...
We’ve added a new option in the LUNA Administrator to turn off facets in a Credential, hiding entry points in the LUNA Viewer to the Browse by Category pages, Browse by Title pages and Facet Browsing (Who, What, When, Where) in an effort to stop aggressive crawlers making LUNA useless for clients and causing downtime. The feature works with the Anonymous credential to hide facets that are part of public collections, with the option to allow facets to remain visible to users accessing LUNA on campus. It will not affect users with an account.
...