TFTP

TFTP（Trivial File Transfer Protocol,簡單文件傳輸傳輸協定）是TCP/IP傳輸協定族中的一個用來在客戶端機與伺服器之間進行簡單文件傳輸的傳輸協定，提供不複雜、預先配置不大的文件傳輸服務。FTP使用TCP, 但TFTP承載在UDP上，故其提供不可靠的資料流傳輸服務，不提供存取授權與認證機制，使用超時重傳方式來保證資料的到達。與FTP相比，TFTP的大小要小的多。現在最普遍使用的是第二版TFTP（TFTP Version 2,RFC 1350）[1]



TFTP, (Trivial File Transfer Protocol), is a file transfer protocol used file transferring between customer and server. With the functionality of a very basic form of FTP(File Transfer Protocol). TFTP is a simple protocol to transfer files. It has been implemented on top of the User Datagram Protocol (UDP) using port number 69. TFTP is designed to be small and easy to implement, therefore, lacks most of the features of a regular FTP. TFTP only reads and writes files (or mail) from/to a remote server. It cannot list directories, and currently has no provisions for user authentication.

TFTP could be implemented using a very small amount of memory, so was therefore useful for the device that did not have any data storage services, such as our product. It is still used to transfer small amounts of data between hosts on a network

Reference:
[1]http://forum.slime.com.tw/thread87988.html