Below is a diagram of what my network currently looks like. I've been tasked with adding an additional Pix that will be used for Site-to-Site VPNs only. My problem is I don't know where to place the Pix on the network. I don't have a DMZ switch or anything to plug the outside interface of the PIX into. Is there any way to add this additional PIX without putting a switch between the Cisco 1700 Router and the main PIX. Thanks.