systemctl enable iptables.service
Failed to issue method call: No such file or directory
解决方案：yum install iptables-services
来源：http://serverfault.com/questions/470287/how-to-enable-iptablesinstead-of-firewalld-services-on-fedora-18
Failed to issue method call: No such file or directory
解决方案：yum install iptables-services
来源：http://serverfault.com/questions/470287/how-to-enable-iptablesinstead-of-firewalld-services-on-fedora-18
