|Can I put a 3rd computer in, that's on the corp. network, then set up a secondary netwrok between it and the 2 Fujitsus and access them that way? |
You could just plug them into a switch and if they're configured with IP's in the same subnet, they could communicate (ie: they would be on the same network). A small 8 port switch that's not plugged into the rest of your network would do the trick. Or, if you have managed switches capable of VLAN tagging, you could use VLAN's to segregate them and still plug them into the same switch as everything else.
If you put them on a subnet that is different from the rest of your network, then there would be no communication between networks isolating them from your main work network.
To connect to that network in this scenario you would need a router to route between the subnets. You could limit access to the two computers by only allowing certain computers to communicate. This would entail setting up a rule in the router that says, "Only IP xxx.xxx.xxx.xxx can communicate" or "Only MAC address xx:xx:xx:xx:xx" can commnicate.
You could even set yourself up with remote connectivity too. You would have to first connect remotely to one of the 'allowed' computers and then connect internally from it to the other network.