You can configure the Windows NT Challenge/Response authentication feature to verify a user's identity and grant access Web sites, files, or directories. Windows NT Challenge/Response authentication uses a cryptographic technique for authenticating users, and does not require the user to transmit actual passwords across the network. For more information, see About Authentication.
Important
- You can use Windows NT Challenge/Response authentication only if the user's browser supports this authentication method. Microsoft Internet Explorer, version 2.0 or later, is the only browser that currently supports Windows NT Challenge/Response authentication.
- When you set security properties for a specific Web site, you automatically set the same security properties for directories and files belonging to that site, unless the security properties of the individual directories and files have been previously set.
- Your Web server will prompt you for permission to reset the properties of individual directories and files when you attempt to set security properties for your Web site. If you choose to reset these properties, your previous security settings will be replaced by the new settings. The same condition applies when you set security properties for a directory containing subdirectories or files with previously set security properties. For more information about setting properties, see Properties and Inheritance of Properties on Sites in About Web Sites.
To enable Windows NT Challenge/Response authentication
- In Internet Service Manager, select a Web site, directory, or file, and open its property sheets.
- Select the appropriate Directory Security or File Security property sheet. Under Anonymous Access and Authentication Control, click Edit.
- In the Authentication Methods dialog box, select the Windows NT Challenge/Response check box.
Note Your server will not switch to another authentication method if the user is initially denied access.
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