Special Edition Using Microsoft® Windows® Vista

1289

Incoming VPN and Dial-Up Access

be a private, non-Internet-routable address like 192.168.1.100. All data destined for the

remote network is packaged up in PPTP or L2TP packets and sent to the remote host. But

what happens if you want to communicate with two servers—a private server through the

tunnel and a public website on the Internet—at the same time?

When you send data to an IP address that doesn’t clearly belong to the private network’s

range, Windows has two choices: It can pass the data through the tunnel and let the network

on the other end route it on, or it can pass the data without encapsulation and let it travel

directly to the Internet ...