[SR-Users] IP Address used for outgoing Packets?

[Diego Nadares]

Hi!

Did you try with mhomed=1 ?

Cheers,

Diego

2017-05-13 21:40 GMT-03:00 Keith Whyte <keith at rhizomatica.org>:

> Hi All,
>
> tl;dr - Kamailio is sending traffic to the Voip server with a source IP
> of the private (vpn) interface.
>
> For some weeks, I've been experimenting with Kamailio v 4.4.4, trying
> different options, including running (or not) a vpn interface on
> the kamailio server with and without NAT/rtpproxy. I have not as yet
> fully "installed" kamailo with database etc, I have just been playing
> with the config file, mostly running with -D
>
> For most of the configurations I tried, I was routing SIP to/from the
> VPN via another box on the network, and I tried to get RTP streams
> running without using rtpproxy, sometimes it worked, but I have two many
> double/triple NAT problems with some of the freeswitch nodes.
>
> Now I have decided to run a VPN interface directly on the kamailio
> server, for simplicity.
>
> Essentially what I want to do is have kamailio/rtpproxy bridge between
> the VPN and the VOIP provider, so it should be a pretty standard NAT
> config.
>
> My setup looks like this:
>
> VPN CLUSTER of Freeswitch nodes <-10.23.0.1-> KAMAILIO Server
> <-192.168.1.1 - gateway - PUBLIC_IP-> Voip Provider
>
> The Kamailio Server has two interfaces, one VPN interface and one facing
> the Public Internet.
> It is behind a firewall, and so has a private IP address assigned on the
> interface, but the is  dedicated public IP that forwards all relevant
> ports, and traffic seen on the public side originates from this address.
>
> I have two listen directives,
>
> listen=udp:192.168.1.1:5060 advertise PUBLIC_IP:5060
>
> listen=udp:10.23.0.1:5060
>
> I expected Kamailio to receive SIP INVITE on the 10.23.0.1 address and
> forward it to the voip provider via the default route (the 192.168.1.1
> address), but it is sending the packet out to the voip provider with a
> source address of 10.23.0.1 !!
>
> Can anyone tell me how I can configure this? I cannot find anything
> obvious in the manual.
>
> Thanks!
>
>
>
>
>
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