{
  "port": 19283,
  "protocol": "both",
  "service": "Sassafras KeyServer (keysrvr)",
  "oneLiner": "The license-management port of Sassafras KeyServer, used by its KeyAccess clients.",
  "whatItIs": "IANA registers 19283 as keysrvr, \"Key Server for SASSAFRAS\", to Sassafras Software, whose KeyServer product does software-license metering and computer-inventory tracking on university and enterprise fleets. Managed machines run a KeyAccess client that talks to the server on this port, which is why it shows up across a whole lab or campus subnet at once. Nmap sees it more often on UDP than TCP.",
  "exposure": {
    "verdict": "never",
    "note": "An internal asset- and license-management service that every managed endpoint trusts. There is no reason for it to answer outside the organization's network."
  },
  "checkCommand": "nc -vz -w 3 TARGET 19283",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 19283 (keysrvr)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=19283",
      "kind": "iana"
    }
  ]
}