Active Directory - Pass Credentials
I am working on an intranet site. A portion of the site is going to be dedicated to a select few users. There is a third party service that we only want to allow access through this intranet page.
How can I validate users in the specified group?
How can I pass the credentials on to the 3rd party site, so that there isn't a second authentication window?
What is the best way to persist the authentication throughout the entire session?