CentOS7关闭防火墙

CentOS 7.0默认使用的是firewall作为防火墙。

常用firewall命令

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1. systemctl stop firewalld.service    #停止firewall
   
2. systemctl disable firewalld.service #禁止firewall开机启动
3. 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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1. [hoegh@localhost Desktop]$ firewall–cmd ––state
   
2. running

关闭防火墙

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1. [hoegh@localhost Desktop]$ systemctl stop firewalld.service
2. PolicyKit daemon disconnected from the bus.
3. We are no longer a registered authentication agent.
4. PolicyKit daemon reconnected to bus.
5. Attempting to re–register as an authentication agent.
6. We are now a registered authentication agent.
7. [hoegh@localhost Desktop]$
8. [hoegh@localhost Desktop]$ firewall–cmd –state
9. not running
10. [hoegh@localhost Desktop]$

禁止自动启动

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1. [hoegh@localhost Desktop]$
   
2. [hoegh@localhost Desktop]$ systemctl disable firewalld.service
3. Removed symlink /etc/systemd/system/dbus–org.fedoraproject.FirewallD1.service.
4. Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service.
5. [hoegh@localhost Desktop]$

~~~~~~~ the end~~~~~~~~~
hoegh
2017.11.3