{
  "port": 9594,
  "protocol": "both",
  "service": "msgsys — Message System",
  "oneLiner": "Registered as \"Message System\"; in practice the middle port of the LANDesk/Ivanti agent's 9593-9595 group.",
  "whatItIs": "IANA lists 9594 as `msgsys`, \"Message System\", with no referenced specification, which is as much as the registry says. It is bracketed by two ports registered to LANDesk's management agent and is observed at the same frequency as them in Nmap's service data, so the practical reading of an open 9594 is the same endpoint-management agent rather than an independent messaging product. There is no public protocol document to point at.",
  "exposure": {
    "verdict": "never",
    "note": "Treat it as part of the management agent it travels with: internal management network only."
  },
  "checkCommand": "sudo lsof -nP -iTCP:9594 -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"
    }
  ]
}