Unassigned at IANA, sitting one below the PlanetPress Suite Messenger registration on 5863.
IANA registers 5863 to ppsuitemsg (PlanetPress Suite Messenger) but leaves 5862 empty, and no common product defaults to it. Adjacency is not evidence — a service on 5862 has no necessary relationship to its registered neighbour. As with the rest of the unassigned 58xx block, identify the listener directly.
Expose with care
Unknown service on an unregistered port. Determine what it is before allowing traffic to it.
$ sudo lsof -nP -iTCP:5862 -sTCP:LISTENSeen 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.