[177526] in North American Network Operators' Group

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Re: AT&T uVerse blocking SIP?

daemon@ATHENA.MIT.EDU (Jared Mauch)
Mon Jan 26 22:24:48 2015

X-Original-To: nanog@nanog.org
From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <CA+RYCQ98d+hgqd96m-bH_f1M25ekrKxm=D1S3ES-7pTNCUwbMQ@mail.gmail.com>
Date: Mon, 26 Jan 2015 22:22:56 -0500
To: Brad Bendy <bb@1stclasshosting.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org

Yes.  If you move to another port, e.g.: 5061 it works fine.

If you=E2=80=99re running on a Linux based system, you can do this:

/sbin/iptables -A PREROUTING -t nat -i eth1 -p udp --dport 5061 -j =
REDIRECT --to-port 5060

on the host to remap 5061 -> 5060 with no application change.

- Jared

> On Jan 26, 2015, at 4:26 PM, Brad Bendy <bb@1stclasshosting.com> =
wrote:
>=20
> Has anyone seen issues where a end user on uVerse trying to connect to
> either another provider or AT&T non uVerse (in this case DIA) is =
having SIP
> blocked? SIP leaving the uVerse network going to another uVerse DSL =
account
> is fine, but it appears soon as it leave the uVerse network all SIP =
traffic
> is blocked?
>=20
> It appears others have seen this problem, some say it's a modem issue, =
some
> say they are truly blocking it. Ive yet to call uVerse support yet as =
im
> guessing ill get no where.
>=20
> Thanks for any insight on this.
>=20
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