Do I really need ADFS?

I often hear and read misconceptions on whether or not you should or must deploy an ADFS farm when Office 365 is in the picture. So I will try to give you my version (well it is a collection of feedback from my peers as well), hoping that might help you to sort out your…

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AD Fun Services – List all the members of an ADFS farm

In Windows Server 2012 R2, the ADFS database actually does not keep track of the servers member of the farm. It is a stateless farm were every node happen to share the same database (if a SQL server is used) or the same copy of the database (if it is WID). The only thing stored…

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Q&D – Backup/Restore your ADFS claim rules for Office 365

When it comes to try and fail fast, nothing better than to be able to restore things the way it used to be before you broke everything 🙂 Here are some examples of PowerShell cmdLets you can rule to export your claim rules for the Azure AD Relying Party Trust into files and re-import them…

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AD Fun Services – Track down the source of ADFS lockouts

Tracking down the devices locking out accounts on an ADFS deployment is quite challenging. From an ADDS perspective, lockouts coming from a WAP server will look like they’re come from an ADFS server: Lockouts coming from internal client using Form Based authentication also look like they are coming from the ADFS server itself and not…

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Script to update the Service-Communications SSL certificate

Changing the Service-Communications certificate for the Windows Server 2012 R2 ADFS servers and Windows Server 2012 R2 Web Application Proxy servers is sometimes tricky if you are not familiar with the technology. Basically you need to perform 3 operations: Change the Service-Communications certificate in ADFS. Set the new SSL certificate to be used by the…

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Customize the Home Realm Discovery page to ask for UPN right away

When you have more than one Claim Provider Trust, this is the default user experience: The Piaudonn Yoga is in fact my local Active Directory. The other one, Cabane, is another ADFS deployment that I am trusting. If you don't want to have to list all your trusts, or just rather have the user type its…

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ADFS extranet lockout and PDC requirement

The Extranet Lockout is a new feature available on Windows Server 2012 R2 ADFS when the Web Application Proxy is used. In a nutshell, it protects against password discovery attacks coming from the Internet… If you have no idea what I am talking about, here is an excellent article explaining how it works and how to…

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