Authentication

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Authentication

Use the Authentication property page to specify authentication methods an NNTP client is allowed to use to access information on the Microsoft Exchange Server computer. Authentication is the process the NNTP server uses to determine whether to grant the user permission to connect to the system. In order for an NNTP client to log on to the Microsoft Exchange Server computer, one of the authentication methods that the client supports must be enabled on the server. Check with your client's vendor if you are unsure of which authentication methods are available.

To use SSL, IIS must be installed on the Microsoft Exchange Server computer before Microsoft Exchange Server is installed. For more information about configuring IIS, see "Requiring Secure SSL Connections" earlier in this chapter.

Getting to the Authentication property page

In the Administrator window, choose a site or server, and then choose Protocols.
Double-click NNTP (News) Site Defaults to configure site NNTP defaults, or NNTP (News) Settings to configure server NNTP settings.
Select the Authentication tab.

Setting Authentication Methods

Note If Windows NT Challenge/Response is enabled on the Microsoft Exchange Server computer, Microsoft Internet Mail and News version 3.0 will attempt to connect to the Microsoft Exchange Server computer using Windows NT Challenge/Response. If authentication using this method fails, Internet News will try to connect to the Microsoft Exchange Server computer using basic clear-text authentication.

Select the Authentication tab.
In the Authentication box, select an authentication type.

Option Description

Basic (Clear Text) Enable authentication through an unencrypted user name and password. Most NNTP clients support this method.

Basic (Clear Text) using SSL Use SSL protocol to encrypt clear text.

Windows NT
Challenge/Response Enable authentication through Windows NT network security and an encrypted password. This method is supported by Microsoft Internet Mail and News version 3.0 and later.
With Windows NT Challenge/Response, it is not possible to specify the name of the Microsoft Exchange Server mailbox you want to access. By default, Microsoft Exchange Server attempts to access the mailbox with the same name as the Windows NT user account that the user is logged on as. For example, if you are logged on as Domain\Suzanf, with Windows NT Challenge/Response enabled, Microsoft Exchange Server attempts to access the mailbox called Suzanf.

Windows NT
Challenge/Response using SSL Enable authentication using Windows NT network security to occur through an SSL-encrypted channel on port 563. This method will be supported by future versions of Microsoft Internet Mail and News.

MCIS Membership System Enable authentication using Windows NT network security to occur through the Microsoft Commercial Internet Server (MCIS) Membership System.

Option	Description
Basic (Clear Text)	Enable authentication through an unencrypted user name and password. Most NNTP clients support this method.
Basic (Clear Text) using SSL	Use SSL protocol to encrypt clear text.
Windows NT Challenge/Response	Enable authentication through Windows NT network security and an encrypted password. This method is supported by Microsoft Internet Mail and News version 3.0 and later. With Windows NT Challenge/Response, it is not possible to specify the name of the Microsoft Exchange Server mailbox you want to access. By default, Microsoft Exchange Server attempts to access the mailbox with the same name as the Windows NT user account that the user is logged on as. For example, if you are logged on as Domain\Suzanf, with Windows NT Challenge/Response enabled, Microsoft Exchange Server attempts to access the mailbox called Suzanf.
Windows NT Challenge/Response using SSL	Enable authentication using Windows NT network security to occur through an SSL-encrypted channel on port 563. This method will be supported by future versions of Microsoft Internet Mail and News.
MCIS Membership System	Enable authentication using Windows NT network security to occur through the Microsoft Commercial Internet Server (MCIS) Membership System.