Choosing an Authentication Method
Updated: March 28, 2003
Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2
For site-to-site connections, you must implement user-level authentication, and, for greater security, you might decide to implement computer-level authentication as well:
User-level authentication — for all site-to-site connection types.
Computer-level authentication — for L2TP/IPSec connections only.