You shouldn’t need to I suppose kamailio is behind nat. If so all you should need to do is set the listen address to something like

listen=udp:192.168.1.10:5060 ADVERTISE 100.100.100.100:5060

Where wow.168.1.10 is your private and 100.100.100.100 is your public up.

When sending locally, kamailio should detect this and not use the advertised public ip.

On Thu, 30 Jan 2020 at 07:21, vinod mn vinodmn.dbit@gmail.com wrote:

Hi , I have a cloud server, when I make call from a sip phone (registered with kamailio), in the INVITE header I am seeing the via header with public IP, is there any way that I can modify via header to send only the private IP. Please let me know, is it possible to replace.

[image: image.png] the via headers that kamailio is sending to sip-gateway is sip-phone ip:192.168.113.112

Via: SIP/2.0/UDP *221.20.20.12:5060 http://221.20.20.12:5060* ;branch=z9hG4bKaa6a.14c65f5675077ae7b0df70b02516979b.0 Via: SIP/2.0/UDP 192.168.113.112 :50386;received= 192.168.113.112 ;branch=z9hG4bK-d87543-550b984016109617-1--d87543-;rport=50386

how to modify the first via header to have private-IP instead of public-IP..

I tried all the replace functions but it is not working.

-- Thanks and regards Vinod.M.N _______________________________________________ Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users