CentOS7防火墙操作

显示防火墙状态

systemctl status firewalld.service

启动/关闭防火墙

systemctl start firewalld.service
systemctl stop firewalld.service

设置开机启动/禁用

下列命令执行后，重启机器防火墙的状态才会改变

systemctl disable firewalld.service
systemctl enable firewalld.service