[SR-Users] kamailio.cfg : behind the NAT (listen and advertise) understanding

[David Villasmil]

why do you want the softphones (which are on THE SAME NETWORK) to register
via Kamailio's public IP?

what you suggest is exactly what you should do:

listen=udp: IPv4_private: 5060 advertise  IPv4_public : 5060
listen=udp: IPv4_private: 5066

Just add a listen on a different port and have the LOCAL clients register
via that port.
And have the clients on the public network to register via the public ip.


Regards,

David Villasmil
email: david.villasmil.work at gmail.com
phone: +34669448337


On Fri, Mar 4, 2022 at 3:04 PM Youssef Boujraf <yboujraf at gmail.com> wrote:

> Hi Dear
>
> I am trying to understand how "listen" and "advertise" work for sip
> signaling purpose ( corebooks : listen
> <http://www.kamailio.org/wiki/cookbooks/5.4.x/core#listen> and advertise )
>
> Flow : kamailio behind NAT using softphones on private and public networks.
>
> - kamailio :
>
> Network :
>
> IPv4_private 192.168.1.6 / IPv4_public
>
> kamailio.cfg :
>
> listen=udp: IPv4_private: 5060 advertise  IPv4_public : 5060
>
> - uac (softphone) :
>
> zoiper, microsip, cisco spa508g
>
> USE CASE :
>
> I 'd like to force all softphone on the same local network to reach
> kamailio through a public ip address.
>
> ??? QUESTION : Do I need to REGISTER on IPv4_private address of Kamailio
> OR REGISTER on IPv4_public address of kamailio or DEFINE another "listen"
> with another PORT WITHOUT "advertise"  for softphone on same kamailio
> network ?
>
> listen=udp: IPv4_private: 5060 advertise  IPv4_public : 5060
> listen=udp: IPv4_private: 5066
>
>
> Do I need to use "kamctl ps" to verify which interface is listening on
> port ?
>
> Thanks in advance
>
> Best Regards,
>
> Youssef BOUJRAF
> Email: yboujraf at gmail.com
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