{
  "port": 2047,
  "protocol": "both",
  "service": "dls (registration only)",
  "oneLiner": "Named dls in the registry, with no description — and not the Directory Location Service, which is port 197.",
  "whatItIs": "IANA lists dls on TCP and UDP 2047 with no description, assignee or reference. The same three letters are also registered at port 197 where they do mean something — Directory Location Service — so the 2047 entry is a name collision rather than the same protocol on a second port. It pairs with dls-monitor on 2048, and neither has published documentation; Nmap sees 2047 open on about 0.02% of hosts.",
  "exposure": {
    "verdict": "careful",
    "note": "No documented protocol and a misleading name. Identify the listening process rather than inferring a service from the label."
  },
  "checkCommand": "sudo lsof -nP -iTCP:2047 -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"
    },
    {
      "title": "nmap-services — Nmap port frequency data",
      "url": "https://github.com/nmap/nmap/blob/master/nmap-services",
      "kind": "github"
    }
  ]
}