Rejections

I am using freeradius 2.1.3 using MySQL for my IP pool and user auth tables in my small ISP. What I need to do is have customers that get rejected with a bad password assigned to a particular IP pool. I am sure this is possible, but can't find it. I assume I am just looking for the wrong keywords - LOL. Can somebody point me in the right direction? Thanks in advance. Jack Martin Magic Wireless Internet Service Providers LLC P.O. Box 278 104 W. Main Oilton, OK 74052 www.magicwisp.com