To share Membership and Master page in all app of a portal

Question

HI All,

 

I have a portal which have more than 10 application. Now, I need to implement single membership over all applications in other words the flow of application like...

1. User will log in  in portal.

2. Landing page will be open and as per role  have Icons of all application.

3. Clicking on Icon user will enter in application. Application will be open in portal's master page and master page have log out.

 

I have used membership for single application. I got many Ideas like by creating virtual directory, by creating master page dll  etc.

Please suggest me if something possible. 

 

Thanks & Regards

Gaurav MIshra