What is FTP? FTP is short for File Transfer Protocol. A protocol is a set of rules that networked computers use to talk to one another. And FTP is the language that computers on a TCP/IP network (such as the internet) use to transfer files to and from each other. File Transfer Protocol (FTP) allows a person to transfer files between two computers This is usually a client and a server, while being connected to the Internet FTP makes it possible to move one or more files between computers with security and data integrity controls appropriate for the Internet. FTP is a TCP-based service that utilizes a data port and a control port. Traditionally these are port 21 for the command port and port 20 for the data port. In active mode, the FTP client doesn't make the actual connection to the data port of the server; it simply states what port it is listening on and the server connects to the specified port on the client. In passive mode, the client initiates all co