{
  "port": 1055,
  "protocol": "tcp",
  "service": "ANSYS License Manager (FlexNet)",
  "oneLiner": "ANSYS's FlexNet license server — the lmgrd port that every ANSYS install checks out licenses from.",
  "whatItIs": "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.",
  "exposure": {
    "verdict": "never",
    "note": "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."
  },
  "checkCommand": "lmutil lmstat -a -c 1055@TARGET",
  "links": [
    {
      "title": "ANSYS Licensing Guide — Understanding Port Numbers",
      "url": "https://ansyshelp.ansys.com/public/Views/Secured/corp/v242/en/ai_elg/aiELG_portnums.html",
      "kind": "official-docs"
    },
    {
      "title": "IANA Service Name and Transport Protocol Port Number Registry",
      "url": "https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml",
      "kind": "iana"
    }
  ]
}