Description
Adds an checkbox labelled 'Retain /node as an active url?' to /admin/config/system/site-information
This lets you disable the /node page which would otherwise list all published content.
Note it doesn't let you individual disable /node/xxx access by content type - see restrict_node_page_view or rabbit_hole for that.
This is for D7 only - in D8 you go to /admin/structure/views and disable /node there.