How do I disable NTLMSSP in Windows 2000?

Thank you
Willi


Simo Sorce wrote:

Thank you Willi,
unfortuately the traces is encapsulated in an ntlmssp encrypted session
so I cannot see anything.
Can you kindly disable ntlmssp and redo the sniff from beginning?
feel free to send the sniff only to me if you fear information
disclosure.

Simo.

On Tue, 2002-12-31 at 00:38, Willi Mann wrote:

Hi Simo!

I've put the sniff and the script which produced the shutdown on my homepage:

http://www.wm1.at/samba/wmisniff.bin
http://www.wm1.at/samba/RemoteShutdown.vbs

w2k Professional german (192.168.0.1, P4) has the sniffer and asks a w2k server german (192.168.0.254, WILLI) to do the shutdown. It only works if you have the same passwords on both of the two machines. Don't ask me about the sense of the for--next loop.

Willi


Simo Sorce wrote:


On Mon, 2002-12-30 at 01:06, Willi Mann wrote:



Hi Andrew!

The existing net rpc shutdown function doesn't seem to be able to do a power off. It seems to be an implementation of the initiateSystemShutdown API-call, which is used in many freeware closed-source shutdown applications. I've played around with the flags in the current Samba-implementation with the following result:
If one of the first 8 bits is set to 1 the machine reboots.
The second 8 bits mark the forced shutdown but I haven't verified that it makes a difference to non-forced shutdowns.


the 16bit flags we show in the source are really 2 booleans in the form
of two bytes imho, I'm modifying the code in samba to behave this way.

I made some test and I think you are right the rpc shutdown function is
equivalent to InitiateSystemShutdownEx call on windows, so no power off
possible, only the 2 booleans: force shutdown and reboot on shutdown.




There is a way for a working remote power off. The WMI-framework provides a function called win32shutdown. This function is also used by the Management Console-Shutdown. It offers nearly all flags which are available in the ExitWindowsEx-function. It is completely different to the net rpc shutdown. I've modified a VBscript-example provided in the WMI-SDK to get the shortest possible shutdown-session and sniffed it. There are about 100 packets on the wire (incl. authentication, SYNs, RSTs, etc.) I'll try to work out more about that in the next few days.


If you can send me the trace (ina aformate readable by ethereal) I'm
interested at looking into it and see how it is done.

Simo.






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