So I could do something like this:

listen=192.168.2.9:5070 advertise 20.30.40.50:5070
listen=192.168.2.9:5050

However when I do an invite to 192.168.2.32, would Kamailio choose 5050 or 5070?
Same when inviting to 40.40.40.40

If I were to listen to another local IP, then the routing table in Linux could perhaps dictate which connection to use.


-------------------- Med Liberalistiske Hilsner ----------------------
   Civilingeniør, Kjeld Flarup - Mit sind er mere åbent end min tegnebog
   Sofienlundvej 6B, 7560 Hjerm, Tlf: 40 29 41 49
   Den ikke akademiske hjemmeside for liberalismen - www.liberalismen.dk

On 12/5/18 6:10 PM, Sergiu Pojoga wrote:
For whatever reason my initial impression was if it was possible for external devices to connect without port forwarding...

I stand corrected.


On Wed, Dec 5, 2018 at 11:30 AM Daniel-Constantin Mierla <miconda@gmail.com> wrote:

It is not about an external network interface, but external traffic/devices. The NAT in this case is a port forwarding firewall, like Amazon or Google cloud, where you have a local address on server and the firewall is forwarding by port all traffic from an assigned public address.

Such scenario is quite common in enterprise environment, the devices on local network connect by private IP, and the external devices connect to the firewall ip and this one does port forwarding.

Cheers,
Daniel

On 05.12.18 16:56, Sergiu Pojoga wrote:
Slightly confused here... didn't he say that Kamailio and PBX are behind NAT? If so, what external interface are we talking about?

On Wed, Dec 5, 2018 at 9:18 AM Daniel-Constantin Mierla <miconda@gmail.com> wrote:
Hello,

you do not need a second kamailio, the same instance can listen on
multiple sockets. You can also use a single ip, just listen on one port
for traffic from local network and on another port for external traffic
(this socket with advertise address).

If the router cannot handle dns query based on local traffic, most
devices support so called outbound proxy address, you can set that to
the sip server address with ip.

Cheers,
Daniel

On 05.12.18 13:02, Kjeld Flarup wrote:
> That might work, provided that the router can handle a local DNS.
>
> It would, however still require adding an extra Kamailio instance with
> another IP. Plus a branch of the invite to both local and public
> instance. Plus an extra location table.
>
> -------------------- Med Liberalistiske Hilsner ----------------------
>    Civilingeniør, Kjeld Flarup - Mit sind er mere åbent end min tegnebog
>    Sofienlundvej 6B, 7560 Hjerm, Tlf: 40 29 41 49
>    Den ikke akademiske hjemmeside for liberalismen - www.liberalismen.dk
>
> On 12/5/18 12:11 PM, Daniel Tryba wrote:
>> On Wed, Dec 05, 2018 at 09:40:38AM +0100, Kjeld Flarup wrote:
>>> Yes, the Phones may be on either local LAN (Wifi) and Internet via
>>> mobile
>>> data.
>> How about use different local address, 1 with an advertise for external
>> clients, 1 without. Have local DNS resolv to the 1 ip without advertise.
>>
>> _______________________________________________
>> Kamailio (SER) - Users Mailing List
>> sr-users@lists.kamailio.org
>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
> _______________________________________________
> Kamailio (SER) - Users Mailing List
> sr-users@lists.kamailio.org
> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio World Conference -- www.kamailioworld.com
Kamailio Advanced Training, Nov 12-14, 2018, in Berlin -- www.asipto.com


_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users@lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio World Conference -- www.kamailioworld.com
Kamailio Advanced Training, Nov 12-14, 2018, in Berlin -- www.asipto.com

_______________________________________________
Kamailio (SER) - Users Mailing List
sr-users@lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users