SIPtraversal
SIPtraversal is a term used in telecommunication and networking to describe techniques and components that enable SIP (Session Initiation Protocol) signaling and its media streams to traverse NATs and firewalls. The goal is to allow endpoints located behind one or more NAT devices to establish and maintain VoIP calls with remote endpoints and SIP servers.
Common NAT traversal techniques include STUN (Session Traversal Utilities for NAT), TURN (Traversal Using Relays around
Upstream networks and devices: In home networks, corporate firewalls, and service provider networks, traversal may require
Security and interoperability considerations: NAT traversal increases exposure; use authentication, encryption (TLS for signaling; DTLS-SRTP for