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

[Youssef Boujraf]

Question :

If kamailio is behind a double NAT setup

Internet - (Model-router : NAT 1) - (router - NAT2) - kamailio

Could I use this settings ?

- For public softphone :

listen=udp: IPv4_private: 5060 advertise  IPv4_public : 5060

Domain :  IPv4_public:5060

- For private softphone on same vlan as kamailio

listen=udp: IPv4_private:5066

Domain :  IPv4_private:5066

Best Regards,

Youssef BOUJRAF
Email: yboujraf at gmail.com


On Sat, Mar 5, 2022 at 1:23 AM Youssef Boujraf <yboujraf at gmail.com> wrote:

> Dear,
>
> Then;
>
> - For public softphone :
>
> listen=udp: IPv4_private: 5060 advertise  IPv4_public : 5060
>
> Domain :  IPv4_public:5060
>
> - For private softphone on same vlan as kamailio
>
> listen=udp: IPv4_private:5066
>
> Domain :  IPv4_private:5066
>
>
>
> Best Regards,
>
> Youssef BOUJRAF
> Email: yboujraf at gmail.com
>
>
> On Fri, Mar 4, 2022 at 3:00 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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