{
  "port": 3851,
  "protocol": "tcp",
  "service": "SpectraTalk (registered)",
  "oneLiner": "Registered as \"SpectraTalk Port\" with nothing public behind the name.",
  "whatItIs": "IANA registers 3851 as spectraport, \"SpectraTalk Port\", to a private assignee. No specification, vendor documentation, or implementation for SpectraTalk is publicly available, and it does not appear in the common scanner fingerprint sets as anything meaningful. The registration is the whole of the verifiable story. A listener on 3851 needs to be traced back to a process on the host to be identified.",
  "exposure": {
    "verdict": "never",
    "note": "Undocumented protocol, unknown authentication: there is no basis on which exposing it could be called safe."
  },
  "checkCommand": "sudo lsof -nP -iTCP:3851 -sTCP:LISTEN",
  "links": [
    {
      "title": "IANA port registry — 3851 (spectraport)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=3851",
      "kind": "iana"
    }
  ],
  "ianaName": "spectraport"
}