ConfigServer Firewall (or CSF) is a free and advanced firewall available for most Linux distributions. In addition to the basic functionality of a firewall – filtering packets – CSF includes other security features, such as login/intrusion/flood detections. CSF also includes UI integration for cPanel, DirectAdmin, and Webmin.
Installing ConfigServer Firewall (CSF)
To install CSF onto your Linux distribution, just follow these 5 easy steps:
First, in order to install CSF, you must log in to your server with root user
Next, download the CSF installation pack using the following command:
wget https://www.configserver.com/free/csf.tgz
The downloaded file is a compressed form of a tar package, and has to be uncompressed and extracted before it can be used. To extract the file, use the following command and hit enter.
tar -xzf csf.tgz
Now it is time to execute the CSF’s installer script. Move to the csf directory (by using: cd csf) and execute the following installation script:
sh install.sh
The firewall is now installed. Next, you should check if the required iptables modules are available. You can check for the iptables modules using the command:
perl /usr/local/csf/bin/csftest.pl
If no fatal errors are reported, then the firewall should be working correctly.
And there you have it! If you have WHM installed on your server, you can double-check that CSF is working properly by checking under WHM’s menu >> Plugins >> ConfigServer Security&Firewall.
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