Hello, I need some advice here. I need a MoCA internet connection in room 2 of the diagram. Unfortunately there is a splitter outside of the house so in order to install a moca adapter I would have to do it on my modem coax line, have it go upstream to the exterior splitter, and then to room 2. I'm guessing if this would even work I would need a filter prior to the modem? Just trying to figure all this out and I have no idea how to properly draw a network diagram.