Seamless athentication to Webtop

To do seamless authentication to the webtop in a Windows environment, your only two real options are Kerberos and NTLM (as these are the only two types of authentication tokens that Windows natively supports). It's important to understand though that neither of these methods exposes a user password. So once you've successfully authenticated a user on the client side of APM and exposed the webtop objects, the only usable attribute you have from that client side authentication is the user's username and domain. You cannot do server side NTLM because you'd need a password. You could technically do client side NTLM or Kerberos, but you'd be limited to Kerberos on the server side.