Add 2FA in OPNsense NGINX reverse proxy

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OPNsense version of NGINX supports "auth_request" only very limited. 2FA apps like Authelia as authentication provider are not possible behind OPNsense's NGINX version. Nevertheless, you do not have to do without 2FA completely.

Okko

Fritzbox behind OPNsense

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Fritzbox is a German router brand. Almost everyone in Germany has a Fritzbox. This router is known to work day and night. Unfortunately, you can configure almost nothing and debug very little, which makes the transition very difficult.

Okko