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TFTP Module |
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The CommuniGate TFTP module implements a TFTP server for UDP/IP networks.
The TFTP protocol allows a TFTP client application to retrieve files from the
Server computer. The CommuniGate Pro TFTP clients can retrieve data stored in
Personal File Sites.
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Trivial File Transfer Protocol
The Trivial File Transfer Protocol allows client computers to work with files
stored on remote servers. A computer running a TFTP client
application sends UDP request packets to the server computer. These packets contain the
name of the file to retrieve and the transfer mode. In return, the Server computer sends a
UDP packet with a block of file data. If the file is larger than one block, then the client
computer sends an ACK (acknowledgement) packet, and the Server sends the next block of file
data in response.
The CommuniGate Pro TFTP module supports relevant Internet standards (RFCs).
Configuring the TFTP module
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Use a Web browser to configure the TFTP module. Open the Obscure page in the
WebAdmin Settings section.
- Log
- Use this setting to specify what kind of information the TFTP
module should put in the Server Log. Usually you should use the Major
(password modification reports) or Problems (non-fatal errors)
levels. But when you experience problems with the TFTP module, you may want
to set the Log Level setting to Low-Level or All Info:
in this case protocol-level or link-level details will be recorded in the
System Log as well.
The TFTP module records in the System Log are marked with the TFTP tag.
- listener
- Use this link to open the UDP Listener page and specify the port number and
local network address for the TFTP service, and access restrictions for
that port. When the port number is set to 0, the TFTP server is disabled.
By default TFTP clients send requests to the UDP port 69.
If your server computer is already running some TFTP server, you may want to specify
a non-standard port number here and reconfigure your TFTP client software to use that
port number.
- Default Site
- Since the TFTP module does not provide user authentication, you need to specify which
Personal File Site is used by default. Specify a name of an existing Account in this field.
If that Account does not belong to the Main Domain, specify the full Account name as
accountName@domainName.
Providing Access to Personal File Sites
- The file name specified in the TFTP read request packet is interpreted as the name of
a file in the Default Personal File Site. This name should not point to a file inside the
private subdirectory, otherwise the access denied error is returned.
If the specified file name starts with the slash (/) or tilda (~) symbol,
the file name should contain at least one non-leading slash symbol. The string between the leading
special symbol and that slash symbol is interpeted as an Account name, and the string after that slah symbol -
as the name of the file to retrieve from the Personal File Site of the specified Account. That name
should not specify any file inside the private subdirectory of that Personal File Site.
The addressed Account must have the WebSite Service enabled to allow TFTP clients to retrieve files from
its Personal File Site.
Examples:
| TFTP filename parameter | Addressed file |
| file1.dat | file1.dat in the Default Site |
| dirA/file1.dat | file1.dat in the dirA subdirectory of the Default Site |
/john/file1.dat
~john/file1.dat | file1.dat in the Account john Personal File Site |
/john/dirB/file1.dat
~john/dirB/file1.dat | file1.dat in the dirB subdirectory of the Account john Personal File Site |
/john@domain1.dom/dirB/file1.dat
~john@domain1.dom/dirB/file1.dat | file1.dat in the dirB subdirectory of the Account john@domain1.dom Personal File Site |
CommuniGate® Pro Guide. Copyright © 1998-2006, Stalker Software, Inc.
