Domain Trust Selective Authentication

External trusts are not transitive.

Domain trust selective authentication. Make the global group in domain b a member of the local group in domain a. Selective authentication in a forest trust enables you to limit which users and groups from the trusted domain are able to authenticate. The forest trust is the only true security boundary and with selective authentication it becomes a zero trust model meaning these external accounts have zero permissions unless explicitly granted. Since selective authentication is turned on they will not be able to access the directory on any domain controllers in the trusted domain.

Right click the domain that you wish to configure and click properties. Select the authentication tab. You can configure external trusts to connect to windows 2000 server and windows nt 4 domains. Right click on the ou containing the systems you want to allow and select properties.

In enter the object names to select type the name of the user object or group object for which you want to grant access to this resource computer and then click ok. Click on the trusts tab. To configure selective authentication on an existing trust. For each outgoing forest trust right click the trust item and select properties.

Credentials will need to be entered by an administrator of the other organization when yes validate the incoming trust is selected. Add the domain local group and select allowed to authenticate checkbox. Select the appropriate type of authentication and then click next. In the security tab click advanced.

View this best answer in the replies below. Be sure to use fully qualified domain names for both organizations in the trust. When i try and add groups from the trusted domain i am prompted to authenticate with an account from that domain. Select the allow check box next to the allowed to authenticate permission and then click ok.

The workaround is to establish the trust with forest wide authentication first. Select the selective authentication option. As we are two separate organisations we are using the selective authentication option when creating the trust so that we can limit who from the trusted domain has access to our domain recources. An administrator from fabrikam and contoso must enter credentials to validate the incoming direction of trust.

It may be necessary to configure the allowed to authenticate permission on resources in the trusting domain. Give right to authenticate to kerberos account on each domain. Figure 3 10 the outgoing trust authentication level local domain page provides two choices of authentication scope for users in the trusted domain. Open the active directory domains and trusts snap in.

Then create a domain local group for the admins in the trusted domain and add those admins to the domain local group. Domain users have implied permissions by design. An external trust is a trust between domains in different forests. Click the authentication tab and then click the selective authentication radio button.

Right click the domain name in the left pane and select properties.