====== 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)