Dwight Hughes
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Dwight Hughes reviewed on 08 Oct 2011
I don't like the limitations in the new interface. It is not the same game as it has been. Loss of stacked units is a drag. Overall they "dumbed down" and simplified the gameplay. Disappointing.


Dwight Hughes reviewed on 08 Oct 2011
Awesome little program, unobtrusive. Used it to remember my logins for websites initially, but now use it to generate secure passwords and keep secure notes and other information.
[Version 3.8.8]


Dwight Hughes reviewed on 03 Sep 2009
WARNING! TftpServer 3.2.1 has a serious flaw. If you are trying to use it to upload a Cisco IOS to a Cisco router or switch then DO NOT use this software... it will appear to work and then at the very end of the transfer the Cisco device will report "Timeout. Transfer Cancelled" , then you'll be stuck with no IOS in your device. Although I have not tested the theory I believe this may be caused by the software having a size limit on the file size it will transfer? For reference I have been moving IOS files of about 30MB and 50MB. Both transfers failed.

Otherwise this software seemed to work flawlessly with moving small size files up/down. I moved Cisco config files up and back with no issues.
[Version 3.2.1]

2 Replies


Dwight Hughes replied on 09 Sep 2009
- The failure to transfer large files is not a flaw of TftpServer 3.2.1 since that product is merely a GUI shell interface for the unix tftpd utility is is nonetheless an important and limiting issue. So the limitation is with that tftpd utility in Mac OS. I am running OSX 10.5 (have not gotten 10.6 yet so unsure if it may work there). The issue is with any large tftp transfer over 32MB. I have tested this from my Mac to my PC.. so it is not related to Cisco IOS problems.

Cisco IOS did a long time ago suffer from a 16MB maximum tftp transfer limitation. But any IOS equal to or newer then the following has this issue resolved now:

The Cisco IOS Software, or boot mode version, must be a minimum of 12.0(14)S, 12.1(6), 12.0(14)ST, 12.0(14)SC, 12.1(6)E, 12.1(5)DB, 12.1(5)DC, 12.1(5)T4, 12.1(6)EC, 12.1(6)E01, later versions of these trains, or any 12.2 or 12.3 version.

The following article/blog [link below] seems to confirm what I am saying:


Dwight Hughes replied on 10 Sep 2009
Thank you for the info FABRO. I have now confirmed that this is NOT a problem with TftpServer 3.2.1 or the Mac implementation of tftpd. Here is what I did.

1. Start up TftpServer 3.2.1 and make sure there is both a small file and a large (over 32MB) file in the path directory.

2. Now, from the command line type: tftp localhost

This is the built in Mac tftp client. The prompt should change to tftp>

3. Type get filename.txt [use whatever filename and extension is applicable to the small file you placed in the TftpServer 3.2.1 directory.

This file should transfer no problem. Success.

4. Now repeat step 3 above, but instead use the large file filename and extension.. after some time this transfer should time-out.

This verifies that a large file will not tyransfer.

5. Now at the command line press the CONTROL key and the Z key simultaneously to exit the built-in tftp client.

6. Type tftp -e localhost

This will open the built-in tftp client on the Mac again. But this time will enable binary mode (the default is ASCII, and also enable support for large files).

7. Repeat step 4 above. This time the large file transfer will succeed.

CONCLUSIONS: To me this verified that any problems with large file transfer are a tftp client software issue/limitation and NOT in any way related to TFTPServer 3.2.1 or the Mac OSX implementation of tftp.

So, I wholeheartedly apologize for my rush to judgement. Many thanks to FABRO for keeping on me and spurring me to do some further testing.

Of course in the final analysis the fact is still that TFTPServer 3.2.1 will not work with Cisco IOS files. This is a Cisco IOS tftp client limitation.

I wish we could find a way around it? Clearly other tftp server implementations have implemented 'tricks' to accommodate the CiscoIOS.

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