Remember the Cisco vpnclient?

urpme vpnclient- dkms-vpnclient-

Oh yes.

And on the other hand:

cisco on windows

If you think about it, that's the only way to go. Gutter to gutter, trash to trash.

PS: After one day of usage, I actually like it. My main system is unaffected, and runs the "normal" connection. In parallel and a VirtualBox, Windows offers the encrypted connection to my office. Not bad at all.