Robbie Allen

Robbie Allen is a technical leader at Cisco Systems and a Windows Server Directory Services MVP. He is the author of Active Directory Cookbook (O’Reilly & Associates).

Articles by Robbie Allen
5 Steps to a Secured Active Directory
These 5 steps can significantly help secure your overall AD infrastructure. Even better, they don’t cost much to implement.
Design Dictates Security
The simpler you can make your AD design, the better off you'll be, especially when it comes to security.
5 Must-Have AD Tools 10
Five command-line tools—AdFind, AdMod, OldCmp, Dsrevoke, and AdRestore—can help you efficiently manage your AD environment.
Windows Server 2003 AD Quotas
Windows 2003 has a new AD quotas feature that lets you limit the number of objects a user can create.
WKGUID Binding
Learn how to use WKGUID binding and how to change the default WKBIND containers in Windows 2003.
Searching for Tombstones 11
Find out how to search for deleted objects in Windows 2003 AD.
AD Tombstone Objects 5
Windows 2003 lets you restore deleted objects in AD. Find out the basics of AD's tombstoning process and how to bring deleted objects back from the dead.
Enumerating Nested Group Membership 3
Nested groups give you flexibility but also add complexity. A simple script takes the legwork out of drilling down through nested-group membership.
Using LDIF Files to Extend the AD Schema
You can use the Perl Net::LDAP modules not only to import LDIF files in the AD schema but also to verify schema extensions and reduce the potential for errors during the import.
Using LDAP Controls with Net::LDAP
LDAP controls add functionality beyond the standard LDAP operations.
Querying and Updating AD, Part 2
Using the Net::LDAP methods, you can add, delete, modify, rename, and move objects in AD.
Querying and Updating AD, Part 1 4
With the Net::LDAP Perl modules, you can write LDAP-enabled scripts to query and update AD from both Windows and non-Windows platforms.
Your Mission: Delete from the AD Schema 2
You've probably been led to believe that deleting classes and attributes from the AD schema is impossible. This article dispels the myth by showing you how to enable schema deletions and what precautions you must take before doing so.
Query and Update DNS
If you understand the structure of DNS and the basics of how to use the Perl Net::DNS modules, you can write scripts that find all the DCs in a site or domain, find all the GC servers in a forest, and update DNS when you bring new servers online.
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April 2014 - The architectural components related to Hyper-V networking in System Center Virtual Machine Manager 2012 R2 can be confusing. Walk through all the VMM networking architectural components and how to use them.

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