Jordan Crawford’s article sets up the problem of accessing a home server when you don’t have a static IP, can’t configure port forwarding, or have ISP firewalls blocking incoming connections. The solution is to flip the typical connection model: rather than accepting incoming connections, your home server establishes an outbound tunnel to a cloud VPS. You can then use a webserver like Nginx to forward traffic through the tunnel to your home services, converting technical addresses into user-friendly subdomains. I reference this in my Server 102 article as the first half of the relay node solution.