[asterisk-users] Why is this happening?

[Matt]

Andrew,
I totally buy YOUR explination and that is what I think is happening..
the NAT box on the far end (not ours) is changing the port.

My question is... if both machiens are set to listen on 4569, will the
fact that that router is mangeling the port cause any issues?

---------- Forwarded message ----------
From: Andrew Kohlsmith <akohlsmith-asterisk at benshaw.com>
Date: Oct 16, 2006 4:54 PM
Subject: Re: [asterisk-users] Why is this happening?
To: asterisk-users at lists.digium.com


On Monday 16 October 2006 16:15, Matt wrote:
> Thanks for the answer, but I don't buy it.  There are currently 0

Whether you buy it or not is irrelevant.  That is the port that this asterisk
box is seeing the other one up on.  It is seeing it that way (most likely)
due to NAT between the two boxes.  i.e. the far end box is on port 4569/udp
but it's being natted to 1207/udp "on the outside".

I see this all the time in both my SIP and IAX2 registrations, although the
port numbers are generally NATted much higher.  I only use Linux NAT though,
so others could be acting quite differently.

-A.
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