Firewall with Xen included?

[Thomas]

Hi Folks,

i'm looking for a Firewall-Appliance like IPCop, Endian or such a thing with
Xen included. In this case I would be able to design a DMZ with a Desktop
which runs in a virtual Environment directly on the appliance.

Please notice: I'm not looking for a Firewall which runs IN a virtual
Environment ;-)

Any reference welcome.

Regards, Thomas