Host: Host name or IP address to which the port will bind.

Host：端口绑定到的主机名称或IP地址。

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You must know the external IP address, MAC address and also the Port.

您必须知道的外部IP地址，MAC地址和端口。

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You must know the external IP address, MAC address and also the Port.

您必须知道的外部IP地址，MAC地址和端口。

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