On Tue, Jul 30, 2013 at 8:02 PM, Jeff Kell <jeff-k...@utc.edu> wrote:
> On 7/30/2013 10:55 PM, Jay Ashworth wrote: > > ----- Original Message ----- > >> From: "Jared Geiger" <ja...@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.
