With Windows Authentication selected, click on the Providers link in the right Action panel If the Windows Authentication entry is missing, you have to add the feature by using Windows' Server Manager ( Server Roles > Web Server (IIS) > Web Server > Security > Windows Authentication ). NTLM, Kerberos and Negotiate protocols are implemented by Security Support Providers in kernel mode. Negotiate is not authentication protocol itself, it’s a module used to negotiate one — Kerberos or NTLM. The only way to enable Kerberos in IIS is by enabling Negotiate for Windows Authentication.

Jun 09, 2011 · A new feature in Windows 2008 IIS7 is the kernel mode support, what does it do, and more important how can it help you? Kerberos works with Service Principal Names (SPN’s). Each service you want to contact with kerberos authentication requires an SPN registered in Active Directory. Nov 07, 2011 · SharePoint 2010 supports two authentication mode: Classic mode and Claims based. Today I’m going to explain how to configure Kerberos authentication for an web application with classic mode Authentication. I’ll try to explain how to configure Kerberos for an web application with Claims based authentication later.