The default for most clients today is to send LM and NTLM
(both).
On Windows systems, you must fiddle this registry entry:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\LSA\LMCompatibility[Level]
Level | Client | Server |
---|
0-1 | LM, NTLM | Any |
---|
2 | NTLM, NTLM | Any |
---|
3 | LMv2, NTLMv2 | Any |
---|
4 | LMv2, NTLMv2 | NTLM, LMv2, NTLMv2 |
---|
5 | LMv2, NTLMv2 | LMv2, NTLMv2 |
---|
|