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On the recordRead 4 Oct 202612 facts
ModSecurity
Plans and prices
ModSecurity
Free
Open-source WAF engine · runs as a module inside a web server
Read 4 Oct 2026 · modsecurity.org
On the record
- Community
- The project directs users to Slack and GitHub for community discussions and projects and says it welcomes contributors and developers.modsecurity.org · read 4 Oct 2026
- Deployment
- The FAQ says ModSecurity runs inside a web server rather than as a standalone appliance or proxy.modsecurity.org · read 4 Oct 2026
- Maintenance
- The FAQ says ModSecurity is maintained by OWASP with support from a wider community of contributors.modsecurity.org · read 4 Oct 2026
- Performance
- The FAQ says inspecting every incoming request can have a small performance impact and that tuning rules can help keep the site running smoothly.modsecurity.org · read 4 Oct 2026
- Purpose
- ModSecurity is an open-source, rule-based web application firewall that analyzes incoming traffic and helps block malicious requests before they reach an application.modsecurity.org · read 4 Oct 2026
- Recent security fixes
- A September 2026 security update digest describes fixes in ModSecurity 2.9.15 and libmodsecurity 3.0.17 for multiple reported issues.modsecurity.org · read 4 Oct 2026
- Rule sets
- ModSecurity can run on its own or with the OWASP Core Rule Set, which the FAQ says provides broad coverage against common web attacks.modsecurity.org · read 4 Oct 2026
- Supported operating systems
- The FAQ lists Linux, Unix-like systems, Windows, and macOS when paired with a compatible web server.modsecurity.org · read 4 Oct 2026
- Traffic inspection
- The project describes ModSecurity as a cross-platform WAF module that provides visibility into HTTP(S) traffic and a rules language and API for implementing protections.modsecurity.org · read 4 Oct 2026
- Tuning
- The installation guide recommends starting in detection-only mode, reviewing and tuning events, and then enabling blocking.modsecurity.org · read 4 Oct 2026
- Usage scenarios
- The project lists real-time application security monitoring and access control, full HTTP traffic logging, continuous passive security assessment, and web application hardening as usage scenarios.modsecurity.org · read 4 Oct 2026
- Web server integrations
- ModSecurity can be installed as a module for Apache, Nginx, or IIS.modsecurity.org · read 4 Oct 2026
