Connect to two Subnets Simultaneously?

[Guest_imported]

I have 3 Windows 98 PCs, one NT4 Workstation with 2 NICs, one Unix box, and a DSL router. The 3 98 PCs have IP's 192.168.1.1-3, NT has 192.168.1.4 on NIC1 and 10.0.0.2 on NIC2, and the Unix box has IP 10.0.0.1. I cannot change the IP addresses of any computers. I can get on the Internet with all Windows computers without problems. The Unix box is not on the Internet, and shouldn't be. But I do need to telnet to the Unix box from all the Windows PCs (currently, I can only do this from the NT machine). Is there something free or very cheap that can be done to make this possible (remember, I can't change the IP addresses of any computer). It seems like there must be a way, but I don't know how...

I know it would be a cinch if I could change the IP address of the Unix box, but that isn't an option here.

 

[DeadEye]

Enable IP forwarding on the NT box ...

 

[jimbopalmer]

If the Unix Box is on both subnets, (just add a second ethernet card) it acts as a router, if you add a -s to routed it acts as a silent router, ie it is not in the route table of your other routers The one thing you can't give for your heart's desire is your heart. - Lois McMaster Bujold