Re: EFS not secure on LAN

From: David Cross [MS] (dcross_at_online.microsoft.com)
Date: 07/31/03


Date: Thu, 31 Jul 2003 05:24:11 -0700


IN windows 2000, the EFS cache can only be cleared with a reboot. In
Windows XP and above, the cache can be cleared with a user logoff.

-- 
David B. Cross [MS]
--
This posting is provided "AS IS" with no warranties, and confers no rights.
http://support.microsoft.com
"Rob Rohrbough" <Rob_RSD@yahoo.com> wrote in message
news:0bce01c3570f$23a8b210$7d02280a@phx.gbl...
> Steven,
>
> Thanks for your reply.  They can see the actual data.  I
> did play around with the NTFS file permissions and was
> able to restrict access to directories by share.  It
> appears that, if you can gain access to a share up the
> hierarchy, sub-folders will appear as well.  That appears
> to be different than my experience with different users on
> the same machine.
>
> Anyway, after rebooting, the lack of a certificate kept
> everyone, including the owner, from seeing the data in the
> files.  Apparently there is some kind of cache working
> that needs to be cleared.  It would be nice if there is a
> less-severe way of clearing the cache.  You have any ideas?
>
> Thanks again,
>
> Rob
>
>
> >-----Original Message-----
> >      They can see the files or they can see the actual
> data? Check ntfs
> >advanced permissions also to see if any users or groups
> exist there. Make
> >sure that just the user you want is included in the ntfs
> permissions and
> >system if it is there,  no one else - no everyone, users,
> power users,
> >guest, etc. Double check that the permissions assigned to
> the folder have
> >actually propagated down to the individual files. Check
> the properties of
> >the files to make sure they are in fact encrypted and use
> the cipher utility
> >in that folder to see if it reports the same. If network
> users have proper
> >ntfs/share permissions, they may be able to "see" the
> encrypted files but
> >not the file contents if they are in fact encrypted they
> would get an access
> >denied message when trying to access a file.  You may
> also want to
> >reconsider sharing a whole drive, though that is not the
> problem with your
> >EFS.--- Steve
> >
> >http://support.microsoft.com/default.aspx?scid=kb;en-
> us;298009
> >http://support.microsoft.com/default.aspx?scid=kb;EN-
> US;223316
> >
> >"Rob Rohrbough" <Rob_RSD@yahoo.com> wrote in message
> >news:03af01c356e5$665657e0$a501280a@phx.gbl...
> >> I have Win2k pro on a workgroup LAN.  I have marked a
> >> directory as secure and removed all permissions but the
> >> owner's.  When I log into the computer with another user
> >> name, the folder is not accessible to that user.
> >>
> >> However, that directory is on a drive that is shared
> with
> >> other computers on my peer-to-peer LAN.  Users on any
> >> WinNT-based machine can see the encrypted data; users on
> >> Win0x-based machines are restricted fromt the directory.
> >>
> >> I have removed the certificate from the system.
> >>
> >> What am I doing wrong?
> >>
> >> TIA,
> >>
> >> Rob
> >
> >
> >.
> >


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