Port Forwarding without NAT on an old Kernel
I have two subnets on my network. On one there is a Linksys router which connects to the Internet. There is also a Linux box connecting this subnet to a second one. I want to set up a couple servers on the second subnet, but the Linksys box won't let me forward ports to an IP on a different subnet. So my plan is to set up port forwarding on the Linux router, and have the Linksys forward to it. However, my problem is that I don't want to use NAT on this box. Also, this box is running a 2.0 series kernel (it's a cobalt microserver, otherwise I'd use something a bit more modern...). I've read you can use rinetd.d to forward ports with it, though.