# systemctl start firewalld
# systemctl stop firewalld
# systemctl enable firewalld
# systemctl disable firewalld
		

# firewall-cmd --state
# firewall-cmd --list-all
# firewall-cmd --list-interfaces
# firewall-cmd --get-service
# firewall-cmd --query-service service_name
# firewall-cmd --add-port=8080/tcp
			

開放服務 --permanent 表示永久生效

# firewall-cmd --add-service=http
# firewall-cmd --permanent --add-service=http
# systemctl restart firewalld