Attached is a diagram I created to understand the type of communication and porst required open for basic SCCM site communication, client communication, and WSUS/SUP. I gathered this information from Technet articles but need verification that it is correct.
For example, is it true that if you have WSUS/SUP installed on all of your site servers that they will need ports 8530/8531 to communicate WSUS information to each other or is that handled via SQL replication?
Also if client push was used would RCP be required from the secondary to the client? TechNet shows it is but we have no