CSF and LFD are very easy to install and to configure  if you are using a cpanel & WHM server.Below are the steps for

how to install CSF and LFD.

1) Log into your server and switch to the root user
2) Switch directories to your download directory
3) Download the latest version of the software:

# wget http://www.configserver.com/free/csf.tgz
4) Untar the package: # tar -xzf csf.tgz
5) Switch into the new extracted folder: # cd csf
6) Run the installer: # sh install.sh
7) If you are still running APF and BFD on your server it is necessary to disable those applications: # sh disable_apf_bfd.sh

For any reason if you want to uninstall CSF and LFD you can do easily yourself . Login to your server via SSH and switch to the root user.

1) Switch to the folder holding the uninstaller: # cd /etc/csf
2) Run the uninstaller: # sh uninstall.sh