...
and then enter the password (twice) when prompted. Of course it is strongly recommended that the Grouper WS only be available by HTTPS so that the password is protected by the TLS secure channel.
An alternative to using a password file is to use a module like mod_authnz_ldap that would test the password against an LDAP directory server instead of a password file.
At this time only authentication methods that use basic authentication are supported by the COmanage Registry Grouper Provisioner. The provisioner cannot, for example, follow redirects or fill out a form or use an X.509 certificate for authentication.