to check firewall status

sudo ufw status

to block everthing incoming

sudo ufw default deny incoming

to allow everthing outgoing

sudo ufw default allow outgoing

allow ssh

sudo ufw allow ssh

allow tcp on port 2222

sudo ufw allow 2222/tcp

allow basic http server

sudo ufw allow www

enable firewall

make sure you have allow ssh before you run this!!!

sudo ufw enable