# Enabling IAM database authentication in Amazon Neptune
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By default, IAM database authentication is disabled when you create an Amazon Neptune DB cluster. You can enable IAM database authentication (or disable it again) using the AWS Management Console.

To create a new Neptune DB cluster with IAM authentication by using the console, follow the instructions for creating a Neptune DB cluster in [Launching a Neptune DB cluster using the AWS Management Console](manage-console-launch-console.md).

On the second page of the creation process, for **Enable IAM DB Authentication**, choose **Yes**.

**To enable or disable IAM authentication for an existing DB instance or cluster**

1. Sign in to the AWS Management Console, and open the Amazon Neptune console at [https://console.aws.amazon.com/neptune/home](https://console.aws.amazon.com/neptune/home).

1. In the navigation pane, choose **Clusters**.

1. Choose the Neptune DB cluster that you want to modify, and choose **Cluster actions**. Then choose **Modify cluster**.

1. In the **Database options** section, for **IAM DB Authentication**, choose either **Enable IAM DB authorization** or **No** (to disable). Then choose **Continue**.

1. To apply the changes immediately, choose **Apply immediately**.

1. Choose **Modify cluster**.