Port :2483Oracle Listener (Unsecure)

Port 2483 serves Oracle Net Listener services, a fundamental component in Oracle's client-server architecture. The Listener is responsible for handling incoming connection requests from Oracle clients, parsing them, and directing them to the appropriate database service or instance. Port 2483 specifically is often configured for unencrypted sessions, distinguishing it from 2484, which is designated for encrypted SSL-secured communications.

Oracle Listener on 2483 supports both TCP and UDP protocols to facilitate network resilience and flexibility. It performs key functions such as redirecting client connections to dedicated or shared server processes, maintaining load management, and interfacing with Oracle’s Service Name resolution mechanisms. This setup is commonly found in development or testing environments or in legacy deployments where encryption is not mandated.

Communication on port 2483 typically includes client authentication, SQLNet message exchanges, and command execution requests. In production environments, using port 2483 without encryption is generally discouraged due to data in transit visibility, but it remains important for backward compatibility or within trusted internal networks.