Answer by simne7 for Password protect a specific URL

Unfortunately I can't comment on @jon-lin answer. So, I create a new answer. My adapted solution in an apache 2.4 environment is:

## password protect /pretty/url URIs#AuthType BasicAuthName 'Authentication required'AuthUserFile /path/to/.htpasswd# Restrict access to some urlsSetEnvIf Request_URI ^/pretty/url  auth=1<RequireAll>  # require the auth variable to be set  Require env auth  # require an valid-user  Require valid-user</RequireAll>