I have an security enabled ADF Web Application running on Weblogic Server 10.3.6. SSO for internal users within the domain is implemented and working fine using Desktop SSO (Kerberos). The requirement is for external users, who are outside the domain, to use internet to log into IIS/SharePoint/WSS (Windows SharePoint Service) using the AD credential and then click on the published link to the ADF application with SSO happening without redirect to the login page.
How can i achieve this? Should i use Web SSO like SAML? Please point me to the right direction.