---
title: Signed URLs
description: "#### Overview **Flumotion Smart Multi CDN** allows you to protect access to your content using **Signed URLs**. This feature requires CDNs to verify a signature before granting access to protected content. For an end user to access the content, the…"
url: "https://www.flumotion.com/docs/multiCDN/signed-urls-doc/"
updated: "2026-09-07"
category: Guides / Signed URLs
---

# Signed URLs

#### Overview

**Flumotion Smart Multi CDN** allows you to protect access to your content using **Signed URLs**.

This feature requires CDNs to verify a signature before granting access to protected content. For an end user to access the content, the requested URL must include a valid signature in the query string.

The Flumotion Smart Multi CDN Signed URLs feature generates a **single signature that can be verified across all CDNs configured for your service**.

The URL accessed by the end user should follow this format:

[https://test.example.com/some-resource&YourQueryParams&SignatureQueryParams](https://test.example.com/some-resource&YourQueryParams&SignatureQueryParams)

The `SignatureQueryParams` component must be generated by your backend and is then verified by the different CDNs.

#### Configuring Keys

Signed URLs use keys to verify signatures.

To add a verification key:

1. Navigate to your service.
2. In the sidebar, under **Security**, select **Signed URLs**.
3. Click the **Add New Key** button.
4. Complete the key creation form:

- **Key Name** – Enter a name for the new key.
- Choose whether to create the keys yourself or click **Generate Keys** to generate them automatically.
- If you create the keys manually, provide the **Public Key** and **Encryption Key**.

**Note:** It is crucial to securely store both the **Private Key** and the **Encryption Key**, as both are required to generate signatures.

Once created, the new key will appear in the list of keys.

Click the `code` icon to retrieve and copy the provider-specific key information.

Refer to [Generating Signatures](https://www.flumotion.com/docs/multiCDN/generating-signatures/) for instructions on how to generate signatures.

#### Configuring Behavior

To enable Signed URLs for your traffic, you need to configure the appropriate Behavior.

To create a Behavior:

1. Navigate to your service.
2. Go to the **Behaviors** tab.
3. Click the **Add New Behavior** button.
4. Complete the Behavior configuration form:

- **Name** – Enter the name of the new Behavior.
- **Path Pattern** – Provide a wildcard expression identifying the paths where the Behavior should apply.
- Click **Add Action**.
- From the **Action Type** dropdown, select **URL Signing** and enable it.

**Important:** Once this Behavior is enabled, requests to the protected content that do not contain a valid signature will be blocked by the CDNs.