Site under load? Recognise, mitigate and prevent DDoS.

• Cloudflare DDoS Protection: Setup, Limits, Origin Lockdown

  Cloudflare DDoS protection covers layers 3 to 7 on every plan, free included. How to set it up, lock down your origin IP and use Under Attack mode well.

• DDoS Attack: What to Do in the First Hour (8 Steps)

  DDoS attack, what to do first: an 8-step response plan for the first hour, from calling your provider and edge rules to rate limits, evidence and reporting.

• Detect a DDoS Attack: Signs in Logs, Metrics and Traffic

  How to detect a DDoS attack with nginx logs, ss, iftop and CDN analytics: which numbers spike, the commands to run, and when load stops being normal.

• Types of DDoS Attacks: Volumetric, Protocol and Layer 7

  The main types of DDoS attacks explained: volumetric, protocol and layer 7 floods, how each is measured (bps, pps, rps), how to spot them and who can filter them.

Attack or just a traffic spike?

• DDoS or Traffic Spike? How to Tell Them Apart Fast
• Detect a DDoS Attack: Signs in Logs, Metrics and Traffic
• Types of DDoS Attacks: Volumetric, Protocol and Layer 7

Immediate steps and lasting protection.

• Cost of a DDoS Attack: How to Calculate Your Own
• Cloudflare DDoS Protection: Setup, Limits, Origin Lockdown
• DDoS Attack: What to Do in the First Hour (8 Steps)
• Rate Limiting: nginx limit_req, fail2ban, Cloudflare Rules
• Report a DDoS Attack: Police, CERTs and Your Provider

Why the domain can be the weakest link.

• Anycast DNS Explained: One IP, Many Locations
• DNS Amplification Attack: How It Works, How to Stop It
• DNS DDoS Attack: When Your Nameservers Go Down
• Secondary DNS: Set Up a Second Provider with TSIG

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