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sudo ufw enable
sudo ufw disable
sudo ufw reset
sudo ufw allow ssh
sudo ufw allow 22
sudo ufw allow <port>
sudo ufw allow 'Nginx Full'
sudo ufw delete allow 'Nginx http'
sudo ufw allow from <IP ADDRESS>
sudo ufw allow from <IP ADDRESS> to any port 22
sudo ufw allow 6000:6007/tcp
sudo ufw allow 6000:6007/udp
ufw allow from <IPADDRESS> to any proto tcp
sudo ufw allow proto tcp from any to any port 80,443
sudo ufw allow from 15.15.15.0/24 to any port 3306
sudo ufw allow from 15.15.15.0/24 to any port 5432
sudo ufw allow 27017
sudo nano /etc/default/ufw/
IPv6=yes
sudo ufw app list
sudo ufw status
sudo ufw status verbose
sudo apt-get install ufw
sudo apitude install ufw
sudo ufw delete allow http
sudo ufw delete allow 80
sudo ufw status numbered
sudo ufw delete 2
sudo ufw deny http
sudo ufw deny from <IPADDRESS>
sudo ufw deny out 25
sudo ufw default deny incoming
sudo ufw default allow outgoing