firewalld的基本使用
启动: systemctl start firewalld
关闭:systemctl stop firewalld
查看状态: systemctl status firewalld
开机禁用 :systemctl disable firewalld
开机启用 :systemctl enable firewalld
启动: systemctl start firewalld
关闭:systemctl stop firewalld
查看状态: systemctl status firewalld
开机禁用 :systemctl disable firewalld
开机启用 :systemctl enable firewalld