How to install iptables on CentOS7(CentOS7のiptablesのインストール方法)

gistfile1.txt

Step1
yum install iptables-services

Step2
to start iptables 起動
systemctl start iptables 

to stop iptables 停止
systemctl stop iptables

to restart iptables 再起動
systemctl restart iptables

to reload iptables リロード
systemctl reload iptables