UFW setup

UncomplicatedFirewall is an interface to iptables to simplify the process of configuring a firewall on Linux systems.

Quick start

1. Check firewall status:

   sudo ufw status verbose
   

2. Disable incoming traffic and enable outgoing

   sudo ufw default deny incoming
   sudo ufw default allow outgoing
   

3. Allow usual connections

   sudo ufw allow ssh
   sudo ufw allow http
   sudo ufw allow https
   

4. Enable firewall

   sudo ufw enable
   

Extra customizations

To allow specific port ranges:

sudo ufw allow 6000:6007/tcp
sudo ufw allow 6000:6007/udp

To allow specific IP Addresses:

sudo ufw allow from 15.15.15.51
sudo ufw allow from 15.15.15.51 to any port 22