Under DDoS Attack? We Can Protect You in an Emergency

Cloudflare mitigates DDoS attacks, including those that target UDP and ICMP protocols, SYN/ACK, DNS and NTP amplification and Layer 7 attacks. Our global network has defended against sustained attacks over 400Gbps. If you're under DDoS attack, we can get your site back online within minutes.

Activate DDoS Protection

Get These Benifits Within a Few Minutes

  • Protection against DDoS attacks of all forms and sizes
  • 24/7/365 support backed by our team of security experts
  • Predictable, flat pricing regardless of attack size or duration
  • Use of Anycast for both DNS and TCP
  • All DDoS attacks absorbed before they overload your server
  • Mitigates both app-based and volumetric attacks
  • Automatic learning from network effect of 2M+ websites
  • Uptime guarantee
  • lobal, distributed network with 86 points of presence
  • Legitimate traffic can still access your content

In The News

Firm is accused of sending spam and fight jams the Internet.

“It is a real number [300Gbps]. It is the largest publicly announced DDoS attack in the history of the Internet,” said Mr. Gilmore, chief architect of Akamai Technologies.”

Record-breaking DDoS attack in Europe hits 400Gbps.

“Cloudflare’s CEO Matthew Prince tweeted: ‘A very big NTP reflection attack is hitting us right now. Someone’s got a big new cannon.’”

How It Works

As web attacks get bigger, our network offers high capacity to mitigate the attack and protect your website from DDoS attacks, even ones exceeding hundreds of Gbps. Cloudflare has built a best-in-class, global infrastructure from the ground up with no legacy software or hardware.

With Cloudflare, all attack traffic that would otherwise directly hit your server is automatically routed through Cloudflare’s global network of data centers. Once attack traffic is shifted, we are able to leverage the significant global capacity of our network and infrastructure to absorb the floods of attack traffic at our network edge.

Our global infrastructure has mitigated two of the largest DDoS attacks recorded in public history: a 300Gbps DDoS attack flooding spam fighter Spamhaus in March 2013, and a record-breaking 400Gbps attack in February 2014. Additionally, Cloudflare learns from attacks against any individual customer to protect all customers on our network. This automatic learning means your website is protected against the latest threats.

When the online social networking portal, Meetup, became a target of the increasingly common NTP-based DDoS attacks, its web and mobile site experienced intermittent outages over several days. The attack caused the longest downtime in the company’s 12 years of operation. Subsequently, Meetup requested help from Cloudflare, which successfully mitigated the attack and kept the site online.

Setting Up Cloudflare Is Easy

Set up a domain in less than 5 minutes. Keep your hosting provider. No code changes required.

Cloudflare Pricing

Everyone’s Internet application can benefit from using Cloudflare.
Pick a plan that fits your needs.

Free $ 0 /mo per website
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For personal websites, blogs, and anyone who wants to explore Cloudflare.

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The Free Plan includes all of these features:
  • Limited DDoS protection
  • Global CDN
  • Shared SSL certificate
  • 3 page rules
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PRO $ 20 /mo per website
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For professional websites, blogs, and portfolios requiring basic security and performance.

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The Pro Plan includes all of these features:
  • Basic web application firewall (WAF) with Cloudflare rulesets
  • Image optimizations with Polish™
  • Mobile optimizations with Mirage™
  • I'm Under Attack™ mode
  • 20 page rules
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BUSINESS $ 200 /mo per website
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For small eCommerce websites and businesses requiring advanced security and performance, PCI compliance, and prioritized support.

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The Business Plan includes all of these features:
  • Advanced DDoS protection
  • Advanced web application firewall (WAF) with 25 custom rulesets
  • Custom SSL certificate upload
  • PCI compliance with TLS 1.2 only mode and WAF
  • Accelerate delivery of dynamic content with Railgun™
  • Prioritized support
  • 50 page rules
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Enterprise Sign up for free trial
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For companies requiring enterprise-grade security and performance, 24/7/365 emergency support, and guaranteed uptime across one or more Internet assets.

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The Enterprise Plan includes all of these features:
  • 24/7/365 enterprise-grade phone and email support
  • 100% uptime guarantee with 25x reimbursement SLA
  • Advanced DDoS protection with prioritized IP ranges
  • Advanced web application firewall (WAF) with unlimited custom rulesets
  • Multiuser role-based account access
  • Multiple custom SSL certificate uploads
  • Access to raw logs
  • Dedicated solution and customer success engineers
  • Access to China CDN points of presence
  • 100 page rules
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Free

$ 0 / mo
 
For personal websites, blogs, and anyone who wants to explore Cloudflare.

Pro

$ 20 / mo
per domain
For professional websites, blogs, and portfolios requiring basic security and performance.
MOST POPULAR

Business

$ 200 / mo
per domain
For small eCommerce websites and businesses requiring advanced security and performance, PCI compliance, and prioritized support.

Enterprise

Free Trial
 
For companies requiring enterprise-grade security and performance, 24/7/365 emergency support, and guaranteed uptime across one or more Internet assets.