Configuring SAML based Single Sign-On

This feature is only available on self-hosted Enterprise licensed instances of FlowFuse.

The SSO Configurations are managed by the platform Administrator under the Admin Settings > Settings > SSO section.

To fully configure SAML SSO, you will need to generate a configuration in FlowFuse, provide some of the generated values to your Identity Provider, and copy back some values they provide.

Create a SSO Configuration

  1. Click 'Create SSO Configuration' to create a new config

  2. Give the configuration a name to help identify it, and provide the email domain name this configuration should apply to. Ensure the SAML option is selected - this cannot be changed after the configuration is created.

  3. Click 'Create configuration'

    At this point, the configuration has been created and metadata generated for the configuration, but it is not active.

  4. Copy the ACS URL and Entity ID / Issuer values as you will need to configure your Identity Provider with these values.

You can save the configuration at any time by clicking the Update configuration button. The configuration will only be enabled when you tick the active checkbox and save the changes.

Configure your Identify Provider

Every Identity Provider uses slightly different terminology and varies what information they require and what they provide. This can make it a tricky task to complete.

We provide specific guides for the providers we have verified below.

If you have a working configuration for a provider not listed here, please do share the details so we can add them to the list.

The general points are:

  1. Your Identity Provider will supply you with some of the following values that should be entered into your FlowFuse SAML SSO Configuration:

    • Single Sign-On URL - also referred to as 'SAML Endpoint', 'Login URL' or 'IdP SSO URL'.
    • Issuer ID / URL
    • X.509 Certification Public Key - the public key of a certificate used to sign SAML requests.
  2. Configure the NameID SAML option to be EmailAddress and have it return the email of the user logging in. This is how FlowFuse will verify they are a known user on the platform.

Enable your SAML SSO Configuration

Once you have setup both sides of the configuration you can enable it for use by ticking the active checkbox and clicking Update configuration.

## Managing Team Membership with SAML Groups

Some SAML providers allow user group information to be shared as part of the sign-in process. When properly configured, this can be used to manage what FlowFuse teams a user has access to.

To enable this option, select the Manage roles using group assertions in the SSO configuration.

The following configuration options should then be set:

  • Group Assertion Name - this is used to identify the group membership information in the response sent by the Identity Provider. It defaults to ff-roles but can be customised if the Identify Provider requires it.
  • Team Scope - this determines what teams can be managed using this configuration. There are two options:
    • Apply to all teams - this will allow the SAML groups to manage all teams on the platform. This is suitable for a self-hosted installation of FlowFuse with a single SSO configuration for all users on the platform.
    • Apply to selected teams - this will restrict what teams can be managed to the provided list. This is suitable for shared-tenancy platforms with multiple SSO configurations for different groups of users, such as FlowFuse Cloud. When this option is selected, an additional option is available - Allow users to be in other teams. This will allow users who sign-in via this SSO configuration to be members of teams not in the list above. Their membership of those teams will not be managed by the SSO groups. If that option is disabled, then the user will be removed from any teams not in the list above.

SAML Groups configuration

A user's team membership is managed by what groups they are in. When the user logs in, the SAML provider must be configured to provide a list of groups they are a member of as a SAML assertion.

The group name is used to identify a team, using its slug property, and the user's role in the team. The name must take the form ff-<team>-<role>. For example, the group ff-development-owner will container the owners of the team development.

The valid roles for a user in a team are:

  • owner
  • member
  • viewer
  • dashboard

Note: this uses the team slug property to identify the team. This has been chosen to simplify managing the groups in the SAML Provider - rather than using the team's id. However, a team's slug can be changed by a team owner. Doing so will break the link between the group and the team membership - so should only be done with care.

Providers

The following is a non-exhaustive list of the providers that are known to work with FlowFuse SAML SSO.

Microsoft Entra

Microsoft provide a guide for creating a custom SAML Application here.

The following table maps the Entra terminology to the FlowFuse settings.

FlowFuse Setting Entra Setting
ACS URL Reply URL (Assertion Consumer Service URL)
Identity Provider Single Sign-On URL Login URL
Identity Provider Issuer ID / URL Microsoft Entra Identifier
X.509 Certificate Public Key Certificate (Base64)

Within the SAML Signing Certificate configuration, the Signing Option must be set to Sign SAML response and assertion.

The Unique User Identifier (Name ID) claim must be configured to return the value of the user.mail source attribute.

Group Membership Configuration

By default, when enabled, Entra will share group assertions under the name http://schemas.microsoft.com/ws/2008/06/identity/claims/groups and provides the groups as a list of object ids.

Either the Group Assertion Name should be set to this name, or Entra configured to use a custom assertion name that matches the FlowFuse SSO Configuration value.

Entra must also be configured to return group names rather than object ids.

Google Workspace

Google provide a guide for creating a custom SAML Application here.

Google Workspace only supports HTTPS-based SSO URLs. You cannot use it when developing locally using http://localhost:3000.

The following table maps the Google Workspace terminology to the FlowFuse settings.

FlowFuse Setting Google Workspace Setting
Identity Provider Single Sign-On URL SSO URL
Identity Provider Issuer ID / URL Entity ID
X.509 Certificate Public Key Certificate

Within the Service provider details configuration, the Signed response option must be enabled.

OneLogin

Follow this guide to create a OneLogin SAML Test Connector.

FlowFuse Setting OneLogin Setting
Identity Provider Single Sign-On URL SAML 2.0 Endpoint (HTTP)
Identity Provider Issuer ID / URL Issuer URL
X.509 Certificate Public Key X.509 Certificate

Okta

Within your Okta Admin dashboard, browse the App Integration catalog and add a new instance of the SAML Service Provider integration.

On the Sign-On Options section, ensure SAML 2.0 is selected. Below that section you will see a notice saying:

SAML 2.0 in not configured until you complete the setup instructions.

Click the 'View setup instructions' button to open the page in a new window.

Follow the instructions on that - copying the Identity Provider Issuer, Identity Provider HTTP POST URL and Identity Provider Certificate values into the FlowFuse SSO configuration.

Back on the Okta SAML Application configuration page, under the Advanced Sign-on Settings section enter the Assertion Consumer Service URL and Service Provider Entity Id from the FlowFuse SSO configuration.

Under Credential Details section, change the Application username format to Email.

Group Membership Configuration

To configure Okta to return Group assertions, edit the Settings of the SAML Service Provider's SAML 2.0 configuration. Expand the 'Attributes' section and add a Group Attribute Statement.

The name must match the Group Assertion Name in the FlowFuse SSO configuration (default: ff-roles). You can optionally add a filter of ff- so that it only returns groups used by FlowFuse.

Keycloak

Within your Keycloak Admin Console, create a new Client with the following settings:

Under the General Settings:

  • Set Client type to SAML
  • Set the Client ID to the Entity ID / Issuer value from the FlowFuse SSO configuration.

Under the Login Settings:

  • Set Valid redirect URIs to the ACS URL value from the FlowFuse SSO configuration.

Once created and you are shown the full client configuration, make the following additional changes:

  • Set Name ID format to email
  • Under the 'Keys' tab, turn off Client signature required

Save the changes.

Next, select the 'Download adapter config' option under the 'Action' dropdown menu. Select the 'Mod Auth Mellon files' format and click Download.

This will download a zip file. Extract the zip and open the idp-metadata.xml file in a text editor.

The final task is to copy some of the contents of the XML file into the FlowFuse SSO configuration.

  • Copy the value of the entityID attribute into the Identity Provider Issuer ID / URL property
  • Find one of the md:SingleSignOnService tags and copy the value of its Location attribute into the Identity Provider Single Sign-On URL property
  • Copy the contents of the ds:X509Certificate tag into the X.509 Certificate Public Key property