DNS wierdness and cox communications

[Technomage Hawke]

yeah... could be just my connection..... in diverse places on cox (and
from what I see, also on qwest). someone suggested a possible routing
issue as well (more than likely the case).

one other possible thought, the root DNS servers may not be accepting
connections from jus "anybody".

ASU's DNS servers are actually located within the qwest ip space.

I have tried other DNS servers with variable results. I might have to
break out wireshark and see if I am getting connection resets on that
port. and run some tests with my clients over this week.

anyway, I don't have enough available info to call it as a cox or a
qwest specific issue.


On 8/10/08, James Mcphee <jmcphe at gmail.com> wrote:
> If you're experiencing issues, then set up a job to query Cox and Qwest's
> and whoever's DNS servers at the same time and log it.  See if you're seeing
> a trend.  It could just be your connection.
>
>
> On Sun, Aug 10, 2008 at 12:07 AM, Craig White <craigwhite at azapple.com>
> wrote:
> >
> > On Sat, 2008-08-09 at 23:39 -0700, Technomage Hawke wrote:
> > > Over the last few weeks, I have noticed an increasing number of
> > > customer calls about network outages. Now on the surface, this might
> > > not seem all that relevant, However, these issues are not just windows
> > > centric.
> > >
> > > I have discovered a pattern to the outage problems I have been
> > > troubleshooting. it seems that cox is filtering dns traffic to anyone
> > > outside their own ip space. any attempt to use a DNS root server or
> > > even the ASUdns servers results in many pages not being resolved. as
> > > soon as I set for the cox dns servers, all seems to work again.
> > >
> > > anyone else noticing this "filtering" on cox's part?
> > ----
> > no - it makes no sense, you can always test your theory out at any time
> > you want by running commands such as dig and host and if you really
> > care, you could run your own caching dns server which would obviously
> > need to access other dns servers to be worthwhile.
> >
> > Craig
> >
> >
> >
> >
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>
> --
> James McPhee
> jmcphe at gmail.com
>
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