Registered to Oracle's Management Server in its non-secure mode — cleartext management traffic.
IANA registers 5102 as oms-nonsecure, "Oracle OMS non-secure", the unencrypted channel for Oracle's Management Server component of Enterprise Manager. The name is explicit about what it is: the same management traffic as the secure variant, without TLS. Modern Enterprise Manager deployments use HTTPS upload and console ports instead, so a listener here suggests an old or misconfigured install.
Do not expose
A cleartext management channel to a database estate. Disable it in favour of the secure port; anything on the path can read the traffic.
$ nc -vz TARGET 5102Seen 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.