Thus said Daniel Fussell on Fri, 17 Jan 2014 10:17:35 -0700:

> Recently someone started  using my DNS server for  a DNS amplification
> attack,  forcing  me to  disable  recursion  for queries  coming  from
> outside my network. It works well enough, but I'm now sending a denied
> packet to the victim  instead of a 4 kbyte TXT  record, where I'd like
> to send nothing at all.

When  you  solve  your  amplification problem  (seems  you've  at  least
whittled  it  down  some),  it  is also  recommended  to  separate  your
iterative server from your recursive server:

http://oreilly.com/catalog/dns4/chapter/ch11.html#10959

Specifically the section titled ``Split-Function Name Servers''

Andy
-- 
TAI64 timestamp: 4000000052da36c2



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