OfficeConnect ADSL Wireless 54 Mbps 11g Firewall Router User Guide ® WL-552 3CRWDR101A-75 3CRWDR101B-75 http://www.3Com.com/ Part No. 10015091 Rev.
3Com Corporation 350 Campus Drive, Marlborough, MA USA 01752-3064 Copyright © 2004, 2005, 2006, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.
CONTENTS ABOUT THIS GUIDE Naming Convention 7 Conventions 8 Feedback About This User Guide Related Documentation 9 1 8 INTRODUCING THE ROUTER OfficeConnect ADSL Wireless 54 Mbps 11g Firewall Router Router Advantages 13 Package Contents 13 Minimum System and Component Requirements 14 Physical Features 14 2 INSTALLING THE ROUTER Introduction 17 Safety Information 17 Positioning the Router 17 Using the Rubber Feet 18 Wall Mounting 18 Powering Up the Router 19 Connecting the Router 19 3 SETTING UP YOUR
RUNNING THE SETUP WIZARD Accessing the Setup Wizard 27 Setup Wizard - Change Password 30 Setup Wizard - Time and Time Zone 30 Setup Wizard - Connection Type 31 Setup Wizard - LAN Settings 36 Setup Wizard - Wireless Settings 37 Setup Wizard - Configuration Summary 38 5 CONFIGURING THE ROUTER Navigating Through the Router Configuration screens Main Menu 39 Welcome Screen 39 Status 39 LAN Settings 40 LAN Settings 40 DHCP Clients List 41 Wireless Settings 43 Configuration 44 Encryption 45 Connection Contro
Schedule Rule 74 PC Privileges 75 URL Filter 77 Server Control 79 Quality of Service 81 QoS Settings 81 Traffic Mapping 81 Traffic Statistics 82 Advanced 83 Security 83 Static Routes 86 RIP 87 DDNS 88 SNMP 90 Syslog 91 Proxy ARP 92 System Tools 93 Restart Router 93 Configuration 93 Upgrade 94 Time Zone 95 Ping 96 Traceroute 97 DNS Lookup 98 Status and Logs 99 Status 99 ADSL Status 99 ATM PVC Status 100 Routing Table 100 Logs 101 Support/Feedback 102 Support 102 Feedback 102 6 TROUBLESHOOTING Basic Connect
Connecting to the Internet 104 Forgotten Password and Reset to Factory Defaults Wireless Networking 105 Recovering from Corrupted Software 107 Frequently Asked Questions 108 A 104 IP ADDRESSING The Internet Protocol Suite 109 Managing the Router over the Network 109 IP Addresses and Subnet Masks 109 How does a Device Obtain an IP Address and Subnet Mask? DHCP Addressing 111 Static Addressing 111 Auto-IP Addressing 111 B 111 TECHNICAL SPECIFICATIONS OfficeConnect ADSL Wireless 54Mbps 11g Firewall Route
GLOSSARY REGULATORY NOTICES INDEX
ABOUT THIS GUIDE This guide describes how to install and configure the 3Com OfficeConnect© ADSL Wireless 54 Mbps 11g Firewall Router (3CRWDR101A-75/3CRWDR101B-75). 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.
8 ABOUT THIS GUIDE Conventions Table 1 and Table 2 list conventions that are used throughout this guide. Table 1 Notice Icons Icon Notice Type Description Information note Information that describes important features or instructions. Caution Information that alerts you to potential loss of data or potential damage to an application, system, or device. Warning Information that alerts you to potential personal injury.
Feedback About This User Guide Feedback About This User Guide 9 Your suggestions are very important to us. They will help make our documentation more useful to you. Please e-mail comments about this document to 3Com at: pddtechpubs_comments@3com.
10 ABOUT THIS GUIDE
1 INTRODUCING THE ROUTER Welcome to the world of networking with 3Com®. In the modern business environment, communication and sharing information is crucial. Computer networks have proved to be one of the fastest modes of communication but, until recently, only large businesses could afford the networking advantage.
12 CHAPTER 1: INTRODUCING THE ROUTER 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.
Router Advantages Router Advantages Package Contents 13 The advantages of the Router include: ■ Shared Internet connection for both wired and wireless computers ■ High speed 802.
14 CHAPTER 1: INTRODUCING THE ROUTER Minimum System and Component Requirements Physical Features Your Router requires that the computer(s) and components in your network be configured with at least the following: ■ A computer with an operating system that supports TCP/IP networking protocols (for example Windows 98/NT/Me/2000/XP, Unix, Mac OS 8.5 or higher). ■ An Ethernet 10 Mbps or 10/100 Mbps NIC for each computer to be connected to the four-port switch on your Router. ■ An 802.11b or 802.
Physical Features 15 2 Power LED Green Indicates that the Router is powered on, and the boot up is successful. 3 SYNC LED Green If the LED is on it indicates that DSL connection is present. This LED flashes during configuration at power up. 4 Online LED Green If this LED is on, your username/password has been authenticated successfully with your ISP. 5 Wireless LAN (WLAN) Status LED Green If the LED is on it indicates that wireless networking is enabled.
16 CHAPTER 1: INTRODUCING THE ROUTER The rear panel (Figure 4) of the Router contains four LAN ports, one ADSL port, a reset button, a power OK LED, and a power adapter socket. Figure 4 Router - Rear Panel 7 Wireless Antennae The antennae should be placed in a ‘V’ position when initially installed. CAUTION: Do not force the antennae beyond their mechanical stops. Rotating the antennae further may cause damage.
2 Introduction Safety Information INSTALLING THE ROUTER 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. Please note the following: WARNING: Please read the “Safety Information” section in Appendix C before you start.
18 CHAPTER 2: INSTALLING THE ROUTER When positioning your Router, ensure: Using the Rubber Feet Wall Mounting ■ It is out of direct sunlight and away from sources of heat. ■ Cabling is away from power lines, fluorescent lighting fixtures, and sources of electrical noise such as radios, transmitters and broadband amplifiers. ■ Water or moisture cannot enter the case of the unit. ■ Air flow around the unit and through the vents in the side of the case is not restricted.
Powering Up the Router Powering Up the Router 19 To power up the Router: 1 Plug the power adapter into the power adapter socket located on the back panel of the Router. 2 Plug the power adapter into a standard electrical wall socket. 3 Press the power button located on the back of the Router. Connecting the Router The first step for installing your Router is to physically connect it to the telephone socket and then connect it to a computer in order to be able to access the Internet.
20 CHAPTER 2: INSTALLING THE ROUTER you can connect your phones and computer directly to the splitter as shown below (Figure 6): or ■ If you are using a splitterless (G.lite) connection, then your service provider will attach the outside ADSL line directly to your phone system.
Connecting the Router 21 Figure 7 Installing without a splitter Plain Old Telephone System (POTS) Voice Residential Connection Point [Network Interface Device (NID)] Filter Voice & Data Voice & Data Router Data or Ethernet hub or switch You have now completed the hardware installation of your Router. Next you need to set up your computers so that they can make use of the Router to communicate with the Internet.
22 CHAPTER 2: INSTALLING THE ROUTER
3 SETTING UP YOUR COMPUTERS The Router has the ability to dynamically allocate network addresses to the computers on your network, using DHCP. However, your computers need to be configured correctly for this to take place. To change the configuration of your computers to allow this, follow the instructions in this chapter.
24 CHAPTER 3: SETTING UP YOUR COMPUTERS Figure 8 Local Area Properties Screen 6 Ensure that the options Obtain an IP address automatically, and Obtain DNS server address automatically are both selected as shown in Figure 9. Click OK. Figure 9 Internet Protocol (TCP/IP) Properties Screen 7 Restart your computer.
Obtaining an IP Address Automatically 25 Windows XP 1 From the Windows Start Menu, select Control Panel. 2 Click on Network and Internet Connections. 3 Click on the Network Connections icon. 4 Double click on LAN or High Speed Connection icon. A screen titled Local Area Connection Status will appear. 5 Select Internet Protocol TCP/IP and click on Properties. 6 Ensure that the options Obtain an IP address automatically, and Obtain DNS servers automatically are both selected. Click OK.
26 CHAPTER 3: SETTING UP YOUR COMPUTERS Disabling PPPoE and PPTP Client Software If you have PPPoE client software installed on your computer, you will need to disable it. To do this: 1 From the Windows Start Menu, select Settings > Control Panel. 2 Double click on Internet Options. 3 Select the Connections Tab. A screen similar to Figure 10 should be displayed. 4 Select the Never dial a connection option.
4 Accessing the Setup Wizard RUNNING THE SETUP WIZARD The Router setup program is Web-based, which means that it is accessed through your Web browser (Netscape Navigator 4.7 or higher, Internet Explorer 5.0 or higher, or Mozilla 1.2.1 or higher). To use the Setup Wizard: 1 Ensure that you have at least one computer connected to the Router. Refer to Chapter 2 for details on how to do this. 2 Launch your Web browser on the computer.
28 CHAPTER 4: RUNNING THE SETUP WIZARD 4 To log in as an administrator, enter the password (the default password is admin) in the System Password field and click Log in (Figure 12). Figure 12 Router Login Screen 5 When you have logged in, ■ if you are logging in for the first time, the Country Selection screen will appear (Figure 13). Please select the country form the drop-down menu, and click Apply. Figure 13 Country Selection Screen The Wizard will then launch automatically (refer to Figure 16).
Accessing the Setup Wizard 29 Figure 14 Welcome Screen ■ Go to the Notice Board tab to see the current software information. To view the Web help, click the Help button. ■ Go to the Password tab to change the password (Figure 15). ■ Go to the Wizard tab to do a quick setup of the Router (Figure 16). The password screen allows you to change the current password and set the login time limit to the Router’s management interface.
30 CHAPTER 4: RUNNING THE SETUP WIZARD 3 Enter the time period in Login Timeout to set a maximum period of time for which the login session is maintained during inactivity (Default: 10 minutes). Setup Wizard Change Password To ensure the security of your Router, it is recommended that you choose a new password - this should be a mix of letters and numbers, and not easily guessed by others. To leave the current password unchanged, leave the fields blank and click Next.
Accessing the Setup Wizard 31 4 Check the Enable box in the Daylight Savings field, if daylight savings applies to your area. 5 Click Next. Setup Wizard Connection Type The Connection Type screen allows you to set up the Router for the type of Internet connection you have. Before setting up your connection type, have your account information from your ISP ready.
32 CHAPTER 4: RUNNING THE SETUP WIZARD PPPoE Mode To set up the Router for use with a PPP over Ethernet (PPPoE) connection, use the following procedure: Figure 19 PPPoE Screen 1 Enter your user name in the Username field. 2 Enter your password in the Password field. 3 Re-type your password in the Retype Password field. 4 Enter your VPI and VCI information in the VPI/VCI fields. 5 Select the encapsulation type (LLC or VC MUX) in the Encapsulation drop-down menu.
Accessing the Setup Wizard 33 PPPoA Mode To set up the Router for use with a PPP over ATM (PPPoA) connection, use the following procedure: Figure 20 PPPoA Screen 1 Enter your user name in the Username field. 2 Enter your password in the Password field. 3 Re-type your password in the Retype Password field. 4 Enter your VPI and VCI information in the VPI/VCI fields. 5 Select the encapsulation type (LLC or VC MUX) in the Encapsulation drop-down menu. This information should be provided to you by your ISP.
34 CHAPTER 4: RUNNING THE SETUP WIZARD Bridge Mode (for a single PC) To set up the Router for use with an RFC1483 bridged connection, use the following procedure: Figure 21 Bridged Mode Screen 1 Enter your VPI and VCI information in the VPI/VCI fields. 2 Select the encapsulation type (LLC or VC MUX) in the Encapsulation drop-down menu. This information should be provided to you by your ISP. 3 Check all of your settings, and then click Next.
Accessing the Setup Wizard 35 1 Enter your Internet IP address in the WAN IP field. 2 Enter the subnet mask in the Subnet Mask field. 3 Enter the default gateway IP address in the Default Gateway field. 4 Enter the DNS address in the DNS field. 5 Enter your VPI and VCI information in the VPI/VCI fields. 6 Select the encapsulation type (LLC or VC MUX) in the Encapsulation drop-down menu. This information should be provided to you by your ISP. 7 Check all of your settings, and then click Next.
36 CHAPTER 4: RUNNING THE SETUP WIZARD To assign a fixed IP address: 1 Enter your Internet IP address in the WAN IP field. 2 Enter the subnet mask in the Subnet Mask field. 3 Enter the default gateway IP address in the Default Gateway field. 4 Enter the DNS address in the DNS field. 5 Enter your VPI and VCI information in the VPI/VCI text boxes. 6 Select the encapsulation type (LLC or VC MUX) in the Encapsulation drop-down menu. This information should be provided to you by your ISP.
Accessing the Setup Wizard Setup Wizard Wireless Settings 37 The Wireless Settings screen allows you to set up the SSID and radio channel used for the wireless connection. Figure 25 Wireless Settings 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. If there are other wireless networks in your area, you should give your wireless network a unique name.
38 CHAPTER 4: RUNNING THE SETUP WIZARD Setup Wizard Configuration Summary When you have completed the Setup Wizard, a configuration summary will appear. Verify the configuration information of the Router and then click Apply to save your settings. 3Com recommends that you print out this page for your records. Figure 26 Configuration Summary Screen Your Router is now configured and ready for use. See Chapter 5 for a detailed description of the Router configuration.
5 CONFIGURING THE ROUTER Navigating Through the Router Configuration screens This chapter describes all the screens available through the Router configuration screens, and is provided as a reference. To get to the configuration screens, enter the Router’s default IP in the location bar of your browser. The default IP is http://192.168.1.1. However, if you changed the Router LAN IP address during initial configuration, use the new IP address instead.
40 CHAPTER 5: CONFIGURING THE ROUTER LAN Settings Your Router is equipped with a DHCP server that will automatically assign IP addresses to each computer on your network. The factory default settings for the DHCP server will work with most applications. If you need to make changes to the settings, you can do so. The LAN settings screen allows you to: ■ Change the default IP address of the Router. The default IP is 192.168.1.1 ■ Change the Subnet Mask. The default setting is 255.255.255.
LAN Settings 41 1 Enter the Router’s IP Address and Subnet Mask in the appropriate fields. The default IP address is 192.168.1.1. 2 If you want to use the Router as a DHCP Server, select On in the DHCP Server field. 3 Enter the IP address range in the IP Pool Start Address and IP Pool End Address fields. 4 Specify the DHCP Lease time by selecting the required value from the Lease Time drop-down menu. The lease time is the length of time the DHCP server will reserve the IP address for each computer.
42 CHAPTER 5: CONFIGURING THE ROUTER ■ Host Name — The client machine’s host name, if configured. ■ MAC Address — The Media Access Control (MAC) address of the client’s network card. ■ Client Type — Whether the client is connected to the Router by wired or wireless connection. ■ Check the Fix checkbox to permanently fix the IP address. ■ Click Release to release the displayed IP address. ■ Click New to allocate an IP address to a MAC address (refer to Figure 30).
Wireless Settings Wireless Settings 43 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.
44 CHAPTER 5: CONFIGURING THE ROUTER Configuration The Wireless Configuration Screen allows you to turn on/ turn off the wireless function, and set up basic wireless settings. Figure 32 Wireless Configuration Screen To enable the wireless function: 1 Check Enable Wireless Networking checkbox. 2 Select the wireless channel you want to use from the Channel drop-down menu. 3 Specify the SSID to be used by your wireless network in the SSID field.
Wireless Settings Encryption 45 This feature prevents any non-authorized party from reading or changing your data over the wireless network. Figure 33 Encryption Screen Select the wireless security mode that you want to use from the drop-down menu, and click Apply.
46 CHAPTER 5: CONFIGURING THE ROUTER 64-bit WEP 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. Figure 34 64-bit WEP Screen To enable 64-bit WEP: 1 You can enter the 64-bit WEP key manually: ■ enter the WEP key as 5 pairs of hex digits (0-9, A-F).
Wireless Settings 47 128-bit WEP 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. Figure 35 128-bit WEP Screen To enable 128-bit WEP: 1 You can enter the 128-bit WEP key manually: ■ enter your WEP key as 13 pairs of hex digits (0-9, A-F).
48 CHAPTER 5: CONFIGURING THE ROUTER 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 36 WPA-PSK (no server) Screen 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.
Wireless Settings 49 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 37 WPA (with RADIUS Server) Screen 1 Select WPA with RADIUS server from the Security Mode drop-down menu. 2 Select WPA mode from the drop-down menu, three modes are supported: WPA, WPA2, and Mixed mode.
50 CHAPTER 5: CONFIGURING THE ROUTER Connection Control This feature is used to filter the clients based on their MAC addresses. Check the Enable MAC Address Filtering checkbox, the Connection Control screen will appear. Figure 38 Connection Control Screen There are two options available in the Access rule for registered MAC address field: ■ if you click Allow, this means only the MAC addresses registered here in the list will be allowed to access the Router via wireless link.
Wireless Settings Client List 51 You can view the list of all wireless clients that are connected to the Router. Figure 39 Client List Screen Click Refresh to update the list. WDS Settings 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. Figure 40 Wireless WDS Settings Screen 1 Check the Enable WDS Function checkbox.
52 CHAPTER 5: CONFIGURING THE ROUTER 3 Click Add to add the MAC address of the AP to the list, the add WDS screen will appear (refer to Figure 41). Figure 41 Add WDS screen Enter the MAC address(es) of one or more access points in the AP MAC Address table, and click Apply. Advance The Advance screen allows you to configure detailed settings for your wireless connection.
Wireless Settings Profile 53 ■ DTIM Interval: A DTIM (Delivery Traffic Indication Message) is a countdown mechanism used to inform your wireless clients of the next window for listening to broadcast and multicast messages. ■ Fragmentation Threshold: this is the maximum size for directed data packets transmitted. The use of fragmentation can increase the reliability of frame transmissions. Because of sending smaller frames, collisions are much less likely to occur.
54 CHAPTER 5: CONFIGURING THE ROUTER Internet Settings ATM PVC You can configure the settings for your DSL connection. This feature is used to configure the parameters for your DSL 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. Figure 44 ATM PVC Screen You should see the first entry already contains information that’s been configured using the Wizard in the initial setup.
Internet Settings 55 PPPoE PPP over Ethernet, provides routing for multiple PCs. To configure this function correctly, you should obtain the information from your ISP. Figure 45 PPPoE Settings Screen 1 Select PPPoE from the Protocol drop-down menu. 2 Enter the IP address and Subnet Mask information provided by your ISP into the IP address and Subnet Mask fields. 3 Enter the user name assigned to you by your ISP in the Username field.
56 CHAPTER 5: CONFIGURING THE ROUTER ■ Manual - Start in Last State means that after re-booting the Router, the Internet connection will stay in the previous condition before the reboot. 5 If you want your Router to automatically disconnect from the Internet after a period of inactivity, specify a time in the Idle Time (Minutes) field. (Enter a value of 0 to disable this timeout). 6 Enter the Maximum Transmission Unit (MTU) value supplied by your ISP.
Internet Settings 57 13 Click Apply. PPPoA PPP over ATM, this is a popular choice among European DSL providers. To configure this function correctly, you should obtain the information from your ISP. Figure 46 PPPoA Settings Screen 1 Select PPPoA from the Protocol drop-down menu. 2 IP assigned by ISP: ■ ■ Select Yes, if your ISP assigns your IP address dynamically, and proceed to next step. If your ISP has assigned you a fixed or static IP address, select No in the IP assigned by ISP field.
58 CHAPTER 5: CONFIGURING THE ROUTER 4 Select the connection type from the Connect Type drop-down menu. ■ ■ ■ ■ ■ Always Connected means the Internet connection to your ISP is always on. Auto - Triggered by Traffic means your Router will automatically connect to your ISP every time a PC needs to access the Internet. Manual - Start in Disconnected means that after re-booting the Router, the Internet connection will need to be re-established manually by the user.
Internet Settings 59 used for connections in which there is no fixed timing relationship between samples, but that still need a guaranteed QoS. Compare with ABR, CBR, and UBR. ■ UBR (unspecified bit rate): the UBR service class is intended for delay-tolerant or non-real-time applications, for example, those which do not require tightly constrained delay and delay variation, such as traditional computer communications applications. The UBR service may be considered as "best effort service".
60 CHAPTER 5: CONFIGURING THE ROUTER 4 Select the type of Quality of Service that you want from the QoS Class drop-down menu. ■ ■ ■ CBR (constant bit rate): the CBR service class is intended for real-time applications, for example, those requiring tightly constrained delay and delay variation, such as voice and video applications. The consistent availability of a fixed quantity of bandwidth is considered appropriate for CBR service.
Internet Settings 61 Routing Mode over ATM (RFC 1483 Routed Mode) This mode is commonly used with either dynamic or static IP addressing. In this mode the WAN ADSL port will be configured with an IP address provided by the ISP. To configure the settings correctly, you should obtain the information on this screen from your ISP. Figure 48 Routing Mode over ATM Screen 1 Select Routing Mode over ATM from the Protocol drop-down menu.
62 CHAPTER 5: CONFIGURING THE ROUTER 8 Select the type of Quality of Service that you want from the QoS Class drop-down menu. ■ ■ ■ CBR (constant bit rate): the CBR service class is intended for real-time applications, for example, those requiring tightly constrained delay and delay variation, such as voice and video applications. The consistent availability of a fixed quantity of bandwidth is considered appropriate for CBR service.
Internet Settings 63 Dynamic/Fixed IP in 1483 Bridge Mode (For Multiple PCs) In this example, the ISP uses fixed/dynamic IP to provide the Internet connection. To configure this function correctly, you should obtain the information on this screen from your ISP. Figure 49 Dynamic/Fixed IP for Bridge Mode Screen 1 Select Dynamic/Fixed IP in 1483 Bridge Mode from the Protocol drop-down menu.
64 CHAPTER 5: CONFIGURING THE ROUTER 8 Select the type of Quality of Service that you want from the QoS Class drop-down menu. ■ ■ ■ CBR (constant bit rate): the CBR service class is intended for real-time applications, for example, those requiring tightly constrained delay and delay variation, such as voice and video applications. The consistent availability of a fixed quantity of bandwidth is considered appropriate for CBR service.
Internet Settings DNS 65 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. For example, the domain name www.example.com might translate to 198.105.232.4. Check with your ISP for information on this screen.
66 CHAPTER 5: CONFIGURING THE ROUTER Hostname & 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. The Hostname and MAC Address screen displays. Figure 52 Hostname and 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.
Firewall Firewall 67 From these screens, you can configure settings for the firewall. Your Router is equipped with a firewall that will protect your network from a wide array of common hacker attacks including Ping of Death (PoD) and Denial of Service (DoS) attacks. You can turn the firewall function off if needed. 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.
68 CHAPTER 5: CONFIGURING THE ROUTER For low and medium levels of firewall protection, refer to Figure 54. For high level of firewall protection, refer to Figure 55. Figure 54 Low and Medium Level Firewall Protection Screen When abnormal network activity occurs, an alerting email will be sent out to you.
Firewall 69 Figure 55 High Level Firewall Protection Screen If you select high level of protection, you will need 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.
70 CHAPTER 5: CONFIGURING THE ROUTER ■ 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. ■ Incomplete TCP/UDP sessions (per min) HIGH - Maximum number of allowed incomplete TCP/UDP sessions per minute.
Firewall Special Applications 71 Special Applications 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 56 Special Applications Screen A list of popular applications has been included to choose from. Select your application from the Popular Applications drop-down menu. Then select the row that you want to copy the settings to from the Copy To drop-down menu, and click Copy To.
72 CHAPTER 5: CONFIGURING THE ROUTER 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'.
Firewall 73 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. DMZ If you have a client PC that cannot run an Internet application properly from behind the firewall, you can open the client up to unrestricted two-way Internet access. This may be necessary if the NAT feature is causing problems with an application such as a game or video conferencing application.
74 CHAPTER 5: CONFIGURING THE ROUTER 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 page 75). Figure 59 Schedule Rule Screen 1 Click Add Rule to add a schedule rule (a screen similar to Figure 60 will appear). Figure 60 Add Schedule Rule Screen 2 Enter a name and comment for the schedule rule in the Name and Comment fields.
Firewall PC Privileges 75 The Router can be configured to restrict access to the Internet, email or other network services at specific days and times. Restriction can be set for a single computer, a range of computers, or multiple computers. You can define the traffic type permitted or not-permitted to the Internet. Figure 61 PC Privileges Screen To edit or delete specific existing filtering rules, click on Edit or Delete for the appropriate filtering rule.
76 CHAPTER 5: CONFIGURING THE ROUTER 3 Enter a description in the Client PC Description field, and the IP address or IP address range into the Client PC IP Address fields. 4 To bypass the URL Filter and Content Filter, check the corresponding Bypass checkbox. If you check the two options: Bypass URL Filter, and Bypass Content Filter, then the Web sites and keywords defined in this screen will not be filtered out. 5 Select the services to be blocked.
Firewall URL Filter 77 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. Figure 63 URL Filter Screen 1 Check the Enable URL Filtering Function checkbox. 2 Enter the URL address or keywords in the URL/Keyword field. 3 Select Denied or Allowed from the Mode drop-down menu.
78 CHAPTER 5: CONFIGURING THE ROUTER Content Filter You can use the list on the Content Filter screen to specify the type of content that you want to filter out. The Router comes with a 14-day free trial of the 3Com Content Filter Service (3CSBCFS). To activate the 14-day free trial of the service, you must first register your Router at www.3com.com. To continue using the service after the trial period, you must purchase the 12-month subscription license.
Firewall 79 4 If you are not sure about your subscription status, click CHECK in Subscription Filtering Status to find out if you have a current, valid subscription. 5 Subjects are listed under Core Categories and Productivity Categories. You can define what content should be viewed/blocked using the Allow/Deny option. The Deny option is used to filter out the content that contains the specific subject matter. Content with a specific subject matter will not be filtered out if the Allow option is checked.
80 CHAPTER 5: CONFIGURING THE ROUTER Figure 66 Server Control Add Server Screen 1 Enter a description in the Server Description field, and the IP address or IP address range into the Server IP Address fields. 2 Select the services that will be allowed. A list of popular services is given on this screen, to unblock a particular service, check the appropriate Allowed checkbox.
Quality of Service Quality of Service QoS Settings 81 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. This QoS function allows you to classify traffic of applications and provides them with differentiated services (Diffserv).
82 CHAPTER 5: CONFIGURING THE ROUTER Click Add to add a new traffic class rule (see Figure 69). Figure 69 Add New Traffic Class Rule Screen Traffic Statistics This screen shows the WAN outbound traffic statistics of all the Diffserv forwarding groups in the last 12 hours. This screen automatically updates every 5 minutes.
Advanced Advanced 83 From the Advanced screen, you can configure: Security ■ Security ■ Static Routes ■ RIP ■ DDNS ■ SNMP ■ Syslog ■ Proxy Arp Use the Security screen to set the advanced security settings for the Router. Figure 71 Security Screen ■ NAT — Before you enable NAT (Network Address Translation), make sure you have changed the administrator password. NAT is the method by which the Router shares the single IP address assigned by your ISP with the computers on your network.
84 CHAPTER 5: CONFIGURING THE ROUTER you turn NAT off, the computers on your network will not be able to access the Internet. Other problems may also occur. ■ IPSEC NAT-T Pass-through — NAT-T (NAT Traversal) is an Internet Draft proposed to IETF in order to help the problems associated with passing IPsec traffic through NAT Routers. For NAT-T to work, both ends of the connection need to support this function. Ensure that you select NAT-T only if it is needed as it will reduce LAN-WAN throughput.
Advanced 85 the MTU size on the WAN interface, the client sends an Internet Control Message Protocol (ICMP) error to the external server to request that the server negotiate the TCP Maximum Segment Size (MSS). However, this message may be blocked by some firewalls. When this occurs, the packet is dropped. To allow the message to go through the firewall, enable MSS Clamping. MSS clamping will make Internet Connection Sharing set the MSS value low enough to match the external interface.
86 CHAPTER 5: CONFIGURING THE ROUTER Static Routes You can configure static routes in this screen. To add a static route entry to the table, click Add. To change an existing entry, click Edit. To delete an entry, click Delete. Figure 72 Static Routes Screen This screen shows a list of current static route entries. For each entry, the following information is displayed: ■ Index — the index of the entry. ■ Network Address — the network address of the route.
Advanced RIP 87 RIP (Routing Information Protocol) - RIP allows the network administrator to set up routing information on one RIP-enabled device and send that information to all RIP-enabled devices on the network. Figure 73 RIP Parameter Screen You can set up RIP independently on both LAN and WAN interfaces. 1 Check the Enable RIP checkbox. 2 Check the Enable Auto summary checkbox. Auto summarization sends simplified routing data to other RIP-enabled devices rather than full routing data.
88 CHAPTER 5: CONFIGURING THE ROUTER 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. 6 Use the Authentication Required field to choose the mode of authentication: ■ None — Switches off authentication on the specified interface.
Advanced 89 Before you set up DDNS, you must obtain an account, password or key and static domain name from your DDNS provider. DDNS is disabled by default. Figure 74 Dynamic Domain Name Server (DDNS) Screen 1 Check Enable DDNS. 2 Select the provider, and then enter the necessary information provided by your DDNS provider. 3 Click Apply.
90 CHAPTER 5: CONFIGURING THE ROUTER SNMP SNMP (Simple Network Management Protocol) allows remote management of your Router by a PC that has an SNMP management agent installed. Figure 75 SNMP Screen To Configure SNMP Community: 1 In the Community column, enter the name of the SNMP communication channel. Your SNMP management agent needs to be configured with this name so that it can communicate with your Router.
Advanced 91 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. 2 In the Community field, enter the name of the SNMP communication channel to which you want your Router to send status messages. 3 Set the Version field to match the version of trap messaging that your SNMP management agent supports.
92 CHAPTER 5: CONFIGURING THE ROUTER 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. This heightens the security for your network. Figure 77 Proxy ARP Screen Enter the corresponding IP address in the IP Address From and IP Address To fields.
System Tools System Tools Restart Router These screens allow you to manage different parameters of the Router and perform certain administrative functions. 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. Click the Restart the Router button to restart the Router.
94 CHAPTER 5: CONFIGURING THE ROUTER Upgrade ■ Backup Configuration — You can save your current configuration by clicking the Backup button. Saving your configuration will allow you to restore it later if your settings are lost or changed. It is recommended that you backup your current configuration before performing a firmware update. ■ Restore Configuration Data — The Restore Settings option will allow you to restore a previously saved configuration.
System Tools Time Zone 95 You can set the time settings for the Router on this screen. Figure 81 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. The synchronized clock in the Router is used to record the security log and control client filtering. Select the time zone that you reside in.
96 CHAPTER 5: CONFIGURING THE ROUTER Ping The ping tool is used to test if the network is working properly. Figure 82 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. 3 The Router keeps a log of the ping test, click Clear Log to delete the records.
System Tools Traceroute 97 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.
98 CHAPTER 5: CONFIGURING THE ROUTER 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 84 DNS Lookup Screen 1 Enter the IP address or domain name in the IP Address or Domain Name field, and click Dns lookup. 2 The Router keeps a log of the DNS lookup test, click Clear Log to delete the records.
Status and Logs Status and Logs Status 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. Figure 85 Status Screen This screen shows Router status and statistics. ADSL Status 99 Figure 86 ADSL Status Screen This screen shows ADSL modem status and statistics.
100 CHAPTER 5: CONFIGURING THE ROUTER ATM PVC Status Figure 87 ATM PVC Status Screen This screen shows ATM PVC status and statistics. Routing Table ■ Click Release to release the IP address from your ISP. ■ Click Renew to obtain the IP address from your ISP. This screen displays details for the default routing used by your Router and any routing created using Static Routing or RIP.
Status and Logs Logs 101 This screen shows any attempts that have been made to gain access to your network as well as the system activities. Figure 89 Logs Screen ■ Click Help to view the help file. ■ Click Save to save the log to the hard disk as a text file. When prompted for a location to save the file to, specify a filename and location, and then click OK. ■ Click Clear to clear the log (note that all current entries will be erased). ■ Click Refresh to update the record.
102 CHAPTER 5: CONFIGURING THE ROUTER Support/Feedback Support You can use the Support/Feedback screen to obtain support and help, and also provide feedback to 3Com. Figure 90 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 91 Feedback Screen This screen shows feedback information.
6 Basic Connection Checks Browsing to the Router Configuration Screens TROUBLESHOOTING ■ Check that the Router is connected to your computers and to the telephone line, and that all the equipment is powered on. Check that the LAN Status and SYNC LEDs on the Router are illuminated, and that any corresponding LEDs on the NIC are also illuminated. ■ Ensure that the computers have completed their start-up procedure and are ready for use.
104 CHAPTER 6: TROUBLESHOOTING ■ Connecting to the Internet Forgotten Password and Reset to Factory Defaults If you cannot browse to the Router, use the winipcfg utility in Windows 98/ME to verify that your computer has received the correct address information from the Router. From the Start menu, choose Run and then enter winipcfg. Check that the computer has an IP address of the form 192.168.1.xxx (where xxx is in the range 2-254), the subnet mask is 255.255.255.0, and the default Router is 192.168.
Wireless Networking 105 4 Press and hold the Reset button on the rear panel (see “The rear panel (Figure 4) of the Router contains four LAN ports, one ADSL port, a reset button, a power OK LED, and a power adapter socket.” on page 16) for 5 seconds. 5 The Router will restart, and when the start-up sequence has completed, browse to: http://192.168.1.1 and run the configuration wizard. You may need to restart your computer before you attempt this.
106 CHAPTER 6: TROUBLESHOOTING For more effective coverage you can try reorientating your antennae. Place one antenna vertically and one horizontally to improve coverage. Additionally consider moving the wireless computer closer to the Router to confirm that the building structure or fittings are not adversely affecting the connectivity. If this resolves the problem consider relocating the wireless computer or the Router, or trying a different channel on the Router. ■ Sources of interference: The 2.
Recovering from Corrupted Software Recovering from Corrupted Software 107 If the system software has become corrupted, the Router will enter a “recovery” state; DHCP is enabled, and the LAN IP address is set to 192.168.1.1. Follow the instructions below to upload a new copy of the system software to a Router unit in this state. 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.
108 CHAPTER 6: TROUBLESHOOTING Frequently Asked Questions How do I reset the Router to Factory Defaults? See “Forgotten Password and Reset to Factory Defaults” on page 104. How many computers on the LAN does the Router support? A maximum of 253 computers on the LAN are supported. How many wireless clients does the Router support? A maximum of 128 wireless clients are supported. There are only 4 LAN ports on the Router.
A IP ADDRESSING The Internet Protocol Suite The Internet Protocol suite consists of a well-defined set of communications protocols and several standard application protocols. Transmission Control Protocol/Internet Protocol (TCP/IP) is probably the most widely known and is a combination of two of the protocols (IP and TCP) working together.
110 APPENDIX A: IP ADDRESSING For your network to work correctly, all devices on the network must have: ■ The same sub-network address. ■ The same subnet mask. The only value that will be different is the specific host device number. This value must always be unique. An example IP address is ‘192.168.100.8’. However, the size of the network determines the structure of this IP address. In using the Router, you will probably only encounter two types of IP address and subnet mask structures.
How does a Device Obtain an IP Address and Subnet Mask? 111 This type of IP Address operates on a subnet mask of ‘255.255.0.0’. See Table 4 for an example about how a network (only four computers represented) and a Router might be configured. Table 4 IP Addressing and Subnet Masking How does a Device Obtain an IP Address and Subnet Mask? DHCP Addressing Device IP Address Subnet Mask PC 1 192.168.100.8 255.255.0.0 PC 2 192.168.201.30 255.255.0.0 PC 3 192.168.113.155 255.255.0.0 PC 4 192.
112 APPENDIX A: IP ADDRESSING an IP address at random from the industry standard subnet of 169.254.x.x (with a subnet mask of 255.255.0.0). If two devices allocate themselves the same address, the conflict is detected and one of the devices allocates itself a new address. Automatic IP addressing support was introduced by Microsoft in the Windows 98 operating system and is also supported in Windows 2000 and Windows XP.
B TECHNICAL SPECIFICATIONS This section lists the technical specifications for the OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router. OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router Interfaces DSL connection LAN connection — four 10 Mbps/100 Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX) WLAN Interfaces 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.
114 APPENDIX B: TECHNICAL SPECIFICATIONS Operating Temperature 0 °C to 40 °C (32 °F to 105 °F) Power 8VA, 25 BThU/hr Humidity 0% to 90% (non-condensing) humidity Dimensions ■ Width = 220 mm (8.7 in.) ■ Depth = 133 mm (5.2 in.) ■ Height = 38 mm (1.5 in.) Weight Approximately 550 g (1.1 lbs) Standards Functional: ISO 8802/3 IEEE 802.3 IEEE 802.11b, 802.
OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router System Requirements 115 Operating Systems The Router will support the following Operating Systems: Ethernet Performance Cable Specifications ■ Windows 98Se ■ Windows NT 4.0 ■ Windows ME ■ Windows 2000 ■ Windows XP ■ Mac OS 8.5 or higher ■ Unix The Router complies to the IEEE 802.3i, u and x specifications.
116 APPENDIX B: TECHNICAL SPECIFICATIONS
C SAFETY INFORMATION Important Safety Information WARNING: Warnings contain directions that you must follow for your personal safety. Follow all directions carefully. You must read the following safety information carefully before you install or remove the unit: WARNING: The Router generates and uses radio frequency (rf) energy. In some environments, the use of rf energy is not permitted. The user should seek local advice on whether or not rf energy is permitted within the area of intended use.
118 APPENDIX C: SAFETY INFORMATION WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They cannot be used as telephone sockets. Only connect RJ-45 data connectors to these sockets. Wichtige Sicherheitshinweise VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu befolgen.
119 VORSICHT: Es sind keine von dem Benutzer zu ersetzende oder zu wartende Teile in dem Gerät vorhanden. Wenn Sie ein Problem mit dem Router haben, das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden kann, setzen Sie sich mit Ihrem Lieferanten in Verbindung. VORSICHT: Vor dem Ausbau des Geräts das Netzadapterkabel herausziehen. VORSICHT: RJ-45-Anschlüsse. Dies sind abgeschirmte RJ-45-Datenbuchsen. Sie können nicht als Telefonanschlußbuchsen verwendet werden.
120 APPENDIX C: SAFETY INFORMATION conditions ne sont maintenues que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. AVERTISSEMENT: Il n’y a pas de parties remplaceables par les utilisateurs ou entretenues par les utilisateurs à l’intérieur du moyeu. Si vous avez un problème physique avec le moyeu qui ne peut pas être résolu avec les actions de la résolution des problèmes dans ce guide, contacter votre fournisseur.
D END USER SOFTWARE LICENSE AGREEMENT 3Com Corporation END USER SOFTWARE LICENSE AGREEMENT YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE DOWNLOADING, INSTALLING AND USING THIS PRODUCT, THE USE OF WHICH IS LICENSED BY 3COM CORPORATION ("3COM") TO ITS CUSTOMERS FOR THEIR USE ONLY AS SET FORTH BELOW. DOWNLOADING, INSTALLING OR OTHERWISE USING ANY PART OF THE SOFTWARE OR DOCUMENTATION INDICATES THAT YOU ACCEPT THESE TERMS AND CONDITIONS.
122 APPENDIX D: END USER SOFTWARE LICENSE AGREEMENT and developed solely at private expense. The Software is delivered as "Commercial Computer Software" as defined in DFARS 252.227-7014 (June 1995) or as a commercial item as defined in FAR 2.101(a) and as such is provided with only such rights as are provided in this Agreement, which is 3Com's standard commercial license for the Software. Technical data is provided with limited rights only as provided in DFAR 252.227-7015 (Nov. 1995) or FAR 52.
E Register Your Product OBTAINING SUPPORT FOR YOUR PRODUCT Warranty and other service benefits start from the date of purchase, so it is important to register your product quickly to ensure you get full use of the warranty and other service benefits available to you. Warranty and other service benefits are enabled through product registration. Register your product at http://eSupport.3com.com/. 3Com eSupport services are based on accounts that you create or have authorization to access.
124 APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT Troubleshoot Online You will find support tools posted on the 3Com Web site at www.3com.com. 3Com Knowledgebase helps you troubleshoot 3Com products. This query-based interactive tool is located at http://knowledgebase.3com.com and contains thousands of technical solutions written by 3Com support engineers. Access Software Downloads Software Updates are the bug fix/maintenance releases for the version of software initially purchased with the product.
Contact Us 125 To send a product directly to 3Com for repair, you must first obtain a return 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. If your product is registered and under warranty, you can obtain an RMA number online at http://eSupport.3com.com/. First time users will need to apply for a user name and password.
126 APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT Country Telephone Number Country Telephone Number Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy 0800 297 468 0800 71429 800 17309 0800 113153 0800 917959 0800 182 1502 06800 12813 1 800 553 117 1800 945 3794 800 879489 Luxembourg Netherlands Norway Poland Portugal South Africa Spain Sweden Switzerland U.K.
Contact Us Country Telephone Number Country US and Canada Telephone Technical Support and Repair 1 800 876 3266 127 Telephone Number
128 APPENDIX E: OBTAINING SUPPORT FOR YOUR PRODUCT
GLOSSARY 802.11b The IEEE specification for wireless Ethernet which allows speeds of up to 11 Mbps. The standard provides for 1, 2, 5.5 and 11 Mbps data rates. The rates will switch automatically depending on range and environment. 802.11g The IEEE specification for wireless Ethernet which allows speeds of up to 54 Mbps. The standard provides for 6, 12, 24, 36, 48 and 54 Mbps data rates. The rates will switch automatically depending on range and environment.
130 GLOSSARY 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. Auto-negotiation is defined in the IEEE 802.3 standard for Ethernet and is an operation that takes place in a few milliseconds.
GLOSSARY DNS Server Address DSL modem 131 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” into your Internet browser), the user is sent to the proper IP address.
132 GLOSSARY Hub A device that regenerates LAN traffic so that the transmission distance of that signal can be extended. Hubs are similar to repeaters, in that they connect LANs of the same type; however they connect more LANs than a repeater and are generally more sophisticated. IEEE Institute of Electrical and Electronics Engineers. This American organization was founded in 1963 and sets standards for computers and communications. IETF Internet Engineering Task Force.
GLOSSARY LAN 133 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). MAC Media Access Control. A protocol specified by the IEEE for determining which devices have access to a network at any one time. MAC Address Media Access Control Address.
134 GLOSSARY 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. Server A computer in a network that is shared by multiple end stations. Servers provide end stations with access to shared network services such as computer files and printer queues. SSID Service Set Identifier.
GLOSSARY Traffic 135 The movement of data packets on a network. Universal Plug and Play Universal Plug and Play is a system which allows compatible applications 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. URL Filter A URL Filter is a feature of a firewall that allows it to stop its clients form browsing inappropriate Web sites. WAN Wide Area Network.
136 GLOSSARY WLAN WPA 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.
137 REGULATORY NOTICES For The OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router GENERAL STATEMENTS The 3Com OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router (WL-552) 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. This product does not contain any user serviceable components.
138 Complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. 3Com OfficeConnect ADSL Wireless 54Mbps 11g Firewall Router Model WL-552 INDUSTRY CANADA - RF COMPLIANCE This device complies with RSS 210 of Industry Canada.
139 Intended use: ADSL 802.11g/b Firewall Router For connection to ADSL networks NOTE: To ensure product operation is in compliance with local regulations, select the country in which the product is installed. Refer to 3CRWDR101A-75 User Guide. Česky [Czech] 3Com Coporation tímto prohlašuje, ze tento RLAN device je ve shodě se základními pozadavky a dalšími příslušnými ustanoveními směrnice 1999/5/ES.
140 Nederlands [Dutch] Hierbij verklaart 3Com Corporation dat het toestel RLAN device in overeenstemming is met de essentiële eisen en de andere relevante bepalingen van richtlijn 1999/5/EG. Malti [Maltese] Hawnhekk, 3Com Corporation, jiddikjara li dan RLAN device jikkonforma mal-htigijiet essenzjali u ma provvedimenti ohrajn relevanti li hemm fid-Dirrettiva 1999/5/EC.
141 前項合法通信,指依電信規定作業之無線電信。 低功率射頻電機須忍受合法通信或工業, 科學及醫療用 電波輻射性電機設備之干擾。 RTTE01: 1. 本機限在不干擾合法電台與不受被干擾保障條件下於室內使用 2.
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INDEX 128-bit WEP 46 128-bit WEP Screen 46 1483 Bridge Mode 55 64-bit WEP Screen 47 DNS Screen 55 DSL mode 29 Dynamic Domain Server (DDNS) Screen 70 Dynamic IP Address 34 Dynamic/Fixed IP for Bridge Mode Screen 35, 55 DYNDNS 70 A E Access Control Screen 62 Add PC Screen 63 Add Schedule Rule Screen 65 Addresses IP 85 Admin Password Screen 75 ADSL Status Screen 77 Advanced Screen 68 Automatic Addressing 87 Editing DHCP Clients List Screen 42 Encryption Screen 44 Encryption, disabling 45 Numbers B Back
142 INDEX configuring 56 MAC Address Filtering Screen 66 mode 30 N NAT (Network Address Translation) 68 NAT-T (NAT Traversal) 68 Network addresses 85 Networking wireless 81 NIC wireless 14 P 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 R Remote Admin 68 Reset to Factory Default Screen 73 Reset to Factory Defaults 80 Restart Router Screen 73 RFC 1483 Bridged Mode 32, 53 RFC 1483 Routed Mode 34 RIP (Routing I