How Does File Transfer Protocol Work?
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File Transfer Protocol (FTP) is a protocol used over the Internet to allow users to transfer files to and from a remote server. It uses the client–server model, whereby a user can connect to an FTP server and then upload or download files to their computer.
When a user connects to an FTP server, the server will request authentication credentials, usually in the form of a username and password. If the user is authenticated, they will be given access to the server‘s directory structure and can browse for files. Once a file is selected, the user can choose to either download the file to their local computer, or upload a file from their local computer to the server.
When downloading a file, the FTP server sends the file to the user‘s computer in chunks, which are reassembled once the download is completed. Likewise, when uploading a file, the file is broken into chunks and sent to the FTP server, which reassembles them into the original file. This helps to ensure that no data is lost during the transfer.
Finally, after the file transmit is complete, most FTP servers will also generate a log file containing information on the user who uploaded or downloaded the file, the time of the transfer, the size of the file, the amount of data transferred and other details. This helps to trace the source of any data security breaches.