Thanks kevster, I’ve tried connecting with the fw turned on and off on the XP box. I’ve also allowed ports 50,500,1701and 4500 on the server side. IPSec and L2TP passthrough have been enabled on the Linksys router.
I’ve also tried with the fw off and on on the Linksys router, with the XP client in the DMZ and with port forwarding (the above ports) to a static non-DHCP address. All of these options have been tried in every combination and unfortunately no success so far…