


This operation is not done through port 21. After agreeing on the commands for data transfer, it is necessary to wait until the channel number is received, through which the files will be transferred for downloading or uploading to the server.After connecting, the FTP client issues certain commands to the interpreter.The client connects to it and goes to the control channel. Communication is usually done via port 21, which is open by default on the server computer.

The interaction between the user’s Macintosh and FTP server is as follows: The client allows you to upload and download files from the server.įTP client programs can be built-into the operating system, web browser, HTML editor, file managers, and also be separate programs, like Commander One. Connecting to FTP server on Mac, users need to run a special FTP client on their computers that makes a connection attempt. Technically, an FTP server is a computer that external users connect to. One channel, at the same time, is used to send commands and receive responses, while the rest allow you to send and receive files.
