> ## Documentation Index
> Fetch the complete documentation index at: https://help.dingtalk.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Configure and Update the Security Domain

> After importing resources, configure the DingTalk security domain. Follow the steps in this document to complete the setup.

## Prerequisites

Before you start, make sure that an SLB has been purchased under the Alibaba Cloud account (Compute Nest deployment) associated with the Developer Console, and that the SLB is configured with an [HTTP protocol listening port](https://help.aliyun.com/document_detail/85949.html?spm=a2c4g.86438.0.0.19195491uwAdyO). Only CLB is currently supported.

**Warning**

Do not use common HTTPS ports such as 443 or 8443 to redirect HTTP to HTTPS.

## **Steps**

1. Sign in to the Developer Console, go to the app details page, and click **App Release > App Self-Check**.
2. Select the private network SLB to associate, select the authorization agreement, and then click **Association**.
3. After the association is complete, wait for the domain review and domain configuration initialization.

   **Note**

   After you submit the security domain binding request, wait for the DingTalk security review, which usually takes 1 to 2 business days. Once approved, the process automatically binds the private network SLB to the security domain, which takes 1 to 2 business days to take effect. Monitor the status updates. If the request is declined, revise it and resubmit the application.
4. Update the security domain in the app:

   * If the push type is SyncHTTP, use the DingTalk security domain in the push address of the callback URL.
   * Use the DingTalk security domain for the developer's Server-side API domain.
   * If the app is not built with a decoupled front-end and back-end architecture, use the DingTalk security domain for the app Home page URL.

## **Next Steps**

Deploy the app server to [ECS in Compute Nest](https://help.aliyun.com/document_detail/444595.html?spm=a2c4g.290076.0.0.60715167ZJIyYr).