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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have Kamailio 3.1.0 behind a NAT. We need the Firewall for sip-security reasons. <o:p></o:p></p><p class=MsoNormal>Currently I’m using record_route_preset(“advertised_Address”) for keeping the advertised address in the record-route header. This works for fine when I have all clients running on UDP protocol.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I currently have some TLS clients added to our network, Kamailio does not insert the second record-route header with the advertised-IP whenever there is a call between a UDP and a TLS Client.<o:p></o:p></p><p class=MsoNormal>Instead it inserts the internal/Local IP of the server.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I had also noticed the record_route_preset() function does not include the transport parameter (“transport=UDP” or “transport=TLS”).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I was looking through the source code of Kamailio and found record_route_advertised_address() in record.c . I would like to know how to use this function with the Kamailio config.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards<o:p></o:p></p><p class=MsoNormal>Gnani<o:p></o:p></p></div></body></html>