Trust relationships between domains on Windows - IBM DB2 for Linux, UNIX, and Windows
In the example above x is the trusting domain, and y is the trusted domain. Also the above is a one-way trust relationship, i.e. while domain y users can use. Those of you who are upgrading from Windows NT will be familiar with the trust relationships used to allow users in one domain to access. How to: FIX: the trust relationship between this workstation and the primary Here is how to fix it without leaving and rejoining the domain.
When the machine is reset, it is missing all of the automatic password changes that it executed against the domain controller during the intervening months. The password changes are required to maintain the security integrity of the domain. Support blogs and Microsoft will generally tell you to rejoin the domain to restore the trust relationship. Another option they will give is to delete the computer object and recreate it without a password and rejoin.
Microsoft support article on the topic: Recently, when I ran into this problem, the virtual machine that reset was an enterprise certificate authority joined to my test domain. Well, guess what, Microsoft will not allow you to rename or unjoin a computer that is a certificate authority—the button in the computer property page is greyed out. Powershell v3 shipped with a cmdlet for resetting computer passwords.
For those with Powershell skills, this is a much better option. Powershell v3 ships with the latest version of Windows and can be downloaded from Microsoft: You can fix this by opening Powershell with administrative rights and running Update-Help.
DON’T REJOIN TO FIX: The trust relationship between this workstation and the primary domain failed
You can use the Get-Credential cmdlet for a secure way to generate a PSCredential, which can be stored in a variable and used in a script. The Server parameter is the domain controller to use when setting the machine account password. A better fix Just change your computer password using netdom. You need to be able to get onto the machine. I hope you remember the password. Another option is to unplug the machine from the network and log in with domain user. You will be able to do disconnected authentication, but in the case of a reset machine, remember that you may have to use an old password.
You need to make sure you have netdom. Where you get netdom. Windows Server and Windows Server R2 ship with netdom. The use of forest trusts offers several benefits: They simplify resource management between forests by reducing the number of external trusts needed for resource sharing.
They provide a wider scope of UPN authentications, which can be used across the trusting forests. They provide increased administrative flexibility by enabling administrators to split collaborative delegation efforts with administrators in other forests. Directory replication is isolated within each forest. Forestwide configuration modifications such as adding new domains or modifying the schema affect only the forest to which they apply, and not trusting forests.
They provide greater trustworthiness of authorization data. Administrators can use both the Kerberos and NTLM authentication protocols when authorization data is transferred between forests. Realm trusts These are one-way nontransitive trusts that you can set up between an Active Directory domain and a Kerberos V5 realm such as found in Unix and MIT implementations.
Establishing Trust Relationships This section examines creating two types of trust relationships with external forests: We then look at the shortcut trust, which is the only configurable type of trust relationship between two domains in the same forest. Before you begin to create trust relationships, you need to be aware of several prerequisites: You must be a member of the Enterprise Admins group or the Domain Admins group in the forest root domain.
New to Windows Serveryou can also be a member of the Incoming Forest Trust Builders group on the forest root domain. This group has the rights to create one-way, incoming forest trusts to the forest root domain. If you hold this level of membership in both forests, you can set up both sides of an interforest trust at the same time. You must ensure that DNS is properly configured so that the forests can recognize each other.
In the case of a forest trust, both forests must be operating at the Windows Server forest functional level. Windows Server provides the New Trust Wizard to simplify the creation of all types of trust relationships. The following sections show you how to create these trust relationships. Know the variations of the procedures so that you can answer questions about the troubleshooting of problems related to interforest access as they relate to the options available when creating trusts.
In particular, be aware of the differences between the incoming and outgoing trust directions Creating an External Trust Follow Step by Step 3. In the console tree, right-click your domain name and choose Properties to display the Properties dialog box for the domain.
Error: The trust relationship between this workstation and the primary domain failed
Select the Trusts tab. This tab contains fields listing domains trusted by this domain and domains that trust this domain. Initially these fields are blank, as in Figure 3. Click Next, and on the Trust Name page, type the name of the domain with which you want to create a trust relationship see Figure 3. The Trust Type page, shown in Figure 3.MCITP 70-640: Active Directory Trusts
Select External Trust and then click Next. The Direction of Trust page, shown in Figure 3. Two-way Creates a two-way trust. This type of trust allows users in both domains to be authenticated in each other's domain. Users in the other domain cannot be authenticated in your domain. Users in your domain cannot be authenticated in the other domain. Select a choice according to your network requirements and then click Next. The Sides of Trust page, shown in Figure 3. Otherwise, select This Domain Only and then click Next.
You must specify the same password when creating the trust in the other domain. Type and confirm a password that conforms to password security guidelines, click Next, and then skip to step Ensure that you remember this password.
Domain-Wide Authentication This option authenticates users from the trusted domain for all resources in the local domain. Microsoft recommends this option only for trusts within the same organization. Selective Authentication This option does not create any default authentication. You must grant access to each server that users need to access. Microsoft recommends this option for trusts that involve separate organizations, such as contractor relationships. Select the appropriate type of authentication and then click Next.
The Trust Selections Complete page displays a list of the options that you have configured see Figure 3. Review these settings to ensure that you have made the correct selections. If any settings are incorrect, click Back and correct them. The Trust Creation Complete page informs you that the trust relationship was successfully created. Click Next to finish the process. The Confirm Outgoing Trust page asks whether you want to confirm the outgoing trust see Figure 3.
If you have configured the trust from the other side, click Yes, Confirm the Outgoing Trust. The Confirm Incoming Trust page asks whether you want to confirm the incoming trust.
Choices are the same as on the previous page. If you want to confirm this trust, enter a username and password for an administrator account in the other domain. The Completing the New Trust Wizard page verifies the confirmation of the trust from the other side. You are returned to the Trusts tab of the domain's Properties dialog box see Figure 3. The name of the domain with which you configured the trust now appears in one or both of the fields according to the trust type you created.
Click OK to close this dialog box. Creating a Forest Trust Recall that this type of trust can be created only between two Active Directory forests that are both operating at the Windows Server forest functional level. Follow Step by Step 3. Type the name of the forest root domain with which you want to create a trust and then click Next. On the Direction of Trust page, select the appropriate direction for the trust and then click Next.
On the Sides of Trust page, specify whether you want to create the trust for this domain only or for both this domain and the specified domain, and then click Next. If you are creating the trust for both forests, specify a username and password for the specified forest and then click Next.
Error: The trust relationship between this workstation and the primary domain failed
If you are creating the trust for this forest only, specify a trust password, which the administrator in the other forest will need to specify to complete the creation of the trust for her forest. Make a choice and then click Next. The Trust Selections Complete page displays a list of the options that you have configured refer to Figure 3.
The Confirm Outgoing Trust page asks whether you want to confirm the outgoing trust refer to Figure 3. If you want to confirm this trust, enter a username and password for an administrator account in the other forest.
You are returned to the Trusts tab of the domain's Properties dialog box refer to Figure 3. Creating a Shortcut Trust Recall that this type of trust can be created between child domains in the same forest to expedite crossdomain authentication or resource access. On the Direction of Trust page refer to Figure 3.
If you are creating the trust for both domains, specify a username and password for an administrator account in the specified domain.
If you are creating the trust for this domain only, specify a trust password, which the administrator in the other domain will need to specify to complete the creation of the trust for her domain. The Trust Selections Complete page displays a summary of the settings you have entered refer to Figure 3. Click Back if you need to make any changes to these settings. Then click Next to create the trust. Click Next to configure the trust.
The Confirm Outgoing Trust page asks whether you want to confirm the other side of the trust. If you have created both sides of the trust, click Yes. Otherwise, click No and then click Next. The Completing the New Trust Wizard page informs you that you have created the trust.
Click Finish to return to the Trusts tab of the domain's Properties dialog box refer to Figure 3. If you have created only one side of the trust, an administrator in the other domain needs to repeat this procedure to create the trust from her end. She will need to enter the trust password you specified in this procedure.
Realizing that the research necessary to complete this project successfully required a high level of security, management asked the senior network administrator to set up a separate forest in the organization's Windows Server Active Directory design.
For the project to succeed, researchers needed access to certain data stored in the organization's existing forest. Their user accounts would be in the new forest. Users in the existing forest did not need to access data in the research forest.
The administrator had to choose a trust model that would enable the appropriate levels of access. With these needs in mind, the administrator decided to implement a one-way external trust relationship in which the existing forest trusted the research forest. It was then possible to place the researchers who needed access into a group that could be granted access to the appropriate resources in the existing forest. Because the trust relationship was one-way, no access in the opposite direction was possible.
We take a further look at the use of groups to grant crossforest access in Chapter 6, "Implementing User, Computer, and Group Strategies.