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365 MFA ADFS Bypass

%3CLINGO-SUB%20id%3D%22lingo-sub-360326%22%20slang%3D%22en-US%22%3E365%20MFA%20ADFS%20Bypass%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-360326%22%20slang%3D%22en-US%22%3E%3CP%3EHi%20all.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ERequire%20some%20advice%20please%20-%20365%20hybrid%20to%20adfs4.0.%26nbsp%3B%20Looking%20to%20turn%20on%20MFA%20for%20users%2C%20although%20require%20to%20bypass%20all%20mobile%20and%20skype%20-%20also%20dont%20mfa%20on%20internal.%3C%2FP%3E%3CP%3ECan%20anyone%20assist%20with%20the%20correct%20rules%20we%20require%20for%20the%20adfs%20server%20please%20%3F%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EMany%20thanks%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-360326%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EExchange%3C%2FLINGO-LABEL%3E%3CLINGO-LABEL%3EHybrid%3C%2FLINGO-LABEL%3E%3CLINGO-LABEL%3EOffice%20365%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-361022%22%20slang%3D%22en-US%22%3ERe%3A%20365%20MFA%20ADFS%20Bypass%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-361022%22%20slang%3D%22en-US%22%3E%3CP%3EThere%20are%20many%20example%20rules%20that%20do%20that%2C%20just%20look%20at%20the%20documentation.%20For%20example%2C%20this%20article%3A%3CFONT%20style%3D%22background-color%3A%20%23ffffff%3B%22%3E%3CA%20href%3D%22https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fwindows-server%2Fidentity%2Fad-fs%2Foperations%2Faccess-control-policies-w2k12%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fwindows-server%2Fidentity%2Fad-fs%2Foperations%2Faccess-control-policies-w2k12%3C%2FA%3E%3C%2FFONT%3E%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CP%3EAnd%20here's%20a%20sample%20rule%20we%20used%20with%20one%20of%20my%20customers%20back%20in%20the%20day%3A%26nbsp%3B%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CPRE%3ENOT%20exists(%5BType%20%3D%3D%20%22http%3A%2F%2Fschemas.microsoft.com%2F2012%2F01%2Frequestcontext%2Fclaims%2Fx-ms-forwarded-client-ip%22%2C%20Value%20%3D~%20%22insert_list_of_IP_addresses_here%22%5D)%0A%0A%20%26amp%3B%26amp%3B%20NOT%20exists(%5BType%20%3D%3D%20%22http%3A%2F%2Fschemas.microsoft.com%2F2012%2F01%2Frequestcontext%2Fclaims%2Fx-ms-endpoint-absolute-path%22%2C%20Value%20%3D%3D%20%22%2Fadfs%2Fls%2F%22%5D)%0A%0A%20%26amp%3B%26amp%3B%20NOT%20exists(%5BType%20%3D%3D%20%22http%3A%2F%2Fschemas.microsoft.com%2F2012%2F01%2Frequestcontext%2Fclaims%2Fx-ms-client-application%22%2C%20Value%20%3D%3D%20%22Microsoft.Exchange.ActiveSync%22%5D)%0A%0A%20%26amp%3B%26amp%3B%20NOT%20exists(%5BType%20%3D%3D%20%22http%3A%2F%2Fschemas.microsoft.com%2F2012%2F01%2Frequestcontext%2Fclaims%2Fx-ms-client-user-agent%22%2C%20Value%20%3D~%20%22lync%7Cucmapi%7CWLMHttpTransport%7CLync%22%5D)%0A%0A%20%3D%26gt%3B%20issue(Type%20%3D%20%22http%3A%2F%2Fschemas.microsoft.com%2Fauthorization%2Fclaims%2Fdeny%22%2C%20Value%20%3D%20%22true%22)%3B%3C%2FPRE%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-360743%22%20slang%3D%22en-US%22%3ERe%3A%20365%20MFA%20ADFS%20Bypass%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-360743%22%20slang%3D%22en-US%22%3E%3CP%3EThanks%2C%20it%20is%20that%20i%20am%20after%20assistance%20with%3C%2FP%3E%3CP%3EDoes%20the%20order%20take%20priority%20%3F%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EBasically%20i%20require%20something%20that%20does%20not%20enforce%20mfa%20for%20skype%2C%20activesync%2C%20not%20all%20users%20at%20the%20moment%20are%20mfa%2C%20everything%20i%20been%20looking%20at%20enforces%20mfa%20unless%20it%20matches%20X%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-360709%22%20slang%3D%22en-US%22%3ERe%3A%20365%20MFA%20ADFS%20Bypass%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-360709%22%20slang%3D%22en-US%22%3E%3CP%3EThat's%20what%20Claims%20rules%20are%20for.%20I%20have%20few%20examples%20here%3A%26nbsp%3B%3CFONT%20style%3D%22background-color%3A%20%23ffffff%3B%22%3E%3CA%20href%3D%22http%3A%2F%2Fwww.enowsoftware.com%2Fsolutions-engine%2Fad-fs-claims-rules-and-modern-authentication%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%20noopener%20noreferrer%22%3Ehttp%3A%2F%2Fwww.enowsoftware.com%2Fsolutions-engine%2Fad-fs-claims-rules-and-modern-authentication%3C%2FA%3E%3C%2FFONT%3E%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CP%3EYou%20can%20find%20more%20in%20the%20official%20documentation.%3C%2FP%3E%3C%2FLINGO-BODY%3E
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Danny Kitchen
Occasional Contributor

Hi all.

 

Require some advice please - 365 hybrid to adfs4.0.  Looking to turn on MFA for users, although require to bypass all mobile and skype - also dont mfa on internal.

Can anyone assist with the correct rules we require for the adfs server please ? 

 

Many thanks 

3 Replies

That's what Claims rules are for. I have few examples here: http://www.enowsoftware.com/solutions-engine/ad-fs-claims-rules-and-modern-authentication

 

You can find more in the official documentation.

Thanks, it is that i am after assistance with

Does the order take priority ?

 

Basically i require something that does not enforce mfa for skype, activesync, not all users at the moment are mfa, everything i been looking at enforces mfa unless it matches X 

There are many example rules that do that, just look at the documentation. For example, this article:https://docs.microsoft.com/en-us/windows-server/identity/ad-fs/operations/access-control-policies-w2...

 

And here's a sample rule we used with one of my customers back in the day: 

 

NOT exists([Type == "http://schemas.microsoft.com/2012/01/requestcontext/claims/x-ms-forwarded-client-ip", Value =~ "insert_list_of_IP_addresses_here"])

 && NOT exists([Type == "http://schemas.microsoft.com/2012/01/requestcontext/claims/x-ms-endpoint-absolute-path", Value == "/adfs/ls/"])

 && NOT exists([Type == "http://schemas.microsoft.com/2012/01/requestcontext/claims/x-ms-client-application", Value == "Microsoft.Exchange.ActiveSync"])

 && NOT exists([Type == "http://schemas.microsoft.com/2012/01/requestcontext/claims/x-ms-client-user-agent", Value =~ "lync|ucmapi|WLMHttpTransport|Lync"])

 => issue(Type = "http://schemas.microsoft.com/authorization/claims/deny", Value = "true");
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