{
  "port": 2393,
  "protocol": "tcp",
  "service": "Microsoft OLAP (legacy)",
  "oneLiner": "A Microsoft OLAP registration from the pre-Analysis-Services era; dormant today.",
  "whatItIs": "IANA registers 2393 as ms-olap1, \"MS OLAP 1\", one of a block Microsoft took for its OLAP server work alongside 2394 (ms-olap2), 2382 (ms-olap3) and 2383 (ms-olap4). Current SQL Server Analysis Services documentation only ever names 2383 for the engine and 2382 for the SQL Server Browser redirector, so 2393 is a historical reservation rather than a port modern SQL Server binds. Anything answering here today should be identified by process rather than assumed to be Microsoft OLAP.",
  "exposure": {
    "verdict": "never",
    "note": "If something genuinely OLAP-shaped is listening it is a database engine, and if it is something else you do not know what it is — neither belongs on a public interface."
  },
  "checkCommand": "sudo lsof -nP -iTCP:2393 -sTCP:LISTEN",
  "links": [
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry — 2393 (ms-olap1)",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=2393",
      "kind": "iana"
    },
    {
      "title": "Microsoft Learn — Configure the Windows Firewall to Allow Analysis Services Access (documents 2382/2383)",
      "url": "https://learn.microsoft.com/en-us/analysis-services/instances/configure-the-windows-firewall-to-allow-analysis-services-access",
      "kind": "official-docs"
    }
  ],
  "ianaName": "ms-olap1"
}