OpenVPN is a robust and highly flexible tunneling application that uses all of the encryption, authentication, and certification features of the OpenSSL library to securely tunnel IP networks over a single TCP/UDP port.
Discussion forums and project wiki can be found here:
OpenVPN is the best. I use ExpressVPN. I've never been happier.
Great program. Btw pls consider increasing config limit of openvpn gui from 50 to at least 200 or more. The latest build 1.0.7 only allows 50 config limit. Witopia's 1.0.3 openvpn gui was modified increased to 100 limit ages ago. Personally I am forced to use alternative gui that allows more than that since I have plenty of configs.
This software is excellent
Excellent free cross-platform VPN software