If it exists, you can skip the ModSecurity module installation step and go directly to “set up the module” section directly. Check the file /usr/local/lsws/modules/mod_security.so to see if it exists or not. If you install OpenLiteSpeed through packages, such as yum or apt-get, ModSecurity module may have been included in your package already.

OpenLiteSpeed began supporting modules in version 1.3 but has only included and supported the ModSecurity module as of version 1.4.29. For this guide, we assume you already have a working installation of OpenLiteSpeed 1.4.29 or greater. The ModSecurity module allows OpenLiteSpeed to use common ModSecurity rules to improve server security. How to enable mod_security such as OWASP or COMODO rule set on OLS? Configure OLS to use OWASP Master ModSecurity rule file.Rename some sample rules under rules/ directory.Enabling OWASP ModSec_3.0 rule set on OLS?.Configure OLS to use Comodo Master ModSecurity rule file.Enabling COMODO ModSec_3.0 rule set on OLS?.Set up the Module with a simple test rule and verify if mod_security works on OLS or not.Add the ModSecurity Module when mod_security.so doesn’t exist.OpenLiteSpeed should be 1.4.29 or higher to use mod_security.OLS only supports ModSecurity 3.x, but not 2.x.How to enable mod_security such as OWASP or COMODO rule set on OLS?.

Comodo modsecurity rules