How To Install Fail2Ban on CentOS 7

r00t July 28, 2015

Fail2Ban-centOS

This tutorial will show you how to install fail2ban on CentOS 7. For those of you who didn’t know, Fail2ban  it is a security based application for your Unix based server. The fail2ban service is commonly used to protect your SSH and FTP from unauthorized connection. Fail2ban runs as a daemon that uses python scripts to parse log files for system intrusion attempts and adds a custom rules to iptables configuration file to ban the access to certain ip addresses.

This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation fail2ban in CentOS 7 server.

Install Fail2Ban on CentOS 7

Step 1. First, you need to enable EPEL repository on your system.

Step 2. Install Fail2Ban.

Install Fail2Ban with the following command:

Start the service and make it start automatically every time you reboot your server:

Configure Fail2Ban

Step 3. Setup Fail2ban default configuration.

Now, you will see default section with some basic rules that are followed by fail2ban itself. If you want to add some extra layer of protection to your server, then you can customize the each rule section as per your needs. There are few lines act as basic setup you can edit as necessary to suit your need including: ignoreip, bantime, findtime, and maxretry. You can read what each line means in the explanation available there.

Now restart Fail2ban so the new configuration can take effect:

Congratulation’s! You have successfully installed fail2ban. Thanks for using this tutorial for installing fail2ban to protect SSH in CentOS 7 system. For additional help or useful information, we recommend you to check the official fail2ban web site.

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