# Web App Firewall (WAF)

The creation of a Web Application Firewall (WAF) is a one-time process. Create a WAF in the public cloud Console, fetch the ID/ARN, and update the Plan in DuploCloud. Once updated, the WAF can be attached to the Load Balancer.

## Creating a Web Application Firewall (WAF)

When you create a WAF in DuploCloud, an entry is added to the [Web ACL](https://docs.aws.amazon.com/waf/latest/developerguide/web-acl.html). You use this entry [in a later step](#attaching-the-waf-to-a-load-balancer) to attach an ALB Load Balancer to your WAF.

1. In the DuploCloud Portal, navigate to **Administrator** -> **Plans**. The **Plans** page displays.
2. From the **Name** column, select the Plan you want to update.
3. Click the **WAF** tab.<br>

   <figure><img src="https://2471407984-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F68cb0s9ce5UIUKWPuYs8%2Fuploads%2Ftjwhf5zZakE6yPhazMCV%2FWAF%20details%20new.png?alt=media&#x26;token=e5c3fb2f-1a52-47fa-ac1e-5715c4153276" alt=""><figcaption><p>The <strong>Plans</strong> page <strong>WAF</strong> tab</p></figcaption></figure>
4. Click **Add**. The **Add WAF** pane displays.

<div align="left"><figure><img src="https://2471407984-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F68cb0s9ce5UIUKWPuYs8%2Fuploads%2FKmrOhRYilPyHx34K0fxP%2FScreenshot%20(456).png?alt=media&#x26;token=88dd83c0-fbbf-48b9-a3fb-58a40c95afaa" alt=""><figcaption><p>The <strong>Add WAF</strong> pane</p></figcaption></figure></div>

1. In the **Name** field, type the name of your WAF.
2. In the **WAF ARN** field, enter the Amazon Resource Name (ARN).
3. Optionally, enter your **WAF Dashboard URL**.
4. Click **Create**.

## Attaching the WAF to a Load Balancer

{% hint style="warning" %}
Only ALB Load Balancers can be attached to a WAF.
{% endhint %}

1. If you don't yet have an Application Load Balancer (ALB), [create one](https://docs.duplocloud.com/docs/automation-platform/overview/load-balancers#adding-a-load-balancer).
2. In the **Other Settings** card, click **Edit**. The **Other Load Balancer Settings** pane displays.<br>

   <div align="left"><figure><img src="https://2471407984-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F68cb0s9ce5UIUKWPuYs8%2Fuploads%2FCE6TrTqPopqAHMA4kzBw%2FAWS_LB_WAF_Attach.png?alt=media&#x26;token=faf0619a-ba52-4194-92cd-ec80d49a235c" alt=""><figcaption><p><strong>Other Load Balancer Settings</strong> for attaching a WAF (via the <strong>Web ACL</strong> field) to an ALB Load Balancer<br></p></figcaption></figure></div>
3. From the **Web ACL** list box, select a [WAF that you have added to DuploCloud](#creating-a-web-application-firewall-waf).
4. Complete the other required fields in the **Other Load Balancer Settings** pane.
5. Click **Update**.

## Updating an existing WAF <a href="#id-1-toc-title" id="id-1-toc-title"></a>

1. From the DuploCloud portal, navigate to **Administrator** -> **Plans**.
2. From the **Name** column, select the Plan associated with the WAF you want to update.
3. Click the **WAF** tab.
4. Click on the menu icon (<img src="https://2471407984-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F68cb0s9ce5UIUKWPuYs8%2Fuploads%2FxLkcUNKntyMJKGrP7Wad%2Fmenu%20icon.png?alt=media&#x26;token=c4f245e3-80f8-4573-a7c8-7d4233e7d1be" alt="" data-size="line">) in the row of the existing WAF that you want to update, and select **Edit**. The **Update WAF&#x20;*****YOUR\_WAF\_NAME*** pane displays.<br>

   <div align="left"><figure><img src="https://2471407984-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F68cb0s9ce5UIUKWPuYs8%2Fuploads%2FwZLScB1DjNRk01WnTm4W%2Fupdating%20WAF.png?alt=media&#x26;token=71b0143d-6620-46de-b0bf-b4be4c045cd4" alt=""><figcaption></figcaption></figure></div>
5. Update the **Name** and/or **WAF ARN**.
6. Update or add a **WAF Dashboard URL**.
7. Click **Update**. The WAF is updated.

## Analyzing inbound traffic with the WAF dashboard <a href="#id-1-toc-title" id="id-1-toc-title"></a>

DuploCloud also provides a WAF Dashboard through which you can analyze the traffic that is coming in and the requests that are blocked. The Dashboard can be accessed from the left navigation panel: **Observability** -> **WAF**.

![WAF Dashboard](https://2471407984-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F68cb0s9ce5UIUKWPuYs8%2Fuploads%2Fd2EbpLaFliuMpECtVETT%2Fwaf.png?alt=media\&token=65caa08a-ce44-4bd4-a029-aafa44a33d30)


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