Secure Content to Authencated Users (*dream stretch to roles)

[sosensible]

Is your feature request related to a problem? Please describe.
Can we secure nested folder content to only people authenticated/logged in on the site? So, a slide show, graphic, and more only become available to someone logged in.

Describe the solution you'd like
When a user not authenticated tries to access content, they get a 404, etc.
When an authenticated user tries to access permitted content, they get access.
( Yes, roles would be a bonus, but just first level... only logged in users would be great.)

Describe alternatives you've considered
This is for content from images, to slidev presos. Alternatives would be video and that prevents the pragmatic ability to update quicker, and provide current content easier.

Additional context
Add any other context or screenshots about the feature request here.