How To Install fail2ban on AlmaLinux 8
Introduction
In this tutorial we learn how to install fail2ban on AlmaLinux 8.
What is fail2ban
Fail2Ban scans log files and bans IP addresses that makes too many password failures. It updates firewall rules to reject the IP address. These rules can be defined by the user. Fail2Ban can read multiple log files such as sshd or Apache web server ones. Fail2Ban is able to reduce the rate of incorrect authentications attempts however it cannot eliminate the risk that weak authentication presents. Configure services to use only two factor or public/private authentication mechanisms if you really want to protect services. This is a meta-package that will install the default configuration. Other sub-packages are available to install support for other actions and configurations.
We can use yum or dnf to install fail2ban on AlmaLinux 8. In this tutorial we discuss both methods but you only need to choose one of method to install fail2ban.
Install fail2ban on AlmaLinux 8 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
After updating yum database, We can install fail2ban using dnf by running the following command:
sudo dnf -y install fail2ban
Install fail2ban on AlmaLinux 8 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
After updating yum database, We can install fail2ban using yum by running the following command:
sudo yum -y install fail2ban
How To Uninstall fail2ban on AlmaLinux 8
To uninstall only the fail2ban package we can use the following command:
sudo dnf remove fail2ban
References
Summary
In this tutorial we learn how to install fail2ban on AlmaLinux 8 using yum and dnf.
