{
  "port": 3370,
  "protocol": "both",
  "service": "satvid-datalnk (Satellite Video Data Link)",
  "oneLiner": "The middle of IANA's 3367-3371 satellite-video reservation — a registration with no public protocol behind it.",
  "whatItIs": "3370 falls inside the satvid-datalnk range IANA assigned to Scott Engel for a \"Satellite Video Data Link\". There is no RFC, no published wire format, and no widely deployed implementation. In practice the port is free real estate: application servers, test harnesses, and ad-hoc proxies land on it because nothing else claims it. Treat a listener here as unidentified until you have matched it to a process.",
  "exposure": {
    "verdict": "careful",
    "note": "Any exposure decision depends entirely on what is actually bound — identify the process first, because the registration tells you nothing about it."
  },
  "checkCommand": "ss -lntp 'sport = :3370'",
  "links": [
    {
      "title": "IANA port registry — 3367-3371 (satvid-datalnk)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=satvid-datalnk",
      "kind": "iana"
    }
  ]
}