1.开启防火墙：systemctl start firewalld.service
[root@localhost bin]# systemctl start firewalld.service
[root@localhost bin]#
2.查看状态：firewall-cmd --state 开启状态：running 关闭状态：not running
[root@localhost bin]# firewall-cmd --state
running
3.关闭防火墙：systemctl stop firewalld.service
[root@localhost bin]# systemctl stop firewalld.service [root@localhost bin]# firewall-cmd --state not running
4.开机不启动防火墙：systemctl disable firewalld.service
[root@localhost bin]# systemctl disable firewalld.service Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service. Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service. [root@localhost bin]#
centos7下 开启/关闭/查看firewall运行状态命令
原文：https://www.cnblogs.com/maxmoore/p/12067685.html