Free account limitation?

I am trying to demo auth0 for my company but I am having trouble with the authentication page - it currently appears to be allowing anyone to authenticate:

https://conceptual.auth0.com/login?client=tKbILPv6ztJG_UzwFHGG3qw88EzxxL2s

Is this by design or is there a configuration where I can deny access to only a certain set or users?

Thanks,
Gregg

By authenticate, do you mean sign up or login? Sign up by default does not have any restrictions. You have a couple of options:

  1. Disable sign ups: Dashboard > Connections > Your connection > Disable sign ups.
  2. Setup a simple
    whitelist Rule
    which will only
    allow users with specific email
    addresses.