How To Set Up PPTP VPN Server With OpenBSD and npppd
Convenient but utterly insecure
The Point-to-Point Tunneling Protocol (PPTP) is an obsolete method for implementing virtual private networks. It has many well known security issues, and nowadays shouldn't be used at all. However, all Microsoft Windows versions from last two decades ship with PPTP client included which makes it very convenient. As of OpenBSD 5.3, npppd – New Point to Point Protocol Daemon – became a part of OpenBSD base system. The following article describes how to configure it as a PPTP server which authenticates users from RADIUS.