In the past I had my router at home (debian server) who was acting as a DHCP server, DNS server and NAT between Internet and my network. Now, I need to replicate this at the office where I work. However, I have different parameters needed now.
We have two internet connections: one cable and one VDSL. We want to be able to receive both connection into our debian server (so 2 inputs) but only keep one network in our LAN (so 1 output). However, we want specific computer (IP from 10 to 20) to access Internet A and specific computer (IP from 21 to 30) to access Internet B. We do not need failover and/or loadbalacing.
I did my research on Google and I have found tutorials about how to do "multiple connection" part. I am about to try it. But the problem I have is to assign a specific computer to a specific Internet connection?