How large of a DDoS attack can Cloudflare handle?

Cloudflare's DDoS protection is effective for any attack size and any type of attack (Layer3/4, Layer 7 or DNS). We have no attack cap size and do not charge overage fees. 

Attack size range from 10 gigabytes per second (Gbps) to over 1 terabyte per second (Tbps). However, we have seen larger attacks. Read more at Famous DDoS Attacks.

In addition, you can read about various case studies:

Cloudflare is designed to mitigate DDoS attacks in a variety of ways. See Protect Against DDoS Attack for a detailed explanation.

Related resources:

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