{
  "port": 3324,
  "protocol": "tcp",
  "service": "active-net (Active Networks)",
  "oneLiner": "Third port of the Active Networks 3322-3325 reservation; unused in practice.",
  "whatItIs": "IANA lists 3324 only as part of the `active-net` block 3322-3325, Active Networks, registered by Bob Braden at ISI. The registration predates the modern registry's requirement for a contactable specification, and no active-networking implementation ever reached deployment, so the entry survives as a historical marker. Nothing in common use listens on 3324. Whatever you find there was configured by hand and should be identified directly.",
  "exposure": {
    "verdict": "careful",
    "note": "An open 3324 is an unidentified listener; fingerprint it rather than trusting the `active-net` label a scanner prints."
  },
  "checkCommand": "nc -vz TARGET 3324",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml",
      "kind": "iana"
    }
  ]
}