[Freeswitch-users] Need help in NAT traversal

Виталий Давудов vitaliy.davudov at vts24.ru
Wed Oct 3 11:44:23 MSD 2012


Hi, Anton!

Thanks for your answer!

Problem was resolved on the far side. Freeswitch did not require more 
adjustment.


01.10.2012 23:17, Anton Kvashenkin пишет:
> Which gateway do you use? You can try stun.sipnet.ru 
> <http://stun.sipnet.ru>. Could you please paste sip-messages (use 
> ngrep) from 3-way handshake, also sofia_contact */external_gateway
>
> 2012/10/1 Виталий Давудов <vitaliy.davudov at vts24.ru 
> <mailto:vitaliy.davudov at vts24.ru>>
>
>     Hi!
>     I tried to establish connection between Freeswitch and external
>     gateway which is located behind NAT.
>
>     NAT-gateway is configured to do ip/port forwarding.
>
>     RTP session can't be established. With tcpdump & wireshark that's
>     what I saw:
>
>     |Time     | 91.211.XXX.XXX                        |
>     192.168.0.100                         |
>     |         |                   | 77.246.XXX.XXX |
>     |8,088    |         INVITE SDP (g711A g711U CN)
>     |                   |SIP From: "9260123069"
>     <sip:9260123069 at 91.211.XXX.XXX To:<sip:4959899711 at 77.246.XXX.XXX:5065
>     |         |(5065)   ------------------>  (5065) |                   |
>     |8,088    |         INVITE SDP (g711A g711U CN)
>     |                   |SIP From: "9260123069"
>     <sip:9260123069 at 91.211.XXX.XXX To:<sip:4959899711 at 77.246.XXX.XXX:5065
>     |         |(5065)   ------------------>  (5065) |                   |
>     |8,099    |         100 Trying| |                   |SIP Status
>     |         |(5065)   <------------------  (5065) |                   |
>     |8,116    |         200 Ok SDP (g711A) |                   |SIP Status
>     |         |(5065)   <------------------  (5065) |                   |
>     |8,117    |         ACK       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |8,117    |         ACK       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |8,199    |         RTP (g711A) |                   |RTP Num
>     packets:28  Duration:0.259s SSRC:0x76B458
>     |         |(16694) -------------------------------------->  (49152)  |
>     |8,287    |         RTP (g711A) |                   |RTP Num
>     packets:860  Duration:17.181s SSRC:0xEAC34F46
>     |         |(16694)  <------------------  (49152) |                   |
>     |8,479    |         RTP (g711A) |                   |RTP Num
>     packets:1488 Duration:14.900s SSRC:0x76B458
>     |         |(16694)  ------------------>  (49152) |                   |
>     |10,116   |         200 Ok SDP (g711A) |                   |SIP Status
>     |         |(5065)   <------------------  (5065) |                   |
>     |10,116   |         ACK       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |10,116   |         ACK       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |14,116   |         200 Ok SDP (g711A) |                   |SIP Status
>     |         |(5065)   <------------------  (5065) |                   |
>     |14,116   |         ACK       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |14,116   |         ACK       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |22,116   |         200 Ok SDP (g711A) |                   |SIP Status
>     |         |(5065)   <------------------  (5065) |                   |
>     |22,116   |         ACK       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |22,116   |         ACK       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |23,420   |         BYE       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |23,420   |         BYE       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |24,421   |         BYE       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>     |24,421   |         BYE       | |                   |SIP Request
>     |         |(5065) -------------------------------------->  (5065)   |
>
>     Freeswitch answered to local ip-address of a gateway which used in
>     sip "contact" header. Is it possible to say Freeswitch to use
>     public ip-address which is in the field "from" instead?
>
>     -- 
>     Best regards,
>     Vitaly.
>
>
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>
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-- 
С наилучшими пожеланиями,
Давудов Виталий Федорович
ООО "ВИП-ТЕЛЕКОМ-СЕРВИС"
(Группа компаний "ETERIA")
http://www.vts24.ru
Тел: (495) 989-47-00

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