185 lines
5.0 KiB
Markdown
185 lines
5.0 KiB
Markdown
---
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title: Proxy Provider
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---
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```mermaid
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sequenceDiagram
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participant u as User accesses service
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participant rp as Reverse proxy
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participant ak as authentik
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participant s as Service
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u->>rp: Initial request
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rp->>ak: Checks authentication
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alt User is authenticated
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ak ->> rp: Successful response
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rp ->> s: Initial request is forwarded
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else User needs to be authenticated
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ak ->> rp: Redirect to the login page
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rp ->> u: Redirect is passed to enduser
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end
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```
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## Headers
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The proxy outpost sets the following user-specific headers:
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### `X-authentik-username`
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Example value: `akadmin`
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The username of the currently logged in user
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### `X-authentik-groups`
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Example value: `foo|bar|baz`
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The groups the user is member of, separated by a pipe
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### `X-authentik-entitlements`
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Example value: `foo|bar|baz`
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The entitlements on the application this user has access to, separated by a pipe
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### `X-authentik-email`
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Example value: `root@localhost`
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The email address of the currently logged in user
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### `X-authentik-name`
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Example value: `authentik Default Admin`
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Full name of the current user
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### `X-authentik-uid`
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Example value: `900347b8a29876b45ca6f75722635ecfedf0e931c6022e3a29a8aa13fb5516fb`
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The hashed identifier of the currently logged in user.
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Besides these user-specific headers, some application specific headers are also set:
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### `X-authentik-meta-outpost`
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Example value: `authentik Embedded Outpost`
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The authentik outpost's name.
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### `X-authentik-meta-provider`
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Example value: `test`
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The authentik provider's name.
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### `X-authentik-meta-app`
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Example value: `test`
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The authentik application's slug.
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### `X-authentik-meta-version`
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Example value: `goauthentik.io/outpost/1.2.3`
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The authentik outpost's version.
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### `X-Forwarded-Host`
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:::info
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Only set in proxy mode
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:::
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The original Host header sent by the client. This is set as the `Host` header is set to the host of the configured backend.
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### Additional headers
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Additionally, you can set `additionalHeaders` attribute on groups or users to set additional headers:
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```yaml
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additionalHeaders:
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X-test-header: test-value
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```
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## HTTPS
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The outpost listens on both 9000 for HTTP and 9443 for HTTPS.
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:::info
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If your upstream host is HTTPS, and you're not using forward auth, you need to access the outpost over HTTPS too.
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:::
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## Logging out
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Login is done automatically when you visit the domain without a valid cookie.
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When using single-application mode, navigate to `app.domain.tld/outpost.goauthentik.io/sign_out`.
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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.
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To log out, navigate to `/outpost.goauthentik.io/sign_out`.
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Starting with authentik 2023.2, when logging out of a provider, all the users sessions within the respective outpost are invalidated.
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## Allowing unauthenticated requests
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To allow un-authenticated requests to certain paths/URLs, you can use the _Unauthenticated URLs_ / _Unauthenticated Paths_ field.
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Each new line is interpreted as a regular expression, and is compiled and checked using the standard Golang regex parser.
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The behaviour of this field changes depending on which mode you're in.
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### Proxy and Forward auth (single application)
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In this mode, the regular expressions are matched against the Request's Path.
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### Forward auth (domain level)
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In this mode, the regular expressions are matched against the Request's full URL.
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## Dynamic backend selection
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You can configure the backend the proxy should access dynamically via scope mappings. To do this, create a scope mapping with a name and scope of your choice, and set the expression to:
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```python
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return {
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"ak_proxy": {
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"backend_override": f"http://foo.bar.baz/{request.user.username}"
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}
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}
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```
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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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## Host header:ak-version[2025.6.1]
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By default, the proxy provider will use the forwarded host header received from the client. Starting with authentik 2025.6.1, it is possible to dynamically adjust the host header with a property mapping. To do this, create a scope mapping with a name and scope of your choice, and set the expression to:
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```python
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return {
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"ak_proxy": {
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"host_header": "my-internal-host-header"
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}
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}
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```
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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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### Dynamically setting host header
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You can dynamically set the host header to match the **Internal host** value set on the proxy provider. To do this, create a scope mapping with a name and scope of your choice, and set the expression to:
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```python
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from urllib.parse import urlparse
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parsed_url = urlparse(provider.proxyprovider.internal_host)
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return {
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"ak_proxy": {
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"host_header": parsed_url.netloc
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}
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}
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```
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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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