Somehow I missed this one, but as I reviewed the diagram and helped selecting the right format I figured I would still share it. This Network port diagram for vSphere 5.x is one awesome resource for those folks who want to get to the bottom of how components interact with each other.
I don’t think there is a lot more I can say about it, those who love diagrams and like to know the details make sure to hit: http://kb.vmware.com/kb/2054806
There is a port missing from the web client server. This also requires connectivity to the inventory server on port 10443