You may already know that, due to its lightweight architecture, ASP.NET MVC makes it simple to get a website up and running. But another advantage to such a manageable framework is how simple it is to implement any necessary component with just the bare minimum functionality.
One such requirement is the need to enforce Forms Authentication for your website. When creating a simple prototype, you’re probably not concerned with the specifics of the user security, implementation, but you probably do want to demonstrate it!
Read more at the Falafel Software Blog: Dead Simple ASP.NET MVC Authentication