# WHATPORT(9618)

## NAME

port 9618 — HTCondor collector — The HTCondor collector daemon — the directory every machine and job scheduler in a batch-computing pool reports to.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

HTCondor is the distributed high-throughput computing system from UW-Madison, used to run batch workloads across university and lab clusters. Port 9618 is registered to `condor` and is the default port for `condor_collector`, the daemon that every startd, schedd, and negotiator in the pool contacts to advertise and look up ClassAds. Optionally an installation enables `condor_shared_port`, in which case daemons share a different single listener and the collector moves with it. An open 9618 means a machine is acting as a pool central manager.

## EXPOSURE

**Do not expose.** The collector is the control plane for job placement across a whole cluster. Reachable only from pool members, with HTCondor's own authentication and authorization configured — the defaults are permissive.

## CHECK

```sh
condor_status -pool TARGET:9618
```

## SEE ALSO

- docs — [HTCondor networking documentation (default collector port 9618)](https://htcondor.readthedocs.io/en/latest/admin-manual/networking.html) (htcondor.readthedocs.io)
- source — [HTCondor source repository](https://github.com/htcondor/htcondor) (github.com)
- iana — [IANA Service Name and Transport Protocol Port Number Registry](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml) (iana.org)

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