LINKSYS WRKGV11 Wireless-G Broadband Router With 4- Port Switch User Manual WRK54G V1 1 wrk54g

LINKSYS LLC Wireless-G Broadband Router With 4- Port Switch WRK54G V1 1 wrk54g

User Manual

A Division of Cisco Systems, Inc.®Model No.Broadband RouterWireless-GWRK54GUser GuideWIRELESSGHz2.4802.11g
Wireless-G Broadband RouterCopyright and TrademarksSpecifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright © 2005 Cisco Systems, Inc. All rights reserved. Other brands and product names are trademarks or registered trademarks of their respective holders.How to Use This User GuideThis User Guide has been designed to make understanding networking with the Wireless-G Broadband Router easier than ever. Look for the following items when reading this User Guide:In addition to these symbols, there are definitions for technical terms that are presented like this:Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like this:Figure numbers and descriptions can also be found in the “List of Figures” section in the “Table of Contents”.This exclamation point means there is a caution or warning and is something that could damage your property or the Wireless-G Broadband Router.This checkmark means there is a note of interest and is something you should pay special attention to while using the Wireless-G Broadband Router.This question mark provides you with a reminder about something you might need to do while using the Wireless-G Broadband Router.word: definition.Figure 0-1: Sample Figure DescriptionWRK54G-UG-41115A KLWARNING: This product contains chemicals, including lead, known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling.
Wireless-G Broadband RouterTable of ContentsChapter 1: Introduction 1Welcome 1What’s in this Guide? 2Chapter 2: Planning Your Wireless Network 4Network Topology 4Ad-Hoc versus Infrastructure Mode 4Network Layout 5Chapter 3: Getting to Know the Wireless-G Broadband Router 6The Back 6The Front Panel 7Chapter 4: Connecting the Wireless-G Broadband Router 8Hardware Installation for Connection to the Broadband Router 8Chapter 5: Configuring the Wireless-G Broadband Router 10Overview 10The Setup Tab - Basic Setup 11The Setup Tab - DDNS 16The Setup Tab - MAC Address Clone 17The Setup Tab - Advanced Routing 18The Wireless Tab - Basic Wireless Settings 19The Wireless Tab - Wireless Security 20The Wireless Tab - Wireless Network Access 22The Wireless Tab - Advanced Wireless Settings 23The Security Tab - Filter 25The Security Tab - VPN Passthrough 26The Applications and Gaming Tab - Port Range Forwarding 27The Applications and Gaming Tab - Port Triggering 28The Applications and Gaming Tab - UPnP Forwarding 28The Applications and Gaming Tab - DMZ 29The Administration Tab - Management 30The Administration Tab - Log 31The Administration Tab - Factory Defaults 32The Administration Tab - Firmware Upgrade 32
Wireless-G Broadband RouterThe Status Tab - Router 33The Status Tab - Local Network 34The Status Tab - Wireless 34Appendix A: Troubleshooting 35Common Problems and Solutions 35Frequently Asked Questions 43Appendix B: Wireless Security 49Security Precautions 49Security Threats Facing Wireless Networks 49Appendix C: Upgrading Firmware 52Appendix D: Windows Help 53Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter 54Windows 98SE or Me Instructions 54Windows 2000 or XP Instructions 55For the Router’s Web-based Utility 55Appendix F: Glossary 56Appendix G: Specifications 63Appendix H: Warranty Information 65Appendix I: Regulatory Information 66Appendix J: Contact Information 68
Wireless-G Broadband RouterList of FiguresFigure 3-1: The Broadband Router’s Back Panel 6Figure 3-2: The Broadband Router’s Front Panel 7Figure 4-1: Connecting Your Internet Connection 8Figure 4-2: Connecting Your Network Devices 9Figure 4-3: Connecting the Power 9Figure 5-1: Password Screen 10Figure 5-2: Setup Tab - Basic Setup 11Figure 5-3: Static IP Connection Type 11Figure 5-4: PPPoE Connection Type 12Figure 5-5: PPPoE Connection Type 12Figure 5-6: PPTP Connection Type 12Figure 5-7: HeartBeat Signal Connection Type 13Figure 5-8: L2TP Connection Type 13Figure 5-9: Optional Settings 14Figure 5-10: Router IP 14Figure 5-11: Network Address Server Settings 15Figure 5-12: Time Setting 15Figure 5-13: Setup Tab - DDNS 16Figure 5-14: Setup Tab - TZO 16Figure 5-15: Setup Tab - MAC Address Clone 17Figure 5-16: Setup Tab - Advanced Routing 18Figure 5-17: Setup Tab - Routing Table 19Figure 5-18: Wireless Tab - Basic Wireless 19Figure 5-19: Wireless Tab - Wireless Security (WPA Pre-Shared Key) 20Figure 5-20: Wireless Tab - Wireless Security (WPA RADIUS) 20Figure 5-21: Wireless Tab - Wireless Security (WEP) 21Figure 5-22: Wireless Tab - Wireless Network Access 22Figure 5-23: Wireless Client MAC List 22Figure 5-24: Wireless Tab - Advanced Wireless Settings 23Figure 5-25: Security Tab - Filter 25
Wireless-G Broadband RouterFigure 5-26: List of PCs 25Figure 5-27: Security Tab - VPN Passthrough 26Figure 5-28: Applications and Gaming Tab - Port Range Forward 27Figure 5-29: Applications and Gaming Tab - Port Triggering 28Figure 5-30: Applications and Gaming Tab - UPnP Forwarding 28Figure 5-31: Applications and Gaming Tab - DMZ 29Figure 5-32: Administration Tab - Management 30Figure 5-33: Backup and Restore Configuration 30Figure 5-34: Administration Tab - Log 31Figure 5-35: The Administration Tab - Factory Defaults 32Figure 5-36: Administration Tab - Firmware Upgrade 32Figure 5-37: Status Tab - Router 33Figure 5-38: Status Tab - Local Network 34Figure 5-39: DHCP Client Table 34Figure 5-40: Status Tab - Wireless 34Figure C-1: Upgrade Firmware 52Figure E-1: IP Configuration Screen 54Figure E-2: MAC Address/Adapter Address 54Figure E-3: MAC Address/Physical Address 54Figure E-4: MAC Address Filter List 55Figure E-5: MAC Address Clone 55
1Chapter 1: IntroductionWelcomeWireless-G Broadband RouterChapter 1: IntroductionWelcomeThank you for choosing the Linksys Wireless-G Broadband Router. The Wireless-G Broadband Router will allow you to network wirelessly better than ever, sharing Internet access, files and fun, easily and securely.How does the Wireless-G Broadband Router do all of this? A router is a device that allows access to an Internet connection over a network. With the Wireless-G Broadband Router, this access can be shared over the four switched ports or via the wireless broadcast at either 11Mbps for Wireless-B or 54Mbps for Wireless-G. In addition, the WPA standard provides greater security opportunities while the whole network is protected through a NAT technology. All of these security features, as well as full configurability, are accessed through the easy-to-use browser-based utility.But what does all of this mean? Networks are useful tools for sharing computer resources. You can access one printer from different computers and access data located on another computer's hard drive. Networks are even used for playing multiplayer video games. So, networks are not only useful in homes and offices, they can also be fun.PCs on a wired network are connected with Ethernet cables, which is why the network is called “wired”. PCs equipped with wireless cards or adapters can communicate without cumbersome cables. By sharing the same wireless settings, within their transmission radius, they form a wireless network. The Wireless-G Broadband Router bridges wireless networks of both 802.11b and 802.11g standards and wired networks, allowing them to communicate with each other.With your networks all connected, wired, wireless, and the Internet, you can now share files and Internet access—and even play games. All the while, the Wireless-G Broadband Router protects your networks from unauthorized and unwelcome users.When you first install the Router, you should use the Setup CD-ROM to make sure all settings are correct. If you do not wish to run the Setup Wizard on the Setup CD-ROM, then use the instructions in this Guide to help you connect the Wireless-G Broadband Router, set it up, and configure it to bridge your different networks. These instructions should be all you need to get the most out of the Wireless-G Broadband Router.
2Chapter 1: IntroductionWhat’s in this Guide?Wireless-G Broadband RouterWhat’s in this Guide?This user guide covers the steps for setting up and using the Wireless-G Broadband Router.• Chapter 1: IntroductionThis chapter describes the Router’s applications and this User Guide.• Chapter 2: Planning Your Wireless NetworkThis chapter describes the basics of wireless networking.• Chapter 3: Getting to Know the Wireless-G Broadband RouterThis chapter describes the physical features of the Router.• Chapter 4: Connecting the Wireless-G Broadband RouterThis chapter instructs you on how to connect the Router to your network.• Chapter 5: Configuring the Wireless-G Broadband RouterThis chapter explains how to use the Web-Based Utility to configure the settings on the Wireless-G Broadband Router.• Appendix A: TroubleshootingThis appendix describes some problems and solutions, as well as frequently asked questions, regarding installation and use of the Wireless-G Broadband Router.• Appendix B: Wireless SecurityThis appendix explains the risks of wireless networking and some solutions to reduce the risks.• Appendix C: Upgrading FirmwareThis appendix instructs you on how to upgrade the firmware on the Router should you need to do so.• Appendix D: Windows HelpThis appendix describes how you can use Windows Help for instructions about networking, such as installing the TCP/IP protocol.• Appendix E: Finding the MAC Address and IP Address for your Ethernet Adapter.This appendix describes how to find the MAC address for your computer’s Ethernet adapter so you can use the MAC filtering and/or MAC address cloning feature of the Router.• Appendix F: GlossaryThis appendix gives a brief glossary of terms frequently used in networking.
3Chapter 1: IntroductionWhat’s in this Guide?Wireless-G Broadband Router• Appendix G: SpecificationsThis appendix provides the technical specifications for the Router.• Appendix H: Warranty InformationThis appendix supplies the warranty information for the Router.• Appendix I: Regulatory InformationThis appendix supplies the regulatory information regarding the Router.• Appendix J: Contact InformationThis appendix provides contact information for a variety of Linksys resources, including Technical Support.
4Chapter 2: Planning Your Wireless NetworkNetwork TopologyWireless-G Broadband RouterChapter 2: Planning Your Wireless NetworkNetwork TopologyA wireless network is exactly like a regular local network, except that each computer in your wireless network uses a wireless device to connect to the network. Computers in a wireless network share the same frequency channel and SSID, which is an identification name shared by the wireless devices belonging to the same wireless network.Ad-Hoc versus Infrastructure ModeUnlike wired networks, wireless networks have two different modes in which they may be set up: infrastructure and ad-hoc. An infrastructure configuration is a wireless network and wired network communicating to each other through an access point. An ad-hoc configuration is wireless-equipped computers communicating directly with each other. Choosing between these two modes depends on whether or not the wireless network needs to share data or peripherals with a wired network or not. If the computers on the wireless network need to be accessible by a wired network or need to share a peripheral, such as a printer, with the wired network computers, the wireless network should be set up in Infrastructure mode. The basis of Infrastructure mode centers around a wireless router or an access point, such as the Wireless-G Broadband Router, which serves as the main point of communications in a wireless network. The Router transmits data to PCs equipped with wireless network adapters, which can roam within a certain radial range of the Router. You can arrange the Router and multiple access points to work in succession to extend the roaming range, and you can set up your wireless network to communicate with your Ethernet hardware as well. If the wireless network is relatively small and needs to share resources only with the other computers on the wireless network, then the Ad-Hoc mode can be used. Ad-Hoc mode allows computers equipped with wireless transmitters and receivers to communicate directly with each other, eliminating the need for a wireless router or access point. The drawback of this mode is that in Ad-Hoc mode, wireless-equipped computers are not able to communicate with computers on a wired network. And, of course, communication between the wireless-equipped computers is limited by the distance and interference directly between them. Infrastructure: a wireless network that is bridged to a wired network via an access point.SSID: your wireless network’s name.Ad-hoc: a group of wireless devices communicating directly to each other (peer-to-peer) without the use of an access point.
5Chapter 2: Planning Your Wireless NetworkNetwork LayoutWireless-G Broadband RouterNetwork LayoutThe Wireless-G Broadband Router has been specifically designed for use with both your 802.11b and 802.11g products. Now, products using these standards can communicate with each other.The Wireless-G Broadband Router is compatible with all 802.11b and 802.11g adapters, such as the Notebook Adapters (WPC54G, WPC11) for your laptop computers, PCI Adapter (WMP54G, WMP11) for your desktop PC, and USB Adapter (WUSB54G, WUSB11) when you want to enjoy USB connectivity. The Broadband Router will also communicate with the Wireless PrintServer (WPS54GU2, WPS11) and Wireless Ethernet Bridges (WET54G, WET11).When you wish to connect your wireless network with your wired network, you can use the Wireless-G Broadband Router’s four network ports. To add more ports, any of the Wireless-G Broadband Router's network ports can be connected to any of Linksys's switches (such as the EZXS55W or EZXS88W).With these, and many other, Linksys products, your networking options are limitless. Go to the Linksys website at www.linksys.com for more information about products that work with the Wireless-G Broadband Router.
6Chapter 3: Getting to Know the Wireless-G Broadband RouterThe BackWireless-G Broadband RouterChapter 3: Getting to Know the Wireless-G Broadband RouterThe BackThe Broadband Router's ports, where the cables are connected, are located on the back panel.Reset Button There are two ways to reset the Broadband Router's factory defaults. Either press the ResetButton, for approximately five seconds, or restore the defaults from the Administration tab - Factory Defaults in the Broadband Router's Web-based Utility.Internet The Internet port is where you will connect your broadband Internet connection.1, 2, 3, 4 These ports (1, 2, 3, 4) connect the Broadband Router to your networked PCs and other Ethernet network devices.Power The Power port is where you will connect the power adapter.Important: Resetting the Broadband Router to factory defaults will erase all of your settings (WEP Encryption, Wireless and wired network settings, etc.) and replace them with the factory defaults. Do not reset the Broadband Router if you want to retain these settings.Figure 3-1: The Broadband Router’s Back Panel
7Chapter 3: Getting to Know the Wireless-G Broadband RouterThe Front PanelWireless-G Broadband RouterThe Front PanelThe Router’s LEDs, where information about network activity is displayed, are located on the front panel.Power Green. The Power LED lights up and will stay on while the Router is powered on. When the Router goes through its self-diagnostic mode during every boot-up, this LED will flash. When the diagnostic is complete, the LED will be solidly lit.DMZ Green. The DMZ LED indicates when the DMZ function is being used. This LED will remain lit as long as DMZ is enabled.WLAN Green. The WLAN LED lights up whenever there is a successful wireless connection. If the LED is flashing, the Broadband Router is actively sending or receiving data over the network.1, 2, 3, 4 Green. These numbered LEDs, corresponding with the numbered ports on the Broadband Router’s back panel, serve two purposes. If the LED is continuously lit, the Broadband Router is successfully connected to a device through that port. A flashing LED indicates network activity over that port.Internet Green. The Internet LED lights up when there is a connection made through the Internet port.Figure 3-2: The Broadband Router’s Front Panel
8Chapter 4: Connecting the Wireless-G Broadband RouterHardware Installation for Connection to the Broadband RouterWireless-G Broadband RouterChapter 4: Connecting the Wireless-G Broadband RouterHardware Installation for Connection to the Broadband Router1. Power down your network devices.2. Locate an optimum location for the Broadband Router. The best place for the Broadband Router is usually at the center of your wireless network, with line of sight to all of your mobile stations.3. Fix the direction of the antenna. Try to place the Router in a position that will best cover your wireless network. Normally, the higher you place the antenna, the better the performance will be.4. Connect a standard Ethernet network cable to the Broadband Router’s Internet port. Then, connect the other end of the Ethernet cable to your cable or DSL broadband modem.Figure 4-1: Connecting Your Internet Connection
9Chapter 4: Connecting the Wireless-G Broadband RouterHardware Installation for Connection to the Broadband RouterWireless-G Broadband Router5. Connect your network PCs or Ethernet devices to the Broadband Router’s numbered ports using standard Ethernet network cabling.6. Connect the AC power adapter to the Broadband Router's Power port and the other end into an electrical outlet. Only use the power adapter supplied with the Broadband Router. Use of a different adapter may result in product damage.Now that the hardware installation is complete, proceed to “Chapter 5: Configuring the Router”.Figure 4-2: Connecting Your Network DevicesFigure 4-3: Connecting the PowerIMPORTANT: Make sure you use the power adapter that is supplied with the Router. Use of a different power adapter could damage the Router.
10Chapter 6: Configuring the Wireless-G Broadband RouterOverviewWireless-G Broadband RouterChapter 5: Configuring the Wireless-G Broadband RouterOverviewWhen you first install the Router, you should use the Setup CD-ROM to make sure all settings are correct. If you do not wish to run the Setup Wizard on the Setup CD-ROM, then you can use the Web-based Utility to configure the Router. Advanced users can configure the Router’s advanced settings through the Web-based Utility.This chapter will describe each web page in the Utility and each page’s key functions. The utility can be accessed via your web browser through the use of a computer connected to the Router. For a basic network setup, most users will use these two screens of the Utility:• Basic Setup. On the Basic Setup screen, enter the settings provided by your ISP.• Management. Click the Administration tab and then the Management tab. The Router’s default password is admin. To secure the Router, change the Password from its default.There are six main tabs: Setup, Wireless, Security, Applications & Gaming, Administration, and Status. Additional tabs will be available after you click one of the main tabs.To access the Web-based Utility, launch Internet Explorer or Netscape Navigator, and enter the Router’s default IP address, 192.168.1.1, in the Address field. Then press Enter.A password request page will appear. (Windows XP users will see a similar screen.) Leave the User Name field blank. The first time you open the Web-based Utility, use the default password admin. (You can set a new password from the Administration tab’s Management screen.) Then click the OK button. HAVE YOU: Enabled TCP/IP on your PCs? PCs communicate over the network with this protocol. Refer to “Appendix D: Windows Help” for more information on TCP/IP.NOTE: When installing the Router for the first-time installation, you should use the Setup Wizard on the Setup CD-ROM. If you want to configure advanced settings, use this chapter to learn about the Web-based Utility.Figure 5-1: Password Screen
11Chapter 6: Configuring the Wireless-G Broadband RouterThe Setup Tab - Basic SetupWireless-G Broadband RouterThe Setup Tab - Basic SetupThe first screen that appears displays the Setup tab. This allows you to change the Broadband Router's general settings. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Internet SetupThe Internet Setup section configures the Broadband Router to your Internet connection. Most of this information can be obtained through your ISP.Internet Connection TypeChoose the type of Internet connection your ISP provides from the drop down menu.•DHCP. By default, the Router’s Internet Connection Type is set to Obtain an IP Automatically, which should be kept only if your ISP supports DHCP or you are connecting through a dynamic IP address.•Static IP. If you are required to use a permanent IP address to connect to the Internet, select Static IP.Internet IP Address. This is the Router’s IP address, when seen from the Internet. Your ISP will provide you with the IP Address you need to specify here. Subnet Mask. This is the Router’s Subnet Mask, as seen by users on the Internet (including your ISP). Your ISP will provide you with the Subnet Mask.Gateway. Your ISP will provide you with the Gateway Address, which is the ISP server’s IP address.DNS. Your ISP will provide you with at least one DNS (Domain Name System) Server IP Address.Figure 5-2: Setup Tab - Basic SetupFigure 5-3: Static IP Connection Type
12Chapter 6: Configuring the Wireless-G Broadband RouterThe Setup Tab - Basic SetupWireless-G Broadband Router•PPPoE. Some DSL-based ISPs use PPPoE (Point-to-Point Protocol over Ethernet) to establish Internet connections. If you are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoE. If they do, you will have to enable PPPoE.User Name and Password. Enter the User Name and Password provided by your ISP.Connect on Demand: Max Idle Time. You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. If you wish to activate Connect on Demand, click the radio button. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates.Keep Alive Option: Redial Period. If you select this option, the Router will periodically check your Internet connection. If you are disconnected, then the Router will automatically re-establish your connection. To use this option, click the radio button next to Keep Alive. In the Redial Period field, you specify how often you want the Router to check the Internet connection. The default Redial Period is 30 seconds.•RAS. (for SingTel Users) RAS is a service used in Singapore only. If you are using a RAS connection, check with your ISP for the necessary setup information.•PPTP. Point-to-Point Tunneling Protocol (PPTP) is a service that applies to connections in Europe only.Specify Internet IP Address. This is the Router’s IP address, as seen from the Internet. Your ISP will provide you with the IP Address you need to specify here. Subnet Mask. This is the Router’s Subnet Mask, as seen by users on the Internet (including your ISP). Your ISP will provide you with the Subnet Mask.Gateway. Your ISP will provide you with the Gateway Address.User Name and Password. Enter the User Name and Password provided by your ISP.Connect on Demand: Max Idle Time. You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. If you wish to activate Connect on Demand, click the radio button. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates.Figure 5-4: PPPoE Connection TypeFigure 5-6: PPTP Connection TypeFigure 5-5: PPPoE Connection Type
13Chapter 6: Configuring the Wireless-G Broadband RouterThe Setup Tab - Basic SetupWireless-G Broadband RouterKeep Alive Option: Redial Period. If you select this option, the Router will periodically check your Internet connection. If you are disconnected, then the Router will automatically re-establish your connection. To use this option, click the radio button next to Keep Alive. In the Redial Period field, you specify how often you want the Router to check the Internet connection. The default Redial Period is 30 seconds.•HeartBeat Signal. HeartBeat Signal (HBS) is a service that applies to connections in Australia only.User Name and Password. Enter the User Name and Password provided by your ISP.Heart Beat Server. This is the IP address that the Router has, when seen from the Internet. Your ISP will provide you with the IP Address you need to specify here.Connect on Demand: Max Idle Time. You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. If you wish to activate Connect on Demand, click the radio button. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates.Keep Alive Option: Redial Period. If you select this option, the Router will periodically check your Internet connection. If you are disconnected, then the Router will automatically re-establish your connection. To use this option, click the radio button next to Keep Alive. In the Redial Period field, you specify how often you want the Router to check the Internet connection. The default Redial Period is 30 seconds.•L2TP. Layer 2 Tunneling Protocol (L2TP) is a service that tunnels Point-to-Point Protocol (PPP) across the Internet. It is used mostly in European countries.User Name and Password. Enter the User Name and Password provided by your ISP.Connect on Demand and Max Idle Time. You can configure the Router to cut the Internet connection after it has been inactive for a specific period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. If you wish to activate Connect on Demand, click the radio button. If you want your Internet connection to remain on at all times, enter 0 in the Max Idle Time field. Otherwise, enter the number of minutes you want to have elapsed before your Internet access disconnects.Server IP Address. Enter the IP address of your ISP’s server. This is provided by your ISP.Figure 5-7: HeartBeat Signal Connection TypeFigure 5-8: L2TP Connection Type
14Chapter 6: Configuring the Wireless-G Broadband RouterThe Setup Tab - Basic SetupWireless-G Broadband RouterKeep Alive and Redial Period. This option keeps your Internet access connected indefinitely, even when it sits idle. If you select this option, the Router will periodically check your Internet connection. If the connection is down, then the Router will automatically re-establish the connection. To use this option, click the radio button next to Keep Alive. The default Redial Period is 30 seconds.When you are finished, click the Save Settings button. Then click the Status tab, and click the Connectbutton to start the connection.Optional SettingsSome of these settings may be required by your ISP. Verify with your ISP before making any changes.Router Name. In this field, you can type a name of up to 39 characters to represent the Router. Host Name/Domain Name. These fields allow you to supply a host and domain name for the Router. Some ISPs, usually cable ISPs, require these names as identification. You may have to check with your ISP to see if your broadband Internet service has been configured with a host and domain name. In most cases, leaving these fields blank will work. MTU. MTU is the Maximum Transmission Unit. It specifies the largest packet size permitted for Internet transmission. Thhis is disnabled by default. Enable this to manually enter the largest packet size that will be transmitted. The recommended size, entered in the Size field, is 1492. You should leave this value in the 1200 to 1500 range. To have the Router select the best MTU for your Internet connection, select Disable.Network SetupThe Network Setup section changes the settings on the network connected to the Router’s Ethernet ports. Wireless Setup is performed through the Wireless tab.Router IPThis presents both the Router’s IP Address and Subnet Mask as seen by your network.Network Address Server Settings (DHCP)The settings allow you to configure the Router’s Dynamic Host Configuration Protocol (DHCP) server function. The Router can be used as a DHCP server for your network. A DHCP server automatically assigns an IP address to each computer on your network. If you choose to enable the Router’s DHCP server option, you must configure all of your network PCs to connect to a DHCP server (the Router), and make sure there is no other DHCP server on your network. Figure 5-10: Router IPFigure 5-9: Optional Settings
15Chapter 6: Configuring the Wireless-G Broadband RouterThe Setup Tab - Basic SetupWireless-G Broadband RouterDHCP Server. DHCP is enabled by factory default. If you already have a DHCP server on your network, or you don’t want a DHCP server, then click the Disable radio button (no other DHCP features will be available).Starting IP Address. Enter a value for the DHCP server to start with when issuing IP addresses. Because the Router’s default IP address is 192.168.1.1, the Starting IP Address must be 192.168.1.2 or greater, but smaller than 192.168.1.253. The default Starting IP Address is 192.168.1.100.Maximum Number of DHCP Users. Enter the maximum number of PCs that you want the DHCP server to assign IP addresses to. This number cannot be greater than 253. The default is 50.Client Lease Time. The Client Lease Time is the amount of time a network user will be allowed connection to the Router with their current dynamic IP address. Enter the amount of time, in minutes, that the user will be “leased” this dynamic IP address. After the time is up, the user will be automatically assigned a new dynamic IP address. The default is 0 minutes, which means one day.Static DNS (1-3). The Domain Name System (DNS) is how the Internet translates domain or website names into Internet addresses or URLs. Your ISP will provide you with at least one DNS Server IP Address. If you wish to use another, type that IP Address in one of these fields. You can type up to three DNS Server IP Addresses here. The Router will use these for quicker access to functioning DNS servers.WINS. The Windows Internet Naming Service (WINS) converts NetBIOS names to IP addresses. If you use a WINS server, enter that server’s IP Address here. Otherwise, leave this blank. Time SettingChange the time zone in which your network functions from this pull-down menu.Figure 5-12: Time SettingFigure 5-11: Network Address Server Settings
16Chapter 6: Configuring the Wireless-G Broadband RouterThe Setup Tab - DDNSWireless-G Broadband RouterThe Setup Tab - DDNSThe Router offers a Dynamic Domain Name System (DDNS) feature. DDNS lets you assign a fixed host and domain name to a dynamic Internet IP address. It is useful when you are hosting your own website, FTP server, or other server behind the Router. Before you can use this feature, you need to sign up for DDNS service at www.dyndns.org or www.TZO.com, DDNS service providers.DDNSDDNS Service. If your DDNS service is provided by DynDNS.org, then select DynDNS.org in the drop-down menu. If your DDNS service is provided by TZO, then select TZO.com. The features available on the DDNS screen will vary, depending on which DDNS service provider you use. DynDNS.org User Name. Enter the User Name for your DDNS accountPassword. Enter the Password for your DDNS account.Host Name. The is the DDNS URL assigned by the DDNS service.Internet IP Address. This is the Router’s current IP Address as seen on the Internet.Status. This displays the status of the DDNS connection.TZO.com Email Address. Enter the Email Address of the service you set up with TZO.Password. Enter the TZO Password Key of the service you set up with TZO.Domain Name. Enter the Domain Name of the service you set up with TZO.Internet IP Address. The Router’s current Internet IP Address is displayed here. Because it is dynamic, this will change.Status. The status of the DDNS service connection is displayed here.Change these settings as described here and click the Update button to apply your changes or Cancel Changes to cancel your changes.Figure 5-13: Setup Tab - DDNSFigure 5-14: Setup Tab - TZO
17Chapter 6: Configuring the Wireless-G Broadband RouterThe Setup Tab - MAC Address CloneWireless-G Broadband RouterThe Setup Tab - MAC Address CloneA MAC address is a 12-digit code assigned to a unique piece of hardware for identification. Some ISPs will require you to register a MAC address in order to access the Internet. If you do not wish to re-register the MAC address with your ISP, you may assign the MAC address you have currently registered with your ISP to the Router with the MAC Address Clone feature.Enable/Disable. To have the MAC Address cloned, click the radio button beside Enable.User Defined Entry. Enter the MAC Address registered with your ISP here.Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.Figure 5-15: Setup Tab - MAC Address Clone
18Chapter 6: Configuring the Wireless-G Broadband RouterThe Setup Tab - Advanced RoutingWireless-G Broadband RouterThe Setup Tab - Advanced RoutingThis tab is used to set up the Router’s advanced functions. NAT allows mulitple uses to share one Internet connection. Dynamic Routing will automatically adjust how packets travel on your network. Static Routing sets up a fixed route to another network destination.NAT. If this Router is hosting your network’s connection to the Internet, select Enable. If another Router exists on your network, select Disable. When Router is chosen, Dynamic Routing will be enabled.Dynamic Routing.This feature enables the Router to automatically adjust to physical changes in the network’s layout and exchange routing tables with the other router(s). The Router determines the network packets’ route based on the fewest number of hops between the source and the destination. When setting this up, remember that the settings on the receiving and transmitting side must be the same.Transmit RIP Version. To use dynamic routing for transmission of network data, select the protocol you want: RIP1,RIP1-Compatible, or RIP2. RIP1-Compatible is included for use with non-Linksys routers.Receive RIP Version. To use dynamic routing for reception of network data, select the protocol you want, RIP1or RIP2.Static Routing. To set up a static route between the Router and another network, select a number from the Static Routing drop-down list. (A static route is a pre-determined pathway that network information must travel to reach a specific host or network.) Enter the information described below to set up a new static route. (Click the Delete This Entry button to delete a static route.)Enter Route Name. Enter a name for the Route here, using a maximum of 25 alphanumeric characters.Destination LAN IP. The Destination LAN IP is the address of the remote network or host to which you want to assign a static route.Subnet Mask. The Subnet Mask determines which portion of a Destination LAN IP address is the network portion, and which portion is the host portion. Default Gateway. This is the IP address of the gateway device that allows for contact between the Router and the remote network or host.Hop Count.This determines the maximum number of steps between network nodes that data packets will travel. A node is any device on the network, such as PCs, print servers, routers, etc.Interface.Select Local or Internet, depending on the location of the static route’s final destination.Figure 5-16: Setup Tab - Advanced Routing
19Chapter 6: Configuring the Wireless-G Broadband RouterThe Wireless Tab - Basic Wireless SettingsWireless-G Broadband RouterClick the Show Routing Table button to view the Static Routes you’ve already set up.Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.The Wireless Tab - Basic Wireless SettingsThe basic settings for wireless networking are set on this screen.Wireless Network Mode. From this drop-down menu, you can select the wireless standards running on your network. If you have both 802.11g and 802.11b devices in your network, keep the default setting, Mixed. If you have only 802.11g devices, select G-Only. If you have only 802.11b devices, select B-Only. If you do not have any 802.11g and 802.11b devices in your network, select Disable.Wireless Network Name (SSID). The SSID is the network name shared among all points in a wireless network. The SSID must be identical for all devices in the wireless network. It is case-sensitive and must not exceed 32 characters (use any of the characters on the keyboard). Make sure this setting is the same for all points in your wireless network. For added security, you should change the default SSID (linksys) to a unique name.Wireless Channel. Select the appropriate channel from the list provided to correspond with your network settings. All devices in your wireless network must be broadcast on the same channel in order to function correctly. Wireless SSID Broadcast. When wireless clients survey the local area for wireless networks to associate with, they will detect the SSID broadcast by the Router. To broadcast the Router's SSID, keep the default setting, Enable. If you do not want to broadcast the Router's SSID, then select Disable.Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.Figure 5-18: Wireless Tab - Basic Wireless Figure 5-17: Setup Tab - Routing Table
20Chapter 6: Configuring the Wireless-G Broadband RouterThe Wireless Tab - Wireless SecurityWireless-G Broadband RouterThe Wireless Tab - Wireless SecurityThe Wireless Security settings configure the security of your wireless network. There are three wireless security mode options supported by the Router: WPA Pre-Shared Key, WPA RADIUS, and WEP. (WPA stands for Wi-Fi Protected Access, which is a security standard stronger than WEP encryption. WEP stands for Wired Equivalent Privacy, while RADIUS stands for Remote Authentication Dial-In User Service.) These three are briefly discussed here. For detailed instructions on configuring wireless security for the Router, turn to “Appendix B: Wireless Security.”WPA Pre-Shared Key. WPA gives you one encryption method, TKIP, with dynamic encryption keys. Select the type of algorithm, TKIP. Enter a WPA Shared Key of 8-32 characters. Then enter a Group Key Renewal period, which instructs the Router how often it should change the encryption keys.WPA RADIUS. This option features WPA used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.) First, select the type of WPA algorithm you want to use, TKIP.Enter the RADIUS server’s IP Address and port number, along with a key shared between the Router and the server. Last, enter a Group Key Renewal period, which instructs the Router how often it should change the encryption keys.Figure 5-19: Wireless Tab - Wireless Security (WPA Pre-Shared Key)Figure 5-20: Wireless Tab - Wireless Security (WPA RADIUS)IMPORTANT: If you are using WPA, always remember that each device in your wireless network MUST use the same WPA method and shared key, or else the network will not function properly.
21Chapter 6: Configuring the Wireless-G Broadband RouterThe Wireless Tab - Wireless SecurityWireless-G Broadband RouterWEP. WEP is a basic encryption method, which is not as secure as WPA. To indicate which WEP key to use, select the appropriate Default Transmit Key number. Then, select the level of WEP encryption, 64 bits 10 hex digits or 128 bits 26 hex digits. Higher encryption levels offer higher levels of security, but due to the complexity of the encryption, they may decrease network performance.Instead of manually entering WEP keys, you can enter a Passphrase to generate one or more WEP keys. The Passphrase is case-sensitive and should have no more than 32 alphanumeric characters. If you want to use a Passphrase, then enter it in the Passphrase field and click the Generate button. If you want to enter the WEP key(s) manually, then enter it in the Key 1-4 field(s). (Do not leave a field blank, and do not enter all zeroes; they are not valid key values.) If you are using 64-bit WEP encryption, the key must be exactly 10 hexadecimal characters in length. If you are using 128-bit WEP encryption, the key must be exactly 26 hexadecimal characters in length. Valid hexadecimal characters are “0” to “9” and “A” to “F”.Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. For detailed instructions on configuring wireless security for the Router, turn to “Appendix B: Wireless Security.”Figure 5-21: Wireless Tab - Wireless Security (WEP)IMPORTANT: If you are using WEP encryption, always remember that each device in your wireless network MUST use the same WEP encryption method and encryption key, or else your wireless network will not function properly.
22Chapter 6: Configuring the Wireless-G Broadband RouterThe Wireless Tab - Wireless Network AccessWireless-G Broadband RouterThe Wireless Tab - Wireless Network AccessWireless access can be filtered by using the MAC addresses of the wireless devices transmitting within your network’s radius. MAC Filter. To filter wireless users by MAC Address, either permitting or blocking access, click Enable. If you do not wish to filter users by MAC Address, select Disable.Deny. Clicking this button will block the wireless access by MAC Address.Allow. Clicking this button will allow the wireless access by MAC Address.MAC 1-20. Enter the MAC addresses of the designated computers. For a more convenient way to add MAC addresses, click the Select MAC Address From Networked Computers button. The Wireless Client MAC List screen will appear. Select the MAC Addresses you want. Then, click the Save Changes button. Click the Cancel Changes button to return to the previous screen.If you want detailed instructions on how to find the MAC address of a specific computer, refer to “Appendix E: Finding the MAC Address or IP Address for Your Ethernet Adapter.”Select MAC Address from Networked Computers. Clicking this button will open the Wireless Client MAC List. On this screen, you can view users, by MAC Address, to whom you wish to provide or block access.Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.Figure 5-23: Wireless Client MAC ListFigure 5-22: Wireless Tab - Wireless Network Access
23Chapter 6: Configuring the Wireless-G Broadband RouterThe Wireless Tab - Advanced Wireless SettingsWireless-G Broadband RouterThe Wireless Tab - Advanced Wireless SettingsThis tab is used to set up the Router’s advanced wireless functions. These settings should only be adjusted by an expert administrator as incorrect settings can reduce wireless performance.Basic Rate. The Basic Rate setting is not actually one rate of transmission but a series of rates at which the Router can transmit. The Router will advertise its Basic Rate to the other wireless devices in your network, so they know which rates will be used. The Router will also advertise that it will automatically select the best rate for transmission. The default setting is Default, when the Router can transmit at all standard wireless rates (1-2Mbps, 5.5Mbps, 11Mbps, 18Mbps, and 24Mbps). Other options are 1-2Mbps, for use with older wireless technology, and All, when the Router can transmit at all wireless rates. The Basic Rate is not the actual rate of data transmission. If you want to specify the Router’s rate of data transmission, configure the Transmission Rate setting.Control Tx Rate. The rate of data transmission should be set depending on the speed of your wireless network. You can select from a range of transmission speeds, or you can select Auto to have the Router automatically use the fastest possible data rate and enable the Auto-Fallback feature. Auto-Fallback will negotiate the best possible connection speed between the Router and a wireless client. The default value is Auto.Preamble Type. The preamble defines the length of the CRC block for communication between the Router and the roaming Network Card. (High network traffic areas should use the shorter preamble type.) Select the appropriate preamble type, Long Preamble(default) or Short Preamble.Authentication Type. The default is set to Auto, which allows either Open System or Shared Key authentication to be used. With Open System authentication, the sender and the recipient do NOT use a WEP key for authentication. With Shared Key authentication, the sender and recipient use a WEP key for authentication.CTS Protection Mode. CTS (Clear-To-Send) Protection Mode should remain disabled unless you are having severe problems with your Wireless-G products not being able to transmit to the Router in an environment with heavy 802.11b traffic. This function boosts the Router’s ability to catch all Wireless-G transmissions but will severely decrease performance.Beacon Interval. The default value is 100. Enter a value between 1 and 65,535 milliseconds. The Beacon Interval value indicates the frequency interval of the beacon. A beacon is a packet broadcast by the Router to synchronize the wireless network.DTIM Interval. This value, between 1 and 255, indicates the interval of the Delivery Traffic Indication Message (DTIM). A DTIM field is a countdown field informing clients of the next window for listening to broadcast and multicast messages. When the Router has buffered broadcast or multicast messages for associated clients, it sends the next DTIM with a DTIM Interval value. Its clients hear the beacons and awaken to receive the broadcast and multicast messages. The default value is 1.Figure 5-24: Wireless Tab - Advanced Wireless Settings
24Chapter 6: Configuring the Wireless-G Broadband RouterThe Wireless Tab - Advanced Wireless SettingsWireless-G Broadband RouterFragmentation Threshold. This value specifies the maximum size for a packet before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold too low may result in poor network performance. Only minor reduction of the default value is recommended. In most cases, it should remain at its default value of 2346.RTS Threshold. Should you encounter inconsistent data flow, only minor reduction of the default value, 2347, is recommended. If a network packet is smaller than the preset RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router sends Request to Send (RTS) frames to a particular receiving station and negotiates the sending of a data frame. After receiving an RTS, the wireless station responds with a Clear to Send (CTS) frame to acknowledge the right to begin transmission. The RTS Threshold value should remain at its default value of 2347.Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.
25Chapter 6: Configuring the Wireless-G Broadband RouterThe Security Tab - FilterWireless-G Broadband RouterThe Security Tab - FilterFilters block specific internal users from accessing the Internet. From the Filters tab, you can set up a filter through an IP address or a network port number.Filter IP Address Range. To set up a filter using IP addresses, enter the range of IP addresses you wish to filter in the IP address fields. Users who have filtered IP addresses will not be able to access the Internet at all. If you only want to filter one IP address instead of a range of IP addresses, enter the same value into both fields. For instance, if you wish to filter the PC with the IP address of 192.168.1.5, enter 5 into both fields on one line: 192.168.1.5 ~ 192.168.1.5. Filter Port Range. To filter users by network port number, select a protocol, then enter a network port number or a range of network ports. Enter the port numbers you want to filter in the port numbers fields. Users connected to the Router will no longer be able to access any port number listed there.Filter MAC Address. This feature filters the Ethernet adapter’s specific MAC address from going out to the Internet. To check your Ethernet adapter’s MAC address, you can run winipcfg or ipconfig in the command prompt, depending on which Windows operating system you are using. To set the MAC filter, click the Edit MAC Filter Setting button. When the screen appears, select the range in the drop-down menu, and in a MAC number field, enter the 12-digit MAC address you want to filter. Click Apply to save the changes, or Undo to undo the changes. For information on obtaining a MAC address, go to Appendix E: Finding the MAC Address and IP Address for your Ethernet Adapter.Block WAN Requests. Enable the Block WAN Request feature by checking the radio button beside Block Anonymous Internet Requests and you can prevent your network from being pinged or detected by other Internet users. Click Disabled it you want to allow anonymous Internet requests.The Block WAN Request feature also reinforces your network security by hiding your network ports. Both functions of the Block WAN Request feature make it more difficult for outside users to work their way into your network. This feature is enabled by default.Filter Multicast. This feature allows for multiple transmissions to specific recipients at the same time. Select Enabled to support the feature, or Disabled to keep the Router from multicasting. Filter Internet NAT Redirection. This feature uses Port Forwarding to prevent access to local servers from your local networked computers.Filter IDENT (Port 113). This feature keeps port 113 from being scanned by devices outside of your local network. SelectEnabled to filter port 113, or select Disabled to allow port 113 to be scanned by devices on the Internet.Change these settings as described here and click the Save Settings button to apply your changes or CancelChanges to cancel your changes.Figure 5-25: Security Tab - FilterFigure 5-26: List of PCs
26Chapter 6: Configuring the Wireless-G Broadband RouterThe Security Tab - VPN PassthroughWireless-G Broadband RouterThe Security Tab - VPN PassthroughUse the settings on this tab to allow VPN tunnels in either IPSec or PPTP protocols to pass through the Router’s firewall.IPSec Passthrough. Internet Protocol Security (IPSec) is a suite of protocols used to implement secure exchange of packets at the IP layer. To allow IPSec tunnels to pass through the Router, click the radio button beside Enabled. IPSec Passthrough is enabled by default. Click Disabled to disable the function.PPPoE Passthrough. Point-to-Point Protocol over Ethernet allows your PC(s) to use the PPPoE client software provided by your ISP. Some ISPs may request that you use this feature.To allow allow PPPoE Passthrough, click the radio button beside Enabled. PPPoE Passthrough is enabled by default. Click Disabled to disable the function.PPTP Passthrough. Point-to-Point Tunneling Protocol is the method used to enable VPN sessions to a Windows NT 4.0 or 2000 server. To allow PPTP tunnels to pass through the Router, click the radio button beside Enabled.PPTP Passthrough is enabled by default. Click Disabled to disable the function.Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes.Figure 5-27: Security Tab - VPN Passthrough
27Chapter 6: Configuring the Wireless-G Broadband RouterThe Applications and Gaming Tab - Port Range ForwardingWireless-G Broadband RouterThe Applications and Gaming Tab - Port Range ForwardingThe Applications and Gaming Tab allows you to set up public services on your network, such as web servers, ftp servers, e-mail servers, or other specialized Internet applications. (Specialized Internet applications are any applications that use Internet access to perform functions such as videoconferencing or online gaming. Some Internet applications may not require any forwarding.) To forward a port, enter the information on each line for the criteria required. Descriptions of each criteria are described here.Application. In this field, enter the name you wish to give the application. Each name can be up to 12 characters.Start/End. This is the port range. Enter the number that starts the port range under Start and the number that ends the range under End.Protocol. Enter the protocol used for this application, either TCP or UDP, or Both.IP Address. For each application, enter the IP Address of the PC running the specific application.Enable. Click the Enable checkbox to enable port forwarding for the relevant application.Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Figure 5-28: Applications and Gaming Tab - Port Range Forward
28Chapter 6: Configuring the Wireless-G Broadband RouterThe Applications and Gaming Tab - Port TriggeringWireless-G Broadband RouterThe Applications and Gaming Tab - Port TriggeringPort TriggeringPort Triggering is used for special applications that can request a port to be opened on demand. For this feature, the Gateway will watch outgoing data for specific port numbers. The Gateway will remember the IP address of the computer that sends a transmission requesting data, so that when the requested data returns through the Gateway, the data is pulled back to the proper computer by way of IP address and port mapping rules. Application. Enter the name you wish to give each application.Start Port and End Port. Enter the starting and ending Triggered Range numbers and the Forwarded Range numbers of the port you wish to forward. When finished making your changes on this tab, click the Save Settings button to save these changes, or click the Cancel Changes button to undo your changes. The Applications and Gaming Tab - UPnP ForwardingUPnP ForwardingThe UPnP Forwarding screen provides options for customization of port services for common applications. When users send this type of request to your network via the Internet, the Gateway will forward those requests to the appropriate computer. Any computer whose port is being forwarded should have its DHCP client function disabled and should have a new static IP address assigned to it because its IP address may change when using the DHCP function.Choose or enter the Application in the field. Then, enter the External and Internal Port numbers in the fields. Select the type of protocol you wish to use for each application: TCP or UDP. Enter the IP Address in the field. Click Enabled to enable UPnP Forwarding for the chosen application.When finished making your changes on this tab, click the Save Settings button to save these changes, or click the Cancel Changes button to undo your changes. Figure 5-30: Applications and Gaming Tab - UPnP ForwardingFigure 5-29: Applications and Gaming Tab - Port Triggering
29Chapter 6: Configuring the Wireless-G Broadband RouterThe Applications and Gaming Tab - DMZWireless-G Broadband RouterThe Applications and Gaming Tab - DMZThe DMZ feature allows one network user to be exposed to the Internet for use of a special-purpose service such as Internet gaming or videoconferencing. DMZ hosting forwards all the ports at the same time to one PC. The Port Range Forward feature is more secure because it only opens the ports you want to have opened, while DMZ hosting opens all the ports of one computer, exposing the computer to the Internet. Any PC whose port is being forwarded must have its DHCP client function disabled and should have a new static IP address assigned to it because its IP address may change when using the DHCP function.To expose one PC, select Enable. Then, enter the computer's IP address in the DMZ Host IP Address field.Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Figure 5-31: Applications and Gaming Tab - DMZ
30Chapter 6: Configuring the Wireless-G Broadband RouterThe Administration Tab - ManagementWireless-G Broadband RouterThe Administration Tab - ManagementThis section of the Administration tab allows the network’s administrator to manage specific Router functions for access and security.Local Router Access. You can change the Router’s password from here. Enter a new Router password and then type it again in the Re-enter to confirm field to confirm.Remote Router Access. This feature allows you to access the Router from a remote location, via the Internet. Remote Upgrade allows you to upgrade your firmware from a remote location. To enable Remote Upgrade, select Enabled. Remote Administration allows you to manage the Router from a remote location via the Internet. To enable Remote Administration, select Enabled. Enter the Administration Port number you will use to remotely access the Router.UPnP. UPnP allows Windows XP and Windows Me to automatically configure the Router for various Internet applications, such as gaming and videoconferencing.To enable UPnP, check the Enabled box.Allow Users to Make Configuration Changes. When enabled, this feature allows you to make manual changes while still using the UPnP feature.Allow Users to Disable Internet Access. When enabled, this feature allows you to prohibit any and all Internet connections.Backup and Restore. Click this button to back up or restore your configuration. Click the Backup button to back up the configuration. To Restore your configuration, click the Browse button to find the file, then click the Restore button.Figure 5-32: Administration Tab - ManagementFigure 5-33: Backup and Restore ConfigurationIMPORTANT: Enabling remote Administration allows anyone with access to your password to configure the Router from somewhere else on the Internet.
31Chapter 6: Configuring the Wireless-G Broadband RouterThe Administration Tab - LogWireless-G Broadband RouterThe Administration Tab - LogThe Router can keep logs of all traffic for your Internet connection. To disable the Log function, keep the default setting, No. To monitor traffic between the network and the Internet, select Yes. Enter the IP Address of the PC where the Logviewer is installed in the Logviewer IP Address field.When you wish to view the logs, click Incoming Log or Outgoing Log, depending on which you wish to view. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Figure 5-34: Administration Tab - Log
32Chapter 6: Configuring the Wireless-G Broadband RouterThe Administration Tab - Factory DefaultsWireless-G Broadband RouterThe Administration Tab - Factory DefaultsClick the Yes radio button to reset all configuration settings to their default values, and then click the Save Settings button. Any settings you have saved will be lost when the default settings are restored. This feature is disabled, with No selected, by default.The Administration Tab - Firmware UpgradeFirmware can be upgraded by clicking the Upgrade button after browsing for the firmware, which you can download from the Linksys website. Do not upgrade your firmware unless you are experiencing problems with the Broadband Router. For more information about upgrading firmware, refer to “Appendix C: Upgrading Firmware”.Figure 5-36: Administration Tab - Firmware UpgradeFigure 5-35: The Administration Tab - Factory Defaults
33Chapter 6: Configuring the Wireless-G Broadband RouterThe Status Tab - RouterWireless-G Broadband RouterThe Status Tab - RouterThe Router screen on the Status Tab displays the Router’s current status. The screen will vary depending on the Internet Connection Type selected on the Setup screen.Firmware Version. This is the Router’s current firmware. Current Time. The current time and date are displayed here.MAC Address. This is the Router’s MAC Address, as seen by your ISP.Login Type. The status of the connection is displayed only for PPPoE, RAS, PPTP, or Heart Beat Signal connections. For these dial-up style connections, there is a Connect button to click if there is no connection and you want to establish an Internet connection, and a Disconnect button to disconnect the Internet connection.Internet IP Address. The Router’s Internet IP Address is displayed here.Subnet Mask and Default Gateway. The Router’s Subnet Mask and Default Gateway address are displayed here for DHCP and static IP connections.DNS 1, 2, 3. Shown here are the DNS (Domain Name System) IP addresses currently used by the Router.MTU. The current MTU settings, which were set on the Basic Setup screen, are displayed here.DHCP Release. Available for a DHCP connection, click the DHCP Release button to release the current IP address of the device connected to the Router’s Internet port.DHCP Renew. Available for a DHCP connection, click the DHCP Renew button to replace the current IP address—of the device connected to the Router’s Internet port—with a new IP address.Figure 5-37: Status Tab - Router
34Chapter 6: Configuring the Wireless-G Broadband RouterThe Status Tab - Local NetworkWireless-G Broadband RouterThe Status Tab - Local NetworkThe Local Network screen on the Status Tab displays the status of your network.MAC Address. This is the Router’s MAC Address, as seen on your local, Ethernet network.IP Address. This shows the Router’s IP Address, as it appears on your local, Ethernet network.Subnet Mask. When the Router is using a Subnet Mask, it is shown here.DHCP Server. If you are using the Router as a DHCP server, that will be displayed here.DHCP Client Table. Clicking this button will open a screen to show you which PCs are utilizing the Router as a DHCP server. You can delete PCs from that list and sever their connections by checking a Delete box and clicking the Delete button.The Status Tab - WirelessThe Wireless screen on the Status Tab displays the status of your wireless network.MAC Address. This is the Router’s MAC Address, as seen on your local, wireless network.Mode. As selected from the Wireless tab, this will display the wireless mode (Mixed, G-Only, or Disabled) used by the network.SSID. As entered on the Wireless tab, this will display the wireless network name or SSID.DHCP Server. If you are using the Router as a DHCP server, that will be displayed here.Channel. As entered on the Wireless tab, this will display the channel on which your wireless network is broadcasting.Encryption Function. As selected on the Security Tab, this will display what type of encryption the Router uses for security.Figure 5-40: Status Tab - WirelessFigure 5-39: DHCP Client TableFigure 5-38: Status Tab - Local Network
35Appendix A: TroubleshootingCommon Problems and SolutionsWireless-G Broadband RouterAppendix A: TroubleshootingThis appendix consists of two parts: “Common Problems and Solutions” and “Frequently Asked Questions.” Provided are possible solutions to problems that may occur during the installation and operation of the Router. Read the descriptions below to help you solve your problems. If you can’t find an answer here, check the Linksys website at www.linksys.com.Common Problems and Solutions1. I’m trying to access the Router’s Web-based Utility, but I do not see the login screen. Instead, I see a screen saying, “404 Forbidden.”If you are using Windows Explorer, perform the following steps until you see the Web-based Utility’s login screen (Netscape Navigator will require similar steps):1. Click File. Make sure Work Offline is NOT checked.2. Press CTRL + F5. This is a hard refresh, which will force Windows Explorer to load new webpages, not cached ones.3. Click Tools. Click Internet Options. Click the Security tab. Click the Default level button. Make sure the security level is Medium or lower. Then click the OK button.2. I need to set a static IP address on a PC.You can assign a static IP address to a PC by performing the following steps:• For Windows 98SE and Me:1. Click Start,Settings, and Control Panel. Double-click Network.2. In The following network components are installed box, select the TCP/IP-> associated with your Ethernet adapter. If you only have one Ethernet adapter installed, you will only see one TCP/IP line with no association to an Ethernet adapter. Highlight it and click the Properties button.3. In the TCP/IP properties window, select the IP address tab, and select Specify an IP address. Enter a unique IP address that is not used by any other computer on the network connected to the Router. Make sure that each IP address is unique for each PC or network device.4. Click the Gateway tab, and in the New Gateway prompt, enter 192.168.1.1, which is the default IP address of the Router. Click the Add button to accept the entry.5. Click the DNS tab, and make sure the DNS Enabled option is selected. Enter the Host and Domain names (e.g., John for Host and home for Domain). Enter the DNS entry provided by your ISP. If your ISP has not provided the DNS IP address, contact your ISP to get that information or go to its website for the information.6. Click the OK button in the TCP/IP properties window, and click Close or the OK button for the Network window.7. Restart the computer when asked.
36Appendix A: TroubleshootingCommon Problems and SolutionsWireless-G Broadband Router• For Windows 2000:1. Click Start,Settings, and Control Panel. Double-click Network and Dial-Up Connections.2. Right-click the Local Area Connection that is associated with the Ethernet adapter you are using, and select the Properties option.3. In the Components checked are used by this connection box, highlight Internet Protocol (TCP/IP),and click the Properties button. Select Use the following IP address option.4. Enter a unique IP address that is not used by any other computer on the network connected to the Router. 5. Enter the Subnet Mask, 255.255.255.0.6. Enter the Default Gateway, 192.168.1.1 (Router’s default IP address).7. Toward the bottom of the window, select Use the following DNS server addresses, and enter the Preferred DNS server and Alternative DNS server (provided by your ISP). Contact your ISP or go on its website to find the information.8. Click the OK button in the Internet Protocol (TCP/IP) Properties window, and click the OK button in the Local Area Connection Properties window.9. Restart the computer if asked.• For Windows XP:The following instructions assume you are running Windows XP with the default interface. If you are using the Classic interface (where the icons and menus look like previous Windows versions), please follow the instructions for Windows 2000.1. Click Start and Control Panel.2. Click the Network and Internet Connections icon and then the Network Connections icon.3. Right-click the Local Area Connection that is associated with the Ethernet adapter you are using, and select the Properties option.4. In the This connection uses the following items box, highlight Internet Protocol (TCP/IP). Click the Properties button.5. Enter a unique IP address that is not used by any other computer on the network connected to the Router. 6. Enter the Subnet Mask, 255.255.255.0.7. Enter the Default Gateway, 192.168.1.1 (Router’s default IP address).8. Toward the bottom of the window, select Use the following DNS server addresses, and enter the Preferred DNS server and Alternative DNS server (provided by your ISP). Contact your ISP or go on its website to find the information.9. Click the OK button in the Internet Protocol (TCP/IP) Properties window. Click the OK button in the Local Area Connection Properties window.3. I want to test my Internet connection.A Check your TCP/IP settings. For Windows 98SE, Me, 2000, and XP:
37Appendix A: TroubleshootingCommon Problems and SolutionsWireless-G Broadband Router• Refer to “Chapter 5: Configuring the PCs” for details. Make sure Obtain IP address automatically is selected in the settings.B Open a command prompt.For Windows 98SE and Me: • Click Start and Run. In the Open field, type command. Press the Enter key or click the OK button.For Windows 2000 and XP:• Click Start and Run. In the Open field, type cmd. Press the Enter key or click the OK button. In the command prompt, type ping 192.168.1.1 and press the Enter key. • If you get a reply, the computer is communicating with the Router.• If you do NOT get a reply, please check the cable, and make sure Obtain an IP address automatically is selected in the TCP/IP settings for your Ethernet adapter.C In the command prompt, type ping followed by your Internet or WAN IP address and press the Enter key. The Internet or WAN IP Address can be found on the Status screen of the Router’s web-based utility. For example, if your Internet or WAN IP address is 1.2.3.4, you would enter ping 1.2.3.4 and press the Enter key.• If you get a reply, the computer is connected to the Router.• If you do NOT get a reply, try the ping command from a different computer to verify that your original computer is not the cause of the problem.D In the command prompt, type ping www.yahoo.com and press the Enter key. • If you get a reply, the computer is connected to the Internet. If you cannot open a webpage, try the ping command from a different computer to verify that your original computer is not the cause of the problem.• If you do NOT get a reply, there may be a problem with the connection. Try the ping command from a different computer to verify that your original computer is not the cause of the problem.4. I am not getting an IP address on the Internet with my Internet connection.• Refer to “Problem #2, I want to test my Internet connection” to verify that you have connectivity.• If you need to register the MAC address of your Ethernet adapter with your ISP, please see “Appendix E: Finding the MAC address and IP Address for Your Ethernet Adapter.” If you need to clone the MAC address of your Ethernet adapter onto the Router, see the System section of “Chapter 6: Configuring the Wireless-G Broadband Router” for details.• Make sure you are using the right Internet connection settings. Contact your ISP to see if your Internet connection type is DHCP, Static IP Address, or PPPoE (commonly used by DSL consumers). Please refer to the Setup section of “Chapter 6: Configuring the Wireless-G Broadband Router” for details on Internet connection settings.• Make sure you have the right cable. Check to see if the Internet column has a solidly lit Link/Act LED. • Make sure the cable connecting from your cable or DSL modem is connected to the Router’s Internet port. Verify that the Status page of the Router’s web-based utility shows a valid IP address from your ISP.• Turn off the computer, Router, and cable/DSL modem. Wait 30 seconds, and then turn on the Router, cable/DSL modem, and computer. Check the Status tab of the Router’s web-based utility to see if you get an IP address.
38Appendix A: TroubleshootingCommon Problems and SolutionsWireless-G Broadband Router5. I am not able to access the Setup page of the Router’s web-based utility.• Refer to “Problem #2, I want to test my Internet connection” to verify that your computer is properly connected to the Router.• Refer to “Appendix E: Finding the MAC Address and IP address for Your Ethernet Adapter” to verify that your computer has an IP Address, Subnet Mask, Gateway, and DNS.• Set a static IP address on your system; refer to “Problem #1: I need to set a static IP address.”• Refer to “Problem #10: I need to remove the proxy settings or the dial-up pop-up window (for PPPoE users).”6. I need to set up a server behind my Router and make it available to the public.To use a server like a web, ftp, or mail server, you need to know the respective port numbers they are using. For example, port 80 (HTTP) is used for web; port 21 (FTP) is used for FTP, and port 25 (SMTP outgoing) and port 110 (POP3 incoming) are used for the mail server. You can get more information by viewing the documentation provided with the server you installed.Follow these steps to set up port forwarding through the Router’s web-based utility. We will be setting up web, ftp, and mail servers.1. Access the Router’s web-based utility by going to http://192.168.1.1 or the IP address of the Router. Go to the Applications & Gaming => Port Forwarding tab. 2. Enter any name you want to use for the Customized Application.3. Enter the External Port range of the service you are using. For example, if you have a web server, you would enter the range 80 to 80. 4. Check the protocol you will be using, TCP and/or UDP. 5. Enter the IP address of the PC or network device that you want the port server to go to. For example, if the web server’s Ethernet adapter IP address is 192.168.1.100, you would enter 100 in the field provided. Check “Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter” for details on getting an IP address.6. Check the Enable option for the port services you want to use. Consider the example below:When you have completed the configuration, click the Save Settings button.Application Start and End Protocol IP Address EnabledWeb server 80 to 80 Both 192.168.1.100 XFTP server 21 to 21 TCP 192.168.1.101 XSMTP (outgoing) 25 to 25 Both 192.168.1.102 XPOP3 (incoming) 110 to 110 Both 192.168.1.102 X
39Appendix A: TroubleshootingCommon Problems and SolutionsWireless-G Broadband Router7. I need to set up online game hosting or use other Internet applications.If you want to play online games or use Internet applications, most will work without doing any port forwarding or DMZ hosting. There may be cases when you want to host an online game or Internet application. This would require you to set up the Router to deliver incoming packets or data to a specific computer. This also applies to the Internet applications you are using. The best way to get the information on what port services to use is to go to the website of the online game or application you want to use. Follow these steps to set up online game hosting or use a certain Internet application:1. Access the Router’s web interface by going to http://192.168.1.1 or the IP address of the Router. Go to the Applications & Gaming => Port Forwarding tab.2. Enter any name you want to use for the Customized Application.3. Enter the External Port range of the service you are using. For example, if you want to host Unreal Tournament (UT), you would enter the range 7777 to 27900.4. Check the protocol you will be using, TCP and/or UDP. 5. Enter the IP address of the PC or network device that you want the port server to go to. For example, if the web server’s Ethernet adapter IP address is 192.168.1.100, you would enter 100 in the field provided. Check “Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter” for details on getting an IP address.6. Check the Enable option for the port services you want to use. Consider the example below:When you have completed the configuration, click the Save Settings button.8. I can’t get the Internet game, server, or application to work.If you are having difficulties getting any Internet game, server, or application to function properly, consider exposing one PC to the Internet using DeMilitarized Zone (DMZ) hosting. This option is available when an application requires too many ports or when you are not sure which port services to use. Make sure you disable all the forwarding entries if you want to successfully use DMZ hosting, since forwarding has priority over DMZ hosting. (In other words, data that enters the Router will be checked first by the forwarding settings. If the port number that the data enters from does not have port forwarding, then the Router will send the data to whichever PC or network device you set for DMZ hosting.) Application Start and End Protocol IP Address EnabledUT 7777 to 27900 Both 192.168.1.100 XHalflife 27015 to 27015 Both 192.168.1.105 XPC Anywhere 5631 to 5631 UDP 192.168.1.102 XVPN IPSEC 500 to 500 UDP 192.168.1.100 X
40Appendix A: TroubleshootingCommon Problems and SolutionsWireless-G Broadband RouterFollow these steps to set DMZ hosting:1. Access the Router’s web-based utility by going to http://192.168.1.1 or the IP address of the Router. Go to the Applications & Gaming => Port Forwarding tab.2. Disable or remove the entries you have entered for forwarding. Keep this information in case you want to use it at a later time.3. Go to the Applications & Gaming => DMZ tab.4. Select Enable next to DMZ. In the DMZ Host IP Address field, enter the IP address of the computer you want exposed to the Internet. This will bypass the NAT technology for that computer. Please refer to “Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter” for details on getting an IP address. 5. Once completed with the configuration, click the Save Settings button.9. I forgot my password, or the password prompt always appears when I am saving settings to the Router.Reset the Router to factory default by pressing the Reset button for 10 seconds and then releasing it. If you are still getting prompted for a password when saving settings, then perform the following steps:1. Access the Router’s web-based utility by going to http://192.168.1.1 or the IP address of the Router. Enter the default password admin, and click the Administrations => Management tab. 2. Enter a different password in the Router Password field, and enter the same password in the second field to confirm the password.3. Click the Save Settings button.10. I am a PPPoE user, and I need to remove the proxy settings or the dial-up pop-up window.If you have proxy settings, you need to disable these on your computer. Because the Router is the gateway for the Internet connection, the computer does not need any proxy settings to gain access. Please follow these directions to verify that you do not have any proxy settings and that the browser you use is set to connect directly to the wired network.• For Microsoft Internet Explorer 5.0 or higher:1. Click Start, Settings, and Control Panel. Double-click Internet Options. 2. Click the Connections tab.3. Click the LAN settings button and remove anything that is checked.4. Click the OK button to go back to the previous screen.5. Click the option Never dial a connection. This will remove any dial-up pop-ups for PPPoE users.• For Netscape 4.7 or higher:1. Start Netscape Navigator, and click Edit,Preferences,Advanced, and Proxies.2. Make sure you have Direct connection to the Internet selected on this screen.3. Close all the windows to finish.
41Appendix A: TroubleshootingCommon Problems and SolutionsWireless-G Broadband Router11. To start over, I need to set the Router to factory default.Hold the Reset button for 10 seconds and then release it. This will return the password, forwarding, and other settings on the Router to the factory default settings. In other words, the Router will revert to its original factory configuration.12. I need to upgrade the firmware.In order to upgrade the firmware with the latest features, you need to go to the Linksys website and download the latest firmware at www.linksys.com. Follow these steps:1. Go to the Linksys website at http://www.linksys.com and download the latest firmware.2. To upgrade the firmware, follow the steps in “Appendix C: Upgrading Firmware.”13. The firmware upgrade failed, and/or the Power LED is flashing.The upgrade could have failed for a number of reasons. Follow these steps to upgrade the firmware and/or make the Power LED stop flashing:• If the firmware upgrade failed, use the TFTP program (it was downloaded along with the firmware). Open the pdf that was downloaded along with the firmware and TFTP program, and follow the pdf’s instructions.• Set a static IP address on the PC; refer to “Problem #1, I need to set a static IP address.” Use the following IP address settings for the computer you are using:IP Address: 192.168.1.50Subnet Mask: 255.255.255.0Gateway: 192.168.1.1• Perform the upgrade using the TFTP program or the Administration tab of the Router’s web-based utility.14. My DSL service’s PPPoE is always disconnecting.PPPoE is not actually a dedicated or always-on connection. The DSL ISP can disconnect the service after a period of inactivity, just like a normal phone dial-up connection to the Internet. • There is a setup option to “keep alive” the connection. This may not always work, so you may need to re-establish connection periodically.1. To connect to the Router, go to the web browser, and enter http://192.168.1.1 or the IP address of the Router.2. Enter the password, if asked. (The default password is admin.)3. On the Setup screen, select the option Keep Alive, and set the Redial Period option at 20 (seconds).4. Click the Save Settings button.5. Click the Status tab, and click the Connect button.6. You may see the login status display as Connecting. Press the F5 key to refresh the screen, until you see the login status display as Connected.• Click the Save Settings button to continue.• If the connection is lost again, follow steps 1- 6 to re-establish connection.
42Appendix A: TroubleshootingCommon Problems and SolutionsWireless-G Broadband Router15. I can’t access my e-mail, web or I am getting corrupted data from the Internet.The Maximum Transmission Unit (MTU) setting may need to be adjusted. By default, the MTU is set at 1500. For most DSL users, it is strongly recommended to use MTU 1492. • If you are having some difficulties, perform the following steps:1. To connect to the Router, go to the web browser, and enter http://192.168.1.1 or the IP address of the Router.2. Enter the password, if asked. (The default password is admin.)3. Look for the MTU option, and select Manual. In the Size field, enter 1492.4. Click the Save Settings button to continue.• If your difficulties continue, change the Size to different values. Try this list of values, one value at a time, in this order, until your problem is solved:146214001362130016. The Power LED keeps flashing.The Power LED flashes when the device is first powered up. Meantime, the system will boot up itself and check for proper operation. After finishing the checking procedure, the LED stays solid to show that the system is working fine. If the LED keeps flashing after this time, the device is not working properly. Try to flash the firmware by assigning a static IP address to the computer, and then upgrade the firmware. Try using the following settings, IP Address: 192.168.1.50 and Subnet Mask: 255.255.255.0.17. When I enter a URL or IP address, I get a time-out error or am prompted to retry.• Check if other PCs work. If they do, ensure that your workstation’s IP settings are correct (IP Address, Subnet Mask, Default Gateway, and DNS). Restart the computer that is having a problem.• If the PCs are configured correctly, but still not working, check the Router. Ensure that it is connected and powered on. Connect to it and check its settings. (If you cannot connect to it, check the wired network and power connections.)• If the Router is configured correctly, check your Internet connection (DSL/cable modem, etc.) to see if it is working correctly. You can remove the Router to verify a direct connection.• Manually configure the TCP/IP settings with a DNS address provided by your ISP.• Make sure that your browser is set to connect directly and that any dial-up is disabled. For Internet Explorer, click Tools, Internet Options, and then the Connection tab. Make sure that Internet Explorer is set to Never dial a connection. For Netscape Navigator, click Edit,Preferences,Advanced, and Proxy.Make sure that Netscape Navigator is set to Direct connection to the Internet.
43Appendix A: TroubleshootingFrequently Asked QuestionsWireless-G Broadband RouterFrequently Asked QuestionsWhat is the maximum number of IP addresses that the Router will support? The Router will support up to 253 IP addresses.Is IPSec Pass-Through supported by the Router? Yes, it is a built-in feature that the Router automatically enables.Where is the Router installed on the network? In a typical environment, the Router is installed between the cable/DSL modem and the wired network. Plug the Router into the cable/DSL modem’s Ethernet port.Does the Router support IPX or AppleTalk? No. TCP/IP is the only protocol standard for the Internet and has become the global standard for communications. IPX, a NetWare communications protocol used only to route messages from one node to another, and AppleTalk, a communications protocol used on Apple and Macintosh networks, can be used for network to network connections, but those protocols cannot connect from the Internet to a network.Does the Internet connection of the Router support 100Mbps Ethernet? The Router’s current hardware design supports up to 100Mbps Ethernet on its Internet port; however, the Internet connection speed will vary depending on the speed of your broadband connection. The Router also supports 100Mbps over the auto-sensing Fast Ethernet 10/100 switch on the local network side of the Router. What is Network Address Translation and what is it used for? Network Address Translation (NAT) translates multiple IP addresses on the private network to one public address that is sent out to the Internet. This adds a level of security since the address of a PC connected to the private network is never transmitted on the Internet. Furthermore, NAT allows the Router to be used with low cost Internet accounts, such as DSL or cable modems, when only one TCP/IP address is provided by the ISP. The user may have many private addresses behind this single address provided by the ISP.Does the Router support any operating system other than Windows 98SE, Windows Millennium, Windows 2000, or Windows XP? Yes, but Linksys does not, at this time, provide technical support for setup, configuration or troubleshooting of any non-Windows operating systems.Does the Router support ICQ send file? Yes, with the following fix: click ICQ menu -> preference -> connections tab->, and check I am behind a firewall or proxy. Then set the firewall time-out to 80 seconds in the firewall setting. The Internet user can then send a file to a user behind the Router.
44Appendix A: TroubleshootingFrequently Asked QuestionsWireless-G Broadband RouterI set up an Unreal Tournament Server, but others on the network cannot join. What do I need to do? If you have a dedicated Unreal Tournament server running, you need to create a static IP for each of the network computers and forward ports 7777, 7778, 7779, 7780, 7781, and 27900 to the IP address of the server. You can also use a port forwarding range of 7777 ~ 27900. If you want to use the UT Server Admin, forward another port. (Port 8080 usually works well but is used for remote admin. You may have to disable this.) Then in the [UWeb.WebServer] section of the server.ini file, set the ListenPort to 8080 (to match the mapped port above) and ServerName to the IP assigned to the Router from your ISP.Can multiple gamers on the network get on one game server and play simultaneously with just one public IP address? It depends on which network game or what kind of game server you are using. For example, Unreal Tournament supports multi-login with one public IP.How do I get Half-Life: Team Fortress to work with the Router? The default client port for Half-Life is 27005. The computers on your network need to have “+clientport 2700x” added to the HL shortcut command line; the x would be 6, 7, 8, and on up. This lets multiple computers connect to the same server. One problem: Version 1.0.1.6 won’t let multiple computers with the same CD key connect at the same time, even if on the same network (not a problem with 1.0.1.3). As far as hosting games, the HL server does not need to be in the DMZ. Just forward port 27015 to the local IP address of the server computer. How can I block corrupted FTP downloads? If you are experiencing corrupted files when you download a file with your FTP client, try using another FTP program.The web page hangs; downloads are corrupt, or nothing but junk characters are being displayed on the screen. What do I need to do? Force your Ethernet adapter to 10Mbps or half duplex mode, and turn off the “Auto-negotiate” feature of your Ethernet adapter as a temporary measure. (Please look at the Network Control Panel in your Ethernet adapter’s Advanced Properties tab.) Make sure that your proxy setting is disabled in the browser. Check our website at www.linksys.com for more information.If all else fails in the installation, what can I do? Reset the Router by holding down the reset button until the Power LED fully turns on and off. Reset your cable or DSL modem by powering the unit off and then on. Obtain and flash the latest firmware release that is readily available on the Linksys website, www.linksys.com.How will I be notified of new Router firmware upgrades? All Linksys firmware upgrades are posted on the Linksys website at www.linksys.com, where they can be downloaded for free. To upgrade the Router’s firmware, use the System tab of the Router’s web-based utility. If the Router’s Internet connection is working well, there is no need to download a newer firmware version, unless
45Appendix A: TroubleshootingFrequently Asked QuestionsWireless-G Broadband Routerthat version contains new features that you would like to use. Downloading a more current version of Router firmware will not enhance the quality or speed of your Internet connection, and may disrupt your current connection stability.Will the Router function in a Macintosh environment? Yes, but the Router’s setup pages are accessible only through Internet Explorer 4.0 or Netscape Navigator 4.0 or higher for Macintosh.I am not able to get the web configuration screen for the Router. What can I do? You may have to remove the proxy settings on your Internet browser, e.g., Netscape Navigator or Internet Explorer. Or remove the dial-up settings on your browser. Check with your browser documentation, and make sure that your browser is set to connect directly and that any dial-up is disabled. Make sure that your browser is set to connect directly and that any dial-up is disabled. For Internet Explorer, click Tools, Internet Options, and then the Connection tab. Make sure that Internet Explorer is set to Never dial a connection. For Netscape Navigator, click Edit, Preferences, Advanced, and Proxy. Make sure that Netscape Navigator is set to Direct connection to the Internet.What is DMZ Hosting? Demilitarized Zone (DMZ) allows one IP address (computer) to be exposed to the Internet. Some applications require multiple TCP/IP ports to be open. It is recommended that you set your computer with a static IP if you want to use DMZ Hosting. To get the network IP address, see “Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter.”If DMZ Hosting is used, does the exposed user share the public IP with the Router? No.Does the Router pass PPTP packets or actively route PPTP sessions? The Router allows PPTP packets to pass through.Is the Router cross-platform compatible? Any platform that supports Ethernet and TCP/IP is compatible with the Router.How many ports can be simultaneously forwarded? Theoretically, the Router can establish 520 sessions at the same time, but you can only forward 10 ranges of ports.What are the advanced features of the Router? The Router’s advanced features include Advanced Wireless settings, Filters, Port Forwarding, Routing, and DDNS.
46Appendix A: TroubleshootingFrequently Asked QuestionsWireless-G Broadband RouterHow do I get mIRC to work with the Router? Under the Port Forwarding tab, set port forwarding to 113 for the PC on which you are using mIRC.Can the Router act as my DHCP server? Yes. The Router has DHCP server software built-in.Can I run an application from a remote computer over the wireless network? This will depend on whether or not the application is designed to be used over a network. Consult the application’s documentation to determine if it supports operation over a network.What is the IEEE 802.11g standard?It is one of the IEEE standards for wireless networks. The 802.11g standard allows wireless networking hardware from different manufacturers to communicate, provided that the hardware complies with the 802.11g standard. The 802.11g standard states a maximum data transfer rate of 54Mbps and an operating frequency of 2.4GHz.What IEEE 802.11b features are supported?The product supports the following IEEE 802.11b functions: • CSMA/CA plus Acknowledge protocol • Multi-Channel Roaming • Automatic Rate Selection • RTS/CTS feature • Fragmentation • Power Management What is ad-hoc mode?When a wireless network is set to ad-hoc mode, the wireless-equipped computers are configured to communicate directly with each other. The ad-hoc wireless network will not communicate with any wired network. What is infrastructure mode?When a wireless network is set to infrastructure mode, the wireless network is configured to communicate with a wired network through a wireless access point.What is roaming?Roaming is the ability of a portable computer user to communicate continuously while moving freely throughout an area greater than that covered by a single access point. Before using the roaming function, the workstation must make sure that it is the same channel number with the access point of dedicated coverage area. To achieve true seamless connectivity, the wireless network must incorporate a number of different functions. Each node and access point, for example, must always acknowledge receipt of each message. Each node must
47Appendix A: TroubleshootingFrequently Asked QuestionsWireless-G Broadband Routermaintain contact with the wireless network even when not actually transmitting data. Achieving these functions simultaneously requires a dynamic RF networking technology that links access points and nodes. In such a system, the user’s end node undertakes a search for the best possible access to the system. First, it evaluates such factors as signal strength and quality, as well as the message load currently being carried by each access point and the distance of each access point to the wired backbone. Based on that information, the node next selects the right access point and registers its address. Communications between end node and host computer can then be transmitted up and down the backbone.As the user moves on, the end node’s RF transmitter regularly checks the system to determine whether it is in touch with the original access point or whether it should seek a new one. When a node no longer receives acknowledgment from its original access point, it undertakes a new search. Upon finding a new access point, it then re-registers, and the communication process continues.What is ISM band?The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the ISM (Industrial, Scientific and Medical) band. Spectrum in the vicinity of 2.4 GHz, in particular, is being made available worldwide. This presents a truly revolutionary opportunity to place convenient high-speed wireless capabilities in the hands of users around the globe. What is Spread Spectrum?Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in reliable, secure, mission-critical communications systems. It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other words, more bandwidth is consumed than in the case of narrowband transmission, but the trade-off produces a signal that is, in effect, louder and thus easier to detect, provided that the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to the right frequency, a spread-spectrum signal looks like background noise. There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS).What is DSSS? What is FHSS? And what are their differences?Frequency-Hopping Spread-Spectrum (FHSS) uses a narrowband carrier that changes frequency in a pattern that is known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct-Sequence Spread-Spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip (or chipping code). The longer the chip, the greater the probability that the original data can be recovered. Even if one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband receivers.
48Appendix A: TroubleshootingFrequently Asked QuestionsWireless-G Broadband RouterWhat is WEP?WEP is Wired Equivalent Privacy, a data privacy mechanism based on a 64-bit or 128-bit shared key algorithm, as described in the IEEE 802.11 standard.What is a MAC Address?The Media Access Control (MAC) address is a unique number assigned by the manufacturer to any Ethernet networking device, such as a network adapter, that allows the network to identify it at the hardware level. For all practical purposes, this number is usually permanent. Unlike IP addresses, which can change every time a computer logs onto the network, the MAC address of a device stays the same, making it a valuable identifier for the network.How do I reset the Router?Press the Reset button on the back panel for about five seconds. This will reset the Router to its default settings.How do I resolve issues with signal loss?There is no way to know the exact range of your wireless network without testing. Every obstacle placed between the Router and a wireless PC will create signal loss. Lead glass, metal, concrete floors, water and walls will inhibit the signal and reduce range. Start with the Router and your wireless PC in the same room and move it away in small increments to determine the maximum range in your environment. You may also try using different channels, as this may eliminate interference affecting only one channel.I have excellent signal strength, but I cannot see my network. WEP is probably enabled on the Router, but not on your wireless adapter (or vice versa). Verify that the same WEP keys and levels (64 or 128) are being used on all nodes of your wireless network. How many channels/frequencies are available with the Router?There are eleven available channels, ranging from 1 to 11 (in North America). If your questions are not addressed here, refer to the Linksys website, www.linksys.com.
49Appendix B: Wireless SecuritySecurity PrecautionsWireless-G Broadband RouterAppendix B: Wireless SecurityLinksys wants to make wireless networking as safe and easy for you as possible. The current generation of Linksys products provide several network security features, but they require specific action on your part for implementation. So, keep the following in mind whenever you are setting up or using your wireless network.Security PrecautionsThe following is a complete list of security precautions to take (at least steps 1 through 5 should be followed):1. Change the default SSID. 2. Disable SSID Broadcast. 3. Change the default password for the Administrator account. 4. Enable MAC Address Filtering. 5. Change the SSID periodically. 6. Use the highest encryption algorithm possible. Use WPA if it is available. Please note that this may reduce your network performance. 7. Change the WEP encryption keys periodically. For information on implementing these security features, refer to “Chapter 6: Configuring the Wireless-G Broadband Router.”Security Threats Facing Wireless Networks Wireless networks are easy to find. Hackers know that in order to join a wireless network, wireless networking products first listen for “beacon messages”. These messages can be easily decrypted and contain much of the network’s information, such as the network’s SSID (Service Set Identifier). Here are the steps you can take:Change the administrator’s password regularly. With every wireless networking device you use, keep in mind that network settings (SSID, WEP keys, etc.) are stored in its firmware. Your network administrator is the only person who can change network settings. If a hacker gets a hold of the administrator’s password, he, too, can change those settings. So, make it harder for a hacker to get that information. Change the administrator’s password regularly.Note: Some of these security features are available only through the network router or access point. Refer to the router or access point’s documentation for more information.
50Appendix B: Wireless SecuritySecurity Threats Facing Wireless NetworksWireless-G Broadband RouterSSID. There are several things to keep in mind about the SSID: 1. Disable Broadcast 2. Make it unique 3. Change it often Most wireless networking devices will give you the option of broadcasting the SSID. While this option may be more convenient, it allows anyone to log into your wireless network. This includes hackers. So, don’t broadcast the SSID.Wireless networking products come with a default SSID set by the factory. (The Linksys default SSID is “linksys”.) Hackers know these defaults and can check these against your network. Change your SSID to something unique and not something related to your company or the networking products you use.Change your SSID regularly so that any hackers who have gained access to your wireless network will have to start from the beginning in trying to break in.MAC Addresses. Enable MAC Address filtering. MAC Address filtering will allow you to provide access to only those wireless nodes with certain MAC Addresses. This makes it harder for a hacker to access your network with a random MAC Address. WEP Encryption. Wired Equivalent Privacy (WEP) is often looked upon as a cure-all for wireless security concerns. This is overstating WEP’s ability. Again, this can only provide enough security to make a hacker’s job more difficult.There are several ways that WEP can be maximized:1. Use the highest level of encryption possible 2. Use “Shared Key” authentication3. Change your WEP key regularly WPA. Wi-Fi Protected Access (WPA) is the newest and best available standard in Wi-Fi security. Two modes are available: Pre-Shared Key and RADIUS. Pre-Shared Key gives you one encryption methods: TKIP (Temporal Key Integrity Protocol), which utilizes a stronger encryption method and incorporates Message Integrity Code (MIC) to provide protection against hackers.Important: Always remember that each device in your wireless network MUST use the same encryption method and encryption key or your wireless network will not function properly.
51Appendix B: Wireless SecuritySecurity Threats Facing Wireless NetworksWireless-G Broadband RouterWPA Pre-Shared Key. If you do not have a RADIUS server, Select the type of algorithm, TKIP or AES, enter a password in the Pre-Shared key field of 8-64 characters, and enter a Group Key Renewal period time between 0 and 99,999 seconds, which instructs the Router or other device how often it should change the encryption keys.WPA RADIUS. WPA used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router or other device.) First, select the type of WPA algorithm, TKIP or AES. Enter the RADIUS server’s IP Address and port number, along with a key shared between the device and the server. Last, enter a Group Key Renewal period, which instructs the device how often it should change the encryption keys.Implementing encryption may have a negative impact on your network’s performance, but if you are transmitting sensitive data over your network, encryption should be used. These security recommendations should help keep your mind at ease while you are enjoying the most flexible and convenient technology Linksys has to offer.
52Appendix C: Upgrading FirmwareWireless-G Broadband RouterAppendix C: Upgrading FirmwareThe Broadband Router's firmware is upgraded through the Web-based Utility's Administration tab. Follow these instructions:1. Download the firmware from Linksys's website at www.linksys.com.2. Click the Firmware Upgrade tab on the Web-Utility's Administration tab, and the Upgrade Firmware screen will appear.3. Enter the location of the firmware's file or click the Browse button to find the file. 4. Then, click the Upgrade button to upgrade the firmware.Figure C-1: Upgrade Firmware
53Appendix D: Windows HelpWireless-G Broadband RouterAppendix D: Windows HelpAll Linksys wireless products require Microsoft Windows. Windows is the most used operating system in the world and comes with many features that help make networking easier. These features can be accessed through Windows Help and are described in this appendix.TCP/IPBefore a computer can communicate with the Broadband Router, TCP/IP must be enabled. TCP/IP is a set of instructions, or protocol, all PCs follow to communicate over a network. This is true for wireless networks as well. Your PCs will not be able to utilize wireless networking without having TCP/IP enabled. Windows Help provides complete instructions on enabling TCP/IP.Shared ResourcesIf you wish to share printers, folder, or files over your network, Windows Help provides complete instructions on utilizing shared resources.Network Neighborhood/My Network PlacesOther PCs on your network will appear under Network Neighborhood or My Network Places (depending upon the version of Windows you're running). Windows Help provides complete instructions on adding PCs to your network.
54Appendix E: Finding the MAC Address and IP Address for Your Ethernet AdapterWindows 98SE or Me InstructionsWireless-G Broadband RouterAppendix E: Finding the MAC Address and IP Address for Your Ethernet AdapterThis section describes how to find the MAC address for your computer’s Ethernet adapter so you can use the MAC filtering and/or MAC address cloning feature of the Router. You can also find the IP address of your computer’s Ethernet adapter. This IP address is used for the Router’s filtering, forwarding, and/or DMZ features. Follow the steps in this appendix to find the adapter’s MAC or IP address in Windows 98, Me, 2000, or XP.Windows 98SE or Me Instructions1. Click Start and Run. In the Open field, enter winipcfg. Then press the Enter key or the OK button. 2. When the IP Configuration screen appears, select the Ethernet adapter you have connected to the Router via a CAT 5 Ethernet network cable.3. Write down the Adapter Address as shown on your computer screen. This is the MAC address for your Ethernet adapter and is shown as a series of numbers and letters.The MAC address/Adapter Address is what you will use for MAC address cloning or MAC filtering.The example in Figure E-3 shows the Ethernet adapter’s IP address as 192.168.1.100. Your computer may show something different. Figure E-2: MAC Address/Adapter AddressFigure E-1: IP Configuration ScreenNote: The MAC address is also called the Adapter Address.Figure E-3: MAC Address/Physical Address
55Appendix E: Finding the MAC Address and IP Address for Your Ethernet AdapterWindows 2000 or XP InstructionsWireless-G Broadband RouterWindows 2000 or XP Instructions1. Click Start and Run. In the Open field, enter cmd. Press the Enter key or click the OK button.2. At the command prompt, enter ipconfig /all. Then press the Enter key.3. Write down the Physical Address as shown on your computer screen (Figure E-3); it is the MAC address for your Ethernet adapter. This appears as a series of numbers and letters.The MAC address/Physical Address is what you will use for MAC address cloning or MAC filtering.The example in Figure E-3 shows the Ethernet adapter’s IP address as 192.168.1.100. Your computer may show something different.For the Router’s Web-based UtilityFor MAC filtering, enter the 12-digit MAC address in this format, XXXXXXXXXXXX, WITHOUT the hyphens. For MAC address cloning, enter the 12-digit MAC address in the MAC Address fields provided, two digits per field.Figure E-4: MAC Address Filter ListNote: The MAC address is also called the Physical Address.Figure E-5: MAC Address Clone
56Appendix F: GlossaryWireless-G Broadband RouterAppendix F: Glossary802.11a - A wireless networking standard that specifies a maximum data transfer rate of 54Mbps and an operating frequency of 5GHz.802.11b - A wireless networking standard that specifies a maximum data transfer rate of 11Mbps and an operating frequency of 2.4GHz.802.11g - A wireless networking standard that specifies a maximum data transfer rate of 54Mbps, an operating frequency of 2.4GHz, and backward compatibility with 802.11b devices.Access Point - A device that allows wireless-equipped computers and other devices to communicate with a wired network. Also used to expand the range of a wireless network.Adapter - A device that adds network functionality to your PC.Ad-hoc - A group of wireless devices communicating directly with each other (peer-to-peer) without the use of an access point.AES (Advanced Encryption Standard) - A security method that uses symmetric 128-bit block data encryption.Backbone - The part of a network that connects most of the systems and networks together, and handles the most data.Bandwidth - The transmission capacity of a given device or network.Beacon Interval - Data transmitted on your wireless network that keeps the network synchronized.Bit - A binary digit.Boot - To start a device and cause it to start executing instructions.Bridge - A device that connects different networks. Broadband - An always-on, fast Internet connection.Browser - An application program that provides a way to look at and interact with all the information on the World Wide Web.
57Appendix F: GlossaryWireless-G Broadband RouterBuffer - A shared or assigned memory area that is used to support and coordinate different computing and networking activities so one isn't held up by the other.Byte - A unit of data that is usually eight bits longCable Modem - A device that connects a computer to the cable television network, which in turn connects to the Internet.CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) - A method of data transfer that is used to prevent data collisions.CTS (Clear ToSend) - A signal sent by a wireless device, signifying that it is ready to receive data.Daisy Chain - A method used to connect devices in a series, one after the other.Database - A collection of data that is organized so that its contents can easily be accessed, managed, and updated.DDNS (Dynamic Domain Name System) - Allows the hosting of a website, FTP server, or e-mail server with a fixed domain name (e.g., www.xyz.com) and a dynamic IP address.Default Gateway - A device that forwards Internet traffic from your local area network.DHCP (Dynamic Host Configuration Protocol) - A networking protocol that allows administrators to assign temporary IP addresses to network computers by "leasing" an IP address to a user for a limited amount of time, instead of assigning permanent IP addresses.DMZ (Demilitarized Zone) - Removes the Router's firewall protection from one PC, allowing it to be "seen" from the Internet.DNS (Domain Name Server) - The IP address of your ISP's server, which translates the names of websites into IP addresses.Domain - A specific name for a network of computers.Download - To receive a file transmitted over a network. DSL (Digital Subscriber Line) - An always-on broadband connection over traditional phone lines.DSSS (Direct-Sequence Spread-Spectrum) - Frequency transmission with a redundant bit pattern resulting in a lower probability of information being lost in transit.
58Appendix F: GlossaryWireless-G Broadband RouterDTIM (Delivery Traffic Indication Message) - A message included in data packets that can increase wireless efficiency.Dynamic IP Address - A temporary IP address assigned by a DHCP server.EAP (Extensible Authentication Protocol) - A general authentication protocol used to control network access. Many specific authentication methods work within this framework.EAP-PEAP (Extensible Authentication Protocol-Protected Extensible Authentication Protocol) - A mutual authentication method that uses a combination of digital certificates and another system, such as passwords.EAP-TLS (Extensible Authentication Protocol-Transport Layer Security) - A mutual authentication method that uses digital certificates.Encryption - Encoding data transmitted in a network. Ethernet - A networking protocol that specifies how data is placed on and retrieved from a common transmission medium.Finger - A program that tells you the name associated with an e-mail address.Firewall - A set of related programs located at a network gateway server that protects the resources of a network from users from other networks.Firmware - The programming code that runs a networking device.Fragmentation -Breaking a packet into smaller units when transmitting over a network medium that cannot support the original size of the packet. FTP (File Transfer Protocol) - A protocol used to transfer files over a TCP/IP network.Full Duplex - The ability of a networking device to receive and transmit data simultaneously.Gateway - A device that interconnects networks with different, incompatible communications protocols. Half Duplex - Data transmission that can occur in two directions over a single line, but only one direction at a time.Hardware - The physical aspect of computers, telecommunications, and other information technology devices.HTTP (HyperText Transport Protocol) - The communications protocol used to connect to servers on the World Wide Web.
59Appendix F: GlossaryWireless-G Broadband RouterInfrastructure - A wireless network that is bridged to a wired network via an access point.IP (Internet Protocol) - A protocol used to send data over a network.IP Address - The address used to identify a computer or device on a network.IPCONFIG - A Windows 2000 and XP utility that displays the IP address for a particular networking device.IPSec (Internet Protocol Security) - A VPN protocol used to implement secure exchange of packets at the IP layer.ISM band - Radio bandwidth utilized in wireless transmissions.ISP (Internet Service Provider) - A company that provides access to the Internet. LEAP (Lightweight Extensible Authentication Protocol) - A mutual authentication method that uses a username and password system.MAC (Media Access Control) Address - The unique address that a manufacturer assigns to each networking device. Mbps (MegaBits Per Second) - One million bits per second; a unit of measurement for data transmission.mIRC - An Internet Relay Chat program that runs under Windows.Multicasting - Sending data to a group of destinations at once.NAT (Network Address Translation) - NAT technology translates IP addresses of a local area network to a different IP address for the Internet.NAT (Network Address Translation) Traversal -A method of enabling specialized applications, such as Internet phone calls, video, and audio, to travel between your local network and the Internet. STUN is a specific type of NAT traversal.Network - A series of computers or devices connected for the purpose of data sharing, storage, and/or transmission between users.NNTP (Network News Transfer Protocol) - The protocol used to connect to Usenet groups on the Internet.Node - A network junction or connection point, typically a computer or work station.OFDM (Orthogonal Frequency Division Multiplexing) - Frequency transmission that separates the data stream into a number of lower-speed data streams, which are then transmitted in parallel to prevent information from being lost in transit.
60Appendix F: GlossaryWireless-G Broadband RouterPacket - A unit of data sent over a network.Passphrase - Used much like a password, a passphrase simplifies the WEP encryption process by automatically generating the WEP encryption keys for Linksys products.PEAP (Protected Extensible Authentication Protocol) - A mutual authentication method that uses a combination of digital certificates and another system, such as passwords.Ping (Packet INternet Groper) - An Internet utility used to determine whether a particular IP address is online.POP3 (Post Office Protocol 3) - A standard mail server commonly used on the Internet.Port - The connection point on a computer or networking device used for plugging in cables or adapters. Power over Ethernet (PoE) - A technology enabling an Ethernet network cable to deliver both data and power.PPPoE (Point to Point Protocol over Ethernet) - A type of broadband connection that provides authentication (username and password) in addition to data transport.PPTP (Point-to-Point Tunneling Protocol) - A VPN protocol that allows the Point to Point Protocol (PPP) to be tunneled through an IP network. This protocol is also used as a type of broadband connection in Europe.Preamble - Part of the wireless signal that synchronizes network traffic.RADIUS (Remote Authentication Dial-InUser Service) - A protocol that uses an authentication server to control network access.RJ-45 (Registered Jack-45) - An Ethernet connector that holds up to eight wires.Roaming - The ability to take a wireless device from one access point's range to another without losing the connection.Router - A networking device that connects multiple networks together.RTP (Real-time Transport Protocol) - A protocol that enables specialized applications, such as Internet phone calls, video, and audio, to occur in real time.RTS (Request ToSend) - A networking method of coordinating large packets through the RTS Threshold setting.Server - Any computer whose function in a network is to provide user access to files, printing, communications, and other services. SMTP (Simple Mail Transfer Protocol) - The standard e-mail protocol on the Internet.
61Appendix F: GlossaryWireless-G Broadband RouterSNMP (Simple Network Management Protocol) - A widely used network monitoring and control protocol.Software - Instructions for the computer. A series of instructions that performs a particular task is called a "program".SOHO (Small Office/Home Office) - Market segment of professionals who work at home or in small offices.SPI (Stateful Packet Inspection) Firewall - A technology that inspects incoming packets of information before allowing them to enter the network.Spread Spectrum - Wideband radio frequency technique used for more reliable and secure data transmission.SSID (Service Set IDentifier) - Your wireless network's name.Static IP Address - A fixed address assigned to a computer or device that is connected to a network.Static Routing - Forwarding data in a network via a fixed path.STUN (Simple Traversal of UDP through NATs) - A protocol that enables specialized applications, such as Internet phone calls, video, and audio, to travel between your local network and the Internet. STUN is a specific type of NAT traversal.Subnet Mask - An address code that determines the size of the network.Switch - 1. A data switch that connects computing devices to host computers, allowing a large number of devices to share a limited number of ports. 2. A device for making, breaking, or changing the connections in an electrical circuit. TCP (Transmission Control Protocol) - A network protocol for transmitting data that requires acknowledgement from the recipient of data sent.TCP/IP (Transmission Control Protocol/Internet Protocol) - A set of instructions PCs use to communicate over a network.Telnet - A user command and TCP/IP protocol used for accessing remote PCs.TFTP (Trivial File Transfer Protocol) - A version of the TCP/IP FTP protocol that has no directory or password capability.Throughput - The amount of data moved successfully from one node to another in a given time period.
62Appendix F: GlossaryWireless-G Broadband RouterTKIP (Temporal Key Integrity Protocol) - a wireless encryption protocol that provides dynamic encryption keys for each packet transmitted.Topology - The physical layout of a network.TX Rate - Transmission Rate.UDP (User Datagram Protocol) - A network protocol for transmitting data that does not require acknowledgement from the recipient of the data that is sent.Upgrade - To replace existing software or firmware with a newer version. Upload - To transmit a file over a network.URL (Uniform Resource Locator) - The address of a file located on the Internet. VPN (Virtual Private Network) - A security measure to protect data as it leaves one network and goes to another over the Internet.WAN (Wide Area Network)- The Internet.WEP (Wired Equivalent Privacy) - A method of encrypting network data transmitted on a wireless network for greater security.WINIPCFG - A Windows 98 and Me utility that displays the IP address for a particular networking device.WPA (Wi-Fi Protected Access) - a wireless security protocol using TKIP (Temporal Key Integrity Protocol) encryption, which can be used in conjunction with a RADIUS server.
63Appendix G: SpecificationsWireless-G Broadband RouterAppendix G: SpecificationsModel WRK54GStandards IEEE 802.3, IEEE 802.3u, IEEE 802.11g, IEEE 802.11bChannels 11 Channels (US, Canada)13 Channels (Europe)14 Channels (Japan)Ports/Buttons Internet: One 10/100 RJ-45 PortFour 10/100 RJ-45 Switched PortsOne Power PortOne Reset ButtonCabling Type Ethernet Network CableLEDs Power, DMZ, WLAN, Ethernet (1-4), InternetRF Power Output22 dBm +/-1dBUPnP able/cert AbleSecurity Features NAT Firewall, Internet PolicyWireless Security Wi-Fi Protected Access™ (WPA), WEP, Wireless MAC FilteringDimensions 7.31" x 1.88" x 6.06"(W x H x D) (186 mm x 48 mm x 154 mm)Unit Weight 12 oz. (0.34 kg)Power External, 12V DC, 1.0A
64Appendix G: SpecificationsWireless-G Broadband RouterCertifications FCCOperating Temp. 0ºC to 40ºC (32ºF to 104ºF)Storage Temp. -20ºC to 70ºC (-4ºF to 158ºF) Operating Humidity 10% to 85%, Non-CondensingStorage Humidity 5% to 90%, Non-Condensing
65Appendix H: Warranty InformationWireless-G Broadband RouterAppendix H: Warranty InformationLIMITED WARRANTYLinksys warrants to You that, for a period of three years (the “Warranty Period”), your Linksys Product will be substantially free of defects in materials and workmanship under normal use. Your exclusive remedy and Linksys' entire liability under this warranty will be for Linksys at its option to repair or replace the Product or refund your purchase price less any rebates. This limited warranty extends only to the original purchaser. If the Product proves defective during the Warranty Period call Linksys Technical Support in order to obtain a Return Authorization Number, if applicable. BE SURE TO HAVE YOUR PROOF OF PURCHASE ON HAND WHEN CALLING. If You are requested to return the Product, mark the Return Authorization Number clearly on the outside of the package and include a copy of your original proof of purchase. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE. You are responsible for shipping defective Products to Linksys. Linksys pays for UPS Ground shipping from Linksys back to You only. Customers located outside of the United States of America and Canada are responsible for all shipping and handling charges. ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO THE DURATION OF THE WARRANTY PERIOD. ALL OTHER EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF NON-INFRINGEMENT, ARE DISCLAIMED. Some jurisdictions do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to You. This warranty gives You specific legal rights, and You may also have other rights which vary by jurisdiction.This warranty does not apply if the Product (a) has been altered, except by Linksys, (b) has not been installed, operated, repaired, or maintained in accordance with instructions supplied by Linksys, or (c) has been subjected to abnormal physical or electrical stress, misuse, negligence, or accident. In addition, due to the continual development of new techniques for intruding upon and attacking networks, Linksys does not warrant that the Product will be free of vulnerability to intrusion or attack.TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL LINKSYS BE LIABLE FOR ANY LOST DATA, REVENUE OR PROFIT, OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, REGARDLESS OF THE THEORY OF LIABILITY (INCLUDING NEGLIGENCE), ARISING OUT OF OR RELATED TO THE USE OF OR INABILITY TO USE THE PRODUCT (INCLUDING ANY SOFTWARE), EVEN IF LINKSYS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT WILL LINKSYS’ LIABILITY EXCEED THE AMOUNT PAID BY YOU FOR THE PRODUCT. The foregoing limitations will apply even if any warranty or remedy provided under this Agreement fails of its essential purpose. Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to You.Please direct all inquiries to: Linksys, P.O. Box 18558, Irvine, CA 92623.
66Appendix I: Regulatory InformationWireless-G Broadband RouterAppendix I: Regulatory InformationFCC STATEMENTThis product has been tested and complies with the specifications for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which is found by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:Reorient or relocate the receiving antennaIncrease the separation between the equipment or devicesConnect the equipment to an outlet other than the receiver'sConsult a dealer or an experienced radio/TV technician for assistanceFCC Radiation Exposure StatementThis equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.INDUSTRY CANADA (CANADA)This Class B digital apparatus complies with Canadian ICES-003, RSS210.Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.The use of this device in a system operating either partially or completely outdoors may require the user to obtain a license for the system according to the Canadian regulations.EC DECLARATION OF CONFORMITY (EUROPE)Linksys declares that this product conforms to the specifications listed below, following the provisions of the European R&TTE directive 1999/5/EC: EN 301 489-1, 301 489-17 General EMC requirements for Radio equipment.EN 609 50 Safety
67Appendix I: Regulatory InformationWireless-G Broadband RouterEN 300-328-1, EN 300-328-2 Technical requirements for Radio equipment.Caution: This equipment is intended to be used in all EU and EFTA countries. Outdoor use may be restricted to certain frequencies and/or may require a license for operation. Contact local Authority for procedure to follow.Note: Combinations of power levels and antennas resulting in a radiated power level of above 100 mW equivalent isotropic radiated power (EIRP) are considered as not compliant with the above mentioned directive and are not allowed for use within the European community and countries that have adopted the European R&TTE directive 1999/5/EC. For more details on legal combinations of power levels and antennas, contact Linksys Corporate Compliance.Linksys vakuuttaa täten että dieses produkt tyyppinen laite on direktiivin 1999/5/EY oleellisten vaatimusten ja sitä koskevien näiden direktiivien muiden ehtojen mukainen.Linksys Group déclare que le produit est conforme aux conditions essentielles et aux dispositions relatives à la directive 1999/5/EC.Belgique:Dans le cas d'une utilisation privée, à l'extérieur d'un bâtiment, au-dessus d'un espace public, aucun enregistrement n'est nécessaire pour une distance de moins de 300m. Pour une distance supérieure à 300m un enregistrement auprès de l'IBPT est requise. Pour une utilisation publique à l'extérieur de bâtiments, une licence de l'IBPT est requise. Pour les enregistrements et licences, veuillez contacter l'IBPT.France:2.4 GHz Bande : les canaux 10, 11, 12, 13 (2457, 2462, 2467, et 2472 MHz respectivement) sont complétement libres d'utilisation en France (en utilisation intérieur). Pour ce qui est des autres canaux, ils peuvent être soumis à autorisation selon le départment. L'utilisation en extérieur est soumis à autorisation préalable et très restreint. Vous pouvez contacter l'Autorité de Régulation des Télécommunications (http://www.art-telecom.fr) pour de plus amples renseignements.SAFETY NOTICESCaution: To reduce the risk of fire, use only No.26 AWG or larger telecommunication line cord.Do not use this product near water, for example, in a wet basement or near a swimming pool.Avoid using this product during an electrical storm. There may be a remote risk of electric shock from lightning.
68Appendix J: Contact InformationWireless-G Broadband RouterAppendix J: Contact InformationNeed to contact Linksys?Visit us online for information on the latest products and updates to your existing products at: http://www.linksys.com or ftp.linksys.comCan't find information about a product you want to buyon the web? Do you want to know more about networkingwith Linksys products? Give our advice line a call at: 800-546-5797 (LINKSYS)Or fax your request in to: 949-823-3002If you experience problems with any Linksys product,you can call us at: 800-326-7114Don't wish to call? You can e-mail us at: support@linksys.comIf any Linksys product proves defective during its warranty period,you can call the Linksys Return Merchandise Authorizationdepartment for obtaining a Return Authorization Number at: 949-823-3000(Details on Warranty and RMA issues can be found in the WarrantyInformation section in this Guide.)
FCC Caution: 1. This device 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. 2. This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. 3. Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user authority to operate the equipment.

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