ESDS Knowledge Base


Installing CSF Firewall on Linux Server


Many are asking us to create a tutorial on how to install the CSF Firewall (ConfigServer Security & Firewall), so we created this tutorial so that you know how to install it in simple and easy way.

For those unaware, the CSF (ConfigServer Security & Firewall) is a complete tool that has a firewall, access control, among other features.

The CSF Firewall can be used widely in linux servers, including those that have cPanel / WHM installed.

Step 1: Access your server via SSH as root and execute the following commands:

rm -fv csf.tgz
tar -xzf csf.tgz
cd csf

Step 2: Now let’s test the iptables modules by typing the following command:

perl /etc/csf/csftest.p

Important! to let the CSF Firewall work properly, you should not have other firewall installed on the server. For example, if you have the BFD + APF Firewall installed, you can remove it using the following command:

sh /etc/csf/

Ready, completed installation!

Installation problems? Leave a comment on this post with your trouble we will help you.

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