The freeware version of Lansweeper only supports scanning with the LsClient scanning method. No other scanning methods are supported.
More info on LsClient can be found on page 36 and beyond of
our online documentation. LsClient is an executable that is run on the client machine and sends a scan request to your Lansweeper server. When your Lansweeper server receives this request, it scans the client machine. LsClient can be deployed using a logon script or GPO.