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

错误信息以下：

[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.
解决方法以下：

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，固然你能够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：

而且安装iptables-services：systemctl stop firewalld
systemctl mask firewalld

设置开机启动：yum install iptables-services

systemctl enable iptables

iptables启动、关闭、保存：

systemctl [stop|start|restart] iptables #or service iptables [stop|start|restart] service iptables save #or /usr/libexec/iptables/iptables.init save