NTLM Authentication and RTC
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8/28/2008
NTLM is a Windows challenge response authentication system that uses Windows domain credentials for authentication.
The Windows domain controller challenges the client to perform a complex mathematical calculation on the user's domain password and then send this encrypted password to the domain controller.
The domain controller then uses the same calculation to decrypt the password. If the decoded password matches the password obtained from the Security Account Manager (SAM) database, the client is authenticated.
An RTC client application can specify RTCAU_NTLM in the <allowedauth> tag of the provisioning profile to indicate that the client will accept NTLM when challenged by the server. For more information about provisioning profiles, see Provisioning and XML Profiles.