{
  "port": 5959,
  "protocol": "tcp",
  "service": "Unassigned / VNC display :59",
  "oneLiner": "Unassigned by IANA; the plausible listener is VNC display :59.",
  "whatItIs": "5959 has no IANA service name; the registry covers it only as part of the Unassigned 5915-5962 range. Under the RFB 5900+display rule it is display :59. Anything else answering here is a private application that simply picked a free high port.",
  "exposure": {
    "verdict": "never",
    "note": "An unidentified listener in the VNC block should not be reachable from untrusted networks; confirm what owns it locally before opening anything."
  },
  "checkCommand": "nmap -Pn -sV -p 5959 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": "RFC 6143 — The Remote Framebuffer Protocol",
      "url": "https://datatracker.ietf.org/doc/html/rfc6143",
      "kind": "spec"
    }
  ]
}