Windows Server 2003 RRAS to implement a single NIC VPN proxy internet access

RRAS in Windows Server 2003 supports the single NIC VPN feature, and its deployment is simple.

First, enable RRAS.

Open RRAS in Windows Server2003 's administrative tools and enable it.

If your system does not turn off the Windows Firewall and Internet Connection Sharing service is not turned off, you will be prompted to close it before you click "Configure and Enable Routing and Remote Access" to continue.

Because it is a single NIC, you will want to select a custom configuration in the next steps.

In the next configuration interface, select VPN Access and NAT and Basic firewall