[VoiceOps] What does an ALG actually do?

[Moises Silva]

On Sat, Mar 2, 2013 at 5:17 PM, Alex Balashov <abalashov at evaristesys.com>wrote:

> Correct me if I'm wrong, but last time I looked, Linux's netfilter kernel
> module for SIP, ip_conntrack_sip, still is ignorant of SDP entirely.
>

I just checked the latest stable tree (git://
git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git)

It does parse the SDP finding session/media description rtp/rtcp ports and
it does mangle the UDP packet. See net/netfilter/nf_nat_sip.c, function
process_sdp()

Cheers,

*Moises Silva
**Manager, Software Engineering***

msilva at sangoma.com

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