{
  "port": 5961,
  "protocol": "tcp",
  "service": "Unassigned / VNC display :61",
  "oneLiner": "No IANA assignment; VNC display :61 if anything.",
  "whatItIs": "5961 sits in IANA's Unassigned 5915-5962 range with no service name or assignee. The only convention that touches it is RFB's 5900+display mapping, giving display :61. Everything else here is ad-hoc: an application that grabbed a free port, or a forwarded tunnel endpoint.",
  "exposure": {
    "verdict": "never",
    "note": "Treat an unknown listener in this block as a remote-control surface until you have identified it; do not publish it."
  },
  "checkCommand": "nmap -Pn -sV -p 5961 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": "nmap-services — the port-frequency database",
      "url": "https://github.com/nmap/nmap/blob/master/nmap-services",
      "kind": "github"
    }
  ]
}