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How does FTP work?

File Transfer Protocol was written by Abhay Bushan on April 16, 1971. It was first published as RFC 114 then replaced by RFC 765 and RFC 959 which is the current specification for this protocol. It is used in transferring files from one host to another over a TCP/IP network. This protocol is usually employed in FTP online storage service. Have you ever wondered how FTP transfers files between computers?

The control connection is made by the client to the server using TCP on port 21 which is the default port. Once the connection is established, the server opens port 20 depending on the negotiation. This port is the data connection where data is transferred. The client sends FTP server commands over the control channel and data is transferred on the data connection. FTP uses short text commands such as LIST, PWD, APPE, DELE to manage the files on the server. FTP file permissions can also be modified by sending commands over the control channel.

FTP is a protocol that can be used to transfer large files between computers. If you are looking for an affordable file sharing service, take advantage of SmartFile’s 14 day free trial today and see how FTP can make handling files easier.

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About Brian Dowden

I am the Director of Client Services at SmartFile. My job is to make sure customers are happy with the SmartFile Web App and continue to use it. I am also responsible for being awesome 100% of the time. So far my record is flawless.

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