PPTP VPN and OpenVPN

Within the StudNet VPN connection for Internet dial-in is called Internet Login. There are two possible VPN protocol options.

The PPTP VPN is a standard protocol. It has proven stable over a long period of time. In addition there is OpenVPN.

We will list pros and cons of the two protocols in the following comparision.

PPTP VPN

Pros:

  • has been stable for a long period of time
  • extensively tested
  • supported by every major operating system (including old Windows versions)
  • based on official standards (developed by Microsoft and others)
  • IPv6 support

Cons:

  • poorly encrypted, based on the quality of the used password
  • issues with third party firewalls and anti virus software, which might result in disconnects (under Windows)
  • complicated setup under Linux

OpenVPN

Pros:

  • open source VPN protocol
  • no problems with firewalls and disconnects (uses connection less protocol)
  • good integration in Linux
  • strong encryption

Cons:

  • non-standard
  • currently no IPv6 support possible
  • Windows access only through workaround on server side possible (Windows tun device not available)
  • Windows version needs administrator rights
  • suboptimal performance due to strong encryption and userspace implementation