CentOS7打开关闭防火墙

CentOS7打开关闭防火墙

1. 启动：systemctl start firewalld
2. 关闭：systemctl stop firewalld
3. 查看状态： systemctl status firewalld
4. 开机禁用 : systemctl disable firewalld
5. 开机启用 ：systemctl enablefirewalld systemctl