ADFS (Active Directory Federation Services)

I've been tasked with an ADFS project.

I have to find out if there are any risk of having ADFS facing the web without a proxy in front of it ?

Can someone let me know where I can find information about this type of concern and configuration ?


Tech Guy :-)
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btanExec ConsultantCommented:
This guidance is a good starter before even saying to go into deploying and configuring it. Actually you can still publish the ADFS server to internet (by opening port 443 like in case of Office365  or 80) to allow users outside your company network to access federation server. But security folks see it otherwise for such "direct" by external parties, and they consider proxy:
- Isolate federation servers such that it prevent external client computers from directly accessing prior authenticated
- Identify user identity and managed expectation with necessary sign-in experience for those from ext and int
- Leverage existing DMZ demarcated for consistent enforcement to service exposed such as web services via proxy
See more use case in
@ Planning Federation Server Proxy Placement
@ Best Practices for Secure Planning and Deployment of AD FS

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andavispsavAuthor Commented:
I really appreciate this !!!

You've helped me greatly here and I do thank you.

Tech Guy :-)
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Active Directory

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