I'm thinking about getting a VPN service. Now my setup is going to be my gateway/router (AT&t (which almost has no functions to it), then I'm going to put another router between that and home network. The router I'm thinking about getting is the Nighthawk R7000 which has VPN service. No problem, but I'm also thinking about putting VPN on my raspberry pi (webserver (Apache)). Can I do this?