if you are using a router, that means you are connecting two networks (forowording/receiving packets to another network). there's no straigt way to connect with other network just like u can do in your own LAN/Network. you can use special software like VNC+ or like this to transffer files through router. it's not possible to directly connect through router as u can do in your own LAN.if you need further help, please contact with me ([email protected])THANK YOU.