vpn router

first you will need a VPN service.
There are quality services that have a free version available.
CyberGhost is a great VPN service and do have a free version.
Their paid versions are a notch or two better, as to be expected.

Code:
http://www.cyberghostvpn.com/en_us/download/windows-vpn

thru the site addy shown above, scroll to botto of the webpage and check out the General Information options. Some good info carried there to read up.
There is easy install just thru your web browser or you can configure OpenVPN for flashed DD-WRT routers

Code:
https://support.cyberghostvpn.com/index.php?/Knowledgebase/Article/View/667/184/how-to-configure-openvpn-for-flashed-dd-wrt-routers