Re: 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.

Phil Mayers Tue, 16 Apr 2013 05:01:05 -0700

On 16/04/13 12:41, Kebba Foon wrote:

my server is not an open recursive server its only open to my clients
and these are not even from my country.


You're right, it's probably a spoofed-source DNS amplification attack.

If your DNS server isn't open (good to hear) you could consider justACLing it at your network border.


Alternatively, you could consider the RRL patches to bind.
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Re: 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.

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