How To Install fail2ban on Fedora 34

fail2ban is Daemon to ban hosts that cause multiple authentication errors

Introduction

In this tutorial we learn how to install fail2ban on Fedora 34.

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 Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install fail2ban.

Install fail2ban on Fedora 34 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install fail2ban using dnf by running the following command:

sudo dnf -y install fail2ban

Install fail2ban on Fedora 34 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

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 Fedora 34

To uninstall only the fail2ban package we can use the following command:

sudo dnf remove fail2ban

fail2ban Package Contents on Fedora 34

References

Summary

In this tutorial we learn how to install fail2ban on Fedora 34 using yum and dnf.