING THE Ping The ping tool is used to test if the network is working properly. Figure 100 Ping Screen 1 Enter the IP address or domain name in the IP Address or Domain Name field, and click Ping. 2 Select from the Number of times to Ping drop-down menu.

  • Page 121: Traceroute

    Traceroute Traceroute is the program that shows you the route over the network between two systems, listing all the intermediate routers a connection must pass through to get to its destination. It can help you determine why your connections to a given server might be poor, and can often help you figure out where exactly the problem is.

  • Page 122: Dns Lookup

    5: C HAPTER ONFIGURING THE DNS Lookup DNS Lookup is the process of resolving an IP address (i.e. 192.168.11.137) to a host name (i.e. xxxcompany.net). Figure 102 DNS Lookup Screen 1 Enter the IP address or domain name in the IP Address or Domain Name field, and click Dns lookup.

  • Page 123: Status And Logs

    Status and Logs You can use the Status Screen to view version numbers for your Router’s software and hardware and check the status of connections to WAN, LAN and WLAN interfaces. Status This screen shows Router status and statistics. ■ ■...

  • Page 124: Routing Table

    5: C HAPTER ONFIGURING THE Routing Table This screen displays details for the default routing used by your Router and any routing created using Static Routing or RIP. Figure 105 Routing Table Screen Logs This screen shows any attempts that have been made to gain access to your network as well as the system activities.

  • Page 125: Traffic Statistics

    Status and Logs Traffic Statistics This screen shows the traffic statistics. Use the Refresh button to update the information. Note that the current implementation only shows traffic statistics per forwarding group. Hence if QoS is not enabled, this screen will always show zero values. Figure 107 Traffic Statistics Screen...

  • Page 126: Support/Feedback

    3Com. Support Figure 108 Support Screen This screen shows support information. Feedback To provide feedback to 3Com, please click Provide Feedback, and this will connect you to the 3Com Web site. Figure 109 Feedback Screen This screen shows feedback information.

  • Page 127: Troubleshooting

    Basic Connection The Router has been designed to aid you when detecting and solving Checks possible problems with your network. These problems are rarely serious; the cause is usually a disconnected or damaged cable, or incorrect configuration. If this section does not solve your problem, contact your supplier for information on what to do next.

  • Page 128: Browsing To The Router Configuration Screens

    6: T HAPTER ROUBLESHOOTING Browsing to the If you have connected your Router and computers together but cannot Router browse to the Router configuration screens, check the following: Configuration ■ Screens ■ ■ ■ ■ damaged and that it is correctly inserted at both ends. You may find that a TP cable works when connected to the Router, but does not work if disconnected from the Router and connected to another device.

  • Page 129: Connecting To The Internet

    Connecting to the If you can browse to the Router configuration screens but cannot access Internet Web sites on the Internet, check the following: ■ ■ ■ ■ 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...

  • Page 130: Wireless Networking

    6: T HAPTER ROUBLESHOOTING Wireless ■ Networking ■ ■ ■ ■ ■ ■ ■ ■ ■ Ensure that you have an 802.11b or 802.11g or 802.11n wireless adapter for each wireless computer, and that it is correctly installed and configured. Verify that each wireless computer has either Windows 98 or higher or MAC OS 8.5 or higher.
  • Page 131 unsure try relocating both the wireless computers and the Router to establish whether this problem exists. Most wireless computer adapters will scan the channels for the ■ wireless Router. If a wireless computer has not located the Router then try initiating a search manually if the client software supports this feature or manually set the channel on your wireless computer to correspond to the Router channel number.

  • Page 132: Recovering From Corrupted Software

    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. Check on www.3com.com for the latest version firmware. 1 Remove power from the Router and disconnect from DSL or Cable modem and all your computers, except for the one computer with the software image.
  • Page 133 Ensure you are using only the 3Com power adapter supplied with the ■ Router. If there is still no power, contact 3Com Technical Support and ask for assistance Caution: Only use the power adapter supplied with the Router or a replacement 3Com power adapter.

  • Page 134: Frequently Asked Questions

    VPN initiation/termination is useful when you need to establisha secure site-to-site communication or make your network accessible to remote teleworkers. VPN passthrough is used when you are connected to 3Com Router and access the corporate network from your laptop with VPN client."...

  • Page 135: Ip Addressing

    IP A 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 136 A: IP A PPENDIX DDRESSING For your network to work correctly, all devices on the network must have: ■ ■ The only value that will be different is the specific host device number. This value must always be unique. An example IP address is ‘192.168.100.8’. However, the size of the network determines the structure of this IP address.

  • Page 137: 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’. represented) and a Router might be configured. Table 4 IP Addressing and Subnet Masking Device PC 1 PC 2 PC 3 PC 4 Router How does a Device There are three different ways to obtain an IP address and the subnet Obtain an IP mask.
  • Page 138 A: 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 and Windows XP.

  • Page 139: Technical Specifications

    This section lists the technical specifications for the 3Com Wireless 11n Cable/DSL Firewall Router. 3Com Wireless 11n Interfaces Cable/DSL Firewall WAN connection — one 10 Mbps/100Mbs dual speed Ethernet port Router (10BASE-T/100BASE-TX) LAN connection — four 10 Mbps/100 Mbps dual speed Ethernet ports...
  • Page 140 B: T PPENDIX ECHNICAL PECIFICATIONS Standard IEEE 802.11g, Direct Sequence Spread Spectrum (DSSS) Transmission rate: 54 Mbps, automatic fallback to 48, 36, 24, 18, 12, or 6 Mbps Maximum channels: 13 Range up to 304.8m (1000ft) Sensitivity: 6, 12, 18, 24, 36, 48 Mbps: -85 dBm; Modulation: CCK, BPSK, QPSK, OFDM Encryption: 40/64 bit WEP, 128 bit WEP, WPA/WPA2 Maximum clients: 128...

  • Page 141: Standards

    Standards Functional: Safety: EMC: Radio Environmental: EN 60068 (IEC 68) *See “Regulatory 3Com Wireless 11n Cable/DSL Firewall Router ISO 8802/3 IEEE 802.3 IEEE 802.11b, 802.11g EN 60950-1: 2001 UL 60950-1 IEC 60950-1: 2001 CSA 22.2 No. 60950-1 FCC Part15 B...
  • Page 142 B: T PPENDIX ECHNICAL PECIFICATIONS System Requirements Operating Systems The Router will support the following Operating Systems: ■ ■ ■ ■ ■ ■ ■ ■ Ethernet Performance The Router complies to the IEEE 802.3i, u and x specifications. Cable Specifications The Router supports the following cable types and maximum lengths: ■...
  • Page 143 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 144 C: S PPENDIX AFETY NFORMATION WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They cannot be used as telephone sockets. Only connect RJ-45 data connectors to these sockets. Wichtige Sicherheitshinweise VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu befolgen.
  • Page 145 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 146 C: S PPENDIX AFETY NFORMATION conditions ne sont maintenues que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. AVERTISSEMENT: Il n’y a pas de parties remplaceables par les utilisateurs ou entretenues par les utilisateurs à l’intérieur du moyeu. Si vous avez un problème physique avec le moyeu qui ne peut pas être résolu avec les actions de la résolution des problèmes dans ce guide, contacter votre fournisseur.

  • Page 147: End User 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 148 License Agreement amends such Limited Warranty Card or product manual as follows: 3Com's warranty and warranty disclaimers for the materials runs from 3Com to the purchasing Internet Service Provider only (not the end user of the materials), and such warranty is only for a total of fifteen (15) months from the date of manufacture.

  • Page 150: Register Your Product To Gain Service Benefits

    To take advantage of warranty and other service benefits, you must first Product to Gain register your product at: http://eSupport.3com.com/ Service Benefits 3Com eSupport services are based on accounts that are created or that you are authorized to access. Solve Problems 3Com offers the following support tool: Online ■...

  • Page 151: Access Software Downloads

    3Com as a separately ordered product. Separately orderable software releases and licenses are listed in the 3Com Price List and are available for purchase from your 3Com reseller.
  • Page 152 PPENDIX BTAINING UPPORT FOR To send a product directly to 3Com for repair, you must first obtain a return materials authorization number (RMA). Products sent to 3Com without authorization numbers clearly marked on the outside of the package will be returned to the sender unopened, at the sender’s expense.
  • Page 153 Portuguese speakers, enter the URL: ■ http://lat.3com.com/br/support/form.html English speakers in Latin America, send e-mail to: ■ lat_support_anc@3com.com US and Canada — Telephone Technical Support and Repair All locations: All 3Com products: 1 800 876 3266 Country customer_support@3com.com Grenada Guadalupe Guatemala Guyana...
  • Page 154 E: O PPENDIX BTAINING UPPORT FOR RODUCTS...
  • Page 155 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 156 LOSSARY access point. It offers lower performance than infrastructure mode, which is the mode the router uses. (see also Infrastructure mode.)
  • Page 157 Auto-negotiation Some devices in the range support auto-negotiation. Auto-negotiation is where two devices sharing a link, automatically 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.
  • Page 158 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 159 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; however they connect more LANs than a repeater and are generally more sophisticated. IEEE Institute of Electrical and Electronics Engineers.
  • Page 160 LOSSARY 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). LANs are characterized by high transmission speeds over short distances (up to 1000 metres).
  • Page 161 RJ-45 A standard connector used to connect Ethernet networks. The “RJ” stands for “registered jack”. 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.
  • Page 162 LOSSARY Traffic The movement of data packets on a network. Universal Plug and Universal Plug and Play is a system which allows compatible applications Play to read some of their settings from the Router. This allows them to automatically configure some, or all, of their settings and need less user configuration.
  • Page 163 LOSSARY WLAN Wireless Local Area Network. A WLAN is a group of computers and devices connected together by wireless in a relatively small area (such as a house or office). Wi-Fi Protected Access. A dynamically changing encryption mechanism for wireless networking. Encryption strength is 256 bit.
  • Page 164 LOSSARY...
  • Page 165 ENERAL TATEMENTS The 3Com Wireless 11n Cable/DSL Firewall Router (WL-602) must be installed and used in strict accordance with the manufacturer's instructions as described in the user documentation that comes with the product. This product contains encryption. It is unlawful to export out of the U.S. without obtaining a U.S. Export License.
  • Page 166 The correction of interference caused by such unauthorized modification, substitution or attachment will be the responsibility of the user. Changes or modifications not expressly approved by 3Com could void the user's authority to operate this equipment. US M ANUFACTURER 3Com Corporation...
  • Page 167 For connection to DSL/Cable networks NOTE: To ensure product operation is in compliance with local regulations, select the country in which the product is installed. Refer to 3CRWER300-73 User Guide. For connection to DSL/Cable networks This equipment may be operated in: Česky...
  • Page 168 A copy of the signed Declaration of Conformity can be downloaded from the Product Support web page for the 3Com Wireless 11n Cable/DSL Firewall Router at http://www.3Com.com. Also available at http://support.3com.com/doc/WL-602_EU_DOC.pdf. Français Par la présente 3Com Corporation déclare que [French]...
  • Page 169 EU - R ESTRICTIONS FOR This device may be operated indoors or outdoors in all countries of the European Community using the 2.4GHz band: Channels 1 – 13, except where noted below. 2.4GH IN THE Z BAND In Italy the end-user must apply for a license from the national spectrum authority to operate this device outdoors.
  • Page 171 NDEX Numbers 128-bit WEP 46 128-bit WEP Screen 46 1483 Bridge Mode 55 64-bit WEP Screen 47 Access Control Screen 62 Add PC Screen 63 Add Schedule Rule Screen 65 Addresses IP 85 Admin Password Screen 75 Advanced Screen 68 Automatic Addressing 87 Backup/Restore Settings Screen 74 Bridge Mode for Single PC Screen 53...
  • Page 172 NDEX MAC Address Filtering Screen 66 mode 30 NAT (Network Address Translation) 68 NAT-T (NAT Traversal) 68 Network addresses 85 Networking wireless 81 wireless 14 Password 27, 75 Poison Reverse 58 PPPoA 31 PPPoA Screen 31 PPPoA Settings Screen 52 PPPoE 26, 30, 31 PPPoE Screen 30 PPPoE Settings Screen 51...

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