[Freeswitch-users] SIP on all interfaces

[Antony Stone]

On Wednesday 12 January 2022 at 12:28:57, ilink wrote:

> Freeswitch listens on the private IP address:
> 
> netstat -na | grep :5080
> tcp        0      0 10.210.32.12:5080       0.0.0.0:*               LISTEN

> I only have this 10.210.32.12 interface but the IP packet arrives with the
> public IP address from the load balancer.

> No I try to configure something in freeswitch to listen on 0.0.0.0 instead
> of the the private IP address. If this is not working, I may need to try
> Kamailio (or similar) in front of the freeswitch, that listens on 0.0.0.0
> 
> Any advice/guidance?

Changing FreeSwich to listen on 0.0.0.0 will not make any difference, since you 
do not *have* any interface with the public IP address you say the packets are 
addressed to, therefore FreeSwitch still won't recognise packets sent to that 
address as being for it to process.

What you need to do is apply a Destination NAT firewall rule on incoming 
packets so that anything which arrives going to 198.51.100.42 (or whatever 
your public IP address is) get redirected to 10.210.32.12 instead.

This does sound like a bizarre networking arrangement for Google to give 
people, though.


Antony.

-- 
What do you get when you cross a joke with a rhetorical question?

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