I've setup site-to-site ASA 5510 using L2TP, I've also setup RRAS on windows 2003, and run Demand Dial Interface Wizard to setup L2TP connect to ASA.
What stucks me is "Dial Out Credentials" page on this Wizard.
If I leave all the fields blank it can not proceed futher, so I add imaginary user here. But, on the ASA side there is no user account to add while running IPSec site-to-site wizard. So with this imaginary user account on the Windows side and no user account on the ASA side, I try to connect them (from Windows machine). Looking at the ASDM Log Viewer, I notice that both Phases are completed succefully, but then the message "IP=xxxx.xxxx.xxxx.xxxx, Received encrypted packet with no matching SA, dropping", appears on Log Viewer, and on Windows 2k3 side I get a message "An error occurred during connection of the interface. The local computer does not support the required data encryption type".
I google for L2TP ASA RRAS, but found nothing really of my case.
Has someone ever get this work? If so, what else should I pay attention at?