Pre-Packaged, Binary Installation
The easiest method of installing ModSecurity is to use your existing OS Package Manager application (Yum or Aptitude) to install it from your default OS Repository.
Installation - Ubuntu/Debian
$ sudo apt-get install libapache2-mod-security $ sudo a2enmod mod-security $ sudo /etc/init.d/apache2 force-reload
Installation - Fedora/CentOS
$ sudo yum install mod_security $ sudo /etc/init.d/httpd restart
Installation - Microsoft IIS (MSI Installer)Installation information for IIS
Source Code Downloads
ModSecurity is an open source product licensed under ASLv2. It comes with full source code and documentation. Current releases are signed by Breno Silva. These public keys are available via most PGP key server mirrors.
ModSecurity for Apache (Stable Release Quality)Installation information for Apache
ModSecurity for Nginx (Stable Release Quality)
NOTE: The Nginx module is contained within the Apache archive package. You must first compile ModSecurity with the --enable-standalone-module flag and then compile the Nginx code to use it. See the Blog post for more information.Installation information for Nginx
ModSecurity Status (v2.7.5)
Apache (Stable): download
IIS (Stable): download
Nginx (Stable): download