端口使用方法：Linux 中firewall的使用方法总结

firewall-cmd --list-all-zones

firewall-cmd --reload

firewall-cmd --zone=public --remove-interface=eno16777736

firewall-cmd --permanent --query-port=8080/tcp

firewall-cmd --permanent --remove-port=8080/tcp 

firewall-cmd --permanent --add-port=8080/tcp 

systemctl restart firewalld

firewall-cmd --add-forward-port=port=80:proto=tcp:toport=8080

[root@localhost ~]# firewall-cmd --list-all
public (default, active)
 interfaces: eno16777736
 sources: 
 services: dhcpv6-client ssh
 ports: 8080/tcp
 masquerade: no
 forward-ports: port=80:proto=tcp:toport=8080:toaddr=
 icmp-blocks: 
 rich rules: 

irewall-cmd --get-default-zone
firewall-cmd --set-default-zone=trusted