Blocking 3CX Management Console from public

[cobaltit]

Ah. Thanks ChrisC. This would mean there is no way to block then. Our 3CX Clients are using Softphone so there is no way to go by IP.
Thanks.

There is absolutely a way to block. You block all external access, and then you put a VPN client on all your mobile devices, at which point all requests would be internal. I mean I assume you have VPN clients on your mobile devices if security is such a concern that displaying the login screen is considered a security risk.