You probably don't want an ipchains script.
Portsentry will block people for you. I know when I setup your ipchains after your hack, it was version 1.0. This had a bug in that it didn't really set ipchains. You need to get 1.1 and everything will work if you make sure the line is not commented that has ipchains ....
If you do run the ipchains script from redhat you will have to make adjustments for your proxys and etc.
