[164737] in North American Network Operators' Group
Re: Brighthouse issues
daemon@ATHENA.MIT.EDU (Jared Geiger)
Tue Jul 30 23:34:21 2013
In-Reply-To: <51F87E3D.6050109@utc.edu>
Date: Tue, 30 Jul 2013 20:33:57 -0700
From: Jared Geiger <jared@compuwizz.net>
To: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Tue, Jul 30, 2013 at 8:02 PM, Jeff Kell <jeff-kell@utc.edu> wrote:
> On 7/30/2013 10:55 PM, Jay Ashworth wrote:
> > ----- Original Message -----
> >> From: "Jared Geiger" <jared@compuwizz.net>
> >>
> >> We are seeing that all our customers in the Brighthouse Orlando, FL
> market
> >> that would make outbound connections on TCP port 3306 suddenly can't
> >> connect to us now. This happened suddenly mid day today.
> >>
>
> >> Speculation: are these residential class cablemodem customers? Carriers
> >> are prone to block uncommon ports on such modems at random.
>
> Yeah, 3306 is MySQL. Overly-paranoid firewall somewhere? DDoS
> mitigation collateral damage?
>
>
>
I routed around nlayer>TWC>Brighthouse to Cogent>XO>Brighthouse and problem
was resolved. So the first path has something wonky. The reverse path is
BHN>Level3>Inforelay>Me.
So my guess is there is something in nlayer or TWC 7843 that is
filtering/limiting it.
