How to Install and Configure fail2ban on Ubuntu 26.04

To install and configure fail2ban on Ubuntu 26.04, enable the sshd jail.

Step 1 : Update.

sudo apt update

Step 2 : Install fail2ban.

sudo apt install fail2ban

Step 3 : Enable the sshd jail.

sudo tee /etc/fail2ban/jail.d/sshd.local <<'EOF'
[sshd]
enabled = true
EOF

Step 4 : Enable and start.

sudo systemctl enable --now fail2ban

Step 5 : Check status.

sudo systemctl status fail2ban

Step 6 : Check the sshd jail.

sudo fail2ban-client status sshd

You have installed and configured fail2ban on Ubuntu 26.04.