{
  "port": 3878,
  "protocol": "tcp",
  "service": "FotoG CAD interface (registered)",
  "oneLiner": "Registered for the CAD interface of FotoG, a close-range photogrammetry package.",
  "whatItIs": "IANA registers 3878 as fotogcad, \"FotoG CAD interface\", to a private assignee. FotoG was a close-range photogrammetry product used to build measured 3D models from photographs — the registered port is its link to a CAD application, not a general-purpose network service. No protocol documentation is public and the software is not in current circulation. Expect to never see this on a scan.",
  "exposure": {
    "verdict": "never",
    "note": "A local application-to-application interface with no documented authentication has no reason to be reachable off the workstation."
  },
  "checkCommand": "sudo lsof -nP -iTCP:3878 -sTCP:LISTEN",
  "links": [
    {
      "title": "IANA port registry — 3878 (fotogcad)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=3878",
      "kind": "iana"
    }
  ],
  "ianaName": "fotogcad"
}