Hello there,
I am currently working on a linux kernel 2.6.26 box with linked to
multiple ISP (so one or more ethernet connections) and specific ones for
VoIP usage.
What i want is to restrict SIP rtp/rtcp to specific interfaces
(load-balance) and I can only use iptables rules kernel modules or hack
the kernel itself (for resource purposes).
My problem is that I have two different servers for sip rtp (port 5060)
and sip rtcp (random port 10k+).
So when the rtcp connection is established, it is not related/expected
to the rtp and I can't track it with iptables. (callback
ip_nat_sip_expected in net/ipv4/netfilter/nf_nat_sip.c is not called).
box ----- > rtp server xxx.xxx.xxx.1
\-----> rtcp server xxx.xxx.xxx.2
I am doing it wrong ?
Is there a kernel module that I missed ?
is this kind of trivia is dealt differently with more recent kernels ?
(maybe i can convince my boss to upgrade).
Regards.
(French IT dev here, so sorry if english is a bit awkward).
--
Alexandre Moore
http://alexandremoore.com
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