{
  "port": 16018,
  "protocol": "tcp",
  "service": "Unassigned",
  "oneLiner": "Another unregistered number in Nmap's top-1000 list with no documented owner.",
  "whatItIs": "IANA has no assignment for 16018, and Nmap records it as unknown while still scanning it by default because of its observed open-port frequency. No mainstream software documents 16018 as a default listener. If you find it open, the only honest description is \"an unidentified TCP service\" until you fingerprint it.",
  "exposure": {
    "verdict": "careful",
    "note": "An unattributed listener is the finding. Trace it to a process locally rather than reasoning from the port number."
  },
  "checkCommand": "sudo lsof -nP -iTCP:16018 -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 frequency database",
      "url": "https://github.com/nmap/nmap/blob/master/nmap-services",
      "kind": "github"
    }
  ]
}