UFW Firewalls are EASY! Setup and manage your UFW in Ubuntu 22.04

Setting up and managing your firewall in Ubuntu is simple. Here is a guide showing you everything you need to know to manage your firewall effectively! BE SURE TO ALLOW YOURSELF ON SSH BEFORE ENABLING FIREWALL! Enable UFW sudo ufw enable Disable UFW sudo ufw disable Allow a service sudo ufw allow ssh Allow a service from a specific ip range sudo ufw allow from 192.168.0.0/24 to any port 22 proto tcp Check status of UFW sudo ufw status Get numbered rules for UFW sudo ufw status numbered Delete a rule by number sudo ufw delete [number of rule] Reload UFW sudo ufw reload Deny by default all incoming sudo ufw default deny incoming Allow outgoing by default sudo ufw default allow outgoing Allow specific port sudo ufw allow 443/tcp Allow range of ports sudo ufw allow 443:449/tcp Block specific ip sudo ufw deny from 123.123.123.123 Block specific ip on specific port sudo ufw deny from 123.123.123.123 to any port 22 Check what an application rule allows sudo ufw app info apache That is it, deny all incoming connections by default, and figure out what needs to be allowed, common ports: 80 - http, 443 - https, 22 - ssh