{
  "port": 8540,
  "protocol": "tcp",
  "service": "Unassigned",
  "oneLiner": "No registration, no documented default — whatever is here was chosen locally.",
  "whatItIs": "IANA has no assignment for 8540 on either transport, and Nmap tracks it as \"unknown\" with an open rate near 0.015%. Nothing widely deployed documents it as a default port. As with the rest of the unregistered 8xxx range, an open 8540 tells you only that some process bound it.",
  "exposure": {
    "verdict": "careful",
    "note": "Treat it as an unidentified service and judge exposure by what the process actually is."
  },
  "checkCommand": "sudo lsof -nP -iTCP:8540 -sTCP:LISTEN",
  "links": [
    {
      "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"
    },
    {
      "title": "nmap-services — Nmap port frequency data",
      "url": "https://github.com/nmap/nmap/blob/master/nmap-services",
      "kind": "github"
    }
  ]
}