PPTP extends the strict authentication and encryption security available to computers running RAS under Windows NT Server version 4.0, Windows NT Workstation version 4.0, or Windows 95 to PPTP clients on the Internet. PPTP also can protect the PPTP server and private network by ignoring all but PPTP traffic. Despite the strict security, it is very simple to use PPTP with existing firewalls. This section will help you understand and plan the following:
· authentication
· access control
· data encryption
· PPTP packet filtering
· using third-party firewalls