{
  "port": 340,
  "protocol": "tcp",
  "service": "Unassigned",
  "oneLiner": "Unassigned in the IANA registry, with no protocol or product convention behind it.",
  "whatItIs": "There is no IANA entry for 340 on either transport; the block from 334 through 343 is empty. Nmap records it as \"unknown\" on both TCP and UDP with a small open rate, meaning some hosts do answer but no consistent service explains them. Nothing about the number implies a protocol, an encoding, or an authentication model. Probe the listener and identify it on its own evidence.",
  "exposure": {
    "verdict": "careful",
    "note": "Unregistered and unidentified — nothing here justifies internet exposure until you know what process is bound to it."
  },
  "checkCommand": "nmap -sV -p 340 TARGET",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 340",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=340",
      "kind": "iana"
    }
  ]
}