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...
IP Blocker is an incident response tool that automatically updates access control lists on Cisco routers and other devices. Web and command line interfaces are both supported, as is logging, email notification, and automatic expiration of blocks.