{
  "port": 9618,
  "protocol": "both",
  "service": "HTCondor collector",
  "oneLiner": "The HTCondor collector daemon — the directory every machine and job scheduler in a batch-computing pool reports to.",
  "whatItIs": "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": {
    "verdict": "never",
    "note": "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."
  },
  "checkCommand": "condor_status -pool TARGET:9618",
  "links": [
    {
      "title": "HTCondor networking documentation (default collector port 9618)",
      "url": "https://htcondor.readthedocs.io/en/latest/admin-manual/networking.html",
      "kind": "official-docs"
    },
    {
      "title": "HTCondor source repository",
      "url": "https://github.com/htcondor/htcondor",
      "kind": "github"
    },
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml",
      "kind": "iana"
    }
  ]
}