# WHATPORT(7676)

## NAME

port 7676 — imqbrokerd (OpenMQ Port Mapper) — The Open Message Queue broker's Port Mapper — connect and it tells you which ports its JMS services really use.

Protocol: TCP  
IANA registry

## DESCRIPTION

Open Message Queue (formerly Sun/Oracle Message Queue, now Eclipse OpenMQ, the JMS provider bundled with GlassFish) starts its broker with imq.portmapper.port=7676 by default. The Port Mapper is a rendezvous service: a client connects to 7676, receives the broker's version and a table of its dynamically allocated service ports (jms, ssljms, admin, cluster), then connects to the one it needs. So finding 7676 open means a Java message broker is running, and the port itself hands you a map of the rest of it.

## EXPOSURE

**Do not expose.** The Port Mapper answers before authentication and enumerates the broker's services; a message broker is backend infrastructure and belongs on a private network, not a public IP.

## CHECK

```sh
nc -w 3 TARGET 7676 | head -c 200; echo
```

## SEE ALSO

- source — [Eclipse OpenMQ — broker source and default.properties (imq.portmapper.port=7676)](https://github.com/eclipse-ee4j/openmq) (github.com)
- iana — [IANA port registry — 7676 (imqbrokerd)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=7676) (iana.org)

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HTML: <https://whatport.net/7676/> · JSON: <https://whatport.net/7676.json> · full dataset: <https://whatport.net/ports.json>