Basic authentication is a standard mechanism for servers to instruct browsers to prompt the user for credentials. It is recommended to use it in association with HTTPS due to the way that it passes unencrypted passwords over the network.
If WebServer Authorization is configured to allow access by both anonymous and authenticated users then by default users will not be prompted for credentials, and will be given anonymous access. To force a password prompt visit the route
/login-basic (for example, http://127.0.0.1:8080/login-basic).