[177561] in North American Network Operators' Group
Re: AT&T uVerse blocking SIP?
daemon@ATHENA.MIT.EDU (Brad Bendy)
Tue Jan 27 09:49:29 2015
X-Original-To: nanog@nanog.org
In-Reply-To: <CAL9jLaZqVnKNo1T7xUEqSQ-oCjyf+Md7sgwT904V9UL=MFQajA@mail.gmail.com>
Date: Tue, 27 Jan 2015 07:47:29 -0700
From: Brad Bendy <bb@1stclasshosting.com>
To: Christopher Morrow <morrowc.lists@gmail.com>
Cc: nanog list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
They are saying this CPE has no ALG in it, but they can enable DMZ, which
acourse made zero difference.
What I do find funny is they escalated the problem to Tier-2 and wanted to
enroll the customer in premium tech support for $15 a month, because the
Internet signal is strong and is not causing the problem, sigh.
Back to trying port 5061 it appears!
On Mon, Jan 26, 2015 at 8:44 PM, Christopher Morrow <morrowc.lists@gmail.co=
m
> wrote:
> 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
> 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=
:
> >>
> >> 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 havin=
g
> 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?
> >>
> >> 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.
> >>
> >> Thanks for any insight on this.
> >>
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