The default instance of SQL Server Analysis Services — the OLAP/tabular engine behind Excel and Power BI cubes.
Microsoft documents TCP 2383 as the port a default SQL Server Analysis Services instance listens on, and the port a failover-clustered instance always uses regardless of naming. Named instances take a dynamic port instead and rely on SQL Server Browser on TCP 2382 to redirect clients. The listening port comes from the Port setting in msmdsrv.ini (0 means "use 2383 or a dynamic port"), and SSAS uses TCP only — no UDP. On a scan it marks a BI server holding aggregated business data.
Do not expose
An analytical database engine with its own security model and no reason to face the internet — keep it behind the firewall and reach it over a VPN or a gateway service.
$ nc -vz TARGET 2383Seen this on your network? Beige Box scans your Wi-Fi and shows every open port on every device — and its Ports tool links straight back here.
Get Beige Box →also available as JSON · Markdown
Corrections or a missing port? Reply @rimrocksystems.