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Filters and Remote Access Configurations

  • Article
  • 07/03/2012

Applies To: Windows Server 2008

For the common Routing and Remote Access scenarios, you should consider securing traffic to and from the server running Routing and Remote Access and the network behind the server. Network traffic can be secured using IP packet filtering, Windows Firewall, or both. For more information, see Common Remote Access Configurations.

The following table describes the possible security methods for each scenario.

Scenario Security Location and Method

Virtual private network (VPN)

Network interface that connects to the Internet

  • Static filters. This is the recommended method. Select Enable security on the selected interface by setting up static packet filters in the Routing and Remote Access Setup Wizard.

Note
You will need to add ports for any service added, such as HTTP, after setting up static filters.

  • Windows Firewall. You will need to manually configure the VPN exception.

Important

Although you can configure both static filters and Windows Firewall on the same interface, this is not recommended for performance reasons. You must configure the same filter settings in both methods.

Network interface that connects to the LAN

Static filters. Configure on private, public, and demand-dial interfaces.

Network address translation (NAT)

Network interface that connects to the Internet

Windows Firewall.

Network interface that connects to the LAN

Static filters can be added to the private interface to protect against threats from internal clients.

VPN and NAT

Network interface that connects to the Internet

Windows Firewall. The filters to allow only VPN packets can be automatically added while using the Routing and Remote Access Setup Wizard.

Network interface that connects to the LAN

Static filters can be added to the private interface to protect against threats from internal clients.

Secure connection between two private networks (demand-dial, inbound)

Same as VPN scenario.

Secure connection between two private networks (demand-dial, inbound, and outbound)

Same as NAT scenario.