ANSYS's FlexNet license server — the lmgrd port that every ANSYS install checks out licenses from.
ANSYS registered 1055 with IANA for FlexNet (and 2325 for its Licensing Interconnect), and its documentation names 1055 as the port lmgrd listens on. An ANSYS workstation is pointed at 1055@licenseserver, contacts lmgrd there, and is then redirected to the ansyslmd vendor daemon, whose port is random by default unless an admin pins it with PORT= on the VENDOR line. On a scan, 1055 marks an engineering-simulation license server, which usually sits on a well-connected internal host because every CAE seat in the building depends on it. Firewall guidance from ANSYS is to open 1055, 2325, and whatever static vendor-daemon port the license file specifies.
Do not expose
FlexNet license servers have no user authentication and a long CVE history in lmgrd/lmadmin; keep them on the engineering network and reach them over a VPN, never from the internet.
$ lmutil lmstat -a -c 1055@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.
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