Cisco Systems BEFSR41 For the Router’s Web-based Utility, Figure C-3 MAC Address/Physical Address

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EtherFast Cable/DSL Router with 4-Port Switch

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.

The example shows the Ethernet adapter’s IP address as 192.168.1.100. Your computer may show something different.

For the Router’s Web-based Utility

For MAC filtering, enter the 12-digit MAC address in the field provided, without any hyphens.

For MAC address cloning, enter the 12-digit MAC address in the MAC Address fields, two digits per field. For more details, refer to “Chapter 5: Configuring the Router.”

Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter

Figure C-3: MAC Address/Physical Address

Figure C-4: MAC Filtering

Figure C-5: MAC Address Clone

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For the Router’s Web-based Utility

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Contents Cable/DSL Router Copyright and Trademarks How to Use this GuideWord definition Table of Contents Common Problems and Solutions Frequently Asked Questions Appendix a TroubleshootingAppendix B Upgrading Firmware Ethernet AdapterBack Panel List of Figures23 Administration Tab Management Welcome IntroductionWhat’s in this Guide? EtherFast Cable/DSL Router with 4-Port Switch An Introduction to Local Area Networks Networking BasicsUse of IP Addresses Networking Basics Use of IP Addresses Getting to Know the Router Reset Button Reset button can be used in one of two waysFront Panel Using the Setup Wizard Connecting the RouterUsing the Quick Installation or User Guide OverviewExample of a Typical Network Connection InstructionsSetup Configuring the RouterSecurity Administration How to Access the Web-based UtilityApplications & Gaming StatusInternet Setup Setup Tab Basic SetupInternet Connection Type Obtain an IP AutomaticallyPPPoE Static IPRAS Heart Beat Signal Heart Beat SignalOptional Settings Network SetupPacket a unit of data sent over a network Router IP Network Address Server Settings DhcpDynDNS.org Setup Tab DdnsTZO.com MAC Clone Setup Tab MAC Address CloneAdvanced Routing Setup Tab Advanced RoutingDynamic Routing Static Routing14 Routing Table Entry List Filter IP Address Range Security Tab FilterFilter Port Range Filter MAC AddressConfiguring the Router Security Tab Filter VPN Passthrough Security Tab VPNPort Range Forwarding Applications & Gaming Tab Port Range ForwardingPort Range Port Triggering Applications & Gaming Tab Port TriggeringTriggered Range Forwarded RangeUPnP Forwarding Applications & Gaming Tab UPnP ForwardingEtherFast Cable/DSL Router with 4-Port Switch DMZ Applications & Gaming Tab DMZDevice Priority Applications & Gaming Tab QoSEthernet Port Priority Application PriorityEtherFast Cable/DSL Router with 4-Port Switch Router Access Administration Tab ManagementLocal Router Access Remote Router AccessConfiguring the Router Administration Tab Management Log Administration Tab LogFactory Defaults Administration Tab Factory DefaultsUpgrade Firmware Administration Tab Firmware UpgradeInformation Status Tab RouterLocal Network Status Tab Local NetworkCommon Problems and Solutions Appendix a TroubleshootingFor Windows 98 and Millennium Need to set a static IP address on a PCFor Windows XP For WindowsWant to test my Internet connection EtherFast Cable/DSL Router with 4-Port Switch Am not able to access the Router’s Web-based Utility Setup Need to set up a server behind my Router Application Start and End Protocol IP Address EnabledCan’t get the Internet game, server, or application to work For Microsoft Internet Explorer 5.0 or higher To start over, I need to set the Router to factory defaultFor Netscape 4.7 or higher Firmware upgrade failed Need to upgrade the firmwareMy DSL service’s PPPoE is always disconnecting Need to use port triggering Where is the Router installed on the network? Frequently Asked QuestionsIs IPSec Passthrough supported by the Router? Does the Router support IPX or AppleTalk?Does the Router support ICQ send file? If all else fails in the installation, what can I do?How can I block corrupted FTP downloads? Is the Router cross-platform compatible? What is DMZ Hosting?Which modems are compatible with the Router? 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 UtilityShared Resources Appendix D Windows HelpNetwork Neighborhood/My Network Places Appendix E Glossary EtherFast Cable/DSL Router with 4-Port Switch Packet a unit of data sent over a network EtherFast Cable/DSL Router with 4-Port Switch EtherFast Cable/DSL Router with 4-Port Switch Four 10/100 RJ-45 Switched Ports Appendix F SpecificationsModel BEFSR41 ver Standards PortsStorage Humidity Operating HumidityLimited Warranty Appendix G Warranty InformationFCC Statement Appendix H Regulatory InformationNeed to contact Linksys? Appendix I Contact InformationInformation section in this Guide

BEFSR41 specifications

The Cisco Systems BEFSR41 is a versatile and robust broadband router that has gained popularity for its reliability and feature set, catering to both home users and small businesses. This device integrates an 802.3 Ethernet switch with a wide area network (WAN) port, allowing users to connect multiple local area network (LAN) devices to the internet simultaneously.

One of the standout features of the BEFSR41 is its ability to support up to four Ethernet ports, which facilitates easy connection for computers, printers, and other network devices. This multi-port functionality promotes efficient resource sharing within a network, enabling users to share files, printers, and Internet access seamlessly. The router operates using a robust NAT (Network Address Translation) technology, which enhances network security by ensuring that local IP addresses are not exposed directly to the internet.

The BEFSR41 supports DHCP (Dynamic Host Configuration Protocol), allowing for automatic IP address assignment to connected devices, which simplifies the network setup for users. Furthermore, its built-in firewall features help protect against unauthorized access and potential threats from the internet, making it an ideal choice for small office or home office settings. The router also supports port forwarding, allowing users to configure access for specific applications, such as online gaming or video conferencing.

In terms of connectivity, the BEFSR41 is designed for high-speed broadband connections, making it suitable for DSL or cable internet services. The device offers a straightforward setup process, typically involving a web-based interface that simplifies configuration for users of all technical levels. The compact design and ease of installation make it a convenient choice for those looking to enhance their home or office network.

Additionally, the BEFSR41 supports basic Quality of Service (QoS) features, which enable prioritization of traffic for applications that require higher bandwidth or lower latency. Users can configure these settings to ensure that critical applications receive the necessary resources, promoting a smoother experience during activities like streaming or video calls.

Lastly, the Cisco BEFSR41 is known for its durability and longevity, reflecting the high standards associated with Cisco products. Although newer models and technologies have emerged since its launch, the BEFSR41 remains a solid option for users seeking a reliable and efficient router for basic networking needs. Whether for a small business or a home network, this device offers the essential features and functionality to support daily internet activities.
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