Port 1521TCP
Current port of the Oracle.
What is the purpose of port 1521?
Database. The protocol or service generally associated with this is Oracle Database.
Transport Protocol
TCP
Safety precautions
To be strictly by the way of the report.
Should we open this port in the firewall?
Only if a service is actually needed the use it. Apply the principle of any privilege: limit the authorized sources, destinations and interfaces, and then log connections when relevant.
How do I check this port?
Test-NetConnection SERVER -Port 1521Under Linux, you can use nc -vz SERVER 1521.
Port/service associations are common conventions. An application can be configured on another port.