DDoS Protection for Web Applications

Robust security with fast performance

Get increased uptime and speed for your websites and other HTTP/s applications with Cloudflare’s automated, always-on, and unmetered DDoS protection.

The Cloudflare Difference

Robust

With over 67 Tbps Tbps of network capacity and a global network that’s constantly learning from the approximately 25 million Internet properties on it, Cloudflare protects you against the largest and most sophisticated attacks.

Easy

Easily onboard your web applications within minutes from the dashboard or the API. Adding other Cloudflare security, performance, and reliability functionality is as easy as flipping a switch.

Cost-effective

All Cloudflare plans offer unlimited and unmetered mitigation of DDoS attacks. Customers are not charged for attack traffic ever, period. There’s no penalty for spikes due to attack traffic, requiring no chargeback by the customer.

How it Works

With a simple change to your DNS settings, you can onboard your website to Cloudflare within minutes. Cloudflare’s globally distributed anycast network routes visitor requests to the nearest Cloudflare data center.

  • When Cloudflare’s edge data centers receive a request, they scan it to see if the visitor appears to be a threat, using criteria such as HTTP headers, user agent, query string, path, host, HTTP method, HTTP version, TLS cipher version, and request rate. We also look at HTTP response metrics such as error codes returned by customers’ origin servers.

  • Our global and local DoS mitigation systems work in concert to protect new and existing threats of any size or kind against your website.

  • Any resources that are already cached are served from Cloudflare’s data centers directly. Other client request traffic is sent to your origin server over Cloudflare’s high-performance network.

IDC

Cloudflare was named a “Leader” according to the 2019 ‘IDC MarketScape: Worldwide DDoS Prevention Solutions'1

Gartner

Cloudflare has received the most number of ‘High’ ratings as compared to the other 6 DDoS vendors across 23 assessment criteria in Gartner’s 2020 ‘Solution Comparison for DDoS Cloud Scrubbing Centers’ report2

Forrester

Cloudflare has been recognized as a “Leader” in ‘The Forrester Wave: DDoS Mitigation Solutions, Q1, 2021’ report3

AUTOMATED, UNMETERED, ALWAYS-ON DDOS PROTECTION

Fast mitigation

Cloudflare centralized and decentralized mitigation systems work in concert to identify and mitigate most DDoS attacks in under 10 seconds (3 seconds on average). Preconfigured static rules are deployed in less than 1 second.

See what we see

Cloudflare’s built-in analytics give you deeper insights into your traffic patterns, threats observed (and blocked), and much more right from the dashboard or via the Cloudflare GraphQL API. Cloudflare logs can also be integrated with third-party SIEMs.

Security with fast performance

Cloudflare’s DDoS protection is designed to integrate and operate seamlessly with other security and performance products including Web Application Firewall, Bot Management, Load Balancer, CDN, and more.


Trusted by approximately 25 million Internet properties

1 Gartner “Solution Comparison for DDoS Cloud Scrubbing Centers,” Thomas Lintemuth, Patrick Hevesi, Sushil Aryal, 16 April 2020. Gartner subscribers access the report at: https://www.gartner.com/document/3983636 2 IDC MarketScape: Worldwide DDoS Prevention Solutions 2019 Vendor Assessment, by Martha Vazquez, March 2019, IDC #US43699318. Access the report at https://www.cloudflare.com/lp/idc-ddos-marketscape/ 3 Forrester Wave™: DDoS Mitigation Solutions, Q4 2017, Forrester Research, Inc., December 7, 2017. Access the report at https://www.cloudflare.com/forrester-wave-ddos-mitigation-2017/