Security Hardening ubuntudebian intermediate

Install Fail2Ban

Install and configure Fail2Ban for brute-force protection

Overview

Install and configure Fail2Ban for brute-force protection

Commands

This will install Fail2Ban, continue?

sudo apt-get update && sudo apt-get install -y fail2ban
sudo systemctl enable --now fail2ban

Use Cases

Protect public-facing servers against SSH brute-force attacks.

FAQ

  • Locked out yourself → Unban via VNC with sudo fail2ban-client set sshd unbanip <IP>