nanog mailing list archives

Re: Reporting DDOS reflection attacks


From: manning bill <bmanning () isi edu>
Date: Sun, 9 Nov 2014 11:52:58 -0800



On 9November2014Sunday, at 11:40, Doug Barton <dougb () dougbarton us> wrote:

On 11/8/14 6:33 PM, Roland Dobbins wrote:
this is incorrect and harmful, and should be removed:

    iii.    Consider dropping any DNS reply packets which are larger
than 512 Bytes – these are commonly found in DNS DoS Amplification attacks.

This *breaks the Internet*.  Don't do it.

+1

actually, if you think this will help you, by all means drop any DNS packets which are gt. 512bytes, not UDP, and not 
IPv4.

/bill


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