Web Application Firewall

Modern protections for modern applications

Enterprises rely on applications and APIs for growth--and with our world-class web application firewall, expanding attack surfaces and novel attacks never get in the way.

Our powerful web application firewall is integrated with the rest of our leading cloud-delivered application security portfolio.

Cloudflare is a leader in the 2022 Gartner® Magic Quadrant™ for Web Application and API Protection (WAAP) and in the Forrester Wave™: Web Application Firewalls, Q3 2022 report.

We stop modern application security threats

2021 saw more than 20K vulnerabilities to exploit - the greatest number of vulns on record.

There are more than 5 billion stolen credentials on the dark web to fuel credential stuffing that leads to account takeover.

Attackers have web servers in the crosshairs as they are the top IT asset targeted - in 50% of attacks.

Companies need 16 days to patch - leaving attackers weeks to exploit vulnerabilities.

WAF layered defenses

  • Cloudflare managed rules offer advanced zero-day vulnerability protections.
  • Core OWASP rules block familiar “Top 10” attack techniques.
  • Custom rulesets deliver tailored protections to block any threat.
  • WAF Machine Learning complements WAF rulesets by detecting bypasses and attack variations of RCE, XSS and SQLi attacks.
  • Exposed credential checks monitor and block use of stolen/exposed credentials for account takeover.
  • Sensitive data detection alerts on responses containing sensitive data.
  • Advanced rate limiting prevents abuse, DDoS, brute force attempts along with API-centric controls.
  • Flexible response options allow for blocking, logging, rate limiting or challenging.

Advanced WAF security

Stop account takeover

Prevent successful credential stuffing attacks from taking over user accounts.

Prevent data exfiltration

Stop data leaks to keep sensitive company data safe and private.

Block credential stuffing

See and stop abusive login attacks using stolen credentials.

Cloudflare WAF Advantages

Complete application security from our global network, with a single, integrated rules engine delivering an effective, uniform security.

Unparalleled security analytics give attack insights no other WAF provides.

Zero-day protections are in place fast for immediate virtual patching. These managed rules are deployed globally in seconds.

Machine learning protections, trained by our unparalleled visibility into threats, catch evasions and attacks.

Faster, easier security deployments for quicker mitigations and time-to-value.

We are an application security leader according to leading analysts.

Learn how our WAF uses Machine Learning

“Thanks to Cloudflare protecting us from zero-day attacks, we have the time to enhance all of our internal security controls. Cloudflare has been invaluable in enabling us to take control of our security.”
Pedro Pereira
Head of Engineering
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World-class application security from Cloudflare

The Cloudflare web application firewall (WAF) is the cornerstone of our advanced application security portfolio that keeps applications and APIs secure and productive, thwarts DDoS attacks, keeps bots at bay, detects anomalies and malicious payloads, all while monitoring for browser supply chain attacks.

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Bot Management

Deliver great customer experiences by protecting against bot attacks that harm web properties.

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API Shield

Keep APIs safe and productive with API discovery, schema validation, mTLS, DLP, anomaly detection, and more.

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Page Shield

Protect against 3rd party Magecart attacks carried out in visitors' browsers.

Cloudflare security leadership

Named a "Customers' Choice" for WAAP in the 2022 Gartner Peer Insights report.

Innovation Leader in the Frost & Sullivan Frost Radar™: Global Holistic Web Protection Market 2020 Report.

'Leader' in The Forrester Wave for DDoS Mitigation Solutions 2021.

Trusted by millions of Internet properties

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Get access to Enterprise-only features:

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24/7/365 support via chat, email, and phone

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100% uptime guarantee with 25x reimbursement SLA

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Predictable flat-rate pricing for usage based products

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Advanced Cache controls

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Bot management

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Access to raw logs

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Firewall analytics

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Role based access

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Network prioritization

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Much more
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