Due to any requirement from SAP Support, you need to test the P4 port.
For a similar document to check all live ports, go through: SAP KBA 1925352 - Check P4 port/access points being used by a live SAP JAVA server
SAP NetWeaver Application Server Java
client, server, communication, initialcontext, telnet, connect, java.naming,com.sap.engine.services.rmi_p4.P4IOException,access point for the protocol is available,Cannot establish connection with any of the available profiles,No alive connection,Check state of the server,Could not establish connection to AS Java,bindhost,ICM,disconnected from ICM,.rmi_p4.P4ObjectBrokerClientImpl.getException , KBA , kde , BC-JAS-COR-RMT , RMI, P4, CORBA, IIOP , BC-JAS-ADM-MON , Monitoring , How To
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