Windows Authentication over the internet

[Remco Bosman]

Hello all,

I'm am faced with an authentication problem. I have the following scenario:

We must build a Windows Forms (C#) application that is run by users that are
not in any domain. The application will access a data access logic layer via
a webservice and we have to implement role based security. So I found the
Security and Authentication Application block from microsoft, very usefull.
Then I playyed around with ADAM and was able to confugure a store for the
application in which i can define groups, tasks and roles etc. This all
wortks fine with the authorization application block using LDAP. But as the
users are not in a domain and certainly not in the domain that would be on
the other end of the internet I'm faced with the "how do I get the correct
Windows Ifdentity", or how can I impersonate as a user defined on the server
that is on the other end.

I have no idea how I can logon to the server on the other end.

Does anybody have a suggestion ??

Remco Bosman