While threats are growing more sophisticated, most WAF products aren't
Organizations need a web application firewall (WAF) to protect against application attacks such as SQLi, XSS, CSRF, and more — especially since the average worldwide cost of a data breach reached $4.88 million in 2024.
However, many WAF products struggle to achieve accurate true positive and false positive detection rates. They're often slow and inefficient. They're also hard to manage, requiring users to write and maintain complex rules. Such WAFs consume more resources, raise operational costs, and impact user experiences.

No-compromise threat protection
HAProxy Enterprise WAF, powered by the Intelligent WAF Engine, provides exceptional accuracy out-of-the-box – with ultra-low latency.
Advanced threat detection powered by threat intelligence, enhanced by machine learning, virtually eliminates false negatives and false positives with almost zero performance impact on legitimate traffic.
Implement an optional patent-pending OWASP CRS compatibility mode with drastically lower latency and false positive rate.
Last in line, first in performance
Our data science team uses threat intelligence data to train our security models, resulting in extremely accurate and efficient threat detection algorithms — without relying on static lists and regex-based attack signatures.
99.61%
True-positive rate
97.45%
True-negative rate
98.48%
Balanced accuracy rate
<1ms
Added latency
Smarter detection and protection
Learn how HAProxy Enterprise WAF boosts your cybersecurity posture without impacting application performance — alongside simple management, and more.
Open source WAF benchmarking data demonstrates exceptional balanced accuracy, with minimal false positives and false negatives. HAProxy Enterprise WAF also guards against elusive zero-day threats.
Threat detection and traffic filtering happen in microseconds, giving users a responsive experience while keeping resource use and operational costs low.
Effective out-of-the box behavior without complex rules. Centralized control and observability with HAProxy Fusion simplifies multi-cluster, multi-cloud, and multi-team WAF management.
Our global network provides threat intelligence enhanced by machine learning to power the Intelligent WAF Engine, overcoming the limitations of static rules.
Do more with HAProxy One
The world's fastest application delivery and security platform seamlessly blends data plane, control plane, and edge network to deliver the world's most demanding applications, APls, and Al services in any environment.
HAProxy Enterprise
A flexible data plane layer that provides high-performance load balancing, an API/Al gateway, Kubernetes application routing, best-in-class SSL processing, and multi-layered security.
HAProxy Fusion Control Plane
A scalable control plane that provides full-lifecycle management, monitoring, and automation of multi-cluster, multi-cloud, and multi-team HAProxy Enterprise deployments.
HAProxy Edge
A secure edge network that provides a high-capacity global ADN and threat intelligence — enhanced by machine learning — that powers the next-generation security layers in HAProxy Fusion and HAProxy Enterprise.
World-class experience
24/7 support from real humans! We're the authoritative experts on HAProxy — including the edge, data plane, control plane, and security layers. We'll do whatever it takes to make your HAProxy deployment a success.
What are users saying about HAProxy Enterprise WAF?
"The next-generation HAProxy Enterprise WAF protects our public APIs and user portal and makes a valuable improvement to our overall application security posture.
Other on-premises solutions didn't scale well with our global scope and huge API traffic load, but the new HAProxy Enterprise WAF with the Intelligent WAF Engine keeps latency and resource use low, while having a very low false positive rate and thus negligible negative impact on our clients."

"I have more control with the HAProxy Enterprise WAF than I would with a standard open source WAF. It’s awesome and a big factor in why we chose HAProxy Enterprise."
Seamless integrations with essential tech
