If we have a Silverlight 4 application which gets its data from an external WCF service and is deployed as a Web Part on in SharePoint 2010 what is the best method to perform authentication in the WCF service itself. The service is not on the
same domain as the SharePoint server but any user authenticated by the SharePoint server (and only those users) should be able to access the service. Since the Silverlight application is calling the service the WCF service itself
must be configured to use BasicHttpBinding which, of course, severely limits possible authentication methods.
View Complete Post