Re: [Users] UA behind NAT puts public IP in Contact, Via - help

Hi Bogdan, Bogdan-Andrei Iancu wrote: You are right. No, I cannot disable it. There is no such option :-((( I send you the trace of INVITE transaction as seen from LAN behind NAT. It shows that also SDP is rewritten. -- Regards, Arek Bekiersz --------------------------------------------------------------------------- Packet 1 Source IP Address:192.168.1.200 Destination IP Address:proxy_public_ip INVITE sip:1234@proxy_realm SIP/2.0. Via: SIP/2.0/udp nat_public_ip:61001;branch=z9hG4bK483828829A0FFE1CBE2D351EC40C9. From: <sip:5678@proxy_realm>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2. To: <sip:1234@proxy_realm>. Call-ID: 4B7150B7D8D94964AE0470E367DE9@nat_public_ip. CSeq: 5 INVITE. Contact: <sip:5678@nat_public_ip:61001;uniq=0FC6DA2B97704905AA040333C2B03>. Max-Forwards: 70. Expires: 120. User-Agent: trouble-user-agent . Supported: 100rel, replaces. Allow-Events: telephone-event, refer. Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, UPDATE, PRACK, INF O, SUBSCRIBE, NOTIFY, REFER, MESSAGE. Content-Type: application/sdp. Accept: application/sdp, multipart/mixed. Accept-Encoding: identity. Content-Length: 277. . v=0. o=user 6744156 6744156 IN IP4 nat_public_ip. s=call. c=IN IP4 nat_public_ip. t=1140702179 1140705779. m=audio 7078 RTP/AVP 2 102 18 8 101. a=sendrecv. a=rtpmap:2 G726-32/8000. a=rtpmap:102 G726-32/8000. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-11. a=rtcp:7079. --------------------------------------------------------------------------- Packet 2 Source IP Address:proxy_public_ip Destination IP Address:192.168.1.200 SIP/2.0 407 Proxy Authentication Required. Via: SIP/2.0/udp nat_public_ip:61001;branch=z9hG4bK483828829A0FFE1CBE2D351EC40C9. From: <sip:5678@proxy_realm>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2. To: <sip:1234@proxy_realm>;tag=935ab969d5b642f019e17a3a52b4e4b2.341c. Call-ID: 4B7150B7D8D94964AE0470E367DE9@nat_public_ip. CSeq: 5 INVITE. Proxy-Authenticate: Digest realm="..... Server: Sip EXpress router. Content-Length: 0. . --------------------------------------------------------------------------- Packet 3 Source IP Address:192.168.1.200 Destination IP Address:proxy_public_ip ACK sip:1234@proxy_realm SIP/2.0. Via: SIP/2.0/udp nat_public_ip:61001;branch=z9hG4bK483828829A0FFE1CBE2D351EC40C9. From: <sip:5678@proxy_realm>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2. To: <sip:1234@proxy_realm>;tag=935ab969d5b642f019e17a3a52b4e4b2.341c. Call-ID: 4B7150B7D8D94964AE0470E367DE9@nat_public_ip. CSeq: 5 ACK. User-Agent: trouble-user-agent . Content-Length: 0. . --------------------------------------------------------------------------- Packet 4 Source IP Address:192.168.1.200 Destination IP Address:proxy_public_ip INVITE sip:1234@proxy_realm SIP/2.0. Via: SIP/2.0/udp nat_public_ip:61001;branch=z9hG4bK0DA7F19CA20D7B6DA35154CA9467C. From: <sip:5678@proxy_realm>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2. To: <sip:1234@proxy_realm>. Call-ID: 4B7150B7D8D94964AE0470E367DE9@nat_public_ip. CSeq: 6 INVITE. Contact: <sip:5678@nat_public_ip:61001;uniq=0FC6DA2B977049 05AA040333C2B03>. Proxy-Authorization: Digest username="5678", realm="..... Max-Forwards: 70. Expires: 120. User-Agent: trouble-user-agent . Supported: 100rel, replaces. Allow-Events: telephone-event, refer. Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, UPDATE, PRACK, INF O, SUBSCRIBE, NOTIFY, REFER, MESSAGE. Content-Type: application/sdp. Accept: application/sdp, multipart/mixed. Accept-Encoding: identity. Content-Length: 277. . v=0. o=user 6744156 6744156 IN IP4 nat_public_ip. s=call. c=IN IP4 nat_public_ip. t=1140702179 1140705779. m=audio 7078 RTP/AVP 2 102 18 8 101. a=sendrecv. a=rtpmap:2 G726-32/8000. a=rtpmap:102 G726-32/8000. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-11. a=rtcp:7079. --------------------------------------------------------------------------- Packet 5 Source IP Address:proxy_public_ip Destination IP Address:192.168.1.200 SIP/2.0 100 trying -- your call is important to us. Via: SIP/2.0/udp nat_public_ip:61001;branch=z9hG4bK0DA7F19CA20D7B6DA35154CA9467C. From: <sip:5678@proxy_realm>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2. To: <sip:1234@proxy_realm>. Call-ID: 4B7150B7D8D94964AE0470E367DE9@nat_public_ip. CSeq: 6 INVITE. Server: Sip EXpress router. Content-Length: 0. . --------------------------------------------------------------------------- Packet 6 Source IP Address:proxy_public_ip Destination IP Address:192.168.1.200 SIP/2.0 180 Ringing. Via: SIP/2.0/udp nat_public_ip:61001;branch=z9hG4bK0DA7F19CA20D7B6DA35154CA9467C. From: <sip:5678@proxy_realm>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2. To: <sip:1234@proxy_realm>;tag=as490a0c26. Call-ID: 4B7150B7D8D94964AE0470E367DE9@nat_public_ip. CSeq: 6 INVITE. User-Agent: good-ua Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER. Contact: <sip:1234@good-ua-ip>. Content-Length: 0. . --------------------------------------------------------------------------- Packet 8 Source IP Address:proxy_public_ip Destination IP Address:192.168.1.200 SIP/2.0 200 OK. Via: SIP/2.0/udp nat_public_ip:61001;branch=z9hG4bK0DA7F19CA20D7B6DA35154CA9467C. Record-Route: <sip:1234@proxy_public_ip;ftag=A37DA72FCC637B1D7AEB5AEAFEBC2;lr=on>. From: <sip:5678@proxy_realm>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2. To: <sip:1234@proxy_realm>;tag=as490a0c26. Call-ID: 4B7150B7D8D94964AE0470E367DE9@nat_public_ip. CSeq: 6 INVITE. User-Agent: good-ua Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER. Contact: <sip:1234@good-ua-ip>. Content-Type: application/sdp. Content-Length: 297. . v=0. o=root 10049 10049 IN IP4 good-ua-ip. s=session. c=IN IP4 good-ua-ip. t=0 0. m=audio 10276 RTP/AVP 2 5 8 0 101. a=rtpmap:2 G726-32/8000. a=rtpmap:5 DVI4/8000. a=rtpmap:8 PCMA/8000. a=rtpmap:0 PCMU/8000. a=rtpmap:101 telephone-event/8000. a=fmtp:101 0-16. a=silenceSupp:off - - - -. --------------------------------------------------------------------------- Packet 9 Source IP Address:192.168.1.200 Destination IP Address:proxy_public_ip ACK sip:1234@194.183.228.175 SIP/2.0. Via: SIP/2.0/UDP nat_public_ip:61001;branch=z9hG4bK4E416AB44C125E935C1A974F2EA86. Route: <sip:1234@proxy_public_ip;ftag=A37DA72FCC637B1D7AEB5AEAFEBC2;lr=on>. From: <sip:5678@proxy_realm>;tag=A37DA72FCC637B1D7AEB5AEAFEBC2. To: <sip:1234@proxy_realm>;tag=as490a0c26. Call-ID: 4B7150B7D8D94964AE0470E367DE9@nat_public_ip. CSeq: 6 ACK. Contact: <sip:5678@nat_public_ip:61001;uniq=0FC6DA2B97704905AA040333C2B03>. Max-Forwards: 70. User-Agent: trouble-user-agent . Content-Length: 0.