ScaleIO and ESRS Gateway configuration

ESRS Gateway must be reachable from ScaleIO on port 9443.

Do we need to open port 9443 for ScaleIO gateway server only?

The ScaleIO Management IP address to be used as the Connect-In IP address must be an IP address that is accessible from the ESRS Gateway.

Is this Gateway server IP address?

If Yes, Can we update the document as below to be clear. It is just my suggestion, Correct me If I am wrong.

“The ScaleIO gateway Management IP address to be used as the Connect-In IP address must be an IP address that is accessible from the ESRS Gateway”