Hi all, My experience with FS and TLS has been rather mixed so far. It's been a little inconsistent in keeping NAT sessions up and users discoverable. One thing I've noticed is that FS advertises the wrong information in option packets. The following is what I receive over my TLS session which is working on port 443. 1.2.3.4:443 -(SIP over TLS)-> 10.0.0.99:51132 OPTIONS sip:53178246@10.0.0.99:56494;transport=tls;received=5.6.7.8:51132 SIP/2.0 Via: SIP/2.0/TLS 1.2.3.4:443;branch=z9hG4bK6Kv171Q3U5rrD Route: <sip:53178246@5.6.7.8:51132>;transport=tls Max-Forwards: 70 From: <sip:mod_sofia@1.2.3.4:5060>;tag=Q6XDFHeUUrcHD To: <sip:user@domain.com> Call-ID: 0a052f23-34a8-4158-8c88-fd2a70ffb561_c2RhaSoOYBR6jfJe4ndLoTTKJMrO2gMv CSeq: 71498568 OPTIONS Contact: <sip:mod_sofia@1.2.3.4:5060> User-Agent: FreeSWITCH Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE Supported: timer, path, replaces Allow-Events: talk, hold, conference, presence, as-feature-event, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer Content-Length: 0 Do you see the From and Contact line? How can I rewrite this? Port 5060 has nothing to do there. Thanks and all the best, Emrah