Communication Ports for Additional Polling Engine

I am getting ready to setup an additional polling engine and wanted to confirm the necessary port communication.  Can somebody please validate if this is correct?

Addt'l Poller --> Orion Platform:     TCP 17777 (SW Information Service)

Orion Platform --> Addt'l Poller:     TCP 17777 (SW Information Service)

Addt'l Poller --> Orion Platform:     TCP 1801 (MSMQ)  Not sure if this is needed or not?

Addt'l Poller --> SQL Server:         TCP 1433 (SQL Server Communication)

Thanks in advance for any help on this!