[dns-operations] solutions for DDoS mitigation of DNS

Stephane Bortzmeyer bortzmeyer at nic.fr
Thu Apr 2 07:19:19 UTC 2020

On Thu, Apr 02, 2020 at 11:51:05AM +0800,
 Tessa Plum <tessa at plum.ovh> wrote 
 a message of 37 lines which said:

> We were under some attack like UDP flood to the authority servers,

DNS or another type?

> The traffic size was about 20Gbps

Note that for DNS traffic, the useful metric is often
packets-per-second, not-bytes-per second. In most cases, that's what
kills the server.

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