[Outages-discussion] Fwd: AT&T uVerse blocking SIP

[Jay Ashworth]

Forwarded from NANOG to Outages-D and VoiceOps; apologies to those who see
this twice. (Or three times. :-)

----- Forwarded Message -----
> From: "Jared Mauch" <jared at puck.nether.net>
> To: "Brad Bendy" <bb at 1stclasshosting.com>
> Cc: nanog at nanog.org
> Sent: Monday, January 26, 2015 10:22:56 PM
> Subject: Re: AT&T uVerse blocking SIP?
> Yes. If you move to another port, e.g.: 5061 it works fine.
> 
> If you’re 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 at 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
> > 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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-- 
Jay R. Ashworth                  Baylink                       jra at baylink.com
Designer                     The Things I Think                       RFC 2100
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