?
Solved

ADFS 3.0 with a One-Way Forest Trust

Posted on 2016-10-05
1
Medium Priority
?
418 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 4

Accepted Solution

by:
Belal Khallad earned 2000 total points
ID: 41831235
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

Are your AD admin tools letting you down?

Managing Active Directory can get complicated.  Often, the native tools for managing AD are just not up to the task.  The largest Active Directory installations in the world have relied on one tool to manage their day-to-day administration tasks: Hyena. Start your trial today.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This process allows computer passwords to be managed and secured without using LAPS. This is an improvement on an existing process, enhanced to store password encrypted, instead of clear-text files within SQL
Compliance and data security require steps be taken to prevent unauthorized users from copying data.  Here's one method to prevent data theft via USB drives (and writable optical media).
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …
Attackers love to prey on accounts that have privileges. Reducing privileged accounts and protecting privileged accounts therefore is paramount. Users, groups, and service accounts need to be protected to help protect the entire Active Directory …
Suggested Courses

777 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