CSF can be used on a wide range of Linux OS , including those running cPanel. These are the following steps to install and configure the CSF.

rm -fv csf.tgz

wget http://www.configserver.com/free/csf.tgz
tar -xzf csf.tgz
cd csf
sh install.sh

If you would like to disable APF+BFD (which you will need to do if you have
them installed otherwise they will conflict horribly):

sh disable_apf_bfd.sh

You can configure csf and lfd in WHM, or edit the files
directly in /etc/csf/*

csf is preconfigured to work on a cPanel server with all the standard cPanel ports open. It also auto-configures your SSH port if it’s non-standard on installation.To configure CSF modify the config files in /etc/csf/ – or if you are running WHM you can modify the CSF settings in WHM itself.You should ensure that kernel logging daemon (klogd) is enabled. Typically, VPS
servers have this disabled and you should check /etc/init.d/syslog and make sure that any klogd lines are not commented out. If you change the file,remember to restart syslog.

Uninstallation
==============
Removing csf and lfd is even more simple:

cd /etc/csf
sh uninstall.sh