[gptalk] Re: USB storage block problem.

  • From: Linux'o Mania <linuxomania@xxxxxxxxxxx>
  • To: gptalk@xxxxxxxxxxxxx
  • Date: Thu, 19 Apr 2007 09:35:47 +0100 (BST)

  Coz if you run it from User's context, it won't run as the user doesn't have 
direct access to modify HKLM\System as mentioned by Darren also.
  Run it from & only from Computer Configuration startup script...

Ananth Rajagopal <ananth.rg@xxxxxxxxx> wrote:
  So I should run from Computer Configuration, instead of user configuration?

  On 4/19/07, Darren Mar-Elia <darren@xxxxxxxxxx > wrote:        I suspect the 
problem is that you are trying to modify an HKLM reg key in the user's security 
context and they don't have permissions to do that. That is why a startup 
script was suggested?because that runs in the LocalSystem security context.
    From: gptalk-bounce@xxxxxxxxxxxxx [mailto: gptalk-bounce@xxxxxxxxxxxxx] On 
Behalf Of Ananth Rajagopal
Sent: Wednesday, April 18, 2007 8:28 PM
To: gptalk@xxxxxxxxxxxxx
Subject: [gptalk] Re: USB storage block problem.


yesterday I tried out the script and it was working fine, we deployed it by 
evening and today morning, we got an error message in all the systems, the 
error message is attached.

I had applied the script in User Configuration, as most of the users do not 
shut down their systems, we wanted the script to be applied while users logon, 
instead of when at system start. 

Kindly advice.

best regards

    On 4/18/07, Linux'o Mania <linuxomania@xxxxxxxxxxx > wrote:


    First you put this vbscript in Computer Configuration > Windows Settings > 
Scripts > Startup section. 

    Now when you restart the computers, it will do the following....


   Will set the USBSTOR key's startup value to 4 (original is 3). This will not 
let the USB Mass Storage devices start.   
   Will deny anyone's access from usb.inf, usb.pnf files. This will deny any 
newer devices from getting detected....
    Please test & share results...




Ananth Rajagopal <ananth.rg@xxxxxxxxx> wrote:

      What happens with our old script is that, when users plug in a new usb 
device the device gets accepted! I'll test the script you have send and will 
let you know as soon as possible, how it fares.

thanks for the help! 
    On 4/18/07, Ananth Rajagopal < ananth.rg@xxxxxxxxx> wrote: 
  Can you explain a bit more detailed, we already have a bat file running as 
logon script, where do I putt his script, run from the bat file or separately 
at Computer Startup event? if so can u guide me step by step. 

thanks for the reply!
    On 4/18/07, Linux'o Mania < linuxomania@xxxxxxxxxxx> wrote: 
    Use this script in GPO's Computer Startup event.... 


    Dim WshShell,Retvalue
Set WshShell = CreateObject("Wscript.Shell")

    Retvalue = WshShell.run ("%comspec% /c  %logonserver%\netlogon\xcacls 
%windir%\inf\usbstor.inf /D everyone /T /Y",0,False)

    Retvalue = WshShell.run ("%comspec% /c  %logonserver%\netlogon\xcacls 
%windir%\inf\usbstor.pnf /D everyone /T /Y",0,False) 
Set WshShell = Nothing

      Ananth Rajagopal < ananth.rg@xxxxxxxxx> wrote:

    Hi all,

We have this script running in our Windows 2003 domain. 

@echo off


regedit /s "\\Tai3dserver\SYSVOL\tai3d .com\scripts\disable.reg" 

"\ \Tai3dserver\SYSVOL\tai3d.com\scripts \subinacl.exe" /keyreg 
\system\currentcontrolset\services\usbstor /deny=system

the subinacl.exe deployment was advised by Mr. Ray Lewis, basically what the 
script does is, it modifies a registry value such that usb removable storage 
devices are not read by the system, but new usb storage devices are getting 
accessed, how do i block the modification of this registry value? Kindly 
suggest methods, I'm a novice in this... 

best regards

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