On 09.02.2014 04:19, James Pifer wrote:
> I'm having problems where my upstream bandwidth is being saturated.
> I've
> narrowed it down to a DNS issue of some type. If I stop the named
> service then my bandwidth drops to "normal" according to my untangle
> firewall.
Your dns server may be used in a reflection/amplification attack, is it
an open resolver?
Read e.g.
http://www.mill-yard.com/2013/07/centos-bind-blocking-dns-reflection-or-amplification-ddos-attacks-using-recursive-dns-lookups/
--
Sent from the Delta quadrant using Borg technology!
Nux!
www.nux.ro
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