Modsecurity.org
Modsecurity Project
ModSecurity is a free, open source web application firewall that helps protect websites from online threats with customizable rules and real-time monitoring.
Protect your site with open source firewall tools
ModSecurity is a powerful open source web application firewall (WAF) designed to help you safeguard your website from a wide range of cyber threats. With support for multiple platforms, it gives you detailed visibility into HTTP(S) traffic and lets you create advanced protections using a flexible rules language and API.
Whether you're a developer, system administrator, or security enthusiast, you can use ModSecurity to detect, block, and log suspicious activity on your web applications. The site provides extensive documentation, setup guides, and community support to help you get started and make the most of its features.
You can download the latest versions, learn how to configure and deploy the firewall, and connect with other contributors. ModSecurity is ideal if you want a customizable, community-driven solution to enhance your web application's security.
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