Point-to-point tunneling protocol (PPTP) is a protocol from Microsoft for virtual private networks. A specification was published as an "informational" RFC in 1999.

External links

  • Point-to-Point Tunneling Protocol (PPTP), RFC 2637, July 1999; [1]
  • FAQ on PPTP from Microsoft; [1]
  • FAQ on security flaws in Microsoft's implementation, Bruce Schneier, 1998; [1]
  • Poptop, a PPTP Server for Linux; [1]
  • PPTP Client, a Linux, FreeBSD and NetBSD client; [1]