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?