建站服务器 CentOS 7.0默认使用的是firewall作为防火墙。

常用firewall命令

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systemctl stop firewalld.service    #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
firewall-cmd -- state               #查看默认防火墙状态（关闭后显示notrunning，开启后显示running）
操作示例 查看防火墙状态

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[hoegh@localhost Desktop]$ firewall-cmd --state
running
关闭防火墙

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[hoegh@localhost Desktop]$ systemctl stop firewalld.service
PolicyKit daemon disconnected from the bus.
We are no longer a registered authentication agent.
PolicyKit daemon reconnected to bus.
Attempting to re-register as an authentication agent.
We are now a registered authentication agent.
[hoegh@localhost Desktop]$
[hoegh@localhost Desktop]$ firewall-cmd --state
not running
[hoegh@localhost Desktop]$
禁止自动启动

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[hoegh@localhost Desktop]$
[hoegh@localhost Desktop]$ systemctl disable firewalld.service
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service.
[hoegh@localhost Desktop]$
~~~~~~~ the end~~~~~~~~~
hoegh
2017.11.3