How do you create a domain trust?
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Open the Active Directory Domains and Trusts administrative tool. In the console tree, right-click your domain, and then click Properties. On the Trusts tab, click New Trust, and then click Next. On the Trust Name page, type the DNS name of the domain to which you want to create a trust, and then click Next.
How do you add an external trust to a domain?
Creating an external trust
- Open Active Directory Domains and Trusts.
- In the console tree, right-click the domain node for the domain that you want to establish a trust with, and then click Properties.
- On the Trusts tab, click the New Trust, and then click Next.
How do you trust relationships between domains?

Open the DNS manager on the PDC of a.com, right-click “Conditional Forwarders”> “New Conditional Forwarders”> enter the other party’s domain name and IP address. After we setting up conditional forwarder or secondary zone, we can refer to the link Tim provided to create forest/domain trust.
Which tool you will use to create new trust between two domains?
Establishes, verifies, or resets a trust relationship between domains. Netdom is a command-line tool that is built into Windows Server 2008 and Windows Server 2008 R2. It is available if you have the Active Directory Domain Services (AD DS) server role installed.

What ports are needed for a domain trust?
How can I create a domain trust through a firewall?
- PORT 135 (TCP or UDP) for Remote Procedure Call(RPC)Service.
- PORT 137 (UDP) for NetBIOS Name Service.
- PORT 138 (UDP) for NetBIOS datagram (Browsing)
- PORT 139 (TCP) for NetBIOS session (NET USE)
- ALL PORTS above 1024 for RPC Communication.
How do I install Active Directory Domains and Trusts?
From the Start menu, select Settings > Apps. Click the hyperlink on the right side labeled Manage Optional Features and then click the button to Add feature. Select RSAT: Active Directory Domain Services and Lightweight Directory Tools. Click Install.
How do you create a external trust between two domains of a forest?
Creating incoming trust in DC1.DomainA.com
- Open Active Directory Domains and Trusts.
- In the console tree, right-click the domain for which you want to establish a trust, and then click Properties.
- On the Trusts tab, click New Trust, and then click Next.
When should an external trust be created?
External trusts are sometimes necessary when users need access to resources in a Windows NT 4.0 domain or in a domain that is located in a separate forest that is not joined by a forest trust, as shown in the following illustration.
How do I verify a domain trust?
Using the command line
- Open Active Directory Domains and Trusts.
- Open the properties of the domain that contains the trust you are looking to verify.
- Under the trusts tab, select the trust and select properties.
- Click the validate button.
Will creating forest trust between two domains?
A transitive trust is one that extends beyond the original trusting domains. For example, if you have a trust between two domain forests and that trust is transitive, all of the domains in each of the forests trust each other. Forest trusts are transitive by default.
How do you create a two way trust?
Create Two-Way Forest Trust in Windows Server 2008 R2
- Open Active Directory Domains and Trusts.
- Right-click the domain name and click properties to open the properties of mustbegeek.com domain.
- Select Trusts tab.
- In the trust name, type the name of the domain.
- Choose forest trust.
- Choose two-way trust.