Lansweeper will attempt to authenticate via Kerberos first, falling back to NTLM if this fails. This does mean though that if Kerberos is available, NTLM will effectively not be used by Lansweeper when scanning domain-connected Windows devices.
~~~~~~~ (〃 ̄︶ ̄)人( ̄︶ ̄〃) ~~~~~~~
Sweep that LAN, sweep it!