I want as few inbound ports open as possible. I'm assuming so does every person. So the simplest solution is to instead we have 2 outbound connections that talk

I want as few inbound ports open as possible. I'm assuming so does every person. So the simplest solution is to instead we have 2 outbound connections that talk to a middleman. Are their better ways, of course, but this is simple to wrap your head around and can be accomplished by anyone with even the most basic technical understanding.