Enhancing Apache with mod_security
ModSecurity is an open source intrusion detection and prevention engine for web applications. Operating as an Apache Web server module, the purpose of ModSecurity is to increase web application security, protecting web applications from known and unknown attacks.
This will guide you through the steps to build the mod_security as a dynamic shared object into Apache web server in Fedora Core 2 (though it's pretty easy to replicate the steps for any other distro/version).
By Jorge Gallegos at Fedora News.
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