Solved

ADFS 3.0 with a One-Way Forest Trust

Posted on 2016-10-05
1
45 Views
Last Modified: 2016-10-10
Dear Experts,

I am hoping for some advice if the below setup is possible. In short ADFS 3.0 is to be used for SSO for a 3rd party internal application across two forests where a one-way trust exists (Forest A trusts Forest B), accounts in both forests require SSO access.

Environment Summary:
Forest A trusts Forest B via a one-way AD trust
Forest B DOES NOT trust Forest A
ADFS host is a member of Forest A
ADFS service account is a member of Forest B
No external access to the ADFS farm is provided or required (No WAP)
3rd party internal application is using SAML 2.0

Scenario:
Users from “Forest B” can authenticate and logon to the 3rd Party application without issue, Users from “Forest A” get IE authentication prompts. When changing the service account used by ADFS to an account in “Forest A” users from “Forest A” can logon successfully but then users from “Forest B” cannot, this is understandable as the service account in “Forest A” has no access to Forest B. However, I can’t understand why this setup would not work when the service account is setup with an account from “Forest B” as that account has access via the trust to Forest A.

Any help is appreciated.
0
Comment
Question by:Box57l
1 Comment
 
LVL 3

Accepted Solution

by:
Belal Khallad earned 500 total points
Comment Utility
Hello there,

The below reference, explain the process and the configuration required to get ADFS to work in a one way trust scenario.
https://blog.rhysgoodwin.com/windows-admin/adfs-2-0-in-a-forest-trust-environment/
0

Featured Post

Backup Your Microsoft Windows Server®

Backup all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

Join & Write a Comment

This article will review the basic installation and configuration for Windows Software Update Services (WSUS) in a Windows 2012 R2 environment.  WSUS is a Microsoft tool that allows administrators to manage and control updates to be approved and ins…
What to do when Windows Update is not working correctly? What tools can I use to detect the cause of the malfunction problem? What does this numeric error code mean? These and other questions that you have been asking in the past are answered here (…
In this Micro Tutorial viewers will learn how to restore single file or folder from Bare Metal backup image of their system. Tutorial shows how to restore files and folders from system backup. Often it is not needed to restore entire system when onl…
This tutorial will walk an individual through the process of installing of Data Protection Manager on a server running Windows Server 2012 R2, including the prerequisites. Microsoft .Net 3.5 is required. To install this feature, go to Server Manager…

771 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now