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NTFS Permission Issue on network share

Posted on 2015-02-19
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Last Modified: 2015-02-20
Greetings.

We have a network share, Users ... mapped as "U" drive for end users.
It's an iSCSI mapped drive on a Windows Server 2008R2 system.

The "share" is permissioned fine .... Everyone "Full"

The NTFS permissions are as follows:
-System (Full)
-Domain Admins (Full)
-Domain Users (List)

Each subfolder is permissioned only with System (Full), Domain Admins (Full), and the particular user (Full)

Every so often ... random, but maybe once or twice a year ... Domain Users, and thus the "List" permission, disappears from the root.  I do not know why this is occurring.  I am the only Domain Admin in the joint.

This is generally not an issue, because the U: drive is mapped directly to the subfolder.

This *is* an issue when some of our users need to use our web-based SSL VPN, which maps the root.  Users then browse to their own folder.  Without "List", they get an error even accessing the root.

Any ideas ?  Maybe VSS or some other process is removing Domain Users from the root.

Thanks.
-Stephen
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Question by:lapavoni
4 Comments
 
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Assisted Solution

by:Mahesh
Mahesh earned 250 total points
ID: 40620918
As far as I know there is no process designed to remove existing user access from NTFS \ Share ACL

Check if you have any schedule task runs which can call utilities like ICACLs \ Subinacl \ SetAcl and removes those permissions
OR may be somebody manually do that

Above powerful utilities are able to do that

Might be you should have any standard user \ group full control permissions on share root and they might removed it accidently
U can change those permissions from full control to modify and see..
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LVL 24

Expert Comment

by:Lionel MM
ID: 40621885
I can only tel you that this happens to me too, it is very frustrating and I have been dealing with it on one of my clients servers in particular and I am the only Admin too. I too cannot find a cause or reason so although I can't offer a solution, it is not unique to you.
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LVL 24

Accepted Solution

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Coralon earned 250 total points
ID: 40622371
I would turn on auditing on that share looking for the permissions change on the object.  You can add a script to the system to sweep the eventlog frequently (say once a minute) and have it email you when the correct event occurs.  Be sure that you do *not* set that auditing permission to inherit, or you will be flooded with useless events.

Coralon
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Author Closing Comment

by:lapavoni
ID: 40622374
I had one task scheduled for a non-existent utility that used to monitor large file transfers. Don't think that caused the problem. I can enable auditing and wait a few months to see if/when it recurs :-)   Thanks, both.
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