firewall-cmd examples
systemctl status firewalld
firewall-cmd --state
firewall-cmd --get-default-zone
firewall-cmd --get-active-zones
firewall-cmd --get-zones
firewall-cmd --set-default-zone=home
firewall-cmd --permanent --zone=internal --change-interface=eth0
firewall-cmd --list-all
firewall-cmd --reload
firewall-cmd --list-interfaces
firewall-cmd --add-interface=<interface>
firewall-cmd --add-service=http
firewall-cmd --add-port=443/tcp
firewall-cmd --permanent --add-port=443/tcp
firewall-cmd --add-masquerade
firewall-cmd --add-service=dns --add-service=dhcp
firewall-cmd --runtime-to-permanent
firewall-cmd --permanent --direct --get-all-rules
Written on November 9, 2016