>[danger] 查看防火墻是否開啟 ``` firewall-cmd --state ``` + 開啟狀態（默認） ``` [root@liang ~]# firewall-cmd --state running [root@liang ~]# ``` + 關閉狀態 ``` [root@liang ~]# firewall-cmd --state not running [root@liang ~]# ``` >[danger] 關閉防火墻 ``` [root@liang ~]# systemctl stop firewalld [root@liang ~]# ``` >[danger] 防火墻開機自啟 + 允許防火墻開機自啟（默認） ``` [root@liang ~]# systemctl enable firewalld Created symlink from /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service to /usr/lib/systemd/system/firewalld.service. Created symlink from /etc/systemd/system/multi-user.target.wants/firewalld.service to /usr/lib/systemd/system/firewalld.service. [root@liang ~]# ``` + 禁止防火墻開機自啟 ``` [root@liang ~]# systemctl disable firewalld Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service. Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service. [root@liang ~]# ```