Finding open proxies?

Hi, anyone know how to search for open proxies inside your network?
I want to know if any of our customers is operating a proxy.

regards.

Hi Alans,

First, you need to scan the IP range for open ports, using a ports scanner like "Free IP Tools"

www.all-nettools.com/free-ip-tools.htm

Then you can add or import the list of those IPs that have open ports into a proxy checker like ProxyWay:

www.proxyway.com/

Thanks S0lo, you helped me a lot

Your most welcome, any time