How to Configure the VPN Server?

To continue to configure the VPN server as required, follow these steps.

How to Configure the Remote Access Server as a Router

For the remote access server to forward traffic properly inside your network, you must configure it as a router with either static routes or routing protocols, so that all of the locations in the intranet are reachable from the remote access server.

To configure the server as a router:

1. Click Start, point to Administrative Tools, and then click Routing and Remote Access.
2. Right-click the server name, and then click Properties.
3. Click the General tab, and then click to select Router under Enable this computer as a.
4. Click LAN and demand-dial routing, and then click OK to close the Properties dialog box.

Source: support.microsoft.com/kb/323441