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Support Traefik ForwardAuth without a 401 handler (#1023)
* GH-1015 Adds support for Traefik to OauthStart on '/oauth2/auth' endpoint * Fix incorrect reference to signout path and point to signin path - remove commented out alternative solutions and debug log statements * Remove skip provider button check as SignIn method already does this * Updated traefik example to match existing file configuration reference, updated tests * Update doc and refactor nested conditional statements * Revert code changes as static upstream provides the same functionality - Add doc on using static upstream with Traefik ForwardAuth middleware * update changelog * Move the doc changes to 7.0.x versioned docs * Re-add traefik docs update in the main docs overview.md * add missing oauth2-proxy routing Co-authored-by: Praveen Chinthala <PraveenChinthala@hollandandbarrett.com>
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Praveen Chinthala
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@ -13,6 +13,7 @@
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- [#1028](https://github.com/oauth2-proxy/oauth2-proxy/pull/1028) Refactor templates, update theme and provide styled error pages (@JoelSpeed)
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- [#1039](https://github.com/oauth2-proxy/oauth2-proxy/pull/1039) Ensure errors in tests are logged to the GinkgoWriter (@JoelSpeed)
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- [#980](https://github.com/oauth2-proxy/oauth2-proxy/pull/980) Add Prometheus metrics endpoint
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- [#1023](https://github.com/oauth2-proxy/oauth2-proxy/pull/1023) Update docs on Traefik ForwardAuth support without the use of Traefik 'errors' middleware
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# V7.0.1
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@ -362,6 +362,8 @@ You have to substitute *name* with the actual cookie name you configured via --c
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**This option requires `--reverse-proxy` option to be set.**
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### ForwardAuth with 401 errors middleware
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The [Traefik v2 `ForwardAuth` middleware](https://doc.traefik.io/traefik/middlewares/forwardauth/) allows Traefik to authenticate requests via the oauth2-proxy's `/oauth2/auth` endpoint on every request, which only returns a 202 Accepted response or a 401 Unauthorized response without proxying the whole request through. For example, on Dynamic File (YAML) Configuration:
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```yaml
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@ -425,6 +427,104 @@ http:
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query: "/oauth2/sign_in"
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```
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### ForwardAuth with static upstreams configuration
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Redirect to sign_in functionality provided without the use of `errors` middleware with [Traefik v2 `ForwardAuth` middleware](https://doc.traefik.io/traefik/middlewares/forwardauth/) pointing to oauth2-proxy service's `/` endpoint
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**Following options need to be set on `oauth2-proxy`:**
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- `--upstream=static://202`: Configures a static response for authenticated sessions
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- `--reverseproxy=true`: Enables the use of `X-Forwarded-*` headers to determine redirects correctly
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```yaml
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http:
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routers:
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a-service-route-1:
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rule: "Host(`a-service.example.com`, `b-service.example.com`) && PathPrefix(`/`)"
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service: a-service-backend
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middlewares:
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- oauth-auth-redirect # redirects all unauthenticated to oauth2 signin
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tls:
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certResolver: default
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domains:
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- main: "example.com"
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sans:
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- "*.example.com"
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a-service-route-2:
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rule: "Host(`a-service.example.com`) && PathPrefix(`/no-auto-redirect`)"
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service: a-service-backend
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middlewares:
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- oauth-auth-wo-redirect # unauthenticated session will return a 401
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tls:
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certResolver: default
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domains:
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- main: "example.com"
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sans:
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- "*.example.com"
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services-oauth2-route:
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rule: "Host(`a-service.example.com`, `b-service.example.com`) && PathPrefix(`/oauth2/`)"
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middlewares:
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- auth-headers
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service: oauth-backend
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tls:
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certResolver: default
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domains:
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- main: "example.com"
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sans:
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- "*.example.com"
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oauth2-proxy-route:
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rule: "Host(`oauth.example.com`) && PathPrefix(`/`)"
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middlewares:
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- auth-headers
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service: oauth-backend
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tls:
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certResolver: default
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domains:
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- main: "example.com"
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sans:
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- "*.example.com"
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services:
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a-service-backend:
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loadBalancer:
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servers:
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- url: http://172.16.0.2:7555
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b-service-backend:
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loadBalancer:
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servers:
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- url: http://172.16.0.3:7555
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oauth-backend:
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loadBalancer:
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servers:
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- url: http://172.16.0.1:4180
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middlewares:
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auth-headers:
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headers:
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sslRedirect: true
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stsSeconds: 315360000
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browserXssFilter: true
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contentTypeNosniff: true
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forceSTSHeader: true
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sslHost: example.com
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stsIncludeSubdomains: true
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stsPreload: true
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frameDeny: true
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oauth-auth-redirect:
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forwardAuth:
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address: https://oauth.example.com/
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trustForwardHeader: true
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authResponseHeaders:
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- X-Auth-Request-Access-Token
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- Authorization
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oauth-auth-wo-redirect:
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forwardAuth:
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address: https://oauth.example.com/oauth2/auth
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trustForwardHeader: true
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authResponseHeaders:
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- X-Auth-Request-Access-Token
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- Authorization
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```
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:::note
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If you set up your OAuth2 provider to rotate your client secret, you can use the `client-secret-file` option to reload the secret when it is updated.
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:::
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@ -360,6 +360,8 @@ You have to substitute *name* with the actual cookie name you configured via --c
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**This option requires `--reverse-proxy` option to be set.**
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### ForwardAuth with 401 errors middleware
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The [Traefik v2 `ForwardAuth` middleware](https://doc.traefik.io/traefik/middlewares/forwardauth/) allows Traefik to authenticate requests via the oauth2-proxy's `/oauth2/auth` endpoint on every request, which only returns a 202 Accepted response or a 401 Unauthorized response without proxying the whole request through. For example, on Dynamic File (YAML) Configuration:
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```yaml
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@ -423,6 +425,104 @@ http:
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query: "/oauth2/sign_in"
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```
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### ForwardAuth with static upstreams configuration
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Redirect to sign_in functionality provided without the use of `errors` middleware with [Traefik v2 `ForwardAuth` middleware](https://doc.traefik.io/traefik/middlewares/forwardauth/) pointing to oauth2-proxy service's `/` endpoint
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**Following options need to be set on `oauth2-proxy`:**
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- `--upstream=static://202`: Configures a static response for authenticated sessions
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- `--reverseproxy=true`: Enables the use of `X-Forwarded-*` headers to determine redirects correctly
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```yaml
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http:
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routers:
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a-service-route-1:
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rule: "Host(`a-service.example.com`, `b-service.example.com`) && PathPrefix(`/`)"
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service: a-service-backend
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middlewares:
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- oauth-auth-redirect # redirects all unauthenticated to oauth2 signin
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tls:
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certResolver: default
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domains:
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- main: "example.com"
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sans:
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- "*.example.com"
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a-service-route-2:
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rule: "Host(`a-service.example.com`) && PathPrefix(`/no-auto-redirect`)"
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service: a-service-backend
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middlewares:
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- oauth-auth-wo-redirect # unauthenticated session will return a 401
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tls:
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certResolver: default
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domains:
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- main: "example.com"
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sans:
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- "*.example.com"
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services-oauth2-route:
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rule: "Host(`a-service.example.com`, `b-service.example.com`) && PathPrefix(`/oauth2/`)"
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middlewares:
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- auth-headers
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service: oauth-backend
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tls:
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certResolver: default
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domains:
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- main: "example.com"
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sans:
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- "*.example.com"
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oauth2-proxy-route:
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rule: "Host(`oauth.example.com`) && PathPrefix(`/`)"
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middlewares:
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- auth-headers
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service: oauth-backend
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tls:
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certResolver: default
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domains:
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- main: "example.com"
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sans:
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- "*.example.com"
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services:
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a-service-backend:
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loadBalancer:
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servers:
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- url: http://172.16.0.2:7555
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b-service-backend:
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loadBalancer:
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servers:
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- url: http://172.16.0.3:7555
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oauth-backend:
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loadBalancer:
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servers:
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- url: http://172.16.0.1:4180
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middlewares:
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auth-headers:
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headers:
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sslRedirect: true
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stsSeconds: 315360000
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browserXssFilter: true
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contentTypeNosniff: true
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forceSTSHeader: true
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sslHost: example.com
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stsIncludeSubdomains: true
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stsPreload: true
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frameDeny: true
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oauth-auth-redirect:
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forwardAuth:
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address: https://oauth.example.com/
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trustForwardHeader: true
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authResponseHeaders:
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- X-Auth-Request-Access-Token
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- Authorization
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oauth-auth-wo-redirect:
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forwardAuth:
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address: https://oauth.example.com/oauth2/auth
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trustForwardHeader: true
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authResponseHeaders:
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- X-Auth-Request-Access-Token
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- Authorization
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```
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:::note
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If you set up your OAuth2 provider to rotate your client secret, you can use the `client-secret-file` option to reload the secret when it is updated.
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:::
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