FTP protocol or file transfer over the network took root in 1980. This is when the first RFC for FTP protocol was ever published. The functions of FTP include uploading, downloading and deleting files, creating and deleting directories, and reading directory contents. FTP has certain disadvantages which makes it harder to use although it is very popular. Major drawbacks would be the lack of uniform format for directory listing – though not supported by some servers; this problem was partially solved by introducing MLST command. Another disadvantage would be the presence of secondary connection (DATA connection). FTPS is the secured version of FTP.