centos7 安装 iptables

#先检查是否安装了iptables
service iptables status
#安装iptables
yum install -y iptables
#升级iptables
yum update iptables 
#安装iptables-services
yum install iptables-services

#停止firewalld服务
systemctl stop firewalld
#禁用firewalld服务
systemctl mask firewalld