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
running3.关闭防火墙：systemctl stop firewalld.service
[root@localhost bin]# systemctl stop firewalld.service
[root@localhost bin]# firewall-cmd --state
not running4.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.
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