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ftp有问题,据说和被动模式(passive mode)有关.请教
Active mode: The client will use PORT command to send a port number to the server, the server will use that port number as a destination port to connect to the client.
Passive mode: The server will open a port number and inform the client, the client will use the port number to connect to the server.
The main difference is the in active mode the server will initiate the connection for data transfering and in passive mode the client will initiate the connection for data transfering |
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