centos基础安装

yum instatll gcc gcc-c++

yum install iptables-service telnet net-tools epel-release  -y

yum iftop iotop iptables-services -y

关闭centos7原有的firewalld

systemctl disables firewalld

systemctl stop firewalld

开机开启iptables-service

chkconfig iptables on