We currently have a community chat website that is frequented by many people using VPN to bypass bans.
They use such services as [login to view URL] or Tor Exit nodes.
We want to have a system that will detect anybody using a VPN service or similar and not allow them to use our chat application.
We have several chat applications. One is built with flash, another with PHP, and a new one coming built with [login to view URL] and node.js.
I think the best thing to do would be to put this checker BEFORE logging into the chat room. We need to find an efficient way to implement this.
11 freelancers are bidding on average $208 for this job
I have a very good online script that we can embed in to php of your website, it will detect and simply block the proxy/vpn from iptables(linux). Let me know if you are interested