I'm having thousands of queries a domain isc.org and this increases my cpu percentage to 100%. That may be happening and how I can control this? is an attack? attachment of the log I made an update to version 9.9.2-P2 as recommended but still continuous problems.

Barry Margolin barmar at alum.mit.edu
Tue Apr 16 09:27:48 UTC 2013


In article <mailman.130.1366101804.20661.bind-users at lists.isc.org>,
 Matus UHLAR - fantomas <uhlar at fantomas.sk> wrote:

> they apparently expect your nameserver to provide resursive DNS service for
> your company while it may not be intended for that use...  some customers
> (well, not only customers...) do not understand the difference between
> authoritative and recursive DNS service and may try to use servers for
> purpose not intended.  Some may also complain if the service does not work
> properly

If they were using his server as a resolver, wouldn't he see queries for 
lots of random hostnames (including popular domains like www.google.com, 
www.yahoo.com, etc.), not just isc.org?

-- 
Barry Margolin
Arlington, MA


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