IANA name "lam", undocumented — three letters and nothing else.
TCP and UDP 2040 carry the registered service name lam, with no description, assignee or reference in the IANA registry, and the same bare name appears in /etc/services on most Unix systems. There is no published protocol and no common implementation; Nmap sees it open on roughly 0.03% of hosts. The short name collides with unrelated software people recognise, so do not read a product into it.
Expose with care
An unnamed service in practice. Identify the listening process before exposing it anywhere.
$ sudo lsof -nP -iTCP:2040 -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.
Get Beige Box →also available as JSON · Markdown
Corrections or a missing port? Reply @rimrocksystems.