SFTP (Secure File Transfer Protocol) is a file transfer protocol similar to FPT but with additional security (both commands and data are encrypted).
See the chart on the Choose a File Transfer Protocol page for information about which protocols are recommended for specific client/server combinations.
The NAS fundamental is the utilization of a data network protocol, IP (and more precisely, TCP/IP) to a file-share protocol.
Kermit, A File Transfer Protocol, by Frank da Cruz (Digital Press 1987)... describes, as the title states, a file transfer protocol.
To decide which of the recommended protocols is the best one for your transfer, see How to Choose a File Transfer Protocol.
"Kermit, A File Transfer Protocol, by Frank da Cruz (Digital Press, 1987), will satisfy your appetite if you wish to learn more about this fascinating protocol than is covered here.
Kermit, A File Transfer Protocol, Frank da Cruz, Digital Press, 1987.
Kermit, a File Transfer Protocol, Frank da Cruz and Bill Catchings, BYTE Magazine, June & July 1984.
Reviews of "Kermit, A File Transfer Protocol" This book contains general information about Kermit.
I also highly recommend da Cruz' text for anyone designing a file transfer protocol". Pete Maclean, Desktop Communications with IBM Personal Computers, Wiley, 1987.
If you are transferring files between other systems, please see the Choose a File Transfer Protocol page to find the secure method that's right for your needs.
