ConfigServer ModSecurity Control Feature
Note: the following only applies to Cloud VPS and Dedicated hosting plans.
ConfigServer ModSecurity Control is a WHM add-on that is used to manage 'mod_security' rules/whitelists on a per-account basis and can be downloaded from it's website.
To install ConfigServer ModSec Control:
Log in to your server via SSH as the root user and it's password (provided to you in your welcome email)
Execute the following commands:
tar xf cmc.tgz
cd .. && rm -rf cmc cmc.tgz
Once done, refresh your browser and then log in to WHM and you should see the plugin on the left sidebar.