CentOS 7 防火墙 出现Failed to start iptables.service: Unit iptables.service failed to load

错误信息如下:

[root]# service iptables start
Redirecting to /bin/systemctl start  iptables.service
Failed to start iptables.service: Unit iptables.service failed to load: No such file or directory.

解决方法如下:

一直用CentOS 6 习惯了,一下没适应过来。防火墙配置后执行service iptables save 出现”Failed to restart iptables.service: Unit iptables.service failed to load: No such file or directory.”错误,

在CentOS 7或RHEL 7或Fedora中防火墙由firewalld来管理,当然你可以还原传统的管理方式。或则使用新的命令进行管理。

假如采用传统请执行一下命令:

systemctl stop firewalld
systemctl mask firewalld 并且安装iptables-services:
yum install iptables-services
 设置开机启动:
systemctl enable iptables

iptables启动、关闭、保存:

systemctl [stop|start|restart] iptables
#or
service iptables [stop|start|restart]

保留现有规则:
service iptables save
#or
/usr/libexec/iptables/iptables.init save
#or
iptables-save > /etc/sysconfig/iptables

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