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Lessons from Surviving a 300Gbps DDOS Attack
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Lessons from Surviving a 300Gbps Denial of Service Attack
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- 1 Lessons from Surviving a 300Gbps DDOS Attack
- 2 The Story 1. The nature of the attack 2. What we did to stop it 3. Practical steps to protect your own networks
- 3 March 18-21
- 4 What you don't need... 1. Botnets 2. A lot of people 3. Significant technical skill
- 5 Misconfigured DNS servers running without limits on what they respond to
- 6 Ingredients for the Spamhaus attack?
- 7 Attacker could do the math
- 8 Caused temporary regional disruptions
- 9 Worked with IXs and providers
- 10 "Next Hop Self" internal routing
- 11 Edge filtering of IPs/protocols with an understanding of our application
- 12 Four suggestions
- 13 Second, practice good protocol hygene...
- 14 Third, implement infrastructure ACLS...
- 15 Fourth, know your upstreams...
