# StatefulRuleGroup
<a name="API_StatefulRuleGroup"></a>

 AWS Network Firewall stateful rule group, used in a [NetworkFirewallPolicyDescription](API_NetworkFirewallPolicyDescription.md). 

## Contents
<a name="API_StatefulRuleGroup_Contents"></a>

 ** Override **   <a name="fms-Type-StatefulRuleGroup-Override"></a>
The action that allows the policy owner to override the behavior of the rule group within a policy.  
Type: [NetworkFirewallStatefulRuleGroupOverride](API_NetworkFirewallStatefulRuleGroupOverride.md) object  
Required: No

 ** Priority **   <a name="fms-Type-StatefulRuleGroup-Priority"></a>
An integer setting that indicates the order in which to run the stateful rule groups in a single Network Firewall firewall policy. This setting only applies to firewall policies that specify the `STRICT_ORDER` rule order in the stateful engine options settings.  
 Network Firewall evalutes each stateful rule group against a packet starting with the group that has the lowest priority setting. You must ensure that the priority settings are unique within each policy. For information about   
 You can change the priority settings of your rule groups at any time. To make it easier to insert rule groups later, number them so there's a wide range in between, for example use 100, 200, and so on.   
Type: Integer  
Required: No

 ** ResourceId **   <a name="fms-Type-StatefulRuleGroup-ResourceId"></a>
The resource ID of the rule group.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1024.  
Pattern: `^([\p{L}\p{Z}\p{N}_.:/=+\-@]*)$`   
Required: No

 ** RuleGroupName **   <a name="fms-Type-StatefulRuleGroup-RuleGroupName"></a>
The name of the rule group.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `^[a-zA-Z0-9-]+$`   
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/fms-2018-01-01/StatefulRuleGroup) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/fms-2018-01-01/StatefulRuleGroup) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/fms-2018-01-01/StatefulRuleGroup)