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::NetworkFirewall::FirewallPolicy StatefulRuleGroupOverride
<a name="aws-properties-networkfirewall-firewallpolicy-statefulrulegroupoverride"></a>

The setting that allows the policy owner to change the behavior of the rule group within a policy. 

## Syntax
<a name="aws-properties-networkfirewall-firewallpolicy-statefulrulegroupoverride-syntax"></a>

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

### JSON
<a name="aws-properties-networkfirewall-firewallpolicy-statefulrulegroupoverride-syntax.json"></a>

```
{
  "[Action](#cfn-networkfirewall-firewallpolicy-statefulrulegroupoverride-action)" : {{String}}
}
```

### YAML
<a name="aws-properties-networkfirewall-firewallpolicy-statefulrulegroupoverride-syntax.yaml"></a>

```
  [Action](#cfn-networkfirewall-firewallpolicy-statefulrulegroupoverride-action): {{String}}
```

## Properties
<a name="aws-properties-networkfirewall-firewallpolicy-statefulrulegroupoverride-properties"></a>

`Action`  <a name="cfn-networkfirewall-firewallpolicy-statefulrulegroupoverride-action"></a>
The action that changes the rule group from `DROP` to `ALERT`. This only applies to managed rule groups.  
*Required*: No  
*Type*: String  
*Allowed values*: `DROP_TO_ALERT`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)