In this article we will discuss File Transfer Protocol, will make brief discussion on File Transfer Protocol, In last article we discuss about DHCP Operation.
FTP is another commonly used application layer protocol. FTP was developed to allow for data transfers between a client and a server. An FTP client is an application that runs on a computer that is used to push and pull data from an FTP server.
The File Transfer Protocol is a standard network protocol used for the transfer of computer files between a client and server on a computer network. FTP is built on a client-server model architecture using separate control and data connections between the client and the server., to successfully transfer data, FTP requires two connections between the client and the server, one for commands and replies, the other for the actual file transfer:
The client establishes the first connection to the server for control traffic using TCP port 21, consisting of client commands and server replies.
The client establishes the second connection to the server for the actual data transfer using TCP port 20. This connection is created every time there is data to be transferred.
The data transfer can happen in either direction. The client can download (pull) data from the server, or the client can upload (push) data to the server.
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