Linksys AG241 manual Security Tab VPN, VPN Passthrough, IPSec VPN Tunnel

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Chapter 2

Configuration

The Security Tab > VPN

Virtual Private Networking (VPN) is a security measure that creates a secure connection between two remote locations.The Security > VPN screen allows you to configure your VPN settings to make your network more secure.

Security > VPN

VPN Passthrough

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

PPTP Passthrough  Point-to-Point Tunneling Protocol Passthrough is used to enable VPN sessions to a Windows NT 4.0 or 2000 server. To allow PPTP Passthrough, click Enable. To disable PPTP Passthrough, click Disable.

L2TP Passthrough  Layering 2 Tunneling Protocol Passthrough is used to enable the operation of a VPN over the Internet.To allow L2TP Passthrough, click Enable. To disable L2TP Passthrough, click Disable.

IPSec VPN Tunnel

The VPN Gateway creates a tunnel or channel between two endpoints, so that the data or information between these endpoints is secure.

To establish this tunnel, select the tunnel you wish to create in the Select Tunnel Entrydrop-down box. It is possible to create up to five simultaneous tunnels. Then click Enabled to enable the IPSec VPN tunnel. Once the tunnel is enabled, enter the name of the tunnel in the Tunnel Name field. This is to allow you to identify multiple tunnels and does not have to match the name used at the other end of the tunnel. To delete a tunnel entry, select the tunnel, then click Delete. To view a summary of the settings, click Summary.

VPN Settings Summary

Local Secure Group and Remote Secure Group

The Local Secure Group is the computer(s) on your LAN that can access the tunnel. The Remote Secure Group is the computer(s) on the remote end of the tunnel that can access the tunnel. These computers can be specified by a Subnet, specific IP address, or range.

Local Security Gateway

Remote Security Gateway

The Remote Security Gateway is the VPN device, such as a second VPN Gateway, on the remote end of the VPN tunnel. Enter the IP Address or Domain of the VPN device at the other end of the tunnel. The remote VPN device can be another VPN Gateway, a VPN Server, or a computer with VPN client software that supports IPSec. The IP Address may either be static (permanent) or dynamic (changing), depending on the settings of the remoteVPN device. Make sure that you have entered the IP Address correctly, or the connection cannot be made. Note that this is NOT the IP Address of the local VPN Gateway, but the IP Address of the remote VPN Gateway or device with which you wish to communicate. If you enter an IP address, only that specific IP Address will be able to access the tunnel. If you select Any, any IP Address can access the tunnel.

Encryption  Using Encryption also helps make your connection more secure. There are two different types of encryption: DES (default) or 3DES (3DES is recommended because it is more secure). You may choose either of these, but it must be the same type of encryption that is being used by the VPN device at the other end of the tunnel. Or, you may choose not to encrypt by selecting Disable.

Authentication  Authentication acts as another level of security. There are two types of authentication: MD5 (default) and SHA (SHA is recommended because it is more secure). As with encryption, either of these may be selected, if the VPN device at the other end of the tunnel is using the same type of authentication. Or, both ends of the tunnel may choose to Disable authentication.

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Contents ADSL2 Gateway with 4-Port Switch Copyright and Trademarks Icon DescriptionsOnline Resources Table of Contents Back Panel Front PanelInternet Setup How to Access the Web-Based UtilitySetup Tab Basic Setup Static IP RFC 1483 BridgedIPoA Dynamic IPRFC 2516 PPPoE Bridged Mode OnlyPPPoE Settings PPPoA SettingsTime Setting Network SetupOptional Settings Network Address Server Settings DhcpAdvanced Routing Setup Tab DdnsSetup Tab Advanced Routing Operating ModeAdditional Filters Security Tab FirewallFirewall Static RoutingLocal Secure Group and Remote Secure Group Security Tab VPNVPN Passthrough IPSec VPN TunnelStatus Advanced VPN Tunnel SetupPhase Key ManagementOther Setting Access Restrictions Tab Internet AccessInternet Access Applications & Gaming Tab Single Port Forwarding Applications & Gaming Tab Port Range Forwarding Applications & Gaming Tab Port TriggeringAdvanced QoS Application-based QoSEmail Alerts Administration Tab ReportingGateway Access Remote Gateway AccessPing Test Parameters Administration Tab DiagnosticsAdministration Tab Backup & Restore Status Tab Gateway Administration Tab Firmware UpgradeAdministration Tab Reboot PVC Connection Status Tab Local NetworkStatus Tab DSL Connection DSL StatusAppendix a Troubleshooting Appendix B Specifications Exclusions and Limitations Limited WarrantyObtaining Warranty Service Technical Support General Avis d’Industrie Canada Safety NoticesFCC Statement Industry Canada StatementDansk Danish Miljøinformation for kunder i EU Regulatory Information Norsk Norwegian Miljøinformasjon for kunder i EU Regulatory Information Schedule 1 Linksys Software License Agreement Software in Linksys ProductsSoftware Licenses Preamble ScheduleSoftware License Agreement Software License Agreement No Warranty GNU Lesser General Public License Software License Agreement Software License Agreement Software License Agreement No Warranty Original SSLeay License OpenSSL LicenseSoftware License Agreement
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