I would like to make some of my self-hosted services externally accessible. Currently I use a VPN to access stuff externally, however this doesn’t work on all use-cases. I also use Tailscale for some things.
I would love to use cloudflare tunnels and another auth solution (like keycloak) to replace Tailscale and the VPN.
Is this feasible?
My end goal would be to setup Immich for my family, and have them not have to worry about Tailscale, a VPN or anything other than some initial login to keycloak (for example)
That’s really up to the software again. If you’re not technically inclined enough to run through the code, that’s fine, but you have to trust that other people are.
Go and search GitHub issues or this project by name for what you’re concerned about.
Authentication is also not security, btw. It’s just access. If you can be more specific about your concerns in your post, you may get more direct answers.