Jason,
As far as I know on current releases all one can do is recognize the IP address of a client AFTER the connection has been made.
You probably could then close the connection and email/page someone but whoever connected has sent a message and that will be lost. That system might have simply made a mistake and would like to know about it.
I think a request has been made to add the ability to reject connections based on IP Address. However, usually that is the reason one employs a firewall which has more capability than is likely to be deployed in something like Cloverleaf.
Jim Kosloskey
email: jim.kosloskey@jim-kosloskey.com 30+ years Cloverleaf, 60 years IT – old fart.