How to prevent Domain Users from Authenticating to a WDS Share

By default, authenticated users can connect to a WDS share and read the .wim files. When a user performs a PXE boot using the boot image provided by WDS, their domain credentials can be used for authentication. This is the default behavior for the share.

If this is not desirable in your environment, create a new security group that contains the users that you want to be able to access the share. Grant this group the ability (at minimum) to Read & Execute, List Folder Contents, and Read. Then remove the Authenticated Users group.

Once this is completed, if a user attempts to authenticate to the WDS server, this is what they see:

The user will not be presented with any images.

If the user is in the correct security group, they will get a listing of the available images to select from.

Comments

Adding a Comment to a GPO with PowerShell

As I'm writing this article, I'm also writing a customization for a PowerShell course I'm teaching next week in Phoenix. This customization deals with Group Policy and PowerShell. For those of you who attend my classes may already know this, but I sit their and try to ask the questions to myself that others may ask as I present the material. I finished up my customization a few hours ago and then I realized that I did not add in how to put a comment on a GPO. This is a feature that many Group Policy Administrators may not be aware of. This past summer I attended a presentation at TechEd on Group Policy. One organization in the crowd had over 5,000 Group Policies. In an environment like that, the comment section can be priceless. I always like to write in the comment section why I created the policy so I know its purpose next week after I've completed 50 other tasks and can't remember what I did 5 minutes ago. In the Group Policy module for PowerShell V3, th

Return duplicate values from a collection with PowerShell

If you have a collection of objects and you want to remove any duplicate items, it is fairly simple. # Create a collection with duplicate values $Set1 = 1 , 1 , 2 , 2 , 3 , 4 , 5 , 6 , 7 , 1 , 2 # Remove the duplicate values. $Set1 | Select-Object -Unique 1 2 3 4 5 6 7 What if you want only the duplicate values and nothing else? # Create a collection with duplicate values $Set1 = 1 , 1 , 2 , 2 , 3 , 4 , 5 , 6 , 7 , 1 , 2 #Create a second collection with duplicate values removed. $Set2 = $Set1 | Select-Object -Unique # Return only the duplicate values. ( Compare-Object -ReferenceObject $Set2 -DifferenceObject $Set1 ) . InputObject | Select-Object – Unique 1 2 This works with objects as well as numbers. The first command creates a collection with 2 duplicates of both 1 and 2. The second command creates another collection with the duplicates filtered out. The Compare-Object cmdlet will first find items that are diffe

How to list all the AD LDS instances on a server

AD LDS allows you to provide directory services to applications that are free of the confines of Active Directory. To list all the AD LDS instances on a server, follow this procedure: Log into the server in question Open a command prompt. Type dsdbutil and press Enter Type List Instances and press Enter . You will receive a list of the instance name, both the LDAP and SSL port numbers, the location of the database, and its status.

Jason Yoder, MCT

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