Has anyone ever figured out how to use FIDO2 with Discourse behind a reverse proxy? I’m having this issue using the web.socketed.template.yml template with a forum behind a Cloudflare Tunnel. Neither Yubikey 2FA nor the new Passkey logins are working for me.

Is this on a dev environment? You might need to override this bit temporarily: lib/discourse_webauthn.rb main end ## # Clears the challenge from the user's server session. # # @param user [User] the user to cle…

No, this is a production install.

What error messages are you getting?

What is the full URL of the failed request, /auth.json?

Ah, no: /session/passkey/auth.json

Ok, so your server thinks that it is not running on the hostname that the browser is requesting. The security key / passkey generation procedure has to ensure that the the hostname of the browser matches that of the server (keys are generated per hostname). Can you log into your Rails console and c…

Note, this could be a http vs https issue as well. I see the logo is looking for a URL under http:// on your site.

What do you get for Discourse.base_url in the console?

How to use FIDO2 with Discourse behind a reverse proxy?

Support Self-hosting

JonahAragon1 (Jonah Aragon) January 9, 2024, 8:57pm 10

Discourse.current_hostname does match the URL I use to access the site. Is there a way to see what Discourse thinks the hostname my browser is requesting is?

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How to use FIDO2 with Discourse behind a reverse proxy?

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