{
  "port": 3369,
  "protocol": "both",
  "service": "satvid-datalnk (Satellite Video Data Link)",
  "oneLiner": "One of five ports IANA reserved in 1990s-era block 3367-3371 for a satellite video data link; effectively never seen.",
  "whatItIs": "IANA registers 3367-3371 as a single range, satvid-datalnk, \"Satellite Video Data Link\", to Scott Engel — with no protocol restriction, no RFC, and no public specification. No open-source or mainstream commercial product implements it. Nmap's service-frequency data ranks 3369/tcp near the bottom of what its scans ever find open. If something is listening here it is almost certainly an unrelated application that picked a free high port, not satellite video.",
  "exposure": {
    "verdict": "careful",
    "note": "Nothing standard listens here, so an open 3369 is an unidentified service — find the owning process with lsof or ss before deciding anything about it."
  },
  "checkCommand": "nmap -Pn -sV -p 3369 TARGET",
  "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"
    }
  ]
}