I have

1.) Sharepoint 2010 web applications with Default windows authentication.

2.) ASP.Net Application with custom authentication against Same AD.

Now I have requirement to implement SSO among these applications.

At this point I don't want to change the Authentication mode or provider in Sharepoint web application.

In browser, If I logged in with Sharepoint web application then Asp.net application should not ask authentication and vice versa.

How can I achieve this?

1 Answer 1


There are MANY ways to accomplish this. You could write your own SSO SAML provider, use a third-party, etc. However, Microsoft seems to finally be on the ball with this in the new Windows Server 2012 R2. 2012 R2 comes with a service called the "Web Application Gateway". With this, you would setup a new 2012 R2 server that acts as a gateway to your other web applications. You can handle your authentication at the gateway and have it passed to each published web application.

  • to write our own SSO SAML provider we have to implement FBA and claim based authentication.. am I right? but I have to go with the SP web application with Claim based enabled and integrated windows authentication... Can u please suggest some good technical article for this?
    – user19542
    Commented Sep 19, 2013 at 15:41

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