The system and method described herein may provide unified transport and security protocols. In particular, the unified transport and security protocols may include a Secure Frame Layer transport and security protocol that includes stages for initially configuring a requester device and a responder device, identifying the requester device and the responder device to one another, and authenticating message frames communicated between the requester device and the responder device. Additionally, the unified transport and security protocols may further include a Secure Persistent User Datagram Protocol that includes modes for processing message frames received at the requester device and the responder device, recovering the requester device in response to packet loss, retransmitting lost packets sent between the requester device and the responder device, and updating location information for the requester device to restore a communications session between the requester device and the responder device.