Chapter 1 What’s New for FortiOS 5.0 : Authentication: users and devices : SSO using a FortiAuthenticator unit : Administrator’s view of FortiAuthenticator SSO authentication : SSO widget
  
SSO widget
You need to configure the Single Sign-On portal on the FortiAuthenticator unit. Go to SSO & Dynamic Polices > SSO > Login Portal to do this. Copy the Embeddable login widget code for use on your organization’s home page. Identity-based security policies on the FortiGate unit determine which users or groups of users can access which network resources.