[177528] in North American Network Operators' Group
Re: AT&T uVerse blocking SIP?
daemon@ATHENA.MIT.EDU (Christopher Morrow)
Mon Jan 26 22:44:41 2015
X-Original-To: nanog@nanog.org
In-Reply-To: <3291F28A-7010-46B5-955E-F2AFFDCD688F@puck.nether.net>
Date: Mon, 26 Jan 2015 22:44:33 -0500
From: Christopher Morrow <morrowc.lists@gmail.com>
To: Jared Mauch <jared@puck.nether.net>
Cc: nanog list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
I think this is due to the CPE using a particular ALG ... (from
recollection having never been a UVerse customer, but having sat
through a long, long, long set of discussions about the
merits/demerits of sip blocking)
On Mon, Jan 26, 2015 at 10:22 PM, Jared Mauch <jared@puck.nether.net> wrote=
:
> 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 REDIRE=
CT --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:
>>
>> 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 acco=
unt
>> is fine, but it appears soon as it leave the uVerse network all SIP traf=
fic
>> is blocked?
>>
>> It appears others have seen this problem, some say it's a modem issue, s=
ome
>> say they are truly blocking it. Ive yet to call uVerse support yet as im
>> guessing ill get no where.
>>
>> Thanks for any insight on this.
>>
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