Scan rules fall into the following categories:

  • Virtualization characteristics. VMware and Hyper-V.
  • Management object checks. WMI or SNMP information.
  • Match all. Always evaluate rule expression to true.
  • Active TCP ports. Check if TCP connection can be initiated.
  • Hostname. Check system hostname.
  • Functional category. Basic role (bridge, firewall, hub ... unknown)
  • Information set checking. Checks temporary XPATH-like objects used by Discovery.