{
  "port": 3011,
  "protocol": "both",
  "service": "trusted-web (registered)",
  "oneLiner": "Registered as Trusted Web, one of a pair with 3012 (Trusted Web Client), and rarely seen.",
  "whatItIs": "IANA registers 3011 as trusted-web and 3012 as twsdss, \"Trusted Web Client\" — a server/client pair from a 1990s commercial product of that name. No public specification survives and there is no maintained implementation, so the names outlive the software. A listener on 3011 today is almost certainly an unrelated application that grabbed a free port.",
  "exposure": {
    "verdict": "careful",
    "note": "\"Trusted\" is a product name, not a property of the port — find out what is actually listening before treating it as safe."
  },
  "checkCommand": "sudo lsof -nP -iTCP:3011 -sTCP:LISTEN",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 3011 (trusted-web)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=3011",
      "kind": "iana"
    }
  ],
  "ianaName": "trusted-web"
}