UFW Setup Guide – Ubuntu 24.04

UFW is pre-installed on most Ubuntu 24.04 systems. Check it:

ufw --version
sudo ufw status verbose

If missing:

sudo apt update
sudo apt install ufw -y

Warning: Always allow SSH before enabling UFW!

sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw allow OpenSSH
# Optional:
sudo ufw allow http
sudo ufw allow https
sudo ufw enable

Action	Command
Status	`sudo ufw status verbose`
Turn off	`sudo ufw disable`
Delete rule #N	`sudo ufw delete N`
Reset	`sudo ufw reset`

Locked out? → Use VPS console recovery
Port not open? → Check sudo ufw status numbered
Always allow SSH first