Where the IBM Storage Protect backup server listens for client sessions — registered to a different product entirely.
IBM Storage Protect, formerly Tivoli Storage Manager and Spectrum Protect, sets its TCPPORT server option to 1500 by default; that is the port the server's TCP/IP driver waits on for backup and archive client sessions. The IANA registration for 1500 is the unrelated vlsi-lm ("VLSI License Manager"), so in practice a listener here in an enterprise environment is a backup server, not a licence daemon. Nearby ports follow from it: the default DBMTCPPORT becomes 51500 when TCPPORT is 1500.
Do not expose
A backup server holds every file the estate has ever backed up; keep it on the internal backup network and let only registered clients reach it.
$ nc -vz TARGET 1500Seen 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.
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Corrections or a missing port? Reply @rimrocksystems.