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Signed-off-by: 4d62 <ext@4d62.me>
Co-authored-by: 4d62 <ext@4d62.me>
Co-authored-by: Jens L. <jens@beryju.org>
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@ -12,37 +12,36 @@ title: Amazon Web Services
## Select your method
There are two ways to perform the integration. The classic IAM SAML way, or the 'newer' IAM Identity Center way.
This all depends on your preference and needs.
There are two ways to perform the integration: the classic IAM SAML way, or the 'newer' IAM Identity Center way. This all depends on your preference and needs.
# Method 1: Classic IAM
## Method 1: Classic IAM
## Preparation
### Preparation
Create an application in authentik and note the slug, as this will be used later. Create a SAML provider with the following parameters:
- ACS URL: `https://signin.aws.amazon.com/saml`
- Issuer: `authentik`
- Binding: `Post`
- Audience: `urn:amazon:webservices`
- **ACS URL**: `https://signin.aws.amazon.com/saml`
- **Issuer**: `authentik`
- **Binding**: `Post`
- **Audience**: `urn:amazon:webservices`
You can of course use a custom signing certificate, and adjust durations.
You can use a custom signing certificate and adjust durations as needed.
## AWS
### AWS
Create a role with the permissions you desire, and note the ARN.
After you've created the Property Mappings below, add them to the Provider.
After configuring the Property Mappings, add them to the SAML Provider in AWS.
Create an application, assign policies, and assign this provider.
Export the metadata from authentik, and create an Identity Provider [here](https://console.aws.amazon.com/iam/home#/providers).
Export the metadata from authentik and create a new Identity Provider [here](https://console.aws.amazon.com/iam/home#/providers).
#### Role Mapping
The Role mapping specifies the AWS ARN(s) of the identity provider, and the role the user should assume ([see](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_create_saml_assertions.html#saml_role-attribute)).
This Mapping needs to have the SAML Name field set to "https://aws.amazon.com/SAML/Attributes/Role"
This Mapping needs to have the SAML Name field set to `https://aws.amazon.com/SAML/Attributes/Role`.
As expression, you can return a static ARN like so
@ -71,7 +70,7 @@ return [
The RoleSessionMapping specifies what identifier will be shown at the top of the Management Console ([see](https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_providers_create_saml_assertions.html#saml_role-session-attribute)).
This mapping needs to have the SAML Name field set to "https://aws.amazon.com/SAML/Attributes/RoleSessionName".
This mapping needs to have the SAML Name field set to `https://aws.amazon.com/SAML/Attributes/RoleSessionName`.
To use the user's username, use this snippet
@ -79,70 +78,69 @@ To use the user's username, use this snippet
return user.username
```
# Method 2: IAM Identity Center
## Method 2: IAM Identity Center
## Preparation
### Preparation
- A certificate to sign SAML assertions is required. You can use authentik's default certificate, or provide/generate one yourself.
- You may pre-create an AWS application.
## How to integrate with AWS
### How to integrate with AWS
In AWS:
- In AWS navigate to: _IAM Identity Center_ -> _Settings_ -> _Identity Source (tab)_
- On the right side click _Actions_ -> _Change identity source_
- Select _External Identity Provider_
- Under _Service Provider metadata_ download the metadata file.
- In AWS, navigate to: **IAM Identity Center -> Settings -> Identity Source (tab)**
- On the right side, click **Actions** -> **Change identity source**
- Select **External Identity Provider**
- Under **Service Provider metadata** download the metadata file.
Now go to your authentik instance, and perform the following steps.
- Under _Providers_ create a new _SAML Provider from metadata_. Give it a name, and upload the metadata file AWS gave you.
- Click _Next_. Give it a name, and close the file.
- Under **Providers**, create a new **SAML Provider from metadata**. Give it a name, and upload the metadata file AWS gave you.
- Click **Next**. Give it a name, and close the file.
- If you haven't done so yet, create an application for AWS and connect the provider to it.
- Navigate to the provider you've just created, and then select _Edit_
- Copy the _Issuer URL_ to the _Audience_ field.
- Under _Advanced Protocol Settings_ set a _Signing Certificate_
- Navigate to the provider you've just created, and then select **Edit**
- Copy the **Issuer URL** to the **Audience** field.
- Under **Advanced Protocol Settings** set a **Signing Certificate**
- Save and Close.
- Under _Related Objects_ download the _Metadata file_, and the _Signing Certificate_
- Under **Related Objects**, download the **Metadata file** and the **Signing Certificate**
Now go back to your AWS instance
- Under _Identity provider metadata_ upload both the the _Metadata_ file and _Signing Certificate_ that authentik gave you.
- Click _Next_.
- In your settings pane, under the tab _Identity Source_, click _Actions_ -> _Manage Authentication_.
- Take note of the _AWS access portal sign-in URL_ (this is especially important if you changed it from the default).
- Under **Identity provider metadata**, upload both the **Metadata** file and **Signing Certificate** that authentik gave you.
- Click **Next**.
- In your settings pane, under the tab **Identity Source**, click **Actions** -> **Manage Authentication**.
- Note the AWS access portal sign-in URL (especially if you have customized it).
Now go back to your authentik instance.
- Navigate to the Application that you created for AWS and click _Edit_.
- Under _UI Settings_ make sure the _Start URL_ matches the _AWS access portal sign-in URL_
- Navigate to the Application that you created for AWS and click **Edit**.
- Under **UI Settings** make sure the **Start URL** matches the **AWS access portal sign-in URL**.
## Caveats and Troubleshooting
:::::info
- Users need to already exist in AWS in order to use them through authentik. AWS will throw an error if it doesn't recognise the user.
- In case you're stuck, you can see the SSO logs in Amazon CloudTrail -> Event History. Look for `ExtenalIdPDirectoryLogin`
Note:
- Ensure users already exist in AWS for authentication through authentik. AWS will throw an error if the user is unrecognized.
- In case you're stuck, you can see the SSO logs in Amazon CloudTrail -> Event History. Look for `ExtenalIdPDirectoryLogin`.
:::::
## Optional: Automated provisioning with SCIM
Some people may opt TO USE the automatic provisioning feature called SCIM (System for Cross-domain Identity Management).
Some people may opt to use the automatic provisioning feature called SCIM (System for Cross-domain Identity Management).
SCIM allows you to synchronize (part of) your directory to AWS's IAM, saving you the hassle of having to create users by hand.
In order to do so, take the following steps in your AWS Identity Center:
To do so, take the following steps in your AWS Identity Center:
- In your _Settings_ pane, locate the _Automatic Provisioning_ information box. Click _Enable_.
- AWS will give you an _SCIM Endpoint_ and a _Access Token_. Take note of these values.
- In your **Settings** pane, locate the **Automatic Provisioning** information box. Click **Enable**.
- AWS provides an SCIM Endpoint and an Access Token. Note these values.
Go back to your authentik instance
- Navigate to _Providers_ -> _Create_
- Select _SCIM Provider_
- Give it a name, under _URL_ enter the _SCIM Endpoint_, and then under _Token_ enter the _Access Token_ AWS provided you with.
- Optionally, change the user filtering settings to your liking. Click _Finish_
- Navigate to **Providers** -> **Create**
- Select **SCIM Provider**
- Give it a name, under **URL** enter the **SCIM Endpoint**, and then under **Token** enter the **Access Token** AWS provided you with.
- Optionally, change the user filtering settings to your liking. Click **Finish**
- Go to _Customization -> Property Mappings_
- Click _Create -> SCIM Mapping_
- Go to **Customization -> Property Mappings**
- Click **Create -> SCIM Mapping**
- Make sure to give the mapping a name that's lexically lower than `authentik default`, for example `AWS SCIM User mapping`
- As the expression, enter:
@ -154,12 +152,12 @@ return {
}
```
- Click _Save_. Navigate back to your SCIM provider, click _Edit_
- Under _User Property Mappings_ select the default mapping and the mapping that you just created.
- Click _Update_
- Click **Save**. Navigate back to your SCIM provider, click **Edit**
- Under **User Property Mappings** select the default mapping and the mapping that you just created.
- Click **Update**
- Navigate to your application, click _Edit_.
- Under _Backchannel providers_ add the SCIM provider that you created.
- Click _Update_
- Navigate to your application, click **Edit**.
- Under **Backchannel providers** add the SCIM provider that you created.
- Click **Update**
The SCIM provider syncs automatically whenever you create/update/remove users, groups, or group membership. You can manually sync by going to your SCIM provider and clicking _Run sync again_. After the SCIM provider has synced, you should see the users and groups in your AWS IAM center.
The SCIM provider syncs automatically whenever you create/update/remove users, groups, or group membership. You can manually sync by going to your SCIM provider and clicking **Run sync again**. After the SCIM provider has synced, you should see the users and groups in your AWS IAM center.