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Post Info TOPIC: How does the "Protect container/object from Accidental Deletion" feature work in Windows Server 2008?


Member

Posts: 9
Date: Jun 16, 2011
How does the "Protect container/object from Accidental Deletion" feature work in Windows Server 2008?
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Hello,

I would be obliged if someone could explain for me how exactly the Protect container/object from Accidental Deletion feature works in Windows Server 2008?

I am interested to know because we used to have scripts written to find and delete specific OU accounts, but in one of our domains running Windows Server 2008, these scripts return access denied errors.

One of my colleagues suggested that it might have to do with this feature in Windows Server 2008, so I would be interested in understanding how this feature works so we can, if needed, modify our scripts.

Thank you for obliging me with your response. It is much appreciated.

Antoine



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Member

Posts: 18
Date: Jun 18, 2011
RE: How does the "Protect container/object from Accidental Deletion" feature work in Windows Server 2008?
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Antoine,

Have you ever put in a week's work and made it look like it was a month's work?

The "Protect container/object from Accidental Deletion" feature is a perfect example of what Microsoft's seems to have done here. I mean, if you analyze what happens under the hood, it is clearly evident that most of us could have done this by ourselves.

So let me share with you exactly how this feature works. It appears that Microsoft may gotten a lot of feedback from customers saying that it is too easy to accidentally delete objects in Active Directory, especially OUs, and that it would be beneficial if they made it harder to delete objects.

So what does Microsoft do? They simply modify the default security in the Active Directory Schema on Organizational-Unit objects by adding an permission that denies Everyone the Standard Delete right on the object.

Now if you know how permissions work in Active Directory, then you know that a directly applied DENY permission takes precedence over all other permissions, and so it has the effect of by default denying everyone the ability to delete the account.

The only other thing they seemed to have done is tweaked the UI a bit to expose a little check-box which toggles the presence of this permission on the object.

So, if you want to delete the object, you go un-check the box, which has the effect of removing this permission, and then you can proceed to delete the object based on your standard permissions.

It certainly is a really smart hack to do to accomplish this capability for very little effort.

One downside of this is that if you have any automated management tools that do cleanups and or deletions, you'll encounter a hiccup each time they try to delete an OU because you'll have to fo modify these permissions.

But it does accomplish the intended objective, so towards that end, it works like a charm.

I hope this helped you get a better understanding of  this feature works.

Nathan,



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Member

Posts: 9
Date: Jun 29, 2012
RE: How does the "Protect container/object from Accidental Deletion" feature work in Windows Server 2008?
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Nathan,

What a wonderful and simple explanation you have provided, of this feature. Thanks alot - I completely understand it now! 

By the way, the reason I asked this question, is because it came up when we trying to find out who all can delete OUs in our Active Directory.

You seem to be very knowledgeable in the subject, so I thought I'd ask you if you know if there is any way to find out who can delete OUs in our Active Directory?

Thanks again, in advance, and for such a good explanation. Nice work!

-Antoine



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Member

Posts: 18
Date: Jul 21, 2012
RE: How does the "Protect container/object from Accidental Deletion" feature work in Windows Server 2008?
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Hello Antoine,

In order to find out who can delete OUs in your Active Directory, you'll have to basically determine who all have effective delete rights on each of your OUs.

I should mention that this is NOT the same as finding out who has what delete permissions in the ACL of the OU. There are many tools that can elp you find out who has what delete permissions but that's not what you need to find out to know who can actually delete your OUs.

Basically, you need to look at all the security permissions on your OUs, and then determine effective access on each of the OUs. Keep in mind that you may will also need to include Delete Child permissions, and so you may eed to determine effective access on child objects of the OU as well.

This can be a real pain, and very time consuming task to perform, each time you need to find this out for each of your OUs.

An alternative to doing this manually is to use automated tools that can do all the hard work for you, so you don't need to waste your time or effort. However, except one, there are no tools available that can make this determination, because its very complicated.

Fortunately, there is at least one tool, and its called Gold Finger for Active Directory. Its basically an Active Directory security analysis/audit tool for  and its got a capability called Effective Delegated Access Reports.

One of the reports is "Who can delete OUs" and that I think should be able to help you fulfill your objective very easily.

I believe its online at - www.paramountdefenses.com/goldfinger

Good luck.

Nate.



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