ufw cheatsheet

ufw_cheatsheet

Installation
sudo apt install ufw

GUI version
sudo apt install gufw

Enable firewall
sudo ufw enable

Check rules & status
sudo ufw status
sudo ufw status verbose

Allow applications
sudo ufw allow ssh            # Allow SSH port 22
sudo ufw allow http           # Allow web server port 80
sudo ufw allow https          # Allow web server port 443
sudo ufw allow 4444           # Allow port 6565
sudo ufw allow 4444/tcp       # Allow port 6565 TCP only
sudo ufw allow 4444/udp       # Allow port 6565 UDP only

sudo ufw allow 1714:1764/udp  # Allow Port From 1714 to 1764 UDP
sudo ufw allow 1714:1764/udp  # Allow Port From 1714 to 1764 TCP

Remove allowed applications
sudo ufw delete allow tcp     # Remove Allow TCP Entry

Reload firewall
sudo ufw reload