Re: privilege timeout

From: Roger Abell (mvpNOSpam_at_asu.edu)
Date: 12/30/04 

Date: Wed, 29 Dec 2004 23:02:36 -0700

In addition to both valid responses so far, I believe that
you should address with those specifying this requirement
that it is, although not totally useless, window-dressing of
sorts. The client machine security, and/or digital rights
contraints on the documents, should be addressed.
You can go through hoops trying to effect object of your
initial posting but still have not addressed fact that they
can copy all docs to which they have access onto their
desktop/laptop and then walk off leaving that client and
the sensitive docs available to those that walk past. 

-- 
Roger Abell
Microsoft MVP (Windows  Security)
MCSE (W2k3,W2k,Nt4)  MCDBA
"Chris" <Chris@discussions.microsoft.com> wrote in message
news:FF2890B6-A2A3-4D7A-9419-C48EFA35B647@microsoft.com...
> I am trying to configure a handful of Windows file servers to timeout user
> connections (like mapped drives) after a certain amount of idle time and
make
> the user reauthenticate after that time is up. This is trying to mitigate
the
> problem where a user authenticates to a sensitive file server and then
walks
> away from the computer.  I do not want to have their computer
automatically
> lock itself...I just want that session to the sensitive file server to
> timeout and require reauthentication.
>
> My first thought was to have the user's kerberos tickets expire if they're
> logged on as a domain user.  I was able to change the domain GPO to
> successfully get the tickets expiring, however, the session tickets were
> automatically reissued if the user tried to connect to the same file
server
> after the ticket expired.  Is this due to any sort of credentials caching
> that can be disabled? (sort of like q299656, perhaps?)  Again, my goal is
to
> have these session tickets expire and make the user reauthenticate to
> generate them again, but I do not want the user to get logged out of their
> local domain login session.
>
> If the above problem could be solved that would at least solve some of my
> problems.  However, my corporation needs to be able to support employee's
> accessing these file servers from personal laptops that are not part of
the
> domain either locally or remotely through VPN.  I understand that in these
> cases NTLMv2 is used instead of Kerberos for authentication.  Is there
anyway
> to get Kerberos authentication to work in these situations (the user is
> logging on from a non-domain computer, though they will authenticate using
> their domain user account) using either built-in Windows Kerberos support
or
> some third party option (MIT's Leash for example)?  If not, is there
anyway
> to get sessions authenticated using NTLMv2 to timeout and require
> reauthentication?
>
> Thanks in advance for your help!
>
> Chris
>

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