Hi, on a basic WordPress installation in localhost I tried your plugi but couldn't get it to work I think.
I have my IP from http://www.whatismyip.com/.
I took an IP from co-worker who lives out of state. When I added her IP, I was still able to login.
I was thinking I should be blocked from the login page if the only IP list for access is hers.
Am I misunderstanding how IP's not listed are affected?