Linux Router- No NAT Rumi, May 7, 2018 I assume you have one public IP address for your WAN side, and a block for the LAN side, something like this: ISP—–ROUTER ETH0/ROUTER ETH1——SWITCH——PCs You NEED to have a public IP address for the WAN interface, ISP will route the subnet they have given you through this IP address…. Continue Reading