Incident Report - DDoS Attack

This past Monday, we experienced a major volumetric DDoS attack which caused significant downtime for our site and the sites of our customers. The attack included sustained traffic of up to 25gb/s and about 50 million packets per second sent to our servers. I am very sorry that this outage happened and had such sustained and wide reaching effects. We have assembled here what we know about the attack, what we did to mitigate it, and the steps we are taking to mitigate similar attacks. The following post-mortem is a collaboration from the entire DNSimple team.

more here........http://blog.dnsimple.com/2014/12/incident-report-ddos/