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# AWS::EC2::ClientVpnEndpoint DirectoryServiceAuthenticationRequest

Describes the Active Directory to be used for client authentication.
## Syntax

To declare this entity in your CloudFormation template, use the following syntax:
### JSON

```
{
 "[DirectoryId](#cfn-ec2-clientvpnendpoint-directoryserviceauthenticationrequest-directoryid)" : {{String}}
}
```
### YAML

```
 [DirectoryId](#cfn-ec2-clientvpnendpoint-directoryserviceauthenticationrequest-directoryid): {{String}}
```
## Properties

`DirectoryId` 
The ID of the Active Directory to be used for authentication. 
*Required*: Yes 
*Type*: String 
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