Data as of Sep 19, 2026 · Based on 3,321,301 AI responses across 10,533 prompts · See how Parse measures this
7 of 8 measured questions
open-sourcefreeolder, signature-based wafsrigid enginesrobustaffordablelowest licensing costno license cost
ModSecuritymodsecurity.orgModSecurity is an open-source, cross-platform web application firewall (WAF) module that provides visibility into HTTP(S) traffic and offers a powerful rules language and API to implement advanced protections. It is the most widespread open-source WAF, used by businesses, government organizations, ISPs, and commercial WAF vendors on millions of domains worldwide, and its protections are strengthened when paired with the OWASP Core Rule Set. The project is under OWASP custodianship with a vibrant community and resources for getting started, deployment, configuration, and contribution.
The market map · 5 of 100 labelled
Network Firewall Solutions →
Impervaco-mentionedExcerpts where ModSecurity appeared in the AI's answer
ModSecurity / Coraza with Nginx or HAProxy on Compute Engine — Best Open-Source/DIY Option
Excerpts where ModSecurity appeared in the AI's answer
ModSecurity : An open-source WAF engine for Apache, Nginx, and IIS, often paired with the OWASP Core Rule Set (CRS).
ModSecurity paired with an Nginx or Apache reverse proxy provides robust application-layer protection
