Proxyrama is a tool for finding and testing proxy servers. it will test them for anonymity, speed, if it's a gateway proxy, 'connect' support (=chainability), socks 4/5 support and geographical location. furthermore, it can be used as a local proxy server that redirects your traffic through a arbitrarily long chain of anonymous proxies and let's you skip images, multimedia crap, ads, popups etc.

http://gaamoa.deny.de/

By Tedob1 from http://antionline.com/showthread.php...ighlight=proxy

As for the different ports, I don't think it matters, as long as its a proxy.