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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