Gunit,

You mentioned 3 flavors of VPN, Not to get confused or anything, Doesnt IPSEC ride on the L2TP Protocol? I could be wrong, but i am pretty sure I will be corrected if I am :-)

My point being, would it then actually be considered a additional flavor or just a protocol that rides on on the L2TP implementation??

http://www.microsoft.com/windows2000...l2tpclient.asp

let me know, id like to know if I happen to be wrong here :-) !!

About Microsoft L2TP/IPSec VPN Client

With the release of Windows 2000, Microsoft introduced the Layer Two Tunneling Protocol with Internet Protocol security (L2TP/IPSec) VPN protocol as a highly secure and interoperable alternative to the well-established Point-to-Point Tunneling Protocol (PPTP) that was already supported on all Windows platforms and most commercial VPN servers. L2TP takes advantage of existing mechanisms for user authentication and client configuration. L2TP/IPSec uses IPSec to provide mutual authentication between the user's computer and the VPN server and strong encryption for all of the data exchanged between the client and the server.

Here is some more info I found... its from that link i posted above.