4 How to install fail2ban packages

Sergey G. Brester edited this page 2023-06-01 16:57:11 +02:00

Table of Contents

• CentOS / CentOS Stream / RHEL Based Operating Systems
• Debian / Ubuntu
• Fedora
• if your system is not listed

• CentOS / RHEL Based
• Debian / Ubuntu
• Fedora
• another

CentOS / CentOS Stream / RHEL Based Operating Systems

Ensure your system is up to date and install the EPEL repository:

yum update -y && yum install epel-release -y

Install Fail2Ban:

yum install fail2ban

Start and enable Fail2ban:

systemctl start fail2ban
systemctl enable fail2ban

If you encounter the error that there is no directory /var/run/fail2ban to contain the socket file /var/run/fail2ban/fail2ban.sock, create the directory manually:

mkdir /var/run/fail2ban

Debian / Ubuntu

Ensure your system is up to date:

apt update && apt upgrade

Install Fail2ban:

apt install fail2ban

The service automatically starts.

Fedora

Update your system:

dnf update

Install Fail2ban:

dnf install fail2ban

Start and enable Fail2ban:

systemctl start fail2ban
systemctl enable fail2ban

if your system is not listed

Try to find fail2ban packaged for your distribution using a package management of your OS.

You could also try to install it manually.

Best practice
How fail2ban works

HowTo's

• Manually install or upgrade
• Test newer fail2ban version
• Create standalone instance
• Ban something other as host/IP, like user or e-mail
• Simple Troubleshooting of Regex

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FAQ

• Configuration

  • No failure or no ban detection
  • Proper fail2ban configuration
  • Fail2ban Troubleshooting
  • How fail2ban substitution resp. runtime interpolation works