那个路由设置的一项Virtual servers
说明：
This function will allow you to route external (Internet) calls for services such as a web server (port 80), FTP server (Port 21), or other applications through your Router to your internal network.
格式是这样的：
这里应该如何设置EM的端口。
另外一项Application gateways
说明：
Some applications such as games, video conferencing, remote access applications and others require that specific ports in the Router's firewall be opened for access by the applications. You can configure the port settings from this screen. Note: Opening ports in your firewall can pose a security risk. You can enable and disable settings very quickly. It is recommended that you disable the settings when you are not using a specific application.
格式是这样的：
这里需要设置么？ 应该如何设置呢？
先谢谢帮助我的各位。
