My solution has 4 layers of protection.
1st layer: Custom IPs blacklist and cache. Supported by the layers above and customizable if your personal IPs blacklist.
2nd layer: TOR users protection. Almost 100% effective.
3rd layer: Popular and Known Proxy Servers blocked.
4th layer: Unknown proxies blocked by intelligent algorithms.
It works for any site running PHP.
I challenge you to try some proxies on my site: http://bitcoin-catcher.com/faucet (only works on the faucet page).
If you are interested in a deal, send me a PM.
https://www.vpnbook.com/webproxy
http://bitcoin-catcher.com/faucet
Yours isn't flawless, quit trying to "make a deal"/advertise your faucet on my thread. My thread is intended for free public knowledge, so please leave.
No problem, friend. I just edited my post and removed the link.
Anyways, I'm just trying to trade knowledge.
Do not forget that I am helping faucet owners about security questions for free about weeks in this forum...
>>> https://bitcointalksearch.org/topic/updated-19jul2016-faucet-owners-against-scammers-and-bots-1200700