====== ufw firewall command cheatsheet ====== ===== allow rules ===== $ sudo ufw allow 12345/udp Rules updated Rules updated (v6) $ sudo ufw allow ssh Rules updated Rules updated (v6) ===== ufw enable / disable ===== $ sudo ufw enable Command may disrupt existing ssh connections. Proceed with operation (y|n)? y Firewall is active and enabled on system startup ===== ufw status ===== $ sudo ufw status Status: active To Action From -- ------ ---- 12345/udp ALLOW Anywhere 88/tcp ALLOW Anywhere 12345/udp (v6) ALLOW Anywhere (v6) 88/tcp (v6) ALLOW Anywhere (v6)