[nsd-users] Amplification attack how to stop it

Peter Larsen mail at czar.dk
Thu Dec 3 18:33:23 CET 2015


https://www.nlnetlabs.nl/blog/2012/10/11/nsd-ratelimit/ <https://www.nlnetlabs.nl/blog/2012/10/11/nsd-ratelimit/>


> On Dec 3, 2015, at 5:58 PM, Bas van den Dikkenberg <bas at Dikkenberg.net> wrote:
> 
> Hi all,
> 
> We have a big  problem  all 3 of our dns servers are under Amplification attack
> As soon as we start nsd we send out 50 mbit to the internet.
> Any ideas how can stop this .
> 
> 
> We run NSD version 4.1.2 (most recent in ondrej nlnetlabs ppa)
> 
> My nsd.conf can be found here: http://pastebin.com/kAHcRiVf <http://pastebin.com/kAHcRiVf>
> 
> suggestions are greatly appreciated
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