The only way I know you can do this is through a VPN (Virtual Private Network} service. But that does not mean it can't be done with a router. However, I do not know of any router that can do this though, even with special software.
PM me if you need to buy Gargoyle router in Australia/NZ, willing to pay me to help you on your Gargoyle configurations or build custom configured ROM with pre-installed app or try to fix your bricked router. Yes, I am looking for job/work.