1 查看防火墙状态
[root@lvxinghao ~]# systemctl status firewalld
2 查看开机是否启动防火墙服务
[root@lvxinghao ~]# systemctl is-enabled firewalld
3 关闭防火墙
[root@lvxinghao ~]# systemctl stop firewalld
[root@lvxinghao ~]# systemctl status firewalld
4 禁用防火墙(系统启动时不启动防火墙服务)
[root@lvxinghao ~]# systemctl disable firewalld
[root@lvxinghao ~]# systemctl is-enabled firewalld