This is the new *Amazon CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [Amazon CloudFormation User Guide](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::KafkaConnect::Connector KafkaClusterClientAuthentication
<a name="aws-properties-kafkaconnect-connector-kafkaclusterclientauthentication"></a>

The client authentication information used in order to authenticate with the Apache Kafka cluster.

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

### JSON
<a name="aws-properties-kafkaconnect-connector-kafkaclusterclientauthentication-syntax.json"></a>

```
{
  "[AuthenticationType](#cfn-kafkaconnect-connector-kafkaclusterclientauthentication-authenticationtype)" : String
}
```

### YAML
<a name="aws-properties-kafkaconnect-connector-kafkaclusterclientauthentication-syntax.yaml"></a>

```
  [AuthenticationType](#cfn-kafkaconnect-connector-kafkaclusterclientauthentication-authenticationtype): String
```

## Properties
<a name="aws-properties-kafkaconnect-connector-kafkaclusterclientauthentication-properties"></a>

`AuthenticationType`  <a name="cfn-kafkaconnect-connector-kafkaclusterclientauthentication-authenticationtype"></a>
The type of client authentication used to connect to the Apache Kafka cluster. Value NONE means that no client authentication is used.  
*Required*: Yes  
*Type*: String  
*Allowed values*: `NONE | IAM`  
*Update requires*: [Replacement](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)