centos firewall

centos firewall 防火牆開端口

firewall-cmd --zone=public --add-port=49152-65535/udp --permanent

firewall-cmd --list-ports

firewall-cmd --reload

firewall-cmd --state

 

 

 

 

systemctl status firewalld

systemctl start firewalld

 

 

 

禁止開機啓動

 

systemctl disable firewalld.service 

 

 

移除指定端口：

firewall-cmd --permanent --remove-port=123/tcp

 

若遇到無法開啓

先用：systemctl unmask firewalld.service 

然後：systemctl start firewalld.service