Enduro offers no-setup basic login for under-construction or internal projects. This login will hold off website crawlers or random visitors. To keep things simple, the authentication is done by passphrase only - no username/password. This feature is called trollhunter based book and netflix show by the same name
Enduro's cli offers a convenient cli command
enduro secure <passphrase> which will enable this feature and set the passphrase.
Just delete file /.enduro_secure in the root folder.