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# AWS::WAFv2::WebACL ClientSideActionConfig
<a name="aws-properties-wafv2-webacl-clientsideactionconfig"></a>

This is part of the configuration for the managed rules `AWSManagedRulesAntiDDoSRuleSet` in `ManagedRuleGroupConfig`.

## Syntax
<a name="aws-properties-wafv2-webacl-clientsideactionconfig-syntax"></a>

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

### JSON
<a name="aws-properties-wafv2-webacl-clientsideactionconfig-syntax.json"></a>

```
{
  "[Challenge](#cfn-wafv2-webacl-clientsideactionconfig-challenge)" : ClientSideAction
}
```

### YAML
<a name="aws-properties-wafv2-webacl-clientsideactionconfig-syntax.yaml"></a>

```
  [Challenge](#cfn-wafv2-webacl-clientsideactionconfig-challenge): 
    ClientSideAction
```

## Properties
<a name="aws-properties-wafv2-webacl-clientsideactionconfig-properties"></a>

`Challenge`  <a name="cfn-wafv2-webacl-clientsideactionconfig-challenge"></a>
Configuration for the use of the `AWSManagedRulesAntiDDoSRuleSet` rules `ChallengeAllDuringEvent` and `ChallengeDDoSRequests`.   
This setting isn't related to the configuration of the `Challenge` action itself. It only configures the use of the two anti-DDoS rules named here. 
You can enable or disable the use of these rules, and you can configure how to use them when they are enabled.   
*Required*: Yes  
*Type*: [ClientSideAction](aws-properties-wafv2-webacl-clientsideaction.md)  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)