GPO Configuration for Atria

GPO Configuration for Atria

Overview

The default provisioning for Atria configures permissions within Active Directory to support the assignment of GPO’s against Atria restricted customer OU’s



The following is an example structure that supports the GPO assignment:

 

GPOAccess Groups are assigned the following permissions on the OU's:


PermissionDefinitionActive Directory Definition
Deny - List ContentsPrevents viewing of the contents of the OU and its descendant objectsThis permission prevents users from seeing the contents of the folder. They will not be able to see any files or subfolders within the folder.
Allow - List ObjectAllows viewing of the OU itselfThis permission allows users to see the folder, but not its contents. They will be able to see the folder name and that it exists, but will not be able to access any of the files or subfolders within it.
Allow - Read all propertiesAllows reading of all properties of the OUThis permission allows users to read the properties of the folder, such as its name, creation date, and other metadata. They will not be able to make any changes to the folder or its properties.


Proxy ??? User groups are assigned the following permissions against the respective Customer OU:

PermissionDefinitionActive Directory Definition
Allow - ReadAllows reading of the OU and its descendant objectsThis permission allows users to read the contents of the folder and all subfolders within it. They will be able to see the names and properties of all files and folders, but will not be able to make any changes to them.

The main point in this structure is that the GPOAccess groups provide the traversal of “Read all properties” and “List object” all the way through the “Broken inheritance” OU structure to the customers objects.  Above the Atria Customer OU’s this permission is provided by the “Authenticated Users” group.  This is needed in order for the GPO to be applied to the user objects

 

With the change in security that Microsoft applied with MS16-072, the Computer object needs to have:

·        - “Read” access to the GPO

·        - “Read” access to the user object

 

Applying the Read access on the GPO needs to be done manually

The simplest way to give the Computer object read access on the user objects is to add the Computer object to the “Proxy ??? Users” group for the customer


It is also recommended that when assigning the GPO to the users with the Security Filtering, that the assignment be made to the “Proxy ??? Users” group.


If more restrictive filtering is needed, then a group be created to contain the specific users, then the more restrictive groups be added to the “Proxy ??? Users” group.

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