To enable firewall execute: $ sudo ufw enable $ sudo ufw status Disable Firewall: $ sudo ufw disable $ sudo ufw status Allow from 15.15.15.51: $ sudo ufw allow from 15.15.15.51 Show rules: $ sudo ufw status verbose
To enable firewall execute: $ sudo ufw enable $ sudo ufw status Disable Firewall: $ sudo ufw disable $ sudo ufw status Allow from 15.15.15.51: $ sudo ufw allow from 15.15.15.51 Show rules: $ sudo ufw status verbose