Centos7端口映射

端口映射命令(80>8080)：

iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080

重启后会失效。

保存命令：

service iptables save

centos7没有该命令：

# service iptables save
The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, 
force-reload, status). For other actions, please try to use systemctl.

解决方法：
1.先执行如下命令：

systemctl stop firewalld
systemctl mask firewalld

2.安装iptables services

yum install iptables-services

3.设置开机启动

systemctl enable iptables

4.重启iptables service

systemctl restart iptables

5.执行保存配置命令

service iptables save