1 Introduction

The NT LAN Manager (NTLM) Authentication: Network News Transfer Protocol (NNTP) Extension specifies the use of NTLM authentication by NNTP to facilitate client authentication to an NNTP server. For more information about NTLM authentication, see [MS-NLMP].

NNTP specifies a protocol for the distribution, inquiry, retrieval, and posting of news articles by using a reliable stream-based transmission of news. For a detailed definition of NNTP, see [RFC977].

This extension uses the NNTP AUTHINFO GENERIC command and NNTP response codes to negotiate NTLM authentication and send authentication data. The NNTP AUTHINFO GENERIC command is specified in [RFC2980] section 3.1.3.

Sections 1.5, 1.8, 1.9, 2, and 3 of this specification are normative. All other sections and examples in this specification are informative.