1.1 Glossary
The following terms are defined in [MS-GLOS]:
Augmented Backus-Naur Form (ABNF)
NT LAN Manager (NTLM) Authentication Protocol
Security Support Provider Interface (SSPI)
The following terms are specific to this document:
AUTH command: A Post Office Protocol 3 (POP3) optional command that is used to send authentication information as specified in [RFC1734]. The "mechanism" name defined in the RFC is NTLM. The structure of the AUTH command as used in the POP3 AUTHentication Command Protocol Extension is as follows:
AUTH NTLM<CR><LF>
connection-oriented NTLM: One of the two variants of the NT LAN Manager (NTLM) Authentication Protocol.
NTLM AUTHENTICATE_MESSAGE: A packet that defines an NTLM authenticate message that is sent from the client to the server after CHALLENGE_MESSAGE is processed by the client. Message structure and other details of this packet are specified in [MS-NLMP] section 2.2.1.3.
NTLM CHALLENGE_MESSAGE: A packet that defines an NTLM challenge message that is sent from the server to the client. The CHALLENGE_MESSAGE is generated by the local NTLM software and passed to the application that supports embedded NTLM authentication. This message is used by the server to challenge the client to prove its identity. Message structure and other details of this packet are specified in [MS-NLMP] section 2.2.1.2.
NTLM message: A message that carries authentication information. Its payload data is passed to the application that supports embedded NTLM authentication by the NTLM software installed on the local computer. NTLM messages are transmitted between the client and server embedded within the application protocol that is using NTLM authentication. There are three types of NTLM messages:
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NTLM AUTHENTICATE_MESSAGE
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NTLM CHALLENGE_MESSAGE
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NTLM NEGOTIATE_MESSAGE
NTLM NEGOTIATE_MESSAGE: A packet that defines an NTLM negotiate message that is sent from the client to the server. The NEGOTIATE_MESSAGE packet is generated by the local NTLM software and is passed to the application that supports embedded NTLM authentication. This message allows the client to specify its supported NTLM options to the server. Message structure and other details are specified in [MS-NLMP] section 2.2.1.1.
NTLM software: Software that implements the NT LAN Manager (NTLM) Authentication Protocol.
POP3 response: A message sent by a POP3 server in response to a message from a POP3 client. The structure of this message, as specified in [RFC1939], is as follows:
<+OK> <response text><CR><LF>
or:
<-ERR><response text><CR><LF>
MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as described in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.
