This article was previously published under Q102737
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Windows NT supports both file transfer protocol (FTP) and trivial filetransfer protocol (TFTP) under its implementation of TCP/IP. Both of theseprotocols can be used for transferring files across the Internet. Thedifferences between the two protocols are explained below:
FTP is a complete, session-oriented, general purpose file transfer protocol. TFTP is used as a bare-bones special purpose file transfer protocol.
FTP can be used interactively. TFTP allows only unidirectional transfer of files.
FTP depends on TCP, is connection oriented, and provides reliable control. TFTP depends on UDP, requires less overhead, and provides virtually no control.
FTP provides user authentication. TFTP does not.
FTP uses well-known TCP port numbers: 20 for data and 21 for connection dialog. TFTP uses UDP port number 69 for its file transfer activity.
The Windows NT FTP server service does not support TFTP because TFTP does not support authentication.
Windows 95 and TCP/IP-32 for Windows for Workgroups do not include a TFTP client program.
Microsoft Windows NT Advanced Server 3.1, Microsoft Windows NT Workstation 3.1, Microsoft Windows NT Advanced Server 3.1, Microsoft Windows NT Workstation 3.5, Microsoft Windows NT Workstation 3.51, Microsoft Windows NT Server 3.5, Microsoft Windows NT Server 3.51, Microsoft TCP/IP for Windows for Workgroups 3.11, Microsoft TCP/IP for Windows for Workgroups 3.11a, Microsoft TCP/IP for Windows for Workgroups 3.11b, Microsoft Windows for Workgroups 3.11, Microsoft Windows 95