[Semi-OT] W2k Server DNS cache corruption

James Raftery james-bind-users at now.ie
Thu Jun 14 09:24:54 UTC 2001


On Wed, Jun 13, 2001 at 09:23:19AM -0400, Duncan Hill wrote:
> Our Win2k DNS will randomly corrupt its .com cache.  Our Linux and NT4
> systems do not do this at all.
> A clearing of the cache fixes the prblem.. until it appears again.  Has
> anyone seen this on their 2k or otherwise server, and know the solution?

Yup - it happens quite a bit. There are some very stupid/malicious DNS
operators out there.

Do you have "Secure the cache against pollution" enabled? (Why, oh why,
is this an *option*? When is accepting poison ever desirable?)

http://www.microsoft.com/windows2000/en/server/help/sag_DNS_imp_TuningAdvancedParams.htm

james
-- 
James Raftery (JBR54)
  "It's somewhere in the Red Hat district"  --  A network engineer's
   freudian slip when talking about Amsterdam's nightlife at RIPE 38.


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