I'm curious how they built this. It's SSH but the IP address is Cloudflare's edge network. It could be using CF Tunnel to transparently route all the SSH sessions to some serving infrastructure, but I didn't know you could publicly serve arbitrary TCP ports like that. Building it in serverless fashion on CF Workers would be ideal for scalability, but those don't accept incoming TCP connections.
Yup! Cloudflare naturally advertises HTTP most heavily and it has fancier routing controls, but it supports arbitrary TCP protocols. > Cloudflare Tunnel can connect HTTP web servers, SSH servers, remote desktops, and other protocols safely to Cloudflare. https://developers.cloudflare.com/cloudflare-one/connections... > In addition to HTTP, cloudflared supports protocols like SSH, RDP, arbitrary TCP services, and Unix…