ConfigServer Firewall

ConfigServer Firewall (csf) is a stateful server firewall that can be installed on Linux servers. csf is a great alternative to firewalld and it also can plug into many popular control panel software. For instance, we utilize csf on our cPanel shared hosting servers and even our internal Virtualmin servers.

Installation

Installation for CSF is very straight forward. On any Linux system, just run the following commands:

cd /usr/src
rm -fv csf.tgz
wget https://download.configserver.com/csf.tgz
tar -xzf csf.tgz
cd csf
sh install.sh

It's important to reference the full installation instructions at https://download.configserver.com/csf/install.txt for details regarding Perl modules and iptable configuration.