{
  "port": 3827,
  "protocol": "tcp",
  "service": "Netadmin Systems MPI service",
  "oneLiner": "An integration port for Netadmin, the Swedish OSS/BSS platform used by fibre and broadband operators.",
  "whatItIs": "IANA registers 3827 as netmpi, \"Netadmin Systems MPI service\", one of a small block the vendor holds alongside 3828 (neteh, event handler) and 3829 (neteh-ext). Netadmin Systems sells an operations- and business-support suite that fibre network operators use to provision subscribers and services, and these ports carry its internal component traffic rather than any subscriber-facing protocol. You will only see this inside a telco or municipal-network operator's management estate.",
  "exposure": {
    "verdict": "never",
    "note": "This is an operator's provisioning plane — it belongs on a management VLAN, never on an interface a subscriber or the internet can reach."
  },
  "checkCommand": "nc -vz TARGET 3827",
  "links": [
    {
      "title": "Netadmin Systems (vendor site)",
      "url": "https://www.netadminsystems.com/",
      "kind": "official-docs"
    },
    {
      "title": "IANA port registry — 3827 (netmpi)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=3827",
      "kind": "iana"
    }
  ],
  "ianaName": "netmpi"
}