How to enable access to subsite only to certain users or groups?

Question

I created an intranet site based on Sharepoint Foundation 2010 which is based on mixed authentication (Windows and Form Based).

It has a main site where all logged users have access and there are different subsites. I am trying to set the subsites in a way that, by default, their access is denied to all logged users.

Users can access to the subsite only if an administrator has granted them access to read or read/write.

Unfortunately I cannot reach the desired result. I have tried to delete the automatically created Visitors group from the subsite but all users continue to have access to the subsite too.

Do you have any idea how can I reach the desired behavior?

Answer 1

You don't need to delete any groups for this, you just have to break the permission inheritance for the website you want secure. After breaking inheritance you can remove all unwanted permissions and give permission to the users/groups you want.