Veritas NetBackup's Java administration service — the port the NetBackup admin console connects to.
IANA registers 13722 as bpjava-msvc, "BP Java MSVC Protocol", part of the Veritas NetBackup block that also holds bprd (13720), bpdbm (13721), vnetd (13724), bpcd (13782) and vopied (13783). bpjava-msvc is the service the NetBackup Java administration console and remote-admin clients authenticate to, after which it hands the session to a per-user application service on the master or media server. Seeing it means you have found enterprise backup infrastructure, which is high-value: a backup master has credentialed reach into every client it protects.
Do not expose
This is the administration plane of a backup system with agents on every server. Restrict it to the backup management network.
$ nmap -Pn -sV -p 13722 TARGETSeen 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.