1 查看防火墙状态
[root@centos01 ~]# firewall-cmd --state
running
2 果然是运行的,于是就想disabled防火墙服务
[root@centos01 ~]# systemctl mask firewalld
ln -s '/dev/null' '/etc/systemd/system/firewalld.service'
3 然后关闭防火墙
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
4.启动防火墙
systemctl start firewalld.service #停止firewall