firewall-cmd --zone = public --add-port = 80 / tcp --permanent open port 80
systemctl stop firewalld.service
systemctl start firewalld.service shut down and restart the firewall
firewall-cmd --zone = public --add-port = 80 / tcp --permanent open port 80
systemctl stop firewalld.service
systemctl start firewalld.service shut down and restart the firewall