WCF Service Tier - Use delegation to pass users identity across physical bounderies - how do you do this for Novell?

Question

I have a WCF n-tier solution. When used in a Microsoft AD shop i can specify a domain account in AD that can use delegation so when i run the WCF servics under that account i can pass the users logged in identity across physical bounderies and to the ultimate destination - is this possible to do in a Novell shop? Does Novell offer a similiar way that will allow the users identity to be passed across the physical bounderies?

Thanks