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website: latest migration to new structure (#11522)

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* first pass

* dependency shenanigans

* move blueprints

* few broken links

* change config the throw errors

* internal file edits

* fighting links

* remove sidebarDev

* fix subdomain

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix relative URL

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix mismatched package versions

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix api reference build

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* test tweak

* links hell

* more links hell

* links hell2

* yep last of the links

* last broken link fixed

* re-add cves

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* add devdocs redirects

* add dir

* tweak netlify.toml

* move latest 2 CVES into dir

* fix links to moved cves

* typoed title fix

* fix link

* remove banner

* remove committed api docs

Signed-off-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>

* integrations: remove version dropdown

Signed-off-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>

* Update Makefile

Signed-off-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>

* change doc links in web as well

Signed-off-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>

* fix some more docs paths

Signed-off-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>

* fix more docs paths

Signed-off-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>

* ci: require ci-web.build for merging

Signed-off-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>

* Revert "ci: require ci-web.build for merging"

This reverts commit b99a4842a9.

* remove sluf for Application

* put slug back in

* minor fix to trigger deploy

---------

Signed-off-by: Jens Langhammer <jens@goauthentik.io>
Signed-off-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>
Co-authored-by: Tana M Berry <tana@goauthentik.com>
Co-authored-by: Jens Langhammer <jens@goauthentik.io>
Co-authored-by: Marc 'risson' Schmitt <marc.schmitt@risson.space>
This commit is contained in:
Tana M Berry
2024-10-08 14:07:19 -05:00
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commit 9a89a5f94b
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6
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:::info
_example-outpost_ is used as a placeholder for the outpost name.
_authentik.company_ is used as a placeholder for the authentik install.
_app.company_ is used as a placeholder for the external domain for the application.
_outpost.company_ is used as a placeholder for the outpost. When using the embedded outpost, this can be the same as _authentik.company_
:::

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Use the following configuration:
```
app.company {
# directive execution order is only as stated if enclosed with route.
route {
# always forward outpost path to actual outpost
reverse_proxy /outpost.goauthentik.io/* http://outpost.company:9000
# forward authentication to outpost
forward_auth http://outpost.company:9000 {
uri /outpost.goauthentik.io/auth/caddy
# capitalization of the headers is important, otherwise they will be empty
copy_headers 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
# optional, in this config trust all private ranges, should probably be set to the outposts IP
trusted_proxies private_ranges
}
# actual site configuration below, for example
reverse_proxy localhost:1234
}
}
```
If you're trying to proxy to an upstream over HTTPS, you need to set the `Host` header to the value they expect for it to work correctly.
```
reverse_proxy /outpost.goauthentik.io/* https://outpost.company {
header_up Host {http.reverse_proxy.upstream.hostport}
}
```

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Set the following settings on the _IstioOperator_ resource:
```yaml
apiVersion: install.istio.io/v1alpha1
kind: IstioOperator
metadata:
name: istio
namespace: istio-system
spec:
meshConfig:
extensionProviders:
- name: "authentik"
envoyExtAuthzHttp:
# Replace with <service-name>.<namespace>.svc.cluster.local
service: "ak-outpost-authentik-embedded-outpost.authentik.svc.cluster.local"
port: "9000"
pathPrefix: "/outpost.goauthentik.io/auth/envoy"
headersToDownstreamOnAllow:
- cookie
headersToUpstreamOnAllow:
- set-cookie
- x-authentik-*
# Add authorization headers to the allow list if you need proxy providers which
# send a custom HTTP-Basic Authentication header based on values from authentik
# - authorization
includeRequestHeadersInCheck:
- cookie
```
Afterwards, you can create _AuthorizationPolicy_ resources to protect your applications like this:
```yaml
apiVersion: security.istio.io/v1beta1
kind: AuthorizationPolicy
metadata:
name: authentik-policy
namespace: istio-system
spec:
selector:
matchLabels:
istio: ingressgateway
action: CUSTOM
provider:
name: "authentik"
rules:
- to:
- operation:
hosts:
# You can create a single resource and list all Domain names here, or create multiple resources
- "app.company"
```

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Create a new ingress for the outpost
```yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: authentik-outpost
spec:
rules:
- host: app.company
http:
paths:
- path: /outpost.goauthentik.io
pathType: Prefix
backend:
# Or, to use an external Outpost, create an ExternalName service and reference that here.
# See https://kubernetes.io/docs/concepts/services-networking/service/#externalname
service:
name: ak-outpost-example-outpost
port:
number: 9000
```
This ingress handles authentication requests, and the sign-in flow.
Add these annotations to the ingress you want to protect
:::warning
This configuration requires that you enable [`allow-snippet-annotations`](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#allow-snippet-annotations), for example by setting `controller.allowSnippetAnnotations` to `true` in your helm values for the ingress-nginx installation.
:::
```yaml
metadata:
annotations:
# This should be the in-cluster DNS name for the authentik outpost service
# as when the external URL is specified here, nginx will overwrite some crucial headers
nginx.ingress.kubernetes.io/auth-url: |-
http://ak-outpost-example.authentik.svc.cluster.local:9000/outpost.goauthentik.io/auth/nginx
# If you're using domain-level auth, use the authentication URL instead of the application URL
nginx.ingress.kubernetes.io/auth-signin: |-
https://app.company/outpost.goauthentik.io/start?rd=$scheme://$http_host$escaped_request_uri
nginx.ingress.kubernetes.io/auth-response-headers: |-
Set-Cookie,X-authentik-username,X-authentik-groups,X-authentik-email,X-authentik-name,X-authentik-uid
nginx.ingress.kubernetes.io/auth-snippet: |
proxy_set_header X-Forwarded-Host $http_host;
```

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```
# Upgrade WebSocket if requested, otherwise use keepalive
map $http_upgrade $connection_upgrade_keepalive {
default upgrade;
'' '';
}
# Increase buffer size for large headers
# This is needed only if you get 'upstream sent too big header while reading response
# header from upstream' error when trying to access an application protected by goauthentik
proxy_buffers 8 16k;
proxy_buffer_size 32k;
# Make sure not to redirect traffic to a port 4443
port_in_redirect off;
location / {
# Put your proxy_pass to your application here
proxy_pass $forward_scheme://$server:$port;
# Set any other headers your application might need
# proxy_set_header Host $host;
# proxy_set_header ...
# Support for websocket
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade_keepalive;
##############################
# authentik-specific config
##############################
auth_request /outpost.goauthentik.io/auth/nginx;
error_page 401 = @goauthentik_proxy_signin;
auth_request_set $auth_cookie $upstream_http_set_cookie;
add_header Set-Cookie $auth_cookie;
# translate headers from the outposts back to the actual upstream
auth_request_set $authentik_username $upstream_http_x_authentik_username;
auth_request_set $authentik_groups $upstream_http_x_authentik_groups;
auth_request_set $authentik_email $upstream_http_x_authentik_email;
auth_request_set $authentik_name $upstream_http_x_authentik_name;
auth_request_set $authentik_uid $upstream_http_x_authentik_uid;
proxy_set_header X-authentik-username $authentik_username;
proxy_set_header X-authentik-groups $authentik_groups;
proxy_set_header X-authentik-email $authentik_email;
proxy_set_header X-authentik-name $authentik_name;
proxy_set_header X-authentik-uid $authentik_uid;
# This section should be uncommented when the "Send HTTP Basic authentication" option
# is enabled in the proxy provider
# auth_request_set $authentik_auth $upstream_http_authorization;
# proxy_set_header Authorization $authentik_auth;
}
# all requests to /outpost.goauthentik.io must be accessible without authentication
location /outpost.goauthentik.io {
# When using the embedded outpost, use:
proxy_pass http://authentik.company:9000/outpost.goauthentik.io;
# For manual outpost deployments:
# proxy_pass http://outpost.company:9000;
# Note: ensure the Host header matches your external authentik URL:
proxy_set_header Host $host;
proxy_set_header X-Original-URL $scheme://$http_host$request_uri;
add_header Set-Cookie $auth_cookie;
auth_request_set $auth_cookie $upstream_http_set_cookie;
proxy_pass_request_body off;
proxy_set_header Content-Length "";
}
# Special location for when the /auth endpoint returns a 401,
# redirect to the /start URL which initiates SSO
location @goauthentik_proxy_signin {
internal;
add_header Set-Cookie $auth_cookie;
return 302 /outpost.goauthentik.io/start?rd=$request_uri;
# For domain level, use the below error_page to redirect to your authentik server with the full redirect path
# return 302 https://authentik.company/outpost.goauthentik.io/start?rd=$scheme://$http_host$request_uri;
}
```

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```
# Upgrade WebSocket if requested, otherwise use keepalive
map $http_upgrade $connection_upgrade_keepalive {
default upgrade;
'' '';
}
server {
# SSL and VHost configuration
listen 443 ssl http2;
server_name _;
ssl_certificate /etc/ssl/certs/ssl-cert-snakeoil.pem;
ssl_certificate_key /etc/ssl/private/ssl-cert-snakeoil.key;
# Increase buffer size for large headers
# This is needed only if you get 'upstream sent too big header while reading response
# header from upstream' error when trying to access an application protected by goauthentik
proxy_buffers 8 16k;
proxy_buffer_size 32k;
location / {
# Put your proxy_pass to your application here, and all the other statements you'll need
# proxy_pass http://localhost:5000;
# proxy_set_header Host $host;
# proxy_set_header ...
# Support for websocket
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $connection_upgrade_keepalive;
##############################
# authentik-specific config
##############################
auth_request /outpost.goauthentik.io/auth/nginx;
error_page 401 = @goauthentik_proxy_signin;
auth_request_set $auth_cookie $upstream_http_set_cookie;
add_header Set-Cookie $auth_cookie;
# translate headers from the outposts back to the actual upstream
auth_request_set $authentik_username $upstream_http_x_authentik_username;
auth_request_set $authentik_groups $upstream_http_x_authentik_groups;
auth_request_set $authentik_email $upstream_http_x_authentik_email;
auth_request_set $authentik_name $upstream_http_x_authentik_name;
auth_request_set $authentik_uid $upstream_http_x_authentik_uid;
proxy_set_header X-authentik-username $authentik_username;
proxy_set_header X-authentik-groups $authentik_groups;
proxy_set_header X-authentik-email $authentik_email;
proxy_set_header X-authentik-name $authentik_name;
proxy_set_header X-authentik-uid $authentik_uid;
# This section should be uncommented when the "Send HTTP Basic authentication" option
# is enabled in the proxy provider
# auth_request_set $authentik_auth $upstream_http_authorization;
# proxy_set_header Authorization $authentik_auth;
}
# all requests to /outpost.goauthentik.io must be accessible without authentication
location /outpost.goauthentik.io {
# When using the embedded outpost, use:
proxy_pass http://authentik.company:9000/outpost.goauthentik.io;
# For manual outpost deployments:
# proxy_pass http://outpost.company:9000;
# Note: ensure the Host header matches your external authentik URL:
proxy_set_header Host $host;
proxy_set_header X-Original-URL $scheme://$http_host$request_uri;
add_header Set-Cookie $auth_cookie;
auth_request_set $auth_cookie $upstream_http_set_cookie;
proxy_pass_request_body off;
proxy_set_header Content-Length "";
}
# Special location for when the /auth endpoint returns a 401,
# redirect to the /start URL which initiates SSO
location @goauthentik_proxy_signin {
internal;
add_header Set-Cookie $auth_cookie;
return 302 /outpost.goauthentik.io/start?rd=$request_uri;
# For domain level, use the below error_page to redirect to your authentik server with the full redirect path
# return 302 https://authentik.company/outpost.goauthentik.io/start?rd=$scheme://$http_host$request_uri;
}
}
```

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```yaml
services:
traefik:
image: traefik:v3.0
container_name: traefik
volumes:
- /var/run/docker.sock:/var/run/docker.sock
ports:
- 80:80
command:
- "--api"
- "--providers.docker=true"
- "--providers.docker.exposedByDefault=false"
- "--entrypoints.web.address=:80"
authentik-proxy:
image: ghcr.io/goauthentik/proxy
ports:
- 9000:9000
- 9443:9443
environment:
AUTHENTIK_HOST: https://your-authentik.tld
AUTHENTIK_INSECURE: "false"
AUTHENTIK_TOKEN: token-generated-by-authentik
# Starting with 2021.9, you can optionally set this too
# when authentik_host for internal communication doesn't match the public URL
# AUTHENTIK_HOST_BROWSER: https://external-domain.tld
labels:
traefik.enable: true
traefik.port: 9000
traefik.http.routers.authentik.rule: Host(`app.company`) && PathPrefix(`/outpost.goauthentik.io/`)
# `authentik-proxy` refers to the service name in the compose file.
traefik.http.middlewares.authentik.forwardauth.address: http://authentik-proxy:9000/outpost.goauthentik.io/auth/traefik
traefik.http.middlewares.authentik.forwardauth.trustForwardHeader: true
traefik.http.middlewares.authentik.forwardauth.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
restart: unless-stopped
whoami:
image: containous/whoami
labels:
traefik.enable: true
traefik.http.routers.whoami.rule: Host(`app.company`)
traefik.http.routers.whoami.middlewares: authentik@docker
restart: unless-stopped
```

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Create a middleware:
```yaml
apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
name: authentik
spec:
forwardAuth:
address: http://outpost.company: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
```
Add the following settings to your IngressRoute
By default traefik does not allow cross-namespace references for middlewares:
See [here](https://doc.traefik.io/traefik/v2.4/providers/kubernetes-crd/#allowcrossnamespace) to enable it.
```yaml
spec:
routes:
- kind: Rule
match: "Host(`app.company`)"
middlewares:
- name: authentik
namespace: authentik
priority: 10
services: # Unchanged
# This part is only required for single-app setups
- kind: Rule
match: "Host(`app.company`) && PathPrefix(`/outpost.goauthentik.io/`)"
priority: 15
services:
- kind: Service
# Or, to use an external Outpost, create an ExternalName service and reference that here.
# See https://kubernetes.io/docs/concepts/services-networking/service/#externalname
name: ak-outpost-example-outpost
port: 9000
```

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```yaml
http:
middlewares:
authentik:
forwardAuth:
address: http://outpost.company: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
routers:
default-router:
rule: "Host(`app.company`)"
middlewares:
- authentik
priority: 10
service: app
default-router-auth:
rule: "Host(`app.company`) && PathPrefix(`/outpost.goauthentik.io/`)"
priority: 15
service: authentik
services:
app:
loadBalancer:
servers:
- url: http://ipp.internal
authentik:
loadBalancer:
servers:
- url: http://outpost.company:9000/outpost.goauthentik.io
```

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---
title: Custom headers
---
The proxy can send custom headers to your upstream application. These can be configured in one of two ways:
- Group attributes; this allows for inheritance, but only allows static values
- Property mappings; this allows for dynamic values
## Group attributes
Edit the group or user you wish the header to be set for, and set these attributes:
```yaml
additionalHeaders:
X-My-Header: value
```
You can the add users to this group or override the field in users.
## Property Mappings
For dynamic Header values (for example, your application requires X-App-User to contain the username), property mappings can be used.
Create a new Scope mapping with a name and scope of your choice, and use an expression like this:
```python
return {
"ak_proxy": {
"user_attributes": {
"additionalHeaders": {
"X-App-User": request.user.username
}
}
}
}
```
After you've created this Scope mapping, make sure to edit the proxy provider and select the mapping.
As you can see by the similar structure, this just overrides any static attributes, so both of these methods can be combined.

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---
title: Forward auth
---
Using forward auth uses your existing reverse proxy to do the proxying, and only uses the authentik outpost to check authentication and authorization.
To use forward auth instead of proxying, you have to change a couple of settings.
In the Proxy Provider, make sure to use one of the Forward auth modes.
## Forward auth modes
The only configuration difference between single application mode and domain level mode is the host that you specify.
For single application, you'd use the domain that the application is running on, and only `/outpost.goauthentik.io` is redirected to the outpost.
For domain level, you'd use the same domain as authentik.
### Single application
Single application mode works for a single application hosted on its dedicated subdomain. This has the advantage that you can still do per-application access policies in authentik.
### Domain level
To use forward auth instead of proxying, you have to change a couple of settings.
In the Proxy Provider, make sure to use the _Forward auth (domain level)_ mode.
This mode differs from the _Forward auth (single application)_ mode in the following points:
- You don't have to configure an application in authentik for each domain
- Users don't have to authorize multiple times
There are, however, also some downsides, mainly the fact that you **can't** restrict individual applications to different users.
## Configuration templates
For configuration templates for each web server, refer to the following:
import DocCardList from "@theme/DocCardList";
<DocCardList />

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---
title: Header authentication
---
## Sending authentication
### Send HTTP Basic authentication
Proxy providers have the option to _Send HTTP-Basic Authentication_ to the upstream authentication. When the option in the provider is enabled, two attributes must be specified. These attributes are the keys of values which can be saved on a user or group level that contain the credentials.
For example, with _HTTP-Basic Username Key_ set to `app_username` and _HTTP-Basic Password Key_ set to `app_password`, these attributes would have to be set either on a user or a group the user is member of:
```yaml
app_username: admin
app_password: admin-password
```
These credentials are only retrieved when the user authenticates to the proxy.
If the user does not have a matching attribute, authentik falls back to using the user's email address as username, and the password will be empty if not found.
## Receiving authentication
By default, when _Intercept header authentication_ is enabled, authentik will intercept the authorization header. If the authorization header value is invalid, an error response will be shown with a 401 status code. Requests without an authorization header will still be redirected to the standard login flow.
If the proxied application requires usage of the "Authorization" header, the setting should be disabled. When this setting is disabled, authentik will still attempt to interpret the "Authorization" header, and fall back to the default behaviour if it can't.
### Receiving HTTP Basic authentication <span class="badge badge--version">authentik 2023.1+</span>
Proxy providers can receive HTTP basic authentication credentials. The password is expected to be an _App password_, as the credentials are used internally with the [OAuth2 machine-to-machine authentication flow](../oauth2/client_credentials.md).
Access control is done with the policies bound to the application being accessed.
If the received credentials are invalid, a normal authentication flow is initiated. If the credentials are correct, the Authorization header is removed to prevent sending the credentials to the proxied application.
:::danger
It is **strongly** recommended that the client sending requests with HTTP-Basic authentication persists the cookies returned by the outpost. If this is not the case, every request must be authenticated independently, which will increase load on the authentik server and encounter a performance hit.
:::
Starting with authentik 2023.2, logging in with the reserved username `goauthentik.io/token` will behave as if a bearer token was used. All the same options as below apply. This is to allow token-based authentication for applications which might only support basic authentication.
### Receiving HTTP Bearer authentication <span class="badge badge--version">authentik 2023.1+</span>
Proxy providers can receive HTTP bearer authentication credentials. The token is expected to be a JWT token issued for the proxy provider. This is described [here](../oauth2/client_credentials.md), using the _client_id_ value shown in the admin interface. Both static and JWT authentication methods are supported.
Access control is done with the policies bound to the application being accessed.
If the received credentials are invalid, a normal authentication flow is initiated. If the credentials are correct, the Authorization header is removed to prevent sending the credentials to the proxied application.
:::caution
It is recommended that the client sending requests with HTTP-Bearer authentication persists the cookies returned by the outpost. For bearer authentication this has a smaller impact than for Basic authentication, but each request is still verified with the authentik server.
:::

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---
title: Proxy Provider
---
```mermaid
sequenceDiagram
participant u as User accesses service
participant rp as Reverse proxy
participant ak as authentik
participant s as Service
u->>rp: Initial request
rp->>ak: Checks authentication
alt User is authenticated
ak ->> rp: Successful response
rp ->> s: Initial request is forwarded
else User needs to be authenticated
ak ->> rp: Redirect to the login page
rp ->> u: Redirect is passed to enduser
end
```
## Headers
The proxy outpost sets the following user-specific headers:
### `X-authentik-username`
Example value: `akadmin`
The username of the currently logged in user
### `X-authentik-groups`
Example value: `foo|bar|baz`
The groups the user is member of, separated by a pipe
### `X-authentik-email`
Example value: `root@localhost`
The email address of the currently logged in user
### `X-authentik-name`
Example value: `authentik Default Admin`
Full name of the current user
### `X-authentik-uid`
Example value: `900347b8a29876b45ca6f75722635ecfedf0e931c6022e3a29a8aa13fb5516fb`
The hashed identifier of the currently logged in user.
Besides these user-specific headers, some application specific headers are also set:
### `X-authentik-meta-outpost`
Example value: `authentik Embedded Outpost`
The authentik outpost's name.
### `X-authentik-meta-provider`
Example value: `test`
The authentik provider's name.
### `X-authentik-meta-app`
Example value: `test`
The authentik application's slug.
### `X-authentik-meta-version`
Example value: `goauthentik.io/outpost/1.2.3`
The authentik outpost's version.
### `X-Forwarded-Host`
:::info
Only set in proxy mode
:::
The original Host header sent by the client. This is set as the `Host` header is set to the host of the configured backend.
### Additional headers
Additionally, you can set `additionalHeaders` attribute on groups or users to set additional headers:
```yaml
additionalHeaders:
X-test-header: test-value
```
## HTTPS
The outpost listens on both 9000 for HTTP and 9443 for HTTPS.
:::info
If your upstream host is HTTPS, and you're not using forward auth, you need to access the outpost over HTTPS too.
:::
## Logging out
Login is done automatically when you visit the domain without a valid cookie.
When using single-application mode, navigate to `app.domain.tld/outpost.goauthentik.io/sign_out`.
When using domain-level mode, navigate to `auth.domain.tld/outpost.goauthentik.io/sign_out`, where auth.domain.tld is the external host configured for the provider.
To log out, navigate to `/outpost.goauthentik.io/sign_out`.
Starting with authentik 2023.2, when logging out of a provider, all the users sessions within the respective outpost are invalidated.
## Allowing unauthenticated requests
To allow un-authenticated requests to certain paths/URLs, you can use the _Unauthenticated URLs_ / _Unauthenticated Paths_ field.
Each new line is interpreted as a regular expression, and is compiled and checked using the standard Golang regex parser.
The behaviour of this field changes depending on which mode you're in.
### Proxy and Forward auth (single application)
In this mode, the regular expressions are matched against the Request's Path.
### Forward auth (domain level)
In this mode, the regular expressions are matched against the Request's full URL.
## Dynamic backend selection
You can configure the backend the proxy should access dynamically via _Scope mappings_. To do so, create a new _Scope mapping_, with a name and scope of your choice. As expression, use this:
```python
return {
"ak_proxy": {
"backend_override": f"http://foo.bar.baz/{request.user.username}"
}
}
```
Afterwards, edit the _Proxy provider_ and add this new mapping. The expression is only evaluated when the user logs into the application.

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import Tabs from "@theme/Tabs";
import TabItem from "@theme/TabItem";
# Caddy <span class="badge badge--version">authentik 2022.8+</span>
The configuration template shown below apply to both single-application and domain-level forward auth.
import Placeholders from "./__placeholders.md";
<Placeholders />
<Tabs
defaultValue="caddy-standalone"
values={[
{label: 'Caddy (standalone)', value: 'caddy-standalone'},
]}>
<TabItem value="caddy-standalone">
import CaddyStandalone from "./_caddy_standalone.md";
<CaddyStandalone />
</TabItem>
</Tabs>

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import Tabs from "@theme/Tabs";
import TabItem from "@theme/TabItem";
# Envoy <span class="badge badge--version">authentik 2022.6+</span>
The configuration template shown below apply to both single-application and domain-level forward auth.
:::info
If you are using Istio and Kubernetes, use the port number that is exposed for your cluster.
:::
import Placeholders from "./__placeholders.md";
<Placeholders />
<Tabs
defaultValue="envoy-istio"
values={[
{label: 'Envoy (Istio)', value: 'envoy-istio'},
]}>
<TabItem value="envoy-istio">
import EnvoyIstio from "./_envoy_istio.md";
<EnvoyIstio />
</TabItem>
</Tabs>

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import Tabs from "@theme/Tabs";
import TabItem from "@theme/TabItem";
# nginx
The configuration templates shown below apply to both single-application and domain-level forward auth.
import Placeholders from "./__placeholders.md";
<Placeholders />
<Tabs
defaultValue="standalone-nginx"
values={[
{label: 'Standalone nginx', value: 'standalone-nginx'},
{label: 'Ingress', value: 'ingress'},
{label: 'Nginx Proxy Manager', value: 'proxy-manager'},
]}>
<TabItem value="standalone-nginx">
import NginxStandalone from "./_nginx_standalone.md";
<NginxStandalone />
</TabItem>
<TabItem value="ingress">
import NginxIngress from "./_nginx_ingress.md";
<NginxIngress />
</TabItem>
<TabItem value="proxy-manager">
import NginxProxyManager from "./_nginx_proxy_manager.md";
<NginxProxyManager />
</TabItem>
</Tabs>

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import Tabs from "@theme/Tabs";
import TabItem from "@theme/TabItem";
# Traefik
The configuration templates shown below apply to both single-application and domain-level forward auth.
import Placeholders from "./__placeholders.md";
<Placeholders />
<Tabs
defaultValue="standalone-traefik"
values={[
{label: 'Standalone traefik', value: 'standalone-traefik'},
{label: 'docker-compose', value: 'docker-compose'},
{label: 'Ingress', value: 'ingress'},
]}>
<TabItem value="standalone-traefik">
import TraefikStandalone from "./_traefik_standalone.md";
<TraefikStandalone />
</TabItem>
<TabItem value="docker-compose">
import TraefikCompose from "./_traefik_compose.md";
<TraefikCompose />
</TabItem>
<TabItem value="ingress">
import TraefikIngress from "./_traefik_ingress.md";
<TraefikIngress />
</TabItem>
</Tabs>