JSI Tip 2432. Windows 2000 RAS server silently enables TCP/IP forwarding on all interfaces.

When you enable RRAS on your Windows 2000 server, TCP/IP forwarding is silently enabled on all interfaces.

TCP/IP forwarding is required for RRAS to forward client traffic on the LAN. Without TCP/IP forwarding, RAS clients would only be able to access the RRAS server, not the entire network.

If you wish to disable TCP/IP forwarding, use Administrative Tools / RRAS and right-click the server name. Press Properties / IP and clear the Enable IP Routing box.