2 entries are registered on port 6789. It is a registered port (1024–49151) — IANA records an assignee, but nothing stops other software from listening here, which is why the number carries more than one entry.
services registered on this number
1 transport in use
entries encrypted on the wire
1 of 2 iana-registered
| port | service | proto | category | risk | views |
|---|---|---|---|---|---|
| :6789 | LoggerNet Datalogger | TCP | Network Services | caution | 9.2k |
| :6789 | Oracle Remote Administration Daemon | TCP | Remote Access | safe | 0 |
Port 6789 is commonly used by LoggerNet, a Campbell Scientific software suite designed to interface with dataloggers for environmental and industrial data collection. This port facilitates data collection, device configuration, and data dissemination within monitoring networks using custom communication protocols.
port 6789 as LoggerNet Datalogger →TCP port 6789 is assigned for GSS-API use by the Oracle Remote Administration Daemon.
port 6789 as Oracle Remote Administration Daemon →The registry says what 6789 is registered to. What is listening on it right now is decided by the host, and only the host can be asked. Each of these prints the process behind the socket.
ss -ltnp | grep ':6789\b'lsof -nP -iTCP:6789 -sTCP:LISTENnetstat -ano | findstr :6789On Linux and Windows the process name comes back with the socket; on macOS lsof needs sudo to name a process that isn't yours. Match what it prints against the 2 entries above.
A port number is not a service. Anything may listen on 6789 — what you actually met is decided by the host, not the registry. If a service is missing here, it belongs in the registry.
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