Asterisk nat

Problem with a VoIP phone behind NAT - disabling FortiGate

NAT and Firewall Traversal Recommendation – OnSIP Support A NAT router with a built-in SIP ALG can re-write information within the SIP messages (SIP headers and SDP body) making signaling and audio traffic between the client behind NAT … Asterisk trying to send RTP packets to the internal Jan 06, 2013

[Asterisk] TCP transport and NAT for Asterisk - VOIP Tech

WebRTC and Asterisk 14 - Asterisk Blog Aug 23, 2017 NAT Configuration FreePBX 12 - PBX GUI - Documentation Jun 09, 2014

Asterisk Guru

This should be considered good basic LAN network design anyway and multiple instances of NAT will cause problems both in VoIP and elsewhere. One-way audio can occur in either direction, however in-bound audio failure (lack of audio from the outside caller reaching the inside network (LAN) phone) is probably the most common. NAT and Firewall Traversal Recommendation – OnSIP Support