IOSec Addons are enhancements for web security and crawler detection
IOSEC PHP HTTP FLOOD PROTECTION ADDONS
IOSEC is a php component that allows you to simply block unwanted access to your webpage. if a bad crawler uses to much of your servers resources iosec can block that.
IOSec Enhanced...
The PHP firewall generator is a simple PHP script that generates a firewall script for iptables based firewalls. Note that release 1.0 is for ipchains, and release 2.0 is for iptables.