Basic Authentication in IIS 6.0 (IIS 6.0)

The Basic authentication method is a widely used, industry-standard method for collecting user name and password information. Basic authentication transmits user names and passwords across the network in an unencrypted form. You can use your Web server's encryption features, in combination with Basic authentication, to secure user account information transmitted across the network. To use Basic authentication, grant each user the right to log on locally. For easier administration, add each user to a group that has access to the necessary files.


Enabling Basic authentication does not automatically configure your Web server to authenticate users. You must also create Windows user accounts and set appropriate NTFS permissions. For more information about setting NTFS permissions, see Setting NTFS Permissions for Directories or Files.

This section includes the following information:

Enabling Basic Authentication and Configuring the Realm Name: Describes how to enable Basic authentication and configure the realm name.

Setting the Default Logon Domain: Describes how to set the default logon domain for use with Basic authentication.

Configuring Token Cache for Basic Authentication: Describes how to configure token caching so user tokens are not stored in the cache too long.

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