{
  "port": 13456,
  "protocol": "tcp",
  "service": "Unassigned",
  "oneLiner": "Unassigned by IANA; like 12345 it is a keyboard-run number, which is the only reason it ever shows up.",
  "whatItIs": "IANA has no registration for 13456 — the registry goes from `doip-data` (13400, ISO 13400 Diagnostics over IP for vehicles) to `bprd` (13720, Veritas NetBackup) with nothing in between. Nmap lists the port as `unknown`. Its only claim to appearing at all is that consecutive digits are easy to type, so it turns up as a scratch or test listener in the same way 12345 does. There is no documented product or malware default.",
  "exposure": {
    "verdict": "careful",
    "note": "A memorable number usually means a hand-started service rather than a managed one. Find out what it is before leaving it reachable."
  },
  "checkCommand": "nmap -Pn -sV -p 13456 TARGET",
  "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"
    }
  ]
}