The first of FlexNet Publisher's license-manager ports — the daemon that decides whether your CAD or EDA seat starts.
IANA reserves 27000-27009 for Flexera as 'flex-lm'. The FlexNet Publisher license server, lmgrd or lmadmin, binds the first free port in that range, which in practice is nearly always 27000, and vendor daemons listen on separate ports alongside it. Clients are configured with 27000@server and check out floating licenses over it, which is why this port turns up on engineering networks running MATLAB, Cadence, Synopsys, Autodesk and similar tools. The lmutil lmstat client queries it directly.
Do not expose
The license daemon is unauthenticated by design and has a long history of remote vulnerabilities. Keep it inside the engineering network; never publish it, and firewall the vendor-daemon port too.
$ lmutil lmstat -a -c 27000@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.