tftp disable

[Jef]

I am running windows 2000pro and I need to install a 3rd
party tftp server. I got it installed but when I try and
run the program it tells me that there is already a tftp
server running on port 69. Is there any way to disable the
existing windows tftp server?


thanks for any help


Jef

 

[Ken Simmons [MSFT]]

Hi Jef,

To disable TFTP, edit %Systemroot/System32/Drivers/Etc/Services by changing
the line "tftp 69/udp" to "tftp 0/udp". This disables the TFTP client.

Regards,
Ken Simmons

Microsoft Technical Support for Platforms and Business Applications

 

[David H. Lipman]

Are you kidding ?
What you describe is a NON standard TCP/IP implementation !

The etc/services table for identification and naming TCP and UDP port numbers not for
loading them. It is not a etc/inetd table. For example, if I load TCPView.exe, it
interprets the etc/services table so I can see a name to the port rather than just seeing a
number.

What you describe makes zero sense !

I have the Hummingbird Exceed suite of utilities on on my Network Management Station (NMS)
and use the Hummingbird TFTP Daemon (service). I have NO problems loading their TFTP Daemon
and the etc/services table has the following extracted entries... using the following
command line (yours has a syntax error...)

notepad %windir%\System32\Drivers\Etc\Services

tftp 69/tcp Trivial File Transfer
tftp 69/udp

Please explain this inconsistency.

Dave



| Hi Jef,
|
| To disable TFTP, edit %Systemroot/System32/Drivers/Etc/Services by changing
| the line "tftp 69/udp" to "tftp 0/udp". This disables the TFTP client.
|
| Regards,
| Ken Simmons
|
| Microsoft Technical Support for Platforms and Business Applications
|
|
|
| | > I am running windows 2000pro and I need to install a 3rd
| > party tftp server. I got it installed but when I try and
| > run the program it tells me that there is already a tftp
| > server running on port 69. Is there any way to disable the
| > existing windows tftp server?
| >
| >
| > thanks for any help
| >
| >
| > Jef
|
|

 

[David Robbins]

I am running windows 2000pro and I need to install a 3rd
party tftp server. I got it installed but when I try and
run the program it tells me that there is already a tftp
server running on port 69. Is there any way to disable the
existing windows tftp server?


thanks for any help


Jef

where is the tftp server in win2k pro?? i run that here and don't have
anything listening on port 69. i would take a good look at your processes
to see what is already running and use one of the tools to see what port the
process belongs to. there are viruses and worms that use tftp, code red and
nimda are a couple of them i think.

in doing a bit more checking, win2k does include a tftp client, but q142373
says:

<quote>
Chapter 1 of the Microsoft Windows NT Server TCP/IP versions 3.5 and 3.51
guides mention that Microsoft TCP/IP includes Trivial File Transfer Protocol
(TFTP). Windows NT includes the TFTP client utility (TFTP.EXE) only, because
TFTP does not provide user authentication. TFTP server utilities are
available from third-party software vendors.
<unquote>

so i would guess that either you or someone else installed a tftp service on
that machine already.

 

[David H. Lipman]

David R:

You bring up an *EXCELLENT* point !

A virus, worm or Trojan may be loading on Jef's PC. The Nimda can intiate a TFTP session
and so does the Nachi worm.

Jef:

Go to McAfee and/or Trend (http://housecall.antivirus.com) and perform an online scan of
your platform and report back your results.

Dave



| where is the tftp server in win2k pro?? i run that here and don't have
| anything listening on port 69. i would take a good look at your processes
| to see what is already running and use one of the tools to see what port the
| process belongs to. there are viruses and worms that use tftp, code red and
| nimda are a couple of them i think.
|
| in doing a bit more checking, win2k does include a tftp client, but q142373
| says:
|
| <quote>
| Chapter 1 of the Microsoft Windows NT Server TCP/IP versions 3.5 and 3.51
| guides mention that Microsoft TCP/IP includes Trivial File Transfer Protocol
| (TFTP). Windows NT includes the TFTP client utility (TFTP.EXE) only, because
| TFTP does not provide user authentication. TFTP server utilities are
| available from third-party software vendors.
| <unquote>
|
| so i would guess that either you or someone else installed a tftp service on
| that machine already.
|
|