Thank you for the Information.
I had the same issue and with those two ports it is fixed now.
Beside that:
We installed on Dec 2013 a fresh vCenter 5.5 with Orchestrator on a Win2k12R2 Server (german language).
After the update we did today to 5.5.1 i found the Orchestrator Firewallrules twice in our Windows Firewall Settings.