{
  "port": 1107,
  "protocol": "tcp",
  "service": "ISOIPSIGPORT-2",
  "oneLiner": "The second of the two registered ISO IP signalling ports, and just as rare as the first.",
  "whatItIs": "IANA registers 1107 as isoipsigport-2, the companion to 1106. As with its pair, no public protocol document accompanies the registration and Nmap's service-frequency data shows it open on a negligible share of hosts. If you see it, enumerate the listening process rather than trusting the registry name.",
  "exposure": {
    "verdict": "careful",
    "note": "Unknown service on an unused registered port — identify it locally before it faces any untrusted network."
  },
  "checkCommand": "sudo lsof -nP -iTCP:1107 -sTCP:LISTEN",
  "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"
    }
  ]
}