Linksys BEFSR81 manual Networking Basics Use of IP Addresses

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EtherFast Cable/DSL Router with 8-Port Switch

A DHCP server can either be a designated PC on the network or another network device, such as the Router. By default, the Router’s Internet Connection Type is Obtain an IP automatically (DHCP).

The PC or network device obtaining an IP address is called the DHCP client. DHCP frees you from having to assign

IP addresses manually every time a new user is added to your network.

For DSL users, many ISPs may require you to log on with a user name and password to gain access to the Internet. This is a dedicated, high-speed connection type called Point to Point Protocol over Ethernet (PPPoE). PPPoE is similar to a dial-up connection, but PPPoE does not dial a phone number when establishing a connection. It also will provide the Router with a dynamic IP address to establish a connection to the Internet.

By default, a DHCP server (on the LAN side) is enabled on the Router. If you already have a DHCP server running on your network, you MUST disable one of the two DHCP servers. If you run more than one DHCP server on your network, you will experience network errors, such as conflicting IP addresses. To disable DHCP on the Router, see the Basic Setup section in “Chapter 7: Using the Router’s Web-based Utility.”

Chapter 2: Networking Basics

5

The Use of IP Addresses

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Contents Cable/DSL Router Word definition How to Use this GuideCopyright and Trademarks Table of Contents Ethernet Adapter Appendix a TroubleshootingCommon Problems and Solutions Frequently Asked Questions Appendix B Upgrading FirmwareBack Panel List of FiguresDdns Disabled Welcome IntroductionWhat’s in this Guide? EtherFast Cable/DSL Router with 8-Port Switch Use of IP Addresses Networking BasicsAn Introduction to LANs Networking Basics Use of IP Addresses Getting to Know the Router Reset Button Reset button can be used in one of two waysFront Panel Overview Connecting the RouterConnect a PC Connection InstructionsConfiguring Windows 98 and Millennium PCs Configuring the PCsConfiguring Windows XP PCs Configuring Windows 2000 PCsInternet Protocol TCP/IP for Windows XP Instructions Configuring the RouterStatic IP Obtain an IP Automatically or DhcpRAS PPPoEPptp Heart Beat SignalSecurity Using The Router’s Web-based UtilitySetup Navigating the UtilityStatus Quick and Easy AdministrationAdministration Applications & GamingInternet Setup Basic SetupPPPoE RAS for SingTelPptp Heart Beat SignalRouter IP Network SetupOptional Settings Ddns Network Address Server Settings DhcpTZO.com MAC Address CloneDynDNS.org MAC Clone Advanced Routing14 Routing Table FilterBlock WAN Requests Filter IP Address RangeFilter Port Range Filter MAC AddressPort Range VPN PassthroughPort Range Forwarding Forwarded Range Port TriggeringTriggered Range 20 UPnP Forwarding UPnP ForwardingDMZ Application-based QoS QoSQoS Port-based QoS Router AccessLocal Router Access ManagementIdentification Remote Router AccessUPnP Log25 Incoming Log Table Factory DefaultsInformation Firmware UpgradeUpgrade Firmware Router31 Local Network Local NetworkFor Windows Appendix a TroubleshootingCommon Problems and Solutions For Windows 98 and MillenniumFor Windows XP For Windows 98 and Millennium EtherFast Cable/DSL Router with 8-Port Switch Need to set up a server behind my Router Am not able to access the Router’s Web-based Utility SetupTCP Application Start and End Protocol IP Address EnabledCan’t get the Internet game, server, or application to work For Netscape 4.7 or higher To start over, I need to set the Router to factory defaultNeed to upgrade the firmware For Microsoft Internet Explorer 5.0 or higherMy DSL service’s PPPoE is always disconnecting Firmware upgrade failedNeed to use port triggering Does the Router support IPX or AppleTalk? Frequently Asked QuestionsWhere is the Router installed on the network? Is IPSec Passthrough supported by the Router?How can I block corrupted FTP downloads? How many ports can be simultaneously forwarded? What is DMZ Hosting?Will the Router function in a Macintosh environment? Is the Router cross-platform compatible?How do I get mIRC to work with the Router? How can I check whether I have static or Dhcp IP addresses?Appendix B Upgrading Firmware Figure B-1 Upgrade FirmwareWindows 2000 or XP Instructions Windows 98 or Me InstructionsFigure C-3 MAC Address/Physical Address For the Router’s Web-based UtilityNetwork Neighborhood/My Network Places Appendix D Windows HelpShared Resources Appendix E Glossary EtherFast Cable/DSL Router with 8-Port Switch EtherFast Cable/DSL Router with 8-Port Switch EtherFast Cable/DSL Router with 8-Port Switch EtherFast Cable/DSL Router with 8-Port Switch EtherFast Cable/DSL Router with 8-Port Switch Ports Appendix F SpecificationsEight 10/100 RJ-45 Switched Ports StandardsLimited Warranty Appendix G Warranty InformationFCC Statement Appendix H Regulatory InformationInformation section in this Guide Appendix I Contact InformationNeed to contact Linksys?
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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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