{
  "port": 33899,
  "protocol": "tcp",
  "service": "Unassigned",
  "oneLiner": "Unregistered and unnamed in scanner databases; open on well under a tenth of a percent of hosts.",
  "whatItIs": "33899 has no IANA assignment and no service name in Nmap's database, which records it open on about 0.04% of scanned hosts. Like everything between 32768 and 60999 it doubles as a Linux ephemeral port, so an open socket here is as likely to be an outbound connection as a service. Identify it by the process, not by the number.",
  "exposure": {
    "verdict": "careful",
    "note": "Nothing about the port number tells you whether it is safe; run a version scan or check the owning process before allowing it through a firewall."
  },
  "checkCommand": "nc -vz -w 3 TARGET 33899",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 33899",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=33899",
      "kind": "iana"
    },
    {
      "title": "nmap/nmap — nmap-services (port frequency database)",
      "url": "https://github.com/nmap/nmap/blob/master/nmap-services",
      "kind": "github"
    }
  ]
}