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; |
| • | user name and password (use any values here); |
| • | proxy; |
| • | Security modes other than None; |
| • | some other Additional FTP options. |
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