openSUSE:12.2 openSUSE 12.2 https://download.opensuse.org/distribution/12.2/repo/oss/ apache2-mod_security2 ModSecurity Open Source Web Application Firewall ModSecurity(TM) is an open source intrusion detection and prevention engine for web applications (or a web application firewall). Operating as an Apache Web server module or standalone, the purpose of ModSecurity is to increase web application security, protecting web applications from known and unknown attacks.