RFC 3489 - STUN - Simple Traversal of User Datagram Protocol (UD Network Working Group J. Rosenberg Request for Comments: 3489 J. Weinberger Category: Standards Track dynamicsoft C. Huitema Microsoft R. Mahy Cisco March 2003 STUN - Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs) Status of this Memo This document specifies an Internet standards track prot