{
  "port": 19315,
  "protocol": "both",
  "service": "Sassafras KeyServer shadow (keyshadow)",
  "oneLiner": "The companion \"key shadow\" port of Sassafras KeyServer, registered alongside 19283.",
  "whatItIs": "IANA registers 19315 as keyshadow, \"Key Shadow for SASSAFRAS\", to the same assignee as 19283 (keysrvr). It belongs to the Sassafras KeyServer license-management system and appears on the same hosts, so finding one usually means finding the other. Outside that product the number has no documented use.",
  "exposure": {
    "verdict": "never",
    "note": "Same reasoning as 19283: part of an internal license-management fabric that managed clients trust implicitly. Keep it inside."
  },
  "checkCommand": "nc -vz -w 3 TARGET 19315",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 19315 (keyshadow)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=19315",
      "kind": "iana"
    }
  ]
}