Re: Recursive DNS w/ GCI

Hello Scott,

Your problem may be with you forwarding your DNS requests to DNS servers not
on the GCI network. Namely the ACS one in this case. A lot of ISPs turn
off recursion , forwarding, and glue-fetching for requests that don't
originate on thier networks. This is usually done in the process of securing
a DNS server from poisoning attacks and to reduce load.

Hope that helps.

- Beau

On Monday 25 October 2004 01:03, Scott Johnson wrote:
> Is anyone running their own recursive/caching DNS server on a GCI
> cable modem? I do and everything was working fine until I switched
> over to the new DOCSIS platform a few weeks ago (from the COM21
> system). My DNS server is BIND 9.2.1 on a RH 9.0 box.... everything
> was working fine until the modem swap out. Now, I can NOT get BIND to
> communicate with any DNS server past the RCA modem. If I configure a
> non-BIND DNS server on my intranet, it gets a successful reply back
> about 50% of the time. I forward recursive DNS requests to both GCI &
> ACS' servers, but I don't notice any different between the two - still
> about 50% of my requests go unanswered.
>
> Ideas on where to start troubleshooting this?
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Received on Tue Oct 26 12:29:10 2004