Trivial FTP (TFTP) Extension

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TFTP - Trivial File Transfer Protocol - is a protocol used to transfer files.  It has the functionality of a very basic form of FTP. Usually it is used for transmission of files to LAN routers and switches,  IP-phones, for booting of diskless workstations.

 
TFTP:

•uses UDP port 69 as its transport protocol.
•has no authentication.
•cannot list directory contents.
•is used to read files from, or write files to, a remote server.
•supports three different transfer modes, "NETASCII", "OCTET" and "MAIL".
•has a file size limit of 32 MB.

 
Actually TFTP supports the following set of parameters:

Transfer mode - specifies binary transfer mode (OCTET). In binary mode the file is moved byte by byte.

Host - specifies the remote host.

GET - specifies the transfer the file from the remote host to the local computer.

PUT - specifies the transfer the file from the local computer to the file remote host.

Source - specifies the file to transfer.

Destination - specifies where to transfer the file.

 

Because of such limited functionality of TFTP many options of the product cannot be used if a source or target server uses this protocol. The following options are not supported:

 

•any Replication mode except Full/Always;
•Move and Delete file operations;
•file renaming;
•file replacement;
•subdirectory scanning;
•user name and password (use any values here);
•proxy;
•Security modes other than None;
•some other Additional FTP options.

 

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