{
  "port": 6567,
  "protocol": "tcp",
  "service": "reserved (formerly esp)",
  "oneLiner": "Reserved at IANA; older service tables still call it esp, the eSilo Storage Protocol.",
  "whatItIs": "The current IANA registry marks 6567 as Reserved, with no service name and no assignee. Legacy service tables, including nmap-services, still print it as esp, \"eSilo Storage Protocol\" — a name that outlived its vendor and now survives mostly as a scanner label. Nothing in common use listens here, so a scanner reporting \"esp\" on 6567 is guessing from a name table, not from a probe response.",
  "exposure": {
    "verdict": "careful",
    "note": "Do not trust the service name your scanner prints for this one; identify the actual process before deciding what the exposure is."
  },
  "checkCommand": "sudo lsof -nP -iTCP:6567 -sTCP:LISTEN",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 6567",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=6567",
      "kind": "iana"
    },
    {
      "title": "nmap-services (Nmap's port/service frequency database)",
      "url": "https://github.com/nmap/nmap/blob/master/nmap-services",
      "kind": "github"
    }
  ]
}