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