vouch-proxy VS caddy-auth-portal

Look into vouch proxy

Vouch proxy is designed for this usage: https://github.com/vouch/vouch-proxy I don't think there are any nice UIs to configure it though so you'll need to be familiar with running it yourself.

Not sure this is a "best practice", but it lets me keep control of the Ingress resources inside their YAML configs. I've also layered Vouch Proxy into the ingress configurations to require SSO/MFA auth to access the resources behind the Ingress. Cloudflare has the ability to do this, but I found it cumbersome to keep track of the configs outside the K8s cluster.

I've used vouch proxy for my own stuff previously, before more recently moving to Cloudflare Access. vouch can be slightly janky at times to get working right, but once set up, it's been solid.

For example: nginx -> Vouch proxy -> KeyCloak -> Jellyfin

While this works, we were hoping to make access a bit easier with say an OpenID Connect SSO and reverse-proxy solution. I've seen Vouch Proxy, https://github.com/vouch/vouch-proxy which is really just SSO on top of nginx, but I'm wondering if there's a simpler way to do this.

You seem to be quite knowledgeable and a minimal provider with just the bare minimum would suffice for you. Have a look at Vouch Proxy, it does one thing and it does it well.

Caddy Auth Portal. Also has the advantage of providing unified secure 2FA.

I am very happy with the this caddy extension: https://github.com/greenpau/caddy-auth-portal.

Sorts this precise use case for me, need for common login provider. Without the banality of basic auth.

Check out caddy-auth-portal

After dabbling with Caddy's auth-portal, nginx Vouch proxy, Keycloak and Authelia I found Authentik.

Usually with this plugin: https://github.com/greenpau/caddy-auth-portal

There’s caddy-auth-portal which I’ve not used myself, but heard good things about.

I hope this post helps setting up your SSO with Caddy. I'd highly recommend trying it out if you find yourself always needing to authenticate with different services on your domain – and check out caddy-auth-portal's docs for even more advanced features!

This sounds like an XY Problem. It sounds like you're missing a good IAP solution to deal with access controls. Something like oauth2_proxy, Keycloak, Pomerium, etc. Hell, I've even set up a basic IAP with Caddy and Oauth Portal.