One-way trusts in Windows and Windows Server are just the same as one-way trusts in Windows NT and are used in Windows or Windows Server in a handful of situations. A couple of the most common situations are described below. First, one-way trusts are often used when new trust relationships must be established with down-level domains, such as Windows NT 4 domains.
Since down-level domains cannot participate in Windows and Windows Server transitive trust environments such as trees or forests , one-way trusts must be established to enable trust relationships to occur between a Windows or a Windows Server domain and a down-level Windows NT domain.
Throughout the course of a migration from Windows NT 4 to Windows or Windows Server , trust relationships that you have established are honored as the migration process moves toward completion, until the time when all domains are Windows or Windows Server and the transitive trust environment is established.
There's a whole lot more detail devoted to the migration process in Chapter 11, "Migrating to Active Directory Services. You can use one-way trust relationships between domains in different Windows or Windows Server forests to isolate the trust relationship to the domain with which the relationship is created and maintained, rather than creating a trust relationship that affects the entire forest.
Let me clarify with an example. Imagine your organization has a manufacturing division and a sales division. The manufacturing division wants to share some of its process information stored on servers that reside in its Windows or Windows Server domain with a standards body.
The sales division, however, wants to keep the sensitive sales and marketing information that it stores on servers in its domain private from the standards body. Perhaps its sales are so good that the standards body wants to thwart them by crying, "Monopoly! To provide the necessary access to the standards body, you establish a one-way trust between the manufacturing domain and the standards body's domain, and since one-way trusts aren't transitive, the trust relationship is established only between the two participating domains.
Also, since the trusting domain is the manufacturing domain, none of the resources in the standards body's domain would be available to users in the manufacturing domain. Of course, in either of the one-way trust scenarios outlined here, you could create a two-way trust out of two separate one-way trust relationships.
Cross-link trusts are used to increase performance. With cross-link trusts, a virtual trust-verification bridge is created within the tree or forest hierarchy, enabling faster trust relationship confirmations or denials to be achieved. That's good for a short version of the explanation, but to really understand how and why cross-link trusts are used, you first need to understand how interdomain authentications are handled in Windows and Windows Server When a Windows or Windows Server domain needs to authenticate a user or otherwise verify an authentication request to a resource that does not reside in its own domain, it does so in a similar fashion to DNS queries.
Windows and Windows Server first determine whether the resource is located in the domain in which the request is being made. If the resource is not located in the local domain, the domain controller specifically, the Key Distribution Service [KDC] on the domain controller passes the client a referral to a domain controller in the next domain in the hierarchy up or down, as appropriate.
The next domain controller continues with this "local resource" check until the domain in which the resource resides is reached. This referral process is explained in detail in Chapter 8. While this "walking of the domain tree" functions just fine, that virtual walking up through the domain hierarchy takes time, and taking time impacts query response performance.
To put this into terms that are perhaps more readily understandable, consider the following crisis: You're at an airport whose two terminal wings form a V. Terminal A inhabits the left side of the V, and Terminal B inhabits the right. The gates are numbered sequentially, such that both Terminal A's and Terminal B's Gate 1s are near the base of the V where the two terminals are connected and both Gate 15s are at the far end of the V.
All gates connect to the inside of the V. You've hurried to catch your flight, and arrive at Terminal A Gate 15 at the far end of the V only to realize that your flight is actually leaving from Terminal B.
You look out the window and can see your airplane at Terminal B Gate 15, but in order for you to get to that gate you must walk OK, run all the way back up Terminal A to the base of the V and then jog by now, you're tired all the way down Terminal B to get to its Gate just in time to watch your flight leave without you.
As you sit in the waiting area, biding your time for the two hours until the next flight becomes available and staring across the V to Terminal A, from which you thought your flight was departing, you come up with a great idea: build a sky bridge between the ends of the terminals so that passengers such as yourself can quickly get from Terminal A Gate 15 to Terminal B Gate Does this make sense?
It makes sense only if there's lots of traffic going between the terminals' Gate 15s. Similarly, cross-link trusts can serve as an authentication bridge between domains that are logically distant from each other in a forest or tree hierarchy and have a significant amount of authentication traffic.
What amounts to lots of authentication traffic? Consider two branches of a Windows or Windows Server domain tree. The first branch is made up of domains A, B, C, and D. The second branch is made up of domains A, M, N, and P. Hopefully, you'll pick a FQDN name that is in the contigious namespace as the root domain. If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem.
Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.
Please note: Do not post advertisements, offensive material, profanity, or personal attacks. Please remember to be considerate of other members. All submitted content is subject to our Terms Of Use. I have tried everything, and it seems to be going great. Obviously that's not what I want. Does anyone know how I can fix this? Share Flag. If you need to enable anonymous access for users to read domain information, select Permissions compatible with pre-Windows server operating systems.
If you do not need to enable anonymous access, select Permissions compatible only with Windows or Windows Server operating systems. Choose the desired setting and click Next to continue.
The previous Figure 4. The password entered here is used when the domain controller must be booted into Directory Services Restore mode for Active Directory restoration and maintenance. Type the desired Restore Mode password and click Next to continue.
Verify that you have made the correct selections and click Next to start the process of creating a child domain. After this is complete, you are prompted to end the Active Directory Installation Wizard as previously shown in Figure 4.
Win AD - child domain : panay. Since this is subdomain with different domain name to primary. Are my whole entire AD are also be deleted when i thick the "this is the last domain controller for this domain"? Since the subdomain that we will decommission is not part of new domain which is AD domain. Attachments: Up to 10 attachments including images can be used with a maximum of 3.
We are checking in to see if the provided information was helpful. If the replies as above are helpful, we would appreciate you to mark them as answers. I am checking how the issue is going, if you still have any questions, please feel free to contact us. No there is no impact on parent domain. You have to be sure that is the last domain controller in the child domain before checking this option. The child domain panay.
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