Can a Cloudflare tunnel be used to access a HTTP service on another machine on the same network?

Have you managed to get things working via IP that are hosted on HTTP/HTTPS? Specifically with self signed certs?

I’m testing something, have a GUI I want to login to on my LAN that is self-signed HTTPS, get a 526 bad gateway error (as expected) and don’t know how to get around that. Hosting on HTTP would also work but then it just refused to connect entirely (works locally though).