Linksys BEFSR81 manual Uses NAT and TCP/IP port inspections

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Instant Broadband Series

Can multiple gamers on the LAN get on one game server and play simultaneous- ly with just one public IP address? It depends on the which network game or what kind of game server you are using. For example, Unreal Tournament supports multi-login with one public IP.

How can I not receive corrupted FTP downloads? If you are experiencing cor- rupted files when you download a file with your FTP client, try using another FTP program.

Web page hangs, corrupt downloads, or nothing but junk characters are being displayed on the screen. What do I need to do? Force your NIC to 10Mbps or half duplex mode, and turn off the "Auto-negotiate" feature of your NIC as a temporary measure. (Please look at the Network Control Panel, in your Ethernet Adapter's Advanced Properties tab.). 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 for at least three seconds and 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 Linksys website, www.linksys.com.

How can I find upgrades to the Router’s firmware? All Linksys firmware upgrades are posted on the Linksys website at www.linksys.com, where they can downloaded for free. The Router's firmware can be upgraded with TFTP programs.

Will the Router function in a Macintosh environment? Yes, but the Router's setup pages are accessible only through Internet Explorer or Netscape Navigator, versions 4.0 or higher for Macintosh.

With which type of firewall is the Router equipped? The Cable/DSL Router

uses NAT and TCP/IP port inspections.

Does the Router do stateful packet inspection? No

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.

EtherFast Cable/DSL Routers

What is DMZ? 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 stat- ic IP if you want to use DMZ.

If DMZ 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.

Will the Router allow me to use my own public IPs and Domain, or do I have to use the IPs provided by the Router? The router mode allows for customiza-

tion of your public IPs and Domain.

Does the Router replace a modem? Is there a cable or DSL modem in the Router? No, this version of the Router must work in conjunction with a cable or DSL modem.

Which modems are compatible with the Router? The Router is compatible with virtually any cable or DSL modem that supports Ethernet.

What are the advanced features of the Router? The Router's advanced features include Filters, Forwarding, Dynamic Routing, Static Routing, DMZ host and QoS.

Does Linksys provided syslog support? No, Linksys does not currently provide

syslog support.

How can I check whether I have static or DHCP IP Addresses? Consult your ISP

to confirm the information.

How do I get mIRC to work with the Router? Set port forwarding to 113 for the

computer on which you are using mIRC.

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Contents EtherFast Cable/DSL Router Copyright & Trademarks Table of Contents Introduction8-Port Router’s Rear Panel Package ContentsSystem Requirements Reset Button 8-Port Router’s Front Panel LEDsConnecting The Cable/DSL Router to Your Network Connecting Everything Together & Booting UpOverview About Static & Dynamic IP AddressesConfiguring Your Network with the Cable/DSL Router Configuring the Cable/DSL RouterCable/DSL Router’s Setup page will appear Configuring Your PCs to Connect to the Cable/DSL Router Quick & Easy Administration Cable/DSL Router’s Web-based UtilitySetup Password Status EtherFast Cable/DSL RouterDhcp HelpTo Modify Filter Settings Filters ForwardingDynamic Routing Static Routing DMZ Host Quality of Service Troubleshooting Common Problems and SolutionsFrequently Asked Questions Uses NAT and TCP/IP port inspections Snmp Functions How to Ping Your ISP’s E-mail & Web AddressesAppendix Installing the TCP/IP Protocol Step Two Pinging for a Web AddressTwisted-Pair Cabling Environmental Port Router SpecificationsCrimping Your Own Network Cables Customer Support Web FTP SiteCopyright 2000 Linksys, All Rights Reserved
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BEFSR81 specifications

The Linksys BEFSR81 is a highly regarded router that stands as a staple in home networking solutions. With its robust set of features, it has catered to both casual users and technology enthusiasts alike. The BEFSR81 is primarily known for its versatile connectivity options, making it a popular choice for users looking to connect multiple devices without compromising speed or reliability.

One of the standout features of the Linksys BEFSR81 is its ability to support up to eight Ethernet ports, allowing for extensive wired connections. This is particularly beneficial for users with multiple devices that require stable internet access, such as gaming consoles, desktop computers, and smart home devices. Additionally, the router supports advanced networking features, including DHCP server capabilities and network address translation (NAT), further optimizing performance and security.

In terms of security, the BEFSR81 offers stateful packet inspection firewalls and support for Wi-Fi Protected Access (WPA) encryption, ensuring that users' data and privacy are well-protected. It also includes features like MAC address filtering, which allows users to create a whitelist of devices permitted to access the network, bolstering security even further.

The Linksys BEFSR81 adopts a user-friendly interface that simplifies the setup process, making it accessible for individuals with varying levels of technical expertise. Users can manage their network settings effortlessly via the web-based management interface, enabling them to configure passwords, adjust settings, and monitor network activity.

Moreover, the BEFSR81 supports Quality of Service (QoS) features that prioritize bandwidth for certain applications, ensuring that streaming services, online gaming, and video conferencing perform optimally without lag. This is particularly advantageous in households with numerous users engaging in data-intensive activities simultaneously.

Overall, the Linksys BEFSR81 remains a reliable choice for those seeking a well-rounded router that combines a feature-rich design with robust performance. Whether for home office use, casual browsing, or intensive gaming, the BEFSR81 meets the demands of modern networking needs, ensuring a seamless and secure internet experience for its users.
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