CentOS7 防火牆改用iptables

1. 關閉及停止使用 Firewalld:
    systemctl disabled firewalld    
    systemctl stop firewalld

2. 安裝 iptables
 yum install iptables-services

3. 啟動及設定開機執行 iptables

 systemctl enable iptables
 systemctl start iptables