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.
A Linux port of the OpenBSD/FreeBSD Cryptographic Framework (OCF). This port aims to bring full asynchronous HW/SW crypto acceleration to the Linux kernel, OpenSwan, OPenSSL and applications using DES, 3DES, AES, MD5, SHA, PublicKey, RNGs and more.