Install ConfigServer firewall application

ConfigServer firewall is a popular Linux firewall security suite. It is easy to install, flexible to configure, and secure with extra checks. CSF helps to control exactly what traffic is allowed in and out of the server and to protect the server from malicious attacks.

The installation is quite straightforward:

tar -xzf csf.tgz
cd csf

To edit the settings of an installed application, use this command:

nano /etc/csf/csf.conf

Additional information about CSF configuration can be found here:

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