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# AWS::NetworkFirewall::RuleGroup RulesSource
<a name="aws-properties-networkfirewall-rulegroup-rulessource"></a>

The stateless or stateful rules definitions for use in a single rule group. Each rule group requires a single `RulesSource`. You can use an instance of this for either stateless rules or stateful rules. 

## Syntax
<a name="aws-properties-networkfirewall-rulegroup-rulessource-syntax"></a>

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

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

```
{
  "[RulesSourceList](#cfn-networkfirewall-rulegroup-rulessource-rulessourcelist)" : {{RulesSourceList}},
  "[RulesString](#cfn-networkfirewall-rulegroup-rulessource-rulesstring)" : {{String}},
  "[StatefulRules](#cfn-networkfirewall-rulegroup-rulessource-statefulrules)" : {{[ StatefulRule, ... ]}},
  "[StatelessRulesAndCustomActions](#cfn-networkfirewall-rulegroup-rulessource-statelessrulesandcustomactions)" : {{StatelessRulesAndCustomActions}}
}
```

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

```
  [RulesSourceList](#cfn-networkfirewall-rulegroup-rulessource-rulessourcelist): {{
    RulesSourceList}}
  [RulesString](#cfn-networkfirewall-rulegroup-rulessource-rulesstring): {{
    String}}
  [StatefulRules](#cfn-networkfirewall-rulegroup-rulessource-statefulrules): {{
    - StatefulRule}}
  [StatelessRulesAndCustomActions](#cfn-networkfirewall-rulegroup-rulessource-statelessrulesandcustomactions): {{
    StatelessRulesAndCustomActions}}
```

## Properties
<a name="aws-properties-networkfirewall-rulegroup-rulessource-properties"></a>

`RulesSourceList`  <a name="cfn-networkfirewall-rulegroup-rulessource-rulessourcelist"></a>
Stateful inspection criteria for a domain list rule group.   
*Required*: No  
*Type*: [RulesSourceList](aws-properties-networkfirewall-rulegroup-rulessourcelist.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`RulesString`  <a name="cfn-networkfirewall-rulegroup-rulessource-rulesstring"></a>
Stateful inspection criteria, provided in Suricata compatible rules. Suricata is an open-source threat detection framework that includes a standard rule-based language for network traffic inspection.  
These rules contain the inspection criteria and the action to take for traffic that matches the criteria, so this type of rule group doesn't have a separate action setting.  
You can't use the `priority` keyword if the `RuleOrder` option in StatefulRuleOptions is set to `STRICT_ORDER`.
*Required*: No  
*Type*: String  
*Minimum*: `0`  
*Maximum*: `1000000`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`StatefulRules`  <a name="cfn-networkfirewall-rulegroup-rulessource-statefulrules"></a>
An array of individual stateful rules inspection criteria to be used together in a stateful rule group. Use this option to specify simple Suricata rules with protocol, source and destination, ports, direction, and rule options. For information about the Suricata `Rules` format, see [Rules Format](https://suricata.readthedocs.io/en/suricata-7.0.8/rules/intro.html).   
*Required*: No  
*Type*: Array of [StatefulRule](aws-properties-networkfirewall-rulegroup-statefulrule.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`StatelessRulesAndCustomActions`  <a name="cfn-networkfirewall-rulegroup-rulessource-statelessrulesandcustomactions"></a>
Stateless inspection criteria to be used in a stateless rule group.   
*Required*: No  
*Type*: [StatelessRulesAndCustomActions](aws-properties-networkfirewall-rulegroup-statelessrulesandcustomactions.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)