CSF

CSF Firewall

CSF is a Stateful Packet Inspection (SPI) firewall, Login/Intrusion Detection and Security application for Linux servers.
CSF is generally considered a more advanced firewall as there are more configuration options compared to other firewalls, 
while still being simple enough to install and configure that even novice administrators can use it. 

Procedure

Install CSF from the Bread Basket Panel > Apps > Security > CSF Category. Screenshot : CSF Firewall

STEPS TO CONFIGURE CSF:

1. Click on the CSF Configuration Menu in the Bread Basket Panel under the Firewall Section.

2. Edit the configurations as per your needs.

 

3. A success message will pop-up once the changes are saved.

That’s it.

Note: You can follow this guide to learn more about CSF Configurations.
CSF Configurations Guide : http://configserver.com/cp/csf.html