[SR-Users] Kamailio behind NAT

[Алексей Якимкин]

Hello,

Are you ips (LAN_IP and WAN_IP) on sepparate interfaces?

I use add_path for Register requests. It insert header Path:
<sip:10.130.0.23:5070;lr>

My pbx calls to User-Agent throught 10.130.0.23:5070. INVITE(from kamailio)
go out  to internet from 10.130.0.23:5070

This line "$fs = «udp:10.130.0.23:5060»;" don`t work, It produces an error:
(pv [pv_branch.c:62]: pv_get_branchx_helper(): error accessing branch [0])


ср, 29 июн. 2022 г. в 18:55, ZZ Wave <zzwave at gmail.com>:

> I use this with NATed Kamailio and Asterisk for "transparent"
> registrations:
>
>         if (is_method("REGISTER")) {
>             add_path();
>         }
>         if ($Ri=="LAN_IP") {
>                 $fs="udp:WAN_IP:5060";
>         } else {
>                 $fs="udp:LAN_IP:5060";
>         }
>
> AFAIK FreeSwitch supports Path as well but Yate doesn't
>
> ср, 29 июн. 2022 г. в 12:25, Алексей Якимкин <ayakimkin at gmail.com>:
>
>> Hello,
>>
>> I have  kamailio in local network behind NAT. Kamailio have one interface
>> eth1 with ip 10.130.0.23
>>
>> UserAgent - (internet) - (178.0.0.169)router_with_NAT - (LAN) -
>> kamailio+rtpproxy - pbx
>>
>> I made two listeners:
>> listen=udp:10.130.0.23:5070 #to pbx in lan (I don`t want to put via
>> header with 178.0.0.169)
>> listen=udp:10.130.0.23:5060 advertise 178.0.0.169:5060 #to internet
>> (UserAgent need to get via header with 178.0.0.169  )
>>
>>
>> mhomed = 1 # I think It not useful  for my case
>>
>> UserAgent send Register and Invite to 178.0.0.169:5060, Kamailio get it
>> on udp:10.130.0.23:5060
>>
>> Kamailio Relay it to   udp:10.130.0.23:5070
>>
>> My pbx get requests from  udp:10.130.0.23:5070 with via header
>> 10.130.0.23
>>
>> Responses to UserAgent go from  udp:10.130.0.23:5060 with via 178.0.0.169
>>
>>
>> In  RELAY block:
>> if ($Ru == «udp:10.130.0.23:5070») {
>> #set_send_socket(«udp:10.130.0.23:5060»);
>> $fs = «udp:10.130.0.23:5060»;
>> #force_send_socket(«udp:10.130.0.23:5060»);
>> } else {
>> #set_send_socket(«udp:10.130.0.23:5070»);
>> $fs = «udp:10.130.0.23:5070»;
>> }
>> #$fs = «udp:10.130.0.23:5070»;
>> if (!t_relay()) {
>> sl_reply_error();
>> }
>>
>> route[REGISTRAR] {
>>
>>         if ($rd == "mydomain.ru" || $rd == "mydomain2.ru") {
>>
>>           set_send_socket("udp:10.130.0.23:5070");
>>
>>          }
>>
>> }
>>
>>
>> It works for requests from UserAgent to PBX. But INVITE from my pbx to
>> UserAgent goes only through udp:10.130.0.23:5070 ,  Kamailio realy it to
>> internet from udp:10.130.0.23:5070
>>
>> I get error in syslog:  (pv [pv_branch.c:62]: pv_get_branchx_helper():
>> error accessing branch [0])
>>
>> I tried set_send_socket(«udp:10.130.0.23:5070»); and $fs =
>> «udp:10.130.0.23:5070»;
>>
>> Why I can`t relay outgoing requests to internet through another socket?
>>
>>
>> --
>>
>> Best regards,
>> Alex
>>
>> __________________________________________________________
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>>
> __________________________________________________________
> Kamailio - Users Mailing List - Non Commercial Discussions
>   * sr-users at lists.kamailio.org
> Important: keep the mailing list in the recipients, do not reply only to
> the sender!
> Edit mailing list options or unsubscribe:
>   * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>


-- 
С уважением,
Якимкин Алексей
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