What is cross-forest authentication?

What is cross-forest authentication?

With cross-forest authentication, you ensure secure access to resources when the user account is in one forest and the computer account is in another forest, and when the user in one forest needs access to network resources in another trusted forest.

What is a cross-forest trust?

A. A feature of Windows Server that enables trust to be automatically managed between multiple Active Directory forests. Cross-Forest Trust is especially helpful for consolidating operations due to mergers and acquisitions.

How does authentication work cross domain?

If the client uses NTLM for authentication, the initial request for authentication goes directly from the client to the resource server in the target domain. This server creates a challenge to which the client responds. The server then sends the user’s response to a domain controller in its computer account domain.

How do you build trust relationship between two forests?

Using a graphical user interface

  1. Open the Active Directory Domains and Trusts snap-in.
  2. In the left pane, right click the forest root domain and select Properties.
  3. Click on the Trusts tab.
  4. Click the New Trust button.
  5. After the New Trust Wizard opens, click Next.
  6. Type the DNS name of the AD forest and click Next.

When do I need a cross forest proxy?

Cross-Forest Authentication. Because IAS uses Active Directory to validate credentials and obtain user and computer account properties, a RADIUS proxy must be placed between the wireless APs and the IAS server computers when the user and computer accounts for wireless client computers and users exist in the following authentication databases:

How does cross forest work in Kerberos authentication?

Local domain controller then checks its database for infomation about any Forest trust which fits suffix of the SPN provided. Once match is found, the global catalog gives a routing hint back. This hint helps to forward request toward the destination forest.

How to use IAS radius for cross forest authentication?

Using IAS RADIUS proxies for cross-forest authentication. The following configuration is for an organization that uses the following: Active Directory domains. Active Directory domains contain the user accounts, passwords, and dial-in properties that each IAS server requires to authenticate user credentials and evaluate authorization.

How to configure the availability service for cross forest?

In cross-forest topologies where all connecting clients are running Outlook, the Availability service is the only method of retrieving free/busy information. You can use the Shell to configure the Availability service for cross-forest topologies. You can’t use the EAC to configure the Availability service for cross-forest topologies.