Web Application Firewall

Built for the modern enterprise architecture

An intelligent, integrated and scalable solution to protect your business-critical web applications from malicious attacks, with no changes to your existing infrastructure.

How it works

WAF- How it works

Cloudflare Web Application Firewall's intuitive dashboard enables users to build powerful rules through easy clicks and also provides Terraform integration. Every request to the WAF is inspected against the rule engine and the threat intelligence curated from protecting over 20 Million websites. Suspicious requests can be blocked, challenged or logged as per the needs of the user while legitimate requests are routed to the destination, agnostic of whether it lives on-premise or in the cloud. Analytics and Cloudflare Logs enable visibility into actionable metrics for the user.

Built for your security needs

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Ease of Use and Management

Onboarding and management is simple and intuitive, requiring just a few clicks. Additionally, APIs enable easy rules deployments for customers who prefer to use an API interface.

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Threat Intelligence At-Scale

Cloudflare’s global distributed network enables us to curate a proprietary threat score by evaluating 1B+ IPs and analyzing digital signatures, every day.

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API Integrations

Rich API integration with popular tool sets allows easy configuration, customizable analytics and direct plug-ins for existing SIEM infrastructure. Examples include Terraform, GraphQL Splunk, SumoLogic, Datadog and more.

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Flexible Control

Firewall Rules allows customers to create custom rules for their specific needs directly from the dashboard. The rules engine supports a number of functions, operators and transformations

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Integrated Security and Performance

Our WAF sits on the same global Anycast network as our performance product suite and seamlessly integrates with DDoS protection, Bot Management, CDN, Load Balancer, Argo Smart Routing and more. Tight integration between products enables enhanced performance, as compared to legacy WAF solutions.

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High Accuracy

Our engineering team leverages Cloudflare’s proprietary threat intelligence to update Managed Rulesets regularly. This allows us to continuously improve accuracy, lower false positives and provide comprehensive coverage to protect against zero-day vulnerabilities.

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Click, Deploy, Protect

Cloudflare’s WAF enables protection against malicious attacks that aim to exploit vulnerabilities including SQLi, XSS and more, by simply turning on the OWASP Core Ruleset. To quickly protect against new and zero-day vulnerabilities, toggle to turn on Cloudflare’s Managed Ruleset. As the vulnerability landscape changes quickly, Managed Rulesets are updated regularly by Cloudflare to provide fast and seamless protection against the latest attack vectors.

There is also flexibility to build your own Firewall Rules with attributes including user-agent, path, country, query string, IP address, and more. Simulation mode enables you to quickly test your newly created rules before deploying it live.

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An integrated solution to protect all your apps, everywhere.

Cloudflare’s WAF is built to seamlessly integrate with our security and performance products including DDoS, Bot Management, CDN, Load Balancing, Argo Smart Routing and more, to deliver a highly performant and integrated security solution

Modern approach provides a uniform security solution to protect all your apps, agnostic of where they reside globally: on-prem data centers, private cloud and multiple public clouds.

Integration with existing third-party tools and systems is an important design aspect for Cloudflare’s WAF. Programmatically create rules that block potential threats in near-real time by integrating the API with third-party SIEMs, internal alerting systems, or vulnerability scanners.

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Built on a global network, that is always learning

Legacy web application firewalls do not leverage the collective intelligence of other web properties, rather require customers to build rulesets. This could be complicated, resource intensive and time consuming.

Cloudflare’s network spans across 190+ cities globally with more than 1 billion unique IP addresses passing through it every day. This scale provides unique intelligence that enables high accuracy and very low false positives.

Continuous analysis of signature-based heuristics and IP reputation on our global network powers Cloudflare’s Managed Rulesets to deliver enhanced protection. Our engineers are always enhancing the Managed Rulesets and delivering new features to protect your Internet properties.

Trusted By

Over 20,000,000 Internet properties

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