STUN - VoIP-InfoSTUN (Simple Traversal of UDP through NATs (Network Address Translation)) is a protocol for assisting devices behind a NAT firewall or router with their packet routing. RFC 5389 redefines the term STUN as ‘Session Traversal Utilities for NAT’. Note: The STUN RFC states: This protocol is not a cure-all for the problems associated with NAT. STUN enables a device to find out its public IP address and
