Cisco Systems BEFSR41 manual Security Tab VPN, VPN Passthrough

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EtherFast Cable/DSL Router with 4-Port Switch

The Security Tab - VPN

The VPN screen allows you to allow VPN tunnels using IPSec, PPPoE, or PPTP protocols to pass through the Router.

VPN Passthrough

IPSec Passthrough. IPSec (Internet Protocol Security) is a suite of protocols used to implement secure exchange of packets at the IP layer. To allow IPSec Passthrough, click the Enabled button. To disable IPSec Passthrough, click the Disabled button.

PPPoE Passthrough. PPPoE (Point-to-Point over Ethernet) Passthrough allows your PC(s) to use the PPPoE client software provided by your ISP. Some ISPs may request that you use this feature on the Router. To allow PPPoE Passthrough, click the Enabled button. To disable PPPoE Passthrough, click the Disabled button.

PPTP Passthrough. PPTP (Point-to-Point Tunneling Protocol) Passthrough allows the Point-to-Point (PPP) to be tunneled through an IP network. To allow PPTP Passthrough, click the Enabled button. To disable PPTP Passthrough, click the Disabled button.

When you have finished making changes to this screen, click the Save Settings button to save the changes, or click the Cancel Changes button to undo your changes. Help information is shown on the right-hand side of the screen.

Figure 5-17: Security Tab - VPN Passthrough

vpn (virtual private network): a security measure to protect data as it leaves one network and goes to another over the Internet

ipsec (internet protocol security): a VPN protocol used to implement secure exchange of packets at the IP layer

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.

Chapter 5: Configuring the Router

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The Security Tab - VPN

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Contents Cable/DSL Router How to Use this Guide Copyright and TrademarksWord definition Table of Contents Appendix B Upgrading Firmware Appendix a TroubleshootingCommon Problems and Solutions Frequently Asked Questions Ethernet AdapterList of Figures Back Panel23 Administration Tab Management Introduction WelcomeWhat’s in this Guide? EtherFast Cable/DSL Router with 4-Port Switch Networking Basics An Introduction to Local Area NetworksUse of IP Addresses Networking Basics Use of IP Addresses Reset Button Reset button can be used in one of two ways Getting to Know the RouterFront Panel Using the Quick Installation or User Guide Connecting the RouterUsing the Setup Wizard OverviewConnection Instructions Example of a Typical NetworkConfiguring the Router SetupSecurity Applications & Gaming How to Access the Web-based UtilityAdministration StatusInternet Connection Type Setup Tab Basic SetupInternet Setup Obtain an IP AutomaticallyStatic IP PPPoERAS Heart Beat Signal Heart Beat SignalNetwork Setup Optional SettingsPacket a unit of data sent over a network Network Address Server Settings Dhcp Router IPSetup Tab Ddns DynDNS.orgTZO.com Setup Tab MAC Address Clone MAC CloneDynamic Routing Setup Tab Advanced RoutingAdvanced Routing Static Routing14 Routing Table Entry List Filter Port Range Security Tab FilterFilter IP Address Range Filter MAC AddressConfiguring the Router Security Tab Filter Security Tab VPN VPN PassthroughApplications & Gaming Tab Port Range Forwarding Port Range ForwardingPort Range Triggered Range Applications & Gaming Tab Port TriggeringPort Triggering Forwarded RangeApplications & Gaming Tab UPnP Forwarding UPnP ForwardingEtherFast Cable/DSL Router with 4-Port Switch Applications & Gaming Tab DMZ DMZEthernet Port Priority Applications & Gaming Tab QoSDevice Priority Application PriorityEtherFast Cable/DSL Router with 4-Port Switch Local Router Access Administration Tab ManagementRouter Access Remote Router AccessConfiguring the Router Administration Tab Management Administration Tab Log LogAdministration Tab Factory Defaults Factory DefaultsAdministration Tab Firmware Upgrade Upgrade FirmwareStatus Tab Router InformationStatus Tab Local Network Local NetworkFor Windows 98 and Millennium Appendix a TroubleshootingCommon Problems and Solutions Need to set a static IP address on a PCFor Windows For Windows XPWant 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 Application Start and End Protocol IP Address Enabled Need to set up a server behind my RouterCan’t get the Internet game, server, or application to work To start over, I need to set the Router to factory default For Microsoft Internet Explorer 5.0 or higherFor Netscape 4.7 or higher Need to upgrade the firmware Firmware upgrade failedMy DSL service’s PPPoE is always disconnecting Need to use port triggering Is IPSec Passthrough supported by the Router? Frequently Asked QuestionsWhere is the Router installed on the network? Does the Router support IPX or AppleTalk?If all else fails in the installation, what can I do? Does the Router support ICQ send file?How can I block corrupted FTP downloads? What is DMZ Hosting? Is the Router cross-platform compatible?Which modems are compatible with the Router? How can I check whether I have static or Dhcp IP addresses? How do I get mIRC to work with the Router?Figure B-1 Upgrade Firmware Appendix B Upgrading FirmwareWindows 98 or Me Instructions Windows 2000 or XP InstructionsFor the Router’s Web-based Utility Figure C-3 MAC Address/Physical AddressAppendix D Windows Help Shared ResourcesNetwork 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 Model BEFSR41 ver Standards Appendix F SpecificationsFour 10/100 RJ-45 Switched Ports PortsOperating Humidity Storage HumidityAppendix G Warranty Information Limited WarrantyAppendix H Regulatory Information FCC StatementAppendix I Contact Information Need to contact Linksys?Information 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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