Configure SharePoint 2013 with Azure MFA Server

Is there a specific way to configure SharePoint 2013 Authentication to work correctly with the Azure MFA Server?
I have got a SharePoint farm on Azure, IaaS and I have installed the new MFA Server for Azure.
It actually works correctly with a normal IIS site, but if you toggle the server to work with a SharePoint web app, subsequent logins to Sharepoint will always generate a 403 error and you won’t ever get a call from PhoneFactor.
Can someone please help me out with this?

Hello, You can have a look at the blog below:
magenic.com/BlogArchive/MultiFac … intusingAD
And this too:
blogs.technet.com/b/speschka/arc … -2013.aspx