sudo ufw status

sudo ufw status verbose

sudo ufw status numbered

Status: active

To                         Action      From
--                         ------      ----
22/tcp                     ALLOW       Anywhere
80/tcp                     ALLOW       Anywhere
443/tcp                    ALLOW       Anywhere

sudo ufw enable

sudo ufw disable

sudo ufw default deny incoming

sudo ufw default allow outgoing

sudo ufw allow 22/tcp

sudo ufw allow 80/tcp

sudo ufw allow 53

sudo ufw allow 8000:9000/tcp

sudo ufw allow from 192.168.1.10 to any port 22 proto tcp

sudo ufw allow from 192.168.1.0/24

sudo ufw allow from 192.168.1.0/24 to any port 22 proto tcp

sudo ufw allow in on eth0 to any port 80

sudo ufw deny 53

sudo ufw deny from 192.168.1.50

sudo ufw deny from 192.168.1.50 to any port 22 proto tcp

sudo ufw deny in on eth0

sudo ufw delete allow 80/tcp

sudo ufw delete allow from 192.168.1.10 to any port 22 proto tcp

sudo ufw status numbered

sudo ufw delete 2

sudo ufw app list

Available applications:
  OpenSSH

sudo ufw allow OpenSSH

sudo ufw logging on

sudo ufw logging off

sudo ufw logging medium

sudo ufw reset

sudo ufw route allow in on eth0 out on eth1