How to let part of the sites through a proxy / vpn in the router?

Question

VPN

There is an Asus RT N-16 router.
The router is connected to the ISP via PPTP.
Some sites are required, for example, vk.com and others through a proxy or vpn.
How to do it correctly? Since I don't know much about Linux.
PS. Those. we need to hide your real IP address for individual sites.
UPDATE. It is necessary to configure it on the router because the router distributes Wi-Fi, and they enter the same VKontakte from the phone and from the tablet and from the stationary PS.

Answer 1

Install the browser extension and use it. For example Hola .

Answer 2

You can install an alternative firmware, for example TomatoUSB , then you can at least put a proxy server in OPTWARE, at least wrap a third-party part of the traffic with simple routing and firewall rules.