Some routers have VPN ability. If you've got Tomato on there, you could certainly VPN your router and then everything coming and going is good. At least, that's what I'd assume. Somebody totally correct me if I'm wrong.
Thanks for the response(repped). That would be correct but my current living conditions do not allow me to have access to the router. The building has a few access points for each floor and everyone who lives here just shares the wifi (in Vietnam for work). So I would need to configure the VPN directly through the device. Anyone...?