{
  "port": 20005,
  "protocol": "both",
  "service": "OpenWebNet",
  "oneLiner": "IANA's registration for OpenWebNet, the BTicino/Legrand MyHOME home-automation protocol.",
  "whatItIs": "OpenWebNet is the ASCII command protocol BTicino and Legrand use to drive MyHOME BUS/SCS installations — lights, shutters, thermostats, alarm — through an IP gateway. IANA assigned 20005 to BTicino for it, but shipping gateways and the client libraries that talk to them default to TCP 20000, so 20005 is the registered number rather than the one you usually meet. Nmap's table additionally carries the historical name 'btx' on 20005/tcp for German Telekom's CEPT videotex service, long dead. A hit here in a building or residential network is almost always a MyHOME gateway.",
  "exposure": {
    "verdict": "never",
    "note": "OpenWebNet is cleartext and gateway authentication is a short numeric password at best. Exposing it hands out control of the building's lighting, HVAC and alarm."
  },
  "checkCommand": "nmap -Pn -sV -p 20005 --reason TARGET",
  "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"
    },
    {
      "title": "openHAB OpenWebNet binding documentation",
      "url": "https://www.openhab.org/addons/bindings/openwebnet/",
      "kind": "official-docs"
    },
    {
      "title": "Legrand Developer portal",
      "url": "https://developer.legrand.com/",
      "kind": "official-docs"
    }
  ]
}