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The authentication type describes the security protocol used to exchange authentication information. The type is communicated to the client, providing the information the client needs to interpret and package the data that it exchanges with the server. Different authenticators can have the same type, but validate users against different user databases. Thus, the type only describes how other information is exchanged, not how that information is validated. For example, several authenticators can have the HTTP-BASIC type, but use different user databases.
The server running NetShow Theater Server, and Microsoft® Windows® Media Player supports two types of built-in authentication protocols:
Support for additional protocols will be added in a future release.
The NTLM protocol employs a challenge/response scheme based on the NTLM credentials stored in an NTLM database. HTTP-BASIC is a text-based protocol that transmits Uuencoded strings of user names and passwords over Transmission Control Protocol/Internet Protocol (TCP/IP). The NTLM protocol is more secure, but the HTTP-BASIC protocol is better suited for use with distributed systems over the Internet. Moreover, NTLM is typically only used with NTLM databases. Different authenticators, however, can use HTTP-BASIC with any kind of user database.
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