Advice on set up of the Mamebership plugin

I want to set up Membership so that only the start page is visible. All other pages needs a login (Also Widget areas like listing sub pages etc.).

How do I do that or is there a better way then to use Membership? In the start we had about 50% of the content on a page behind a login, but now we need to hide it all. I want to create a "Extranet" and have full control over what the users can read...

All the best