» "stun" redirects here. For other topics including this term, see stun (disambiguation). STUN's an Internet standards-track suite of methods, including a network protocol, used in NAT traversal for applications of real-time voice, video, messaging, and other interactive IP communications. In the original specification in RFC 3489, STUN was an acronym for Simple Traversal of User Datagram Protocol through Network Address Translators (NATs), but this title has been changed in a specification of… (More on Stun)