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docs: improve tailscale integration (#5330) 

This is an addendum to #5287 and includes some improvements.

Signed-off-by: Dennis Gaida <2392217+DennisGaida@users.noreply.github.com>
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Dennis Gaida 2023-04-30 01:18:57 +02:00 committed by GitHub
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docs/content/en/integration/openid-connect/tailscale/index.md
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@ -44,8 +44,8 @@ The configuration in Authelia is straightforwarded: Tailscale is just another `i
To configure [Tailscale] to utilize Authelia as an [OpenID Connect 1.0] Provider, you will need a public WebFinger reply for your domain (see [RFC 7033](https://www.rfc-editor.org/rfc/rfc7033#section-3.1)) and point it to Authelia. The steps necessary are outlined in the Tailscale documentation on [Custom OIDC providers](https://tailscale.com/kb/1240/sso-custom-oidc/). This WebFinger reply is not generated by Authelia, so your external webserver hosted at the root of your domain will need to generate the reponse (Check [See also](#see-also) for example implementations). The following steps are necessary to get Tailscale working with Authelia: To configure [Tailscale] to utilize Authelia as an [OpenID Connect 1.0] Provider, you will need a public WebFinger reply for your domain (see [RFC 7033](https://www.rfc-editor.org/rfc/rfc7033#section-3.1)) and point it to Authelia. The steps necessary are outlined in the Tailscale documentation on [Custom OIDC providers](https://tailscale.com/kb/1240/sso-custom-oidc/). This WebFinger reply is not generated by Authelia, so your external webserver hosted at the root of your domain will need to generate the reponse (Check [See also](#see-also) for example implementations). The following steps are necessary to get Tailscale working with Authelia:
1. Your domain will need to reply to a WebFinger request for your Authelia account 1. Your domain will need to reply to a WebFinger request for your Authelia account
2. Your domain root is `example.com` and the Authelia account in question is `user@example.com`, the WebFinger request will be: `https://example.com/.well-known/webfinger/?resource=acct:user@example.com` 2. Your domain root is `example.com` and the Authelia account in question is `user@example.com`, the WebFinger request will be: `https://example.com/.well-known/webfinger/?resource=acct:user@example.com` (the complete request is `https://example.com/.well-known/webfinger?rel=http%3A%2F%2Fopenid.net%2Fspecs%2Fconnect%2F1.0%2Fissuer&resource=acct%3Auser%40example.com`)
3. The WebFinger request will need to be answered with the following example reply: 3. The WebFinger request needs to be answered with the following example reply:
``` ```
{ {
"subject" : "acct:user@example.com", "subject" : "acct:user@example.com",
@ -61,9 +61,11 @@ To configure [Tailscale] to utilize Authelia as an [OpenID Connect 1.0] Provider
4. For any other users that you want to add to Tailscale, you will need to to provide similar WebFinger replies (e.g. for `user2@example.com` or `user3@example.com`) 4. For any other users that you want to add to Tailscale, you will need to to provide similar WebFinger replies (e.g. for `user2@example.com` or `user3@example.com`)
5. Once you have the WebFinger reply set up and your [Authelia OpenID Connect Discovery endpoint](https://www.authelia.com/integration/openid-connect/introduction/#well-known-discovery-endpoints) is working (e.g. `https://auth.example.com/.well-known/openid-configuration`), you can sign up for a **new Tailnet** (currently migration isn't supported) via the link: [Sign up with OIDC](https://login.tailscale.com/start/oidc) where you will see the following screen: 5. Once you have the WebFinger reply set up and your [Authelia OpenID Connect Discovery endpoint](https://www.authelia.com/integration/openid-connect/introduction/#well-known-discovery-endpoints) is working (e.g. `https://auth.example.com/.well-known/openid-configuration`), you can sign up for a **new Tailnet** (currently migration isn't supported) via the link: [Sign up with OIDC](https://login.tailscale.com/start/oidc) where you will see the following screen:
{{< figure src="tailscale_signup_1.png" alt="Tailscale Signup Screen 1" width="300" >}} {{< figure src="tailscale_signup_1.png" alt="Tailscale Signup Screen 1" width="300" >}}
**Note:** Even though the WebFinger URL displayed is `https://example.com/.well-known/webfinger`, the actual GET request will be including request parameters, most importantly `resource`.
6. After clicking on **Get OIDC Issuer**, Tailscale will fetch the WebFinger reply via `https://example.com/.well-known/webfinger/?resource=acct:user@example.com` and follow the set `href` to `https://auth.example.com/.well-known/openid-configuration`. 6. After clicking on **Get OIDC Issuer**, Tailscale will fetch the WebFinger reply via `https://example.com/.well-known/webfinger/?resource=acct:user@example.com` and follow the set `href` to `https://auth.example.com/.well-known/openid-configuration`.
**Note:** make sure that the `href` URL matches the `issuer` URL returned from the Authelia OIDC dicsovery endpoint **Note:** make sure that the `href` URL matches the `issuer` URL returned from the Authelia OIDC dicsovery endpoint
7. On the next screen you will need to add your client ID & secret configured in Authelia to finish the OIDC provider registration in [Tailscale]. 7. On the next screen you will need to add your client ID & secret configured in Authelia to finish the OIDC provider registration in [Tailscale]. See the following example screenshot:
{{< figure src="tailscale_signup_2.png" alt="Tailscale Signup Screen 2" width="300" >}}
### Authelia ### Authelia

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