Provides a login request <form> like it is found in nearly all so-called
ContentManagementSystems+. It stores the retrieved data back into a
browser Cookie once(!), after it was verified to match the user account.
prev << "Available auth plugins"
next >> "auth_method_http"

You cannot modify the ProtectedMode file, but anyhow any ideas or suggestion should as usually get filed on BugReports, UserSuggestions or even better the ProtectedMode.Discussion.