{
  "port": 163,
  "protocol": "tcp",
  "service": "CMIP/TCP Manager",
  "oneLiner": "The manager side of CMOT, the OSI network-management protocol that SNMP beat.",
  "whatItIs": "Port 163 is registered as `cmip-man`, the CMIP-over-TCP manager, with 164 as the agent side. CMOT — CMIP over TCP/IP, RFC 1189 — was the OSI-flavored competitor to SNMP for managing IP networks, and it lost decisively; the RFC itself was later reclassified as historic. Telco OSS systems were the only real deployments, and those are gone or isolated. You will not meet this on a general-purpose network.",
  "exposure": {
    "verdict": "never",
    "note": "A network-management plane with no modern security story. If something is genuinely speaking CMIP, it belongs on an isolated management network."
  },
  "checkCommand": "nc -vz TARGET 163",
  "links": [
    {
      "title": "RFC 1189 — Common Management Information Services and Protocols for the Internet (CMOT and CMIP)",
      "url": "https://www.rfc-editor.org/rfc/rfc1189.html",
      "kind": "spec"
    },
    {
      "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"
    }
  ]
}