Affichage tel que « Visible uniquement par les utilisateurs connectés »

I always stay logged in while browsing the gallery, so I didn't notice, but without logging in, the images available for viewing are restricted. Is there a setting for this? If such a setting exists, I would appreciate it if there were a notation like "Visible only to logged-in users," similar to the "R15" label, to help me decide whether to generate and publish images.