. . I was using a Cayman DSL router with a 4-port switch built in, so I had one switch port going to the Linksys firewall and then to my inside switch, another switch port going directly to the inside switch, so the switch was carrying both 192.168.200.n traffic and traffic for the fixed IPs.

Right now I just have a one port bridge, so what I'd do is put a cheap 5-port switch between it and the Linksys - plug exposed server into that switch. Same thing, really.