
Secure P4 is used for communication between the WebStart client and the ES Repository.
This property contains the protocol used for P4 communication. Possible values are P4 (default) and P4S (secure).
This property contains the P4S port number of your AS Java host.
It is a prerequisite that your AS Java is configured for SSL. More information: Configuring the Use of SSL on the AS Java .
This property contains the HTTPS port number of your message server.
It is a prerequisite that the message server of the SCS Instance is configured for SSL. More information:Metadata Exchange Using SSL (SAP Help Portal)
HTTPS is then used for the communication with the message server and secure P4 is used for the communication with the WebStart client.