{
  "port": 3971,
  "protocol": "tcp",
  "service": "LANrev server",
  "oneLiner": "The agent-facing port of the LANrev endpoint management server — the product formerly sold as Absolute Manage.",
  "whatItIs": "IANA registers 3971 as lanrevserver. LANrev is client and asset management software: a server plus agents on Windows and macOS endpoints that inventory hardware and software, push packages, and run administrative tasks remotely. It has changed hands repeatedly — originally Pole Position Software's LANrev, sold as Absolute Manage, then HEAT LANrev, and latterly under Ivanti — and the registration is held by the original developer. A listener on 3971 is a management server for a fleet of managed desktops.",
  "exposure": {
    "verdict": "never",
    "note": "This server can install software and execute administrative tasks on every managed endpoint; reaching it from the internet is reaching the fleet. Publish nothing here and require a VPN for off-network agents."
  },
  "checkCommand": "nc -vz TARGET 3971",
  "links": [
    {
      "title": "Ivanti — LANrev 7.3.2 release notes (product and lineage)",
      "url": "https://help.ivanti.com/ht/help/en_US/LANrev/7.3.2/LANrev%207.3.2%20Release%20Notes.pdf",
      "kind": "official-docs"
    },
    {
      "title": "IANA port registry — 3971 (lanrevserver)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=3971",
      "kind": "iana"
    }
  ],
  "ianaName": "lanrevserver"
}