Registered as PVUNIWIEN; nothing beyond the registration was ever published.
IANA lists 1081/tcp and 1081/udp as pvuniwien, registered to Peter Lipp, with no expansion of the name and no referenced document. No implementation is publicly available. In practice the port matters mostly because it sits one above SOCKS, so scanners and misconfigured proxy clients touch it constantly.
Expose with care
Undocumented registration — treat any listener as unidentified and check whether it is actually a second SOCKS or HTTP proxy instance.
$ nmap -sV -Pn -p 1081 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.
Get Beige Box →also available as JSON · Markdown
Corrections or a missing port? Reply @rimrocksystems.