IIS Reverse Proxy with authentication through ADFS

Hi,

In my companies network we have a web app we would like to restrict access to. The authentication should be done using ADFS. Unfortunately, for various reasons I cannot setup the authentication process in the web apps server itself. My plan for handling this is to create a proxy server that will authenticate the requests before proxing them to the actual web app.

I have created the proxy on IIS 8, Windows server 2012 R2, using ARR and UrlRewrite.

I have used FedUtil.exe that comes with WIF SDK to configure the proxy web.config to authenticate against our ADFS. This had no effect and the proxy continued to pass the request directly.

This answer suggested adding

runAllManagedModulesForAllRequests="true"

to the Modules deceleration in web.config but still no luck.

Any ideas?

Thanks!