A proxy system may use Layer 3 security mechanisms to establish secure communications between two devices. Each device may establish a secure session with the proxy using the same or a different configuration of a secure session. The proxy may pass traffic between the two devices and perform translation of the traffic between the two secure sessions. The proxy may also perform application layer gateway translations for communication traffic. Some embodiments may comprise a distribution or master proxy that may assign a communication session to a slave proxy in a scalable architecture.