How does ProxyPass work?
No, ProxyPass is not a hosted script. The software is a custom Apache module written in highly optimized C that loads into your Apache binary. As such, all detection and denial policies are handled on the installed client server. Although the details of its architecture are proprietary trade secrets (and protected as such), it works by monitoring all authentication request details (i.e. network endpoints, packet and protocol header information, username, transferred BW) for compliance with detection thresholds set by the Apache administrator. In addition, the ProxyPass client module queries centralized ProxyPass servers for access to the largest, most up-to-date list of open, abused proxies. ProxyPass client servers do not search for proxies, nor are they doing intensive analysis of network traffic patterns; that work is done on the centralized ProxyPass servers.