Authenticated access?

Hi

Is there a possibility for "authenticated" access without the need of
defining roles?

I want to have content which can be viewed by authenticated users which
have no explicit roles.

In Zope, this is possible by the default-role "authenticated".

For editors there could be a 'non-public' attribute on objects for that
purpose.

Is there a simple way to get this running?

Regards
PeterZ, JKU