{
  "port": 5566,
  "protocol": "tcp",
  "service": "Westec Connect (westec-connect)",
  "oneLiner": "Registered in 2009 to a commercial video-surveillance service and rarely seen anywhere else.",
  "whatItIs": "IANA registered 5566/tcp in 2009 as westec-connect, for Westec Intelligent Surveillance's managed video product; UDP 5566 is reserved rather than assigned. No protocol description was published, and no common software defaults to this port. Open on a host that is not part of a Westec installation, it is simply an application someone assigned there.",
  "exposure": {
    "verdict": "careful",
    "note": "If it really is surveillance connectivity, video and camera control are sensitive traffic — confirm what is listening before letting it out."
  },
  "checkCommand": "nc -vz -w 3 TARGET 5566",
  "links": [
    {
      "title": "IANA port registry — 5566 (westec-connect)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=5566",
      "kind": "iana"
    }
  ]
}