ModSecurity
Embed a cross-platform web application firewall engine in supported servers.
What’s included for free?
Libmodsecurity is ongoing-free under Apache-2.0 with no provider request quota; connectors and rule sets are installed separately.
Where it runs: Self-hosted
Provider information ↗Checked 2026-11-01
Before you use it
Apache-2.0 covers the engine. Connectors and rules such as OWASP CRS have their own licences and release cycles.
Provider terms can change. Check current pricing and usage rights before starting a project.