accountmanagementengine
This is a single PHP script that allows you set bans across all your sites using a single database for managing bans. The idea behind this is to make it simple to integrate and make it so you don't have to touch iptables or other firewall software.
/*
* CentralACL
* By: Nathan Adams
*
* Licensed under Apache 2.0 (see LICENSE.txt)
*
* How to use:
*
* 1. Replace MySQL credentials with your own
* 2. Write the following line at the top of your PHP scripts:
* include /path/to/centralacl.php;
* 3. ?????
* 4. Profit!
*
*
*/