Mounting Ethernet wall-plate in a solid wall
Nothing easier.  Install any sort of electrical 1-gang junction box on the surface of the wall.  Remove a knockout from the back of the box, and line it up so the wire comes through the middle of it.  

The cover plate you linked is designed to fit to a 1-gang box.  

I would go for either a $1 handy-box, or a Wiremold surface conduit box, depending on the aesthetic you want.