3.2.5.3.1.1 NTLM Software Returns Success
The server MUST send a REPLY command to the client, and MUST set AUTH_STATE to challenge_data_sent. The server MUST set the fields of the REPLY command as follows:
AuthenticationType set to 0x0F (NTLM).
Modifier set to 0x00.
NTLM_CommandCode set to NTLM_CHALLENGE.
NTLM_DataSize set to the size of NTLM Data in number of bytes.
NTLM_BufferType set to 0x00000002.
NTLM_Data set to NTLM CHALLENGE_MESSAGE passed from the local NTLM software. Details about how to get the NTLM CHALLENGE_MESSAGE are specified in [MS-NLMP].