Explanation/Reference:
When a database deployment is created, the following Oracle Compute Cloud Service security rules are created, but set to a disabled status.
ora_p2_dbconsole, which controls access to port 1158, the port used by Enterprise Manager 11g

Database Control.
ora_p2_dbexpress, which controls access to port 5500, the port used by Enterprise Manager Database

Express 12c.
ora_p2_dblistener, which controls access to the port used by SQL*Net.

ora_p2_http, which controls access to port 80, the port used for HTTP connections.

ora_p2_httpssl, which controls access to port 443, the port used for HTTPS connections, including

Oracle REST Data Services, Oracle Application Express, and Oracle DBaaS Monitor.
References: References: Using Oracle Database Cloud Service (February 2017), page A-5
https://docs.oracle.com/en/cloud/paas/database-dbaas-cloud/csdbi/using-oracle-database-cloud- service.pdf