firewall-cmd --state                 
systemctl status firewalld           
systemctl restart firewall-cmd       

systemctl start firewalld.service
systemctl stop firewalld.service
systemctl status firewalld.service

systemctl enable firewalld
systemctl disable firewalld

firewall-cmd --zone=public --change-interface=eth1

firewall-cmd --get-services

firewall-cmd --list-ports

firewall-cmd --permanent --zone=public --add-service=https
firewall-cmd --permanent --zone=public --remove-service=https
firewall-cmd --reload