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Posted by Steven L Umbach on May 20, 2006, 1:41 am
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You can easily have different passwords for different users for logon access
so I am not sure what you are getting at there. I don't know of a way to
"User password is only good for 1-2 file showings" but you could create a
Scheduled Task using the cacls command to change NTFS permissions to the
files in question at a certain time/date. If the user does not have any
permissions to the files he can not access them from within the operating
system assuming he is not a local administrator or owner of the files.
Having said that there is nothing to stop the user from copying the file to
somewhere else when he does have access to the files. You might be able to
minimize [depending on the users skill and desire] that risk if the user has
permissions to the files located in a folder he does not have permissions to
and can access the file only by the direct file path such as through a
shortcut. Bottom line is if you can not trust the user do not let him have
access to your files.
There is a way in Windows 2000/2003/XP Pro to encrypt files with EFS but I
don't see how that can help as long as he user is going to need access to
the files. Do not attempt using EFS to encrypt files unless you understand
the risks which include you loosing permanent access to your files. ---
Steve
http://www.ss64.com/nt/cacls.html --- cacls syntax
http://support.microsoft.com/default.aspx?scid=kb;en-us;308418 -- managing
file/folder permissions
http://support.microsoft.com/default.aspx?scid=kb;EN-US;223316 --- EFS
best practices.
> Hi,
>
> Caveat: I have no idea how this cool stuff works.
>
> I have MS Powerpoint presentations I want to have someone show for me
> in my absence. However, I'm not willing to share!
>
> I can convert the PP into a .exe file, so my specific needs are:
>
> 1. Seperate user and administrator passwords
> 2. User password is only good for 1-2 file showings
> 3. File becomes unusable after a set amount of time.
>
> Any suggestions?
>
> Thanks,
>
> CR
>
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