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WAF

Cloudflare WAF runs on Cloudflare’s global network and sits in front of web applications to stop a wide range of attacks in real time using powerful rule sets, advanced rate limiting, exposed credential checks, uploaded content scanning, and other security measures.

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Protect your web applications with Cloudflare WAF

Gartner Customers' Choice for WAF
 

Cloudflare’s WAF solution has been recognized as a customer favorite in the 2021 Gartner Peer Insights Report for WAFs.

​Fast and precise protection
 

New rules are activated in seconds for instant protection, unlike other WAFs that need 45 minutes or more to provide protection. The network ensures 10 times faster protection than competitors.

Simple implementation and easy management
 

Comprehensive WAF protection is activated in just a few clicks. Nothing to implement. No lengthy training or professional services required.

Stopping modern application security threats

In 2021, more than 20,000 vulnerabilities were exploited, the highest number ever recorded.

Billions of stolen credentials are available on the dark web, and are being used for credential stuffing to carry out account takeovers.

 

Attackers are targeting servers, the main IT asset and the target of 50% of attacks.

Companies need 16 days to implement patches, a time in which attackers can exploit vulnerabilities.
 

Advantages of Cloudflare WAF

Cloudflare’s Web Application Firewall (WAF) is the cornerstone of Cloudflare’s advanced application security portfolio. It ensures application security and productivity.

Comprehensive application security from our global network, with a single integrated rules engine that provides effective and consistent security.

Machine learning protections, trained with our unmatched threat visibility, detect evasions and attacks.

Our security analytics provide unparalleled insights into attacks that no other WAF can offer.

Faster, easier security deployments accelerate mitigation and time to value.

Zero-day protections are rapidly deployed to enable immediate virtual patching. These managed rules are deployed globally in seconds.

Leaders in application security.

Benefits of Cloudflare WAF

Global Threat Intelligence

Cloudflare’s global network processes 81 million HTTP requests per second at peak times, providing unparalleled protection against the latest attacks, including zero-day exploits.

Machine learning-based detection

Cloudflare’s global network processes 81 million HTTP requests per second at peak times, providing unparalleled protection against the latest attacks, including zero-day exploits.

Quick implementation and easy management

Customers can configure the WAF with just a few clicks, and our WAF integrates with the rest of our application security for complete coverage. No training or professional services are required.

Custom and managed rule sets

In addition to OWASP rules, Cloudflare managed rules offer fast zero-day protection, and custom rule sets allow organizations to tailor their WAF to implement organization-specific policies.

WAF with layered defense

  • Cloudflare Managed Rules provide protection against zero-day vulnerabilities.
     

  • OWASP Core Rules block the top 10 attack techniques.
     

  • Custom Rule Sets provide tailored protection to block any attack.
     

  • Exposed Credential Checks monitor and block the use of stolen/exposed credentials for account takeover.
     

  • Sensitive Data Detection alerts on responses containing sensitive data.
     

  • Advanced Rate Limiting prevents abuse attempts, DDoS and brute force attacks alongside API-centric controls.
     

  • Flexible Response Options allow for blocking, logging, rate limiting, or verification testing.

Cloudflare's top-tier application security solutions

Cloudflare WAF is the cornerstone of our advanced application security portfolio. It keeps apps and APIs secure and productive, prevents DDoS attacks, keeps bots at bay, detects malicious payloads and anomalies, all while monitoring for browser supply chain attacks.

CASE STUDY
 

Private equity firm ensures rapid international growth, improving performance and security of fintech services

A privately held company headquartered in Beijing, China, with offices in São Paulo, Brazil, is expanding its high-quality gaming and financial services platforms to overseas clients. To support a broader customer demographic and foster continued growth in the Middle East, Europe, and Asia, in addition to its core Latin markets, the organization relies on an internationalized workforce: 80% of its staff speak more than one language and 40% are native speakers of its target markets.

Main challenges

  • Accelerating growth: in the e-commerce and international financial services sectors.
     

  • Eliminating fraud: The organization's primary goal is to eliminate online fraud, protecting its databases and preventing customer accounts from being compromised by criminal activities.
     

  • Digital transformation and scalability: To manage its rapid growth, the company relies on Cloudflare's cloud platform, which allows them to ensure security, regulatory compliance, and a high-quality customer experience, even under challenging network conditions.

Solution

  • Web Application Firewall (WAF), DDoS Protection, Rate Limiting, and Bot Management: These tools enabled them to protect their applications and websites against attacks like Layer 7 Challenge Collapsar (CC) attacks, which often overload databases.
     

  • Cloud Email Security: They implemented solutions that protect against phishing, malware, and business email compromise (BEC), intercepting thousands of malicious emails per month.
     

  • Improved Performance and Scalability with Cloudflare Workers and R2: By using Cloudflare’s global network and development platform, they were able to optimize content delivery and reduce costs, especially in regions with limited connectivity.

Results

  • Challenge Collapsar (CC) blocked complex layer 7 attacks are highly effective, safeguarding sensitive data and securing customer transactions.
     

  • Improved scalability and performance across international markets, ensuring a consistent, high-quality user experience for all.
     

  • Accelerated regulatory compliance efforts.
     

  • Reduced operational costs and increased efficiency through automated threat detection and mitigation.
     

  • Enabled a secure, work-from-anywhere infrastructure for a growing global workforce.

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