Introduction to Domain and Forest Trusts

By using Windows Server 2003 domain and forest trusts, service administrators can create or extend collaborative relationships between two or more domains or forests. Windows Server 2003 domains and forests can also trust Kerberos realms and other Windows Server 2003 forests, as well as Microsoft Windows® 2000 domains and Windows NT® 4.0 domains.

When a trust exists between two domains, the authentication mechanisms for each domain trust the authentications coming from the other domain. Trusts help to provide controlled access to shared resources in a resource domain (the trusting domain) by verifying that incoming authentication requests come from a trusted authority (the trusted domain). In this way, trusts act as bridges that allow only validated authentication requests to travel between domains.

How a specific trust passes authentication requests depends on how it is configured. Trust relationships can be one-way, providing access from the trusted domain to resources in the trusting domain, or two-way, providing access from each domain to resources in the other domain. Trusts are also either nontransitive, in which case a trust exists only between the two trust partner domains, or transitive, in which case a trust automatically extends to any other domains that either of the partners trusts.

In some cases, trust relationships are established automatically when domains are created; in other cases, administrators must choose a type of trust and explicitly establish the appropriate relationships. The specific types of trusts that are used and the structure of the resulting trust relationships in a given trust implementation depend on such factors as how Active Directory is organized and whether different versions of Windows coexist on the network.

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Before you begin messing with your system

The registry is no child's play

Modifying the registry can cause serious problems that may require you to reinstall your operating system. I cannot guarantee that problems resulting from modifications to the registry can be solved nor do I provide technical support for such issues if they occur. Use the information provided at your own risk.

As always, your tips and recommendations are welcome.

Before you dig in

Tweaking isn't for everyone. If you're using XP or Windows 2000 and you like it the way it is, leave things alone. Some changes are hard to undo, so don't make needless changes to your operating system. Likewise, weigh each suggestion against the likely benefit you'll gain. Don't tear apart a working operating system or subsystem unless you believe the results are truly worth it.

Anyway, before you do any significant tweaking work on any operating system, always make a full backup. You need to be able to restore things to the way they were before, if a change doesn't work out the way you intended.

In Windows XP, it's also a good idea to make a "Restore Point" before each and every change. System Restore can roll back many minor system changes without requiring you to restore your full backup.

Also, it makes no sense to try to tune and tweak an operating system that's fundamentally incomplete or broken. I suggest to always try to use a clean installation of the OS, and never rely on upgrades or other dubious installations. You should always check to ensure all your hardware is set up and running properly. In addition, use Windows Update to download and install all current patches and driver updates.

Currently, no “undo” function exists for deletions made within the Windows XP registry. The registry editor (Regedit.exe) prompts the user to confirm the deletions. When a registry key is being deleted, the message does not include the name of the key being deleted. Check your selection carefully before proceeding with any deletion.

By the way, The Windows Registry Guide, formerly RegEdit.com, provides an extensive range of registry tweaks, tricks & hacks for optimizing, enhancing and securing the Windows operating system. They offer hundreds of online tips and a cool offline .CHM file to download.

 


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