## Overview


Auth0 acts as a SAML 2.0 identity provider for FOSSA. To connect them, you create an application in Auth0, enable its SAML2 Web App addon, then exchange a signing certificate and sign-on URLs between Auth0 and FOSSA.

{% callout type="info" %}
SAML single sign-on must be enabled for your organization before the settings below appear. SSO is a [premium feature](/docs/organization-management/single-sign-on), contact your FOSSA account team to enable it.
{% /callout %}

Before you start, open FOSSA's authentication settings in another tab: go to **Settings → Organization → Authentication**. The **Callback URL** shown there is needed while configuring Auth0, and you'll paste Auth0's certificate and sign-on URL back into this page at the end.

## Configuring the Auth0 application

{% steps %}
{% step title="Create an application in Auth0" %}
In the Auth0 admin panel, go to **Applications → Create Application** and choose **Single Page App** as the application type. You can ignore the Quick Start wizard that opens.
{% /step %}
{% step title="Open advanced settings" %}
Open the **Settings** tab from the bar at the top, scroll to the bottom, and click **Show Advanced Settings**.
{% /step %}
{% step title="Copy the signing certificate into FOSSA" %}
On the **Certificates** tab, copy the **Signing Certificate**. In FOSSA, on the **Settings → Organization → Authentication** page, paste it into the **Certificate** field.
{% /step %}
{% step title="Enable and configure the SAML2 addon" %}
Scroll back to the top and open the **Addons** tab, then click **SAML2 Web App**. Copy the **Callback URL** from FOSSA's Authentication page into the **Application Callback URL** field in Auth0. In the **Settings** box, paste the following, then click **Save**:

```json
{
  "nameIdentifierProbes": [
    "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress"
  ]
}
```

The `nameIdentifierProbes` value tells Auth0 to send the user's email address as the SAML Name ID, which FOSSA uses to identify the user.
{% /step %}
{% step title="Copy the identity provider login URL into FOSSA" %}
Open the **Usage** tab and copy the **Identity Provider Login URL**. In FOSSA, paste it into the **Identity Provider Single Sign On URL** field on the Authentication page.
{% /step %}
{% step title="Save in FOSSA" %}
Click **Save Changes** on FOSSA's Authentication page.
{% /step %}
{% /steps %}

## Result

Auth0 is now configured to authenticate users to FOSSA. For their first login, users must visit the **Identity Provider Login URL** from Auth0, which redirects them to FOSSA and creates their account. After that, they can sign in directly from Auth0, or by entering their email address on the FOSSA login page.

{% callout type="info" %}
FOSSA can also set each user's organization role and synchronize their team membership from SAML attributes. See the [SAML attributes guide](/docs/organization-management/single-sign-on/saml-attributes) for the supported `role` and `teams` claims.
{% /callout %}

Configure Auth0 as a SAML identity provider for single sign-on to FOSSA.

Auth0

G Suite

Active Directory Federation Service

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