SSO - Windows AD - CRM WebUI

Hi,

My client wants to have SSO between Windows AD account (used for login in Desktop) and CRM WebUI.

Client uses SAP CRM 7.0 EHP3 and does not have any AS JAVA system in landscape.

I have read old wiki and blogs which mentions to achieve SSO to CRM WebUI via SAP GUI for Windows SNC feature.

However, client does not login in SAPgui.

Client directly opens CRM_UI with link of format

http://hostname:port/sap/bc/bsp/sap/crm_ui_start/default.htm

As we are having latest CRM version, is there a better way to configure SSO between Windows AD (LDAP) and CRM WebUI?

Any pointer would be useful.

Thanks.