{
  "port": 1033,
  "protocol": "both",
  "service": "netinfo-local",
  "oneLiner": "Registered as Apple's local NetInfo port — a directory service Apple removed from macOS years ago.",
  "whatItIs": "IANA assigns 1033 to `netinfo-local`, \"local netinfo port\", registered in 2002 by an Apple engineer. NetInfo was the directory and configuration database used by NeXTSTEP and early Mac OS X; Apple replaced it with Open Directory and dropped it entirely, so no current macOS ships a NetInfo daemon. Finding 1033 open today therefore is not NetInfo — on older Windows it is another endpoint from the pre-Vista 1025-5000 dynamic RPC range, and elsewhere it is an application that took a free low port.",
  "exposure": {
    "verdict": "careful",
    "note": "The registered service is extinct, so an open 1033 is an unidentified listener; a directory or RPC service found here should stay on a private network."
  },
  "checkCommand": "sudo lsof -nP -iTCP:1033 -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"
    }
  ]
}