The USA DOD Military Standards
Internet Protocol - IP (MIL-STD-1777) a connectionless datagram service across one or more possibly unrealiable networks
Trans. Control Protocol - TCP (MIL-STD-1778) reliable end-to-end data transfer service(OSI 4)
File Transfer Protocol - FTP (MIL-STD-1780) a process/ application layer service for the transfer of ASCII, EBCDIC & binanry files
SMTP (MIL-STD-1781) a Simple Mail Transfer Protocol
Telnet Protocol (MIL-STD-1782) a simple asynchronous termianl capability