My NAT Setup for DN42
Hey folks, Quick tip for anybody using DN42. If you’re having an issue making your services reachable on the network you can copy something similar to what I’m doing. In my lab, I’m running plain Docker, with a container that has a private IP of 192.168.77.2. To make it reachable from a remote peer over WireGuard, I’m using two NAT rules: one for SNAT and one for DNAT. Why? Because in the DN42 overlay network, only IPs in the 172.20.0.0/14 range are routable. My little slice is 172.22.147.160/27. The whole setup is similar to your home internet with RFC1918 addresses meaning you need to heavily rely on NAT. ...