Need comprehensive list of Proxy IPs

I need a large comprehensive list of known Proxys on the internet. I'd like to block as many users connected through a proxy as possible. Anyone know where I can find/purchase/download a massive list of known proxys?

Thanks a lot,

Twine

 

I just need a complete list of proxy ip's. Where do you find this?

 

With the size of the lists you'll find I would consider this pretty useless for the following reasons:

a) You'll just be filling up your firewall ruleset with a bunch of IPs that the firewall will likely never see.
b) If you're firewall has to process a ton of rules, eventually you will start to notice it affecting performance on your system.
c) a lot of the IPs / proxies are likely outdated or do not exist anymore anyway