sharif

yes software like hotspot sheild(virtual private network) .Stop means if user install this software i want to know there virtual private network address .So i can block that address using host file. same as othere software like ultra surf and othere vpn software there only few software that are commonly free available. so if i can find that address . i have solution for chrome extention like zenmate but i don't know how to stop vpn software from being connecting to there server .?

I know using host file we can block any site but as you know if any one use proxy like hotspot sheild or anyothere proxy software he can easyly visit any website . so i want that make script/program that stop proxy software ? i hope you understand what i mean !

Hi i want to block adult websites .But problme is that user can use proxy .I want to stop connecting proxy software from being connect to there server. please help anyone ? or solution of this problme ?