Network related terminology and RFCs | Joachim De Zutter
Network address translation (NAT) / IP Masquerading
Keepalive
NAT traversal
Port forwarding
Firewall
STUN
UDP hole punching
Traversal Using Relays around NAT (TURN)
Interactive Connectivity Establishment (ICE)
RFC3581: An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing (RPORT)
RFC5389: Session Traversal Utilities for NAT (STUN)
(SIP) Application-level gateway (ALG)
RFC6052: IPv6 Addressing of IPv4/IPv6 Translators (NAT64)