Linksys BEFW11S4 User Manual
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Linksys BEFW11S4 User Manual

2.4 ghz wireless-b broadband router
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®
A Division of Cisco Systems, Inc.
2.4
GHz
Wireless-B
802.11b

User Guide

Broadband Router
WIRELESS
BEFW11S4
Model No.

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Summary of Contents for Linksys BEFW11S4

  • Page 1: User Guide

    ® A Division of Cisco Systems, Inc. Wireless-B 802.11b User Guide Broadband Router WIRELESS BEFW11S4 Model No.
  • Page 2 Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like this: Figure 0-1: Sample Figure Description Figure numbers and descriptions can also be found in the "List of Figures" section in the “Table of Contents”. BEFW11S4-v4-UG-41011E KL...

  • Page 3: Table Of Contents

    Wireless-B Broadband Router Table of Contents Chapter 1: Introduction Welcome What’s in this Guide? Chapter 2: Planning your Wireless Network Network Topology Roaming Network Layout Chapter 3: Getting to Know the Wireless-B Broadband Router The Back Panel The Front Panel Chapter 4: Connecting the Wireless-B Broadband Router Hardware Installation Chapter 5: Configuring the Wireless-B Broadband Router...
  • Page 4 Wireless-B Broadband Router Appendix A:Troubleshooting Common Problems and Solutions Frequently Asked Questions Appendix B: Wireless Security Security Precautions Security Threats Facing Wireless Networks Appendix C: Upgrading Firmware Appendix D: Windows Help Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter 50 Windows 98 or Me Instructions Windows 2000 or XP Instructions For the Router’s Web-based Utility...
  • Page 5 Wireless-B Broadband Router List of Figures Figure 3-1: The Broadband Router’s Back Panel Figure 3-2: The Broadband Router’s Front Panel Figure 4-1: Connecting Your Internet Connection Figure 4-2: Connecting Your Network Devices Figure 4-3: Connecting the Power Figure 5-1: Password Screen Figure 5-2: Setup Tab - Basic Setup Figure 5-3: DHCP Connection Type Figure 5-4: Static IP Connection Type...
  • Page 6 Wireless-B Broadband Router Figure 5-26: Applications and Gaming - UPnP Forwarding Figure 5-27: Applications and Gaming - DMZ Figure 5-28: Administration Tab - Management Figure 5-29: Backup & Restore Figure 5-30: Administration Tab - Log Figure 5-31: Log Table Figure 5-32: Administration Tab - Firmware Upgrade Figure 5-33: Administration Tab - Factory Defaults Figure 5-34: Status Tab - Router Figure 5-35: Status Tab - Local Network...

  • Page 7: Chapter 1: Introduction

    Wireless-B Broadband Router Chapter 1: Introduction Welcome Thank you for choosing the Linksys Wireless-B Broadband Router. Think of the Linksys Wireless-B Broadband Router as a kind of "splitter" for your Internet connection. Just connect your DSL or Cable Modem to the Router, and all the computers in your household can share the Internet -- all at the same time.

  • Page 8: What's In This Guide

    Wireless-B Broadband Router What’s in this Guide? This user guide covers the steps for setting up and using the Wireless-B Media Adapter. • Chapter 1: Introduction This chapter describes the Adapter’s applications and this User Guide. • Chapter 2: Planning your Wireless Network This chapter describes the basics of wireless networking.
  • Page 9 Wireless-B Broadband Router • Appendix G: Specifications This appendix provides the technical specifications for the Router. • Appendix H: Warranty Information This appendix supplies the warranty information for the Router.. • Appendix I: Regulatory Information This appendix supplies the regulatory information regarding the Router.. •...

  • Page 10: Chapter 2: Planning Your Wireless Network

    Wireless-B Broadband Router Chapter 2: Planning your Wireless Network Network Topology A wireless LAN is a group of computers, each equipped with one Linksys wireless adapter. Computers in a wireless LAN must be configured to share the same radio channel. The Linksys wireless adapters provide access to a wired LAN for wireless workstations.

  • Page 11: Network Layout

    Wireless-B Broadband Router Network Layout The Wireless-B Broadband Router is compatible with all 802.11b adapters, such as the PC Card (WPC11) for your laptop computers, PCI Card (WMP11) for your desktop PC, and USB Adapter (WUSB11) for when you want to enjoy USB connectivity.

  • Page 12: Chapter 3: Getting To Know The Wireless-B Broadband Router

    Wireless-B Broadband Router Chapter 3: Getting to Know the Wireless-B Broadband Router The Back Panel The Broadband Router's ports, where the cables are connected, are located on the back panel. Figure 3-1: The Broadband Router’s Back Panel Reset Button There are two ways to reset the Broadband Router's factory defaults. Either press the Reset Button, for approximately ten seconds, or restore the defaults from the Password tab in the Web-based Utility.

  • Page 13: The Front Panel

    Wireless-B Broadband Router The Front Panel The Router's LEDs, where information about network activity is displayed, are located on the front panel. Figure 3-2: The Broadband Router’s 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-diagnosis mode during every boot-up, this LED will blink, then stop when the diagnosis is complete.

  • Page 14: Chapter 4: Connecting The Wireless-B Broadband Router

    Wireless-B Broadband Router Chapter 4: Connecting the Wireless-B Broadband Router Hardware Installation 1. 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. 2.

  • Page 15: Chapter 5: Configuring The Wireless-B Broadband Router

    Wireless-B Broadband Router Chapter 5: Configuring the Wireless-B Broadband Router Overview The Broadband Router has been designed to be functional right out of the box with the default settings in the Setup Wizard. However, if you’d like to change these settings, use the Router’s web-based utility. This chapter will describe each web page in the Utility and each page’s key functions.

  • Page 16: The Setup Tab - Basic Setup

    Wireless-B Broadband Router The Setup Tab - Basic Setup The 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.

  • Page 17: Figure 5-5: Pppoe Connection Type

    Wireless-B Broadband Router button. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates. Keep Alive: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.

  • Page 18: Figure 5-8: Heart Beat Signal Connection Type

    Wireless-B Broadband Router Optional Settings (Required by some ISPs) Some of these settings may be required by your ISP. Verify with your ISP before making any changes. 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.
  • Page 19 Wireless-B Broadband Router Network Setup Router IP. The values for the Router’s Local IP Address and Subnet Mask are shown here. In most cases, keeping the default values will work. Local IP Address. The default value is 192.168.1.1. Subnet Mask. The default value is 255.255.255.0. Network Address Server Settings (DHCP).

  • Page 20: The Setup Tab - Mac Address Clone

    Wireless-B Broadband Router The Setup Tab - MAC Address Clone A 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.

  • Page 21: The Setup Tab - Advanced Routing

    Wireless-B Broadband Router The Setup Tab - Advanced Routing This tab is used to set up the Router’s advanced functions. Dynamic Routing will automatically adjust how packets travel on your network. Static Routing sets up a fixed route to another network destination. NAT.

  • Page 22: The Wireless Tab - Basic Wireless Settings

    Wireless-B Broadband Router Click the Show Routing Table button to view the Static Routes you’ve already set up. For each route, the Destination IP address, Subnet Mask, Gateway, and Interface are displayed . Click the Refresh button to update the information.

  • Page 23: The Wireless Tab - Wireless Security

    Wireless-B Broadband Router The Wireless Tab - Wireless Security The Wireless Security settings configure the security of your wireless network. Click the radio button next to Enable to enable Wireless Security before choosing your options. Click the radio button next to Disable if you need to disable Wireless Security.

  • Page 24: Figure 5-17: Wireless Tab - Wep

    Wireless-B Broadband Router • Default Key. Select which WEP key (1-4) will be used when the Gateway sends data. Make sure that the receiving device (wireless client) is using the same key. • WEP Keys 1-4. WEP keys enable you to create an encryption scheme for wireless network transmissions. If you are not using a Passphrase, then manually enter a set of values.

  • Page 25: The Wireless Tab - Wireless Network Access

    Wireless-B Broadband Router The Wireless Tab - Wireless Network Access Wireless network access can be filtered by using the MAC addresses of the wireless devices transmitting within your network’s radius. Wireless Network Access. If you select Allow All, all computers will be allowed access to the wireless network. To restrict access to the network, select Restrict Access.

  • Page 26: The Wireless Tab - Advanced Wireless Settings

    Wireless-B Broadband Router The Wireless Tab - Advanced Wireless Settings This 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, advertising to the other wireless points in your network at what rates the Router can transmit.

  • Page 27: Figure 5-21: Security Tab - Filter

    Wireless-B Broadband Router RTS Threshold. Should you encounter inconsistent data flow, only minor reduction of the default value, 2346, 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.

  • Page 28: The Security Tab - Vpn Passthrough

    Wireless-B Broadband Router 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.

  • Page 29: The Applications And Gaming Tab - Port Range Forwarding

    Wireless-B Broadband Router The Applications and Gaming Tab - Port Range Forwarding The 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.

  • Page 30: The Applications And Gaming Tab - Port Triggering

    Wireless-B Broadband Router The Applications and Gaming Tab - Port Triggering Port Triggering Port 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.

  • Page 31: The Applications And Gaming Tab - Dmz

    Wireless-B Broadband Router The Applications and Gaming Tab - DMZ The 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.

  • Page 32: The Administration Tab - Log

    Wireless-B Broadband Router To back up or restore a configuration, click the Backup and Restore button and the Backup & Restore Configuration screen will appear. To back up a configuration, click the Backup button. To restore a configuration, click the Browse button to find the file, then click the Restore button.

  • Page 33: The Administration Tab - Firmware Upgrade

    Wireless-B Broadband Router The Administration Tab - Firmware Upgrade IMPORTANT: Upgrading the firmware could eraseall of your settings (WEP Encryption, Wireless and LAN settings, etc.), and replace them with the factory defaults. Linksys recommends that you back up your configuration settings before you upgrade the firmware.

  • Page 34: The Administration Tab - Factory Defaults

    Wireless-B Broadband Router The Administration Tab - Factory Defaults Click the Yes 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 by default.

  • Page 35: The Status Tab - Router

    Wireless-B Broadband Router The Status Tab - Router The Router screen on the Status Tab displays the Router’s current status. Firmware Version. This is the Router’s current firmware. MAC Address. This is the Router’s MAC Address, as seen by your ISP. Login Type.

  • Page 36: The Status Tab - Local Network

    Wireless-B Broadband Router The Status Tab - Local Network The Local Network screen on the Status Tab displays the status of your network. Local 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.

  • Page 37: Appendix A:troubleshooting

    Wireless-B Broadband Router Appendix A: Troubleshooting This 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.
  • Page 38 Wireless-B Broadband Router 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.
  • Page 39 Wireless-B Broadband Router C. In the command prompt, type ping followed by your Internet or Internet IP address and press the Enter key. The Internet or Internet IP Address can be found on the Status screen of the Router’s web-based utility. For example, if your Internet or Internet IP address is 1.2.3.4, you would enter ping 1.2.3.4 and press the Enter key.
  • Page 40 Wireless-B Broadband Router 7. 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;...
  • Page 41 Wireless-B Broadband Router 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.
  • Page 42 Wireless-B Broadband 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 =>...
  • Page 43 Wireless-B Broadband Router • 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: 192.168.1.50 Subnet Mask: 255.255.255.0...

  • Page 44: Frequently Asked Questions

    Wireless-B Broadband Router 17. 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.
  • Page 45 Wireless-B Broadband Router 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 LAN side of the Router.
  • Page 46 Wireless-B Broadband Router the same time, even if on the same LAN (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.
  • Page 47 Wireless-B Broadband Router 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.
  • Page 48 Wireless-B Broadband Router • 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.
  • Page 49 Wireless-B Broadband Router 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.
  • Page 50 Wireless-B Broadband Router 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.

  • Page 51: Appendix B: Wireless Security

    So, make it harder for a hacker to get that information. Change the administrator’s password regularly. Appendix B: Wireless Security Security Precautions 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.
  • Page 52 Wireless-B Broadband Router SSID. 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.
  • Page 53 Wireless-B Broadband Router WPA Pre-Shared Key. If you do not have a RADIUS server, select the type of algorithm, 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 how often it should change the encryption keys.

  • Page 54: Appendix C: Upgrading Firmware

    Wireless-B Broadband Router Appendix C: Upgrading Firmware The Access Point's firmware is upgraded through the Web-Utility's Help tab. Follow these instructions: 1. Open Linksys's website at www.linksys.com/international. 2. Select your region, if necessary, and country. 3. Select the Router from the Products tab. 4.

  • Page 55: Appendix D: Windows Help

    Wireless-B Broadband Router Appendix D: Windows Help 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/IP Before a computer can communicate with the Router, TCP/IP must be enabled.

  • Page 56: Appendix E: Finding The Mac Address And Ip Address For Your Ethernet Adapter

    Wireless-B Broadband Router Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter This 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.

  • Page 57: For The Router's Web-Based Utility

    Wireless-B Broadband Router 3. Write down the Physical Address as shown on your computer screen; 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. Note: The MAC address is also called the Physical Address.

  • Page 58: Appendix F: Glossary

    Wireless-B Broadband Router Appendix F: Glossary 802.11a - An IEEE wireless networking standard that specifies a maximum data transfer rate of 54Mbps and an operating frequency of 5GHz. 802.11b - An IEEE wireless networking standard that specifies a maximum data transfer rate of 11Mbps and an operating frequency of 2.4GHz.
  • Page 59 Wireless-B Broadband Router Buffer - A block of memory that temporarily holds data to be worked on later when a device is currently too busy to accept the data. Cable Modem - A device that connects a computer to the cable television network, which in turn connects to the Internet.
  • Page 60 Wireless-B Broadband Router Dynamic IP Address - A temporary IP address assigned by a DHCP server. Encryption - Encoding data to prevent it from being read by unauthorized people. Ethernet - An IEEE standard network protocol that specifies how data is placed on and retrieved from a common transmission medium.
  • Page 61 Wireless-B Broadband Router 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 band used in wireless networking transmissions.
  • Page 62 Wireless-B Broadband Router 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.
  • Page 63 Wireless-B Broadband Router TCP/IP (Transmission Control Protocol/Internet Protocol) - A network protocol for transmitting data that requires acknowledgement from the recipient of data sent. 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 uses UDP and has no directory or password capability.

  • Page 64: Appendix G: Specifications

    Wireless-B Broadband Router Appendix G: Specifications Standards IEEE 802.3, IEEE 802.3u, IEEE 802.11b Channels 11 Channels (US, Canada), 13 Channels (most of Europe) 14 Channels (Japan) Ports One 10/100 RJ-45 port for Cable/DSL Modem Connection Four 10/100 RJ-45 Switched ports Speed 10/100Mbps (Half Duplex) 20/200 (Full Duplex) Cabling Type...

  • Page 65: Appendix H: Warranty Information

    Wireless-B Broadband Router Appendix H: Warranty Information Linksys warrants to You that, for a period of one year (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.

  • Page 66: Appendix I: Regulatory Information

    Wireless-B Broadband Router Appendix I: Regulatory Information FCC STATEMENT This 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.
  • Page 67 Wireless-B Broadband Router 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.

  • Page 68: Appendix J: Contact Information

    Wireless-B Broadband Router Appendix J: Contact Information Need to contact Linksys? Visit us online for information on the latest products and updates to your existing products at: http://www.linksys.com/international If you experience problems with any Linksys product, you can e-mail us at: In Europe E-mail Address Austria...

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