Behavior Differences Between Windows 2000 and Windows NT 4.0 IAS

A previous version of IAS was released with the Windows NT 4.0 Option Pack. The following section describes the differences in behavior between the two versions.

Windows NT 4.0 IAS Behavior

• If no domain name is specified during authentication, the IAS server authenticates the user against only the local SAM database.
• IAS does not use the callback permissions for all user objects. IAS
• IAS log files are written in ASCII.

Windows 2000 IAS Behavior

• IAS resolves a user name with no domain specified by using the following sequence:
  1. IAS determines a default domain from the registry, if one is specified there.
  2. If the IAS server is a member of a domain, IAS authenticates the user against that domain.
  3. If the IAS server is not a member of a domain, IAS authenticates the user against the local SAM database.
• IAS uses the callback permissions for all user objects.
• IAS log files are multi-language and are written in UTF-8.

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