Registered as UNICALL, but in practice this is the HTTPS management interface of an Aruba wireless controller.
IANA's entry for 4343 is UNICALL, a telephony signalling registration you will effectively never meet. What actually shows up on scans is HPE Aruba networking gear: ArubaOS mobility controllers and Aruba Central On-Premises serve their administrative WebUI over HTTPS on 4343 alongside 443. No Aruba port list is linked here, so the identification rests on what the device answers rather than on a citable document. A TLS handshake and a login page here identify the device immediately.
Do not expose
This is the full administrative plane of a wireless infrastructure controller — restrict it to a management VLAN or jump host, never publish it.
$ curl -sk -o /dev/null -w '%{http_code}\n' --max-time 5 https://TARGET:4343/Seen 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.