{
  "port": 57797,
  "protocol": "tcp",
  "service": "Unassigned (dynamic range)",
  "oneLiner": "Unregistered and undocumented; a scan hit here identifies nothing on its own.",
  "whatItIs": "IANA has no entry for 57797 because RFC 6335 excludes the Dynamic/Private range from assignment. Nmap's nmap-services lists it \"unknown\" at 0.000228, one of the lowest frequencies still inside the default top-1000 TCP set. The SANS ISC port page has an empty service field. For an obscure port this is the whole truth: registered to nobody, rarely seen, never identified.",
  "exposure": {
    "verdict": "careful",
    "note": "Identify the binding process before making any exposure decision; the port number carries no information."
  },
  "checkCommand": "sudo lsof -nP -iTCP:57797 -sTCP:LISTEN",
  "links": [
    {
      "title": "RFC 6335 — Dynamic Ports (49152-65535)",
      "url": "https://www.rfc-editor.org/rfc/rfc6335.html",
      "kind": "spec"
    },
    {
      "title": "IANA port registry — search 57797",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=57797",
      "kind": "iana"
    }
  ]
}