OpenVPN Wire Protocol (work in progress) OpenVPN is an open source SSL/TLS based VPN solution which had its first release in May 2001. This document describes the wire protocol OpenVPN makes use of for establishing end-to-end-connections. Even though OpenVPN bases its communication on SSL/TLS, it is not a traditional SSL/TLS protocol which utilizes only TCP. OpenVPN supports some enhanced security features as well as providing SSL/TLS connections both over