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brokenscripts / authentik_traefik

Authentik behind Traefik
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Authentik 2024+ and Traefik 3.x

Ensure all CHANGEME and domain.tld values are changed to match YOUR environment!

Important changes: Traefik 2.x write up has been renamed from the main branch to traefik2. Traefik 3.x and Authentik 2024.x now reside on the traefik3 branch, which will be the default branch.

Overview

This guide assumes that there is a working Traefik v3.x+ running and that the Traefik network is called traefik. I will also be using the embedded outpost instead of a standalone proxy outpost container.

Additionally, I am NOT allowing Authentik to view the Docker socket (/var/run/docker.sock) and auto create providers.

If you want to learn more on how to setup Traefik or just some more detailed explanation, visit Anand and Smart Home Beginner at https://www.smarthomebeginner.com/.

My folder / repo structure is weird because this is a condensed version of what I have running. I did not want to leave dead links or bad configurations, so modify to your environment.

Authentik is heavier on resources than Authelia, but it is pretty neat!

DNS Records

Ensure that a DNS record exists for authentik.domain.tld as the compose and all material here assumes that will be the record name. This is the bare minimum requirement!

I highly recommend Pi-hole https://pi-hole.net/ for your domain!

Records that are used in this example:

The way I have my records in Pi-hole setup, since all of these are containers:

DNS Records Domain IP
traefik.domain.tld 192.168.1.26

This IP is the host that my containers are running on.

CNAME Records Domain Target
authentik.domain.tld traefik.domain.tld
whoami-individual.domain.tld traefik.domain.tld
whoami-catchall.domain.tld traefik.domain.tld
whoami.domain.tld traefik.domain.tld

Docker Compose setup for Authentik

Authentik's developer has an initial docker compose setup guide and docker-compose.yml located at:

[!NOTE]
https://goauthentik.io/docs/installation/docker-compose
https://goauthentik.io/docker-compose.yml

In order for the forwardAuth to make sense, I've modified the provided docker-compose.yml and added the appropriate Traefik labels. I am also using docker secrets in order to protect sensitive information.

[!NOTE]
I am using "fake" docker secrets and binding them into the compose instead of saving sensitive data in environment variables. You can remove the secrets section and work with regular environment variables if that makes more sense for your environment. This is strictly a working example, hopefully with enough documentation to help anyone else that might be stuck.

First create an environment variable file .env in the same directory as the compose.yaml with the following information, ensuring to update everywhere that has a CHANGEME to match your environment. If you want, these values can all be manually coded into the compose.yaml instead of having a separate file.

Environment Variables File

Check .env for the latest version of the contents below.

.env ```bash ################################################################ # .env # When both env_file and environment are set for a service, values set by environment have precedence. # https://docs.docker.com/compose/environment-variables/envvars-precedence/ # # CANNOT MIX ARRAYS (KEY: VAL) AND MAPS (KEY=VAL) # Ex: Cannot have .ENV var as TZ=US and then a var here as DB_ENGINE: sqlite, has to be DB_ENGINE=sqlite # Otherwise unexpected type map[string]interface {} occurs # https://github.com/docker/compose/issues/11567 # ################################################################ DOCKERDIR=/home/CHANGEME/docker PUID=1100 PGID=1100 TZ=America/Chicago DOMAINNAME=domain.tld ################################################################ #################### Traefik 3 - June 2024 ##################### # Cloudflare IPs (IPv4 and/or IPv6): https://www.cloudflare.com/ips/ ################################################################ CLOUDFLARE_IPS=173.245.48.0/20,103.21.244.0/22,103.22.200.0/22,103.31.4.0/22,141.101.64.0/18,108.162.192.0/18,190.93.240.0/20,188.114.96.0/20,197.234.240.0/22,198.41.128.0/17,162.158.0.0/15,104.16.0.0/13,104.24.0.0/14,172.64.0.0/13,131.0.72.0/22 LOCAL_IPS=127.0.0.1/32,10.0.0.0/8,192.168.0.0/16,172.16.0.0/12 #CLOUDFLARE_EMAIL= # Moved to Docker Secrets #CLOUDFLARE_API_KEY= # Moved to Docker Secrets ################################################################ # Authentik (https://docs.goauthentik.io/docs/) # Environment Variables (https://docs.goauthentik.io/docs/installation/configuration) ################################################################ POSTGRES_PASSWORD_FILE=/run/secrets/authentik_postgresql_password #POSTGRES_USER_FILE=/run/secrets/authentik_postgresql_user POSTGRES_USER_FILE=/run/secrets/authentik_postgresql_db POSTGRES_DB_FILE=/run/secrets/authentik_postgresql_db AUTHENTIK_REDIS__HOST=authentik_redis AUTHENTIK_POSTGRESQL__HOST=authentik_postgresql AUTHENTIK_POSTGRESQL__NAME=file:///run/secrets/authentik_postgresql_db #AUTHENTIK_POSTGRESQL__USER=file:///run/secrets/authentik_postgresql_user AUTHENTIK_POSTGRESQL__USER=file:///run/secrets/authentik_postgresql_db AUTHENTIK_POSTGRESQL__PASSWORD=file:///run/secrets/authentik_postgresql_password AUTHENTIK_DISABLE_STARTUP_ANALYTICS=true AUTHENTIK_DISABLE_UPDATE_CHECK=false AUTHENTIK_ERROR_REPORTING__ENABLED=false AUTHENTIK_LOG_LEVEL=info # debug, info, warning, error, trace AUTHENTIK_SECRET_KEY=file:///run/secrets/authentik_secret_key # openssl rand 60 | base64 -w 0 AUTHENTIK_COOKIE_DOMAIN=${DOMAINNAME} # AUTHENTIK_LISTEN__TRUSTED_PROXY_CIDRS: CHANGEME_IFAPPLICABLE # Defaults to all of: 127.0.0.0/8, 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, fe80::/10, ::1/128 DOCKER_HOST: tcp://socket-proxy:2375 # Use this if you have Socket Proxy enabled. AUTHENTIK_EMAIL__HOST=smtp.gmail.com AUTHENTIK_EMAIL__PORT=587 AUTHENTIK_EMAIL__USERNAME=file:///run/secrets/gmail_smtp_username AUTHENTIK_EMAIL__PASSWORD=file:///run/secrets/gmail_smtp_password AUTHENTIK_EMAIL__USE_TLS=false AUTHENTIK_EMAIL__USE_SSL=false AUTHENTIK_EMAIL__TIMEOUT=10 AUTHENTIK_EMAIL__FROM=file:///run/secrets/gmail_smtp_username ################################################################ # GeoIP ( https://github.com/maxmind/geoipupdate) # Environment Variables (https://github.com/maxmind/geoipupdate/blob/main/doc/docker.md) ################################################################ GEOIPUPDATE_EDITION_IDS="GeoLite2-City GeoLite2-ASN" # Space seperated GEOIPUPDATE_FREQUENCY=8 # Frequency to check for updates, in hours GEOIPUPDATE_ACCOUNT_ID_FILE=/run/secrets/geoip_account_id GEOIPUPDATE_LICENSE_KEY_FILE=/run/secrets/geoip_license_key ```

Compose File

I really like how Anand did his compose.yaml file to be a stack of includes for cleaner organization.

compose.yaml - Defines the base networks, secrets, and other compose files below to include when ran.

The 2 other whoami containers are inside of the Authentik compose since they are examples, strictly for demonstration and then removed.

Docker Secrets

The following secrets (defined in the base compose.yaml need to be created)

I recommend you create secrets with the following syntax: 

echo -n 'VALUE_CHANGEME' > SECRET_NAME_CHANGEME

Check out Traefik's info at https://doc.traefik.io/traefik/https/acme/#providers. Cloudflare Specific information: https://go-acme.github.io/lego/dns/cloudflare/

Authentik specific (https://docs.goauthentik.io/docs/installation/docker-compose#preparation)

Create a gmail account and input the info.

Go to https://dev.maxmind.com/geoip/geolite2-free-geolocation-data in order to generate a free license key (https://www.maxmind.com/en/accounts/current/license-key) for use.

Traefik Setup

Configuration

I like having Traefik's configuration in a file, it makes more sense to me compared to passing a ton of command arguments in the compose.

traefik.yaml ```yaml # Traefik 3.x (YAML) # Updated 2024-June-04 ################################################################ # Global configuration - https://doc.traefik.io/traefik/reference/static-configuration/file/ ################################################################ global: checkNewVersion: false sendAnonymousUsage: false ################################################################ # Entrypoints - https://doc.traefik.io/traefik/routing/entrypoints/ ################################################################ entryPoints: web: address: ":80" # Global HTTP to HTTPS redirection http: redirections: entrypoint: to: websecure scheme: https websecure: address: ":443" http: tls: options: tls-opts@file certResolver: le domains: - main: "domain.tld" sans: - "*.domain.tld" forwardedHeaders: trustedIPs: # Cloudflare (https://www.cloudflare.com/ips-v4) - "173.245.48.0/20" - "103.21.244.0/22" - "103.22.200.0/22" - "103.31.4.0/22" - "141.101.64.0/18" - "108.162.192.0/18" - "190.93.240.0/20" - "188.114.96.0/20" - "197.234.240.0/22" - "198.41.128.0/17" - "162.158.0.0/15" - "104.16.0.0/13" - "104.24.0.0/14" - "172.64.0.0/13" - "131.0.72.0/22" # Local IPs - "127.0.0.1/32" - "10.0.0.0/8" - "192.168.0.0/16" - "172.16.0.0/12" ################################################################ # Logs - https://doc.traefik.io/traefik/observability/logs/ ################################################################ log: level: INFO # Options: DEBUG, PANIC, FATAL, ERROR (Default), WARN, and INFO filePath: /logs/traefik-container.log # Default is to STDOUT # format: json # Uses text format (common) by default noColor: false # Recommended to be true when using common maxSize: 100 # In megabytes compress: true # gzip compression when rotating ################################################################ # Access logs - https://doc.traefik.io/traefik/observability/access-logs/ ################################################################ accessLog: addInternals: true # things like ping@internal filePath: /logs/traefik-access.log # In the Common Log Format (CLF) by default bufferingSize: 100 # Number of log lines fields: names: StartUTC: drop # Write logs in Container Local Time instead of UTC filters: statusCodes: - "204-299" - "400-499" - "500-599" ################################################################ # API and Dashboard ################################################################ api: dashboard: true # Rely on api@internal and Traefik with Middleware to control access # insecure: true ################################################################ # Providers - https://doc.traefik.io/traefik/providers/docker/ ################################################################ providers: docker: #endpoint: "unix:///var/run/docker.sock" # Comment if using socket-proxy endpoint: "tcp://socket-proxy:2375" # Uncomment if using socket proxy exposedByDefault: false network: traefik # network to use for connections to all containers # defaultRule: TODO # Enable auto loading of newly created rules by watching a directory file: # Apps, LoadBalancers, TLS Options, Middlewares, Middleware Chains directory: /rules watch: true ################################################################ # Let's Encrypt (ACME) ################################################################ certificatesResolvers: le: acme: email: "CHANGEME@gmail.com" storage: "/data/acme.json" #caServer: "https://acme-staging-v02.api.letsencrypt.org/directory" # Comment out when going prod dnsChallenge: provider: cloudflare #delayBeforeCheck: 30 # Default is 2m0s. This changes the delay (in seconds) # Custom DNS server resolution resolvers: - "1.1.1.1:53" - "8.8.8.8:53" ```

acme.json

When traefik comes up and authenticates with Let's Encrypt a acme.json will be created at

Rules / Middleware Preparation

I've included several of the rules I use in my own setup located at

[!NOTE] The one that makes Authentik work is middlewares-authentik.yaml OR forwardAuth-authentik.yaml. They are the exact same thing, but you can decide which name makes more sense to use. In the compose.yaml I am using middlewares-authentik, but to me it makes more sense to use forwardAuth-authentik so when you are reading the traefik label's you know what it is supposed to do. Your choice.

Traefik is already proxying the connections to the Authentik container/service. Additional middleware rules and an embedded outpost must be configured to enable authentication with Authentik through Traefik, forwardAuth.

In order to setup forwardAuth at a minimum, Traefik requires a declaration. Authentik provides an example, but in accordance with the compose.yaml the values below should make more sense.

middlewares-authentik.yaml ```yaml ################################################################ # Middlewares (https://github.com/htpcBeginner/docker-traefik/blob/master/appdata/traefik2/rules/cloudserver/middlewares.yml) # 2024 update: https://github.com/htpcBeginner/docker-traefik/tree/master/appdata/traefik3/rules/hs # https://www.smarthomebeginner.com/traefik-docker-compose-guide-2022/ # # Dynamic configuration ################################################################ http: middlewares: ################################################################ # Forward Authentication - OAUTH / 2FA ################################################################ # # https://github.com/goauthentik/authentik/issues/2366 forwardAuth-authentik: forwardAuth: address: "http://authentik_server:9000/outpost.goauthentik.io/auth/traefik" trustForwardHeader: true authResponseHeaders: - X-authentik-username - X-authentik-groups - X-authentik-email - X-authentik-name - X-authentik-uid - X-authentik-jwt - X-authentik-meta-jwks - X-authentik-meta-outpost - X-authentik-meta-provider - X-authentik-meta-app - X-authentik-meta-version ```

The Forward Authentication WILL NOT work unless the middleware is enabled.

[!WARNING]
"Priority based on rule length" Authentik generates the priority for authentication based on rule length (Traefik label). This means if you have a rule (Traefik label) for Authentik to listen on multiple host names with OR, || statements, it will have a higher priority than the embedded outpost. Refer to goauthentik/authentik#2180 about setting the priority for the embedded outpost.

Bringing the Stack Online

Time to start up the stack and begin configuration. Ensure this command is ran from the same directory as compose.yaml. 

docker compose up -d

Authentik Setup

Because Authentik uses cookies, I recommend using Incognito for each piece of testing, so you don't have to clear cookies every time or when something is setup incorrectly.

[!WARNING]
While using a container behind Authentik, it prompts for authentication, and then flashes but doesn't load. This generally indicates cookies are messing up the loading. So use INCOGNITO.

Initial Setup

With Authentik being reverse proxied through Traefik and the middleware showing as enabled in Traefik's dashboard, then configuration of Authentik can begin.

  1. Navigate to Authentik at https://authentik.domain.tld/if/flow/initial-setup/
  2. Login to Authentik to begin setup.

[!NOTE] If this is the first time logging in you will have to set the password for akadmin (default user). If establishing the default credentials fails - the setup is not working correctly.

Authentik-Initial-Setup

The default user is akadmin, which is a super user. This initial setup will setup the Super User's email and Password. You will change the username FROM akadmin to whatever you want.

The first screen you'll see after setting the password and email is:
First-Screen

(Optional) Change akadmin username

You can change the username from akadmin to whatever.
In the Admin Interface go to

  1. Directory
  2. Users
  3. Click on Edit beside akadmin

edit-admin-name

name-change

(Information) Error Screen before Provider and Application

I think this is important for anyone that attempts to set this up.

If you attempt to navigate to a page that IS using Authentik's forwardAuth middleware but haven't finished setting up a provider and application (individual or domain wide catch all) then you will see a screen like this:
error-before-setup

Applications / Providers

In the current version, for this documentation 2024.6.0, Authentik now includes a Wizard to aid with setting up a Application and Provider instead of manually doing it.

I am going to set up my Individual Application manually and the Domain Wide / Catch All using the Wizard. ONLY to show how you can do either method, both work!

[!NOTE] I am using the embedded outpost. The embedded outpost requires version 2021.8.1 or newer. This prevents needing the seperate Forward Auth / Proxy Provider container.

[!WARNING] Individual applications have a higher priority than the catch all, so you can set up both!

Domain Wide / Catch All (forwardAuth) using the Wizard

In order for this to "Catch All" you must set a traefik middleware on each service. Look inside the compose.yaml. This specific snippet is from the whoami-individual service inside the authentik/compose.yaml:

Specifically the middlewares-authentik@file" line. 

    labels:
      - "traefik.enable=true"
      ## HTTP Routers
      - "traefik.http.routers.whoami-individual-rtr.rule=Host(`whoami-individual.${DOMAINNAME}`)"
      ## Middlewares
      - "traefik.http.routers.whoami-individual-rtr.middlewares=middlewares-authentik@file"

Navigate to:

  1. Applications
  2. Applications
  3. "Create with Wizard"
    app-page

Wizard Page 1 - "Application Details"

Catch-All-P1

Wizard Page 2 - "Provider Type"

catch-all-p2

Wizard Page 3 - "Provider Configuration"

When all is done, you should have success. If not, carefully review the previous settings. You most likely forgot https:// in front of authentik.domain.tld
wizard-success

Embedded Outpost (Domain Wide)

Navigate to the Outposts screen and edit the Embedded Outpost:

  1. Applications
  2. Outposts
  3. Edit the Embedded Outpost

edit-embed

Notice how the above picture has Providers empty?

Update the Outpost to have the Domain Wide Forward Auth Catch All in Selected Applications

BEFORE Adding
before-add
AFTER Adding
after-add

Now the Embedded Outpost shows the Provider for the Catch All rule instead of it being empty/blank:
updated-provider

Domain Wide / Catch All Test/Validation

Now that the catch all rule is in place, validate it using the already running whoami-catchall container created:

Navigate to whoami-catchall.domain.tld and it will immediately redirect you to Authentik to login:
fa-splash

Sign in with your username or email address initially created. After inputting username & password, it should show you the "Redirecting" screen prior to actual redirection:
whoami-all

The X-Authentik-Meta-App will contain information about the specific Application used to get here. Notice that this matches the slug previously created. 

X-Authentik-Meta-App: domain-wide-forward-auth-catch-all

Individual Application (forwardAuth) manual

Maybe you don't want to use the wizard, though I'm not sure why. So here's how you can do it without the Wizard.

An Application specific Forward Auth configuration will allow different authentication flows to be selected and not disrupt the default domain authentication flow. For example the default domain authentication flow allows a user to authentication with Authentik using username/password only. An application specific could be used for app with additional security ie an OTP, or local networks only, etc.. In most cases the default authentication flow will serve most homelab uses.

As of version 2022.07.03 authentik still requires /outpost.goauthentik.io/ to be routed IF USING INDIVIDUAL APPLICATIONS INSTEAD OF A SINGLE DOMAIN WIDE CATCH-ALL. At the end of July 2022 BeryJu has an upcoming fix that should remove the below label.

Note: This does not seem to be required on everyone's setup. Individual Application forwardAuth does not work on mine without this label. I recommend you check your setup both with this label.

[!NOTE]
"providers/proxy: no exposed urls #3151" This PR greatly simplifies the Forward auth setup for traefik and envoy. It'll remove the requirement /outpost.goauthentik.io to be openly accessible, which makes setup easier and decreases attack surface.

This label is applied to the authentik_server container. Even if you don't use individual applications, keep this label just in case you DO in the future! 

    labels:
      - "traefik.enable=true"
      ## Individual Application forwardAuth regex (catch any subdomain using individual application forwardAuth)  
      - "traefik.http.routers.authentik-output-rtr.rule=HostRegexp(`{subdomain:[a-z0-9-]+}.${DOMAINNAME}`) && PathPrefix(`/outpost.goauthentik.io/`)"

Provider Creation (Individual Application) - Manual

In the Admin Interface, go to:

  1. Applications
  2. Providers
  3. Create

manual-create-p

Select Proxy Provider
m-pp

Use the following settings:

After hitting Finish it will show that it's not bound to an Application: unbound-provider

Application Creation (Individual Application) - Manual

In the Admin Interface, go to:

  1. Applications
  2. Applications
  3. Create

m-app

Manual-App-Create

After hitting Create it will show that it is now bound to the previously created provider:
Manual-App-Bound

Embedded Outpost (Individual Application)

Navigate to the Outposts screen and edit the Embedded Outpost:

  1. Applications
  2. Outposts
  3. Edit the Embedded Outpost

embed-outpost-2

Highlight any application you want the outpost to be able to provide for. In this case Highlight whoami-individual application

BEFORE HIGHLIGHT
Notice that BEFORE highlighting and adding to Selected Applications, it still has only the Domain Wide Forward Auth Catch All rule in Selected Applications:

before-add-2nd

AFTER HIGHLIGHT
This will include both the domain wide (catch all) and the individual application bound to this outpost.
after-add-2nd

After hitting Update the Outpost page will show that the embedded outpost now has both providers bound to it:
outpost-with-2

Individual Application Test/Validation

Now that the individual application rule is in place, validate it using the already running whoami-individual container created:

Navigate to whoami-individual.domain.tld and it will immediately redirect you to Authentik to login:
fa-splash

Sign in with your username or email address initially created. After inputting username & password, it should show you the "Redirecting" screen prior to actual redirection:
whoami-all

The X-Authentik-Meta-App will contain information about the specific Application used to get here. Notice that this matches the slug previously created. 

X-Authentik-Meta-App: whoami-individual-application

(Optional) New User Creation

Inside the Admin Interface do the following steps to create an additional user:

  1. Directory
  2. Users
  3. Create

user-create-1

Fill in the required information:
account-create-info

(Optional) Add user to Administrator/Superuser Group

Inside the Admin Interface do the following steps to add a user to the Admins group:

  1. Directory
  2. Groups
  3. Left click/Open authentik Admins

admins-open

Next, add an existing user to the Users tab:

  1. Users
  2. Add existing user

add-existing-user1

Add the user user-added

(Optional) Change user password

Inside the Admin Interface do the following:

  1. Directory
  2. Users
  3. Left click/Open the specific user

open-user

set-pw

Yubikey

Read this section before just doing it!

https://docs.goauthentik.io/docs/flow/stages/authenticator_webauthn/#authenticator-attachment

[!WARNING]
To prevent locking yourself out and having to start over by deleting your postgres database, create a backup administrator (as done above) or work on a non-administrator account.

[!NOTE]
If you are unable to perform the below steps, skip to the Force Authentication section below.

Recommended to Switch to standard browser / NOT Incognito.

IF you are in the Admin Interface navigate to the User Interface via the button at the top left:
user_interface_button

Navigate to the MFA Devices screen:

  1. Settings
  2. MFA Devices
  3. Enroll
  4. WebAuthn device

settings-cog

Enrollment with Credential on Key

mfa-dev

During setup process, depending on your WebAuthn settings you might get prompted for a PIN: webauthn-pin

If you are unsure about this, then review the following Yubikey documentation / explanation (https://support.yubico.com/hc/en-us/articles/4402836718866-Understanding-YubiKey-PINs)

If you are being prompted for a PIN (including setting one up), and you're not sure which PIN it is, most likely it is your YubiKey's FIDO2 PIN.

Now complete the WebAuthn Setup:
webauthn1

Hit next and you'll see that you are about to setup your key:
webauthn2

choose-path

[!CAUTION]
By performing the setup like this, it asks to create a credential on the Yubikey device itself. If you want to make it where it does NOT create the credential itself skip setup for now and go to the Modify WebAuthn Credential Creation Location section where I will show how to change the save credential to key option. After changing that option, you can revisit setup.

STOP - Read the Above Caution Statement before continuing!

If you're ok with creating the credential on your key, continue!

webauthn3

Modify WebAuthn Credential Creation Location

In order to modify the default settings to prevent saving a credential on the Yubikey itself perform the following steps.

  1. Go to the Admin Interface
  2. Flows and Stages
  3. Stages
  4. Edit default-authenticator-webauthn-setup

edit-webauthn

Review the default settings:
res-key-def

Edit the Resident key requirement

Unfortunately, if I try to skip the dedicated credential, I am unable to setup a Yubikey. I am going to set this option to:

res-key-change

(Optional) Edit the User verification depending on your WebAuthn expertise.

I am leaving it default:

(Optional) Authenticator preference

Authentik by default has no preference set for the Authenticator, as shown in the above picture. This can be changed to be explicitly Yubikey OR Windows Hello/TouchID. If you do not want to be prompted by Windows Hello, as shown in the Windows Hello section, then set this to A "roaming" authenticator, like a YubiKey.
yubi-pref

Finish Registration

If you chose to NOT save your key on the Yubikey like above, then scroll back up to continue the registration / finish it.
finish-mfa-reg

(Troubleshooting) Windows Hello

During Security Key enrollment, if you are interrupted by Windows Hello shown here:
win-hello

Press ESC to continue to actual Yubikey enrollment. This only seems to happen if you have previously setup Windows Hello.

[!NOTE]
If you are prompted for a PIN that you do not know, go to the Enrollment with Credential on Key section for the Yubikey documentation link to address the PIN. Optionally, you can also Force it to skip Windows Hello and go straight to the Yubikey by modifying the default-authenticator-webauthn-setup, as seen in the (Optional) Authenticator preference section above.

(Optional) Force Multi-Factor Authentication (MFA)

To configure an authentication a user must be in the state that forces them to add an authentication. In order to do this, I am going to modify the default flow for authentication regarding MFA devices.

  1. Go to the Admin Interface
  2. Flows & Stages
  3. Stages
  4. Edit default-authentication-mfa-validation

default-mfa

The initial settings for the default-authentication-mfa-validation stage look like this:
mfa-stage-defaults

Change the Device Classes to what options you want you or other users to have (by default). I am only going to REMOVE static tokens.
no-static

Modify the Not configured action to Force the user to configure an authenticator:

After setting the Not configured action to Force the user to configure an authenticator it will unlock the Configuration stages options as seen above.
This section, as it says right below it

Stages used to configure Authenticator when user doesn't have any compatible devices. After this configuration Stage passes, the user is not prompted again.
When multiple stages are selected, the user can choose which one they want to enroll.

  • Select: default-authenticator-totp-setup (TOP Authenticator Setup Stage)
  • Select: default-authenticator-webauthn-setup (WebAuthn Authenticator Setup Stage)

In order to highlight multiple, use the Shift key.
mfa-selections

Hit Update

Open another INCOGNITO browser and navigate back to the whoami-individual URL or authentik's URL and sign in.

After entering the username/password a new window pop-up asks to select an authenticator method -- choose default-authenticator-webauthn-setup. The following steps should match the Yubikey section above.

This will only give you this option if you did not previously register your Yubikey inside of the MFA devices.

Domain Wide (Tenet) Policies

View the Default Flows by going to the Admin Interface

  1. System
  2. Brands
  3. Edit authentik-default
    domain-defaults

Expand down Default flows
def-flows

Notice that the DEFAULT Authentication flow is default-authentication-flow (Welcome to authentik!)

Navigate to:

In order to view the default default-authentication-flow.

Why does this matter? To understand the way YOU have this identity tool setup. 

graph LR
  A[Start] --> B[Authentication];
  B --> C[Authorization];
  C --> D[Login];

Authentication default

By default the flow for all authentication, default-authentication-flow, is as follows:

graph LR
  A[Start] --> B[Username];
  B --> C[Password];
  C --> D{MFA Configured?};
  D -->|No| F[Login];
  D -->|Yes| E[MFA Prompt<br>Forced];
  E --> F;

Authorization defaults

There are two policies for authorization, explicit, default-provider-authorization-explicit-consent, and implicit, default-provider-authorization-implicit-consent. By default the explicit policy is used.

Explicit

Explicit, default-provider-authorization-explicit-consent, requires a pop-up showing that you accept your information is about to be shared with the site. This could be your email, username or whatever you have setup. 

graph LR
  A[Start] --> B[Consent];
  B --> C[Continue];

Implicit

Implicit, default-provider-authorization-implicit-consent, means that by logging in you accept your information (email or username, etc.) will be shared with the site, do not prompt, just continue through. 

graph LR
  A[Start] --> B[Continue];