Policy Server Guides › Policy Server Configuration Guide › User Sessions › Windows User Security Context › Windows User Security Context Requirements › Supported Authentication Schemes

Supported Authentication Schemes

The following authentication schemes are supported:

• Basic Authentication Schemes
• Basic Over SSL Authentication Schemes
• HTML Forms Authentication Schemes
• X.509 Client Certificate and Basic Authentication Schemes
• X.509 Client Certificate and HTML Forms Authentication Schemes

The Web Agent cannot use certificates alone because the user's credentials are not provided. Certificate authentication must be combined with basic or forms to collect the user credentials.

You may want to use the NTLM authentication scheme to provide access to resources in a particular realm, such as those on an intranet. CA does not support selecting the NTLM authentication scheme as part of the Windows User Security Context configuration described in this section. However, you can use NTLM for some resources on a Web server and the Windows User Security Context mechanism (with a supported authentication scheme) for different resources on the same Web server. In that case, the resources accessed using NTLM need to be in a different realm than the resources accessed through the Windows User Security Context mechanism described in this section.