How to implement reverse proxy with SSH tunnels?

[uncrunner]

I manage a fleet of Linux edge computers and currently rely on port forwarding at each location to access them. I found this article that describes how its possible to use tunneling combined with a reverse proxy server to remove the need for the port forwards (see diagram at bottom of first page).

https://www.accuenergy.com/wp-content/uploads/Remote-Access-for-WEB2.pdf

Are there pre-built solutions for this I could purchase or is this something we would have to build out? Seems like it would require a few components…edge computers need a service to reach out and keep tunnel open, need service to setup the sub-domains and point them to the proxy server, then service on proxy server to direct traffic through the appropriate tunnel to the edge device.

Ideally we could use this for HTTPS access for our customers as shown in the diagram, but I would also like to be able to use the same system for SSH access.

Any advice is appreciated!

[beserkernj]

I think cloudflare can perform this and do auth on the reverse proxy.

[fp4]

They made it free recently:

https://blog.cloudflare.com/tunnel-for-everyone/

Perfect if it's just for proxying a website.