CreateRuleGroup - AWS Network Firewall


Creates the specified stateless or stateful rule group, which includes the rules for network traffic inspection, a capacity setting, and tags.

You provide your rule group specification in your request using either RuleGroup or Rules.

Request Syntax

{ "Capacity": number, "Description": "string", "DryRun": boolean, "RuleGroup": { "RulesSource": { "RulesSourceList": { "GeneratedRulesType": "string", "Targets": [ "string" ], "TargetTypes": [ "string" ] }, "RulesString": "string", "StatefulRules": [ { "Action": "string", "Header": { "Destination": "string", "DestinationPort": "string", "Direction": "string", "Protocol": "string", "Source": "string", "SourcePort": "string" }, "RuleOptions": [ { "Keyword": "string", "Settings": [ "string" ] } ] } ], "StatelessRulesAndCustomActions": { "CustomActions": [ { "ActionDefinition": { "PublishMetricAction": { "Dimensions": [ { "Value": "string" } ] } }, "ActionName": "string" } ], "StatelessRules": [ { "Priority": number, "RuleDefinition": { "Actions": [ "string" ], "MatchAttributes": { "DestinationPorts": [ { "FromPort": number, "ToPort": number } ], "Destinations": [ { "AddressDefinition": "string" } ], "Protocols": [ number ], "SourcePorts": [ { "FromPort": number, "ToPort": number } ], "Sources": [ { "AddressDefinition": "string" } ], "TCPFlags": [ { "Flags": [ "string" ], "Masks": [ "string" ] } ] } } } ] } }, "RuleVariables": { "IPSets": { "string" : { "Definition": [ "string" ] } }, "PortSets": { "string" : { "Definition": [ "string" ] } } }, "StatefulRuleOptions": { "RuleOrder": "string" } }, "RuleGroupName": "string", "Rules": "string", "Tags": [ { "Key": "string", "Value": "string" } ], "Type": "string" }

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.


The maximum operating resources that this rule group can use. Rule group capacity is fixed at creation. When you update a rule group, you are limited to this capacity. When you reference a rule group from a firewall policy, Network Firewall reserves this capacity for the rule group.

You can retrieve the capacity that would be required for a rule group before you create the rule group by calling CreateRuleGroup with DryRun set to TRUE.


You can't change or exceed this capacity when you update the rule group, so leave room for your rule group to grow.

Capacity for a stateless rule group

For a stateless rule group, the capacity required is the sum of the capacity requirements of the individual rules that you expect to have in the rule group.

To calculate the capacity requirement of a single rule, multiply the capacity requirement values of each of the rule's match settings:

  • A match setting with no criteria specified has a value of 1.

  • A match setting with Any specified has a value of 1.

  • All other match settings have a value equal to the number of elements provided in the setting. For example, a protocol setting ["UDP"] and a source setting [""] each have a value of 1. A protocol setting ["UDP","TCP"] has a value of 2. A source setting ["","",""] has a value of 3.

A rule with no criteria specified in any of its match settings has a capacity requirement of 1. A rule with protocol setting ["UDP","TCP"], source setting ["","",""], and a single specification or no specification for each of the other match settings has a capacity requirement of 6.

Capacity for a stateful rule group

For a stateful rule group, the minimum capacity required is the number of individual rules that you expect to have in the rule group.

Type: Integer

Required: Yes


A description of the rule group.

Type: String

Length Constraints: Maximum length of 512.

Pattern: ^.*$

Required: No


Indicates whether you want Network Firewall to just check the validity of the request, rather than run the request.

If set to TRUE, Network Firewall checks whether the request can run successfully, but doesn't actually make the requested changes. The call returns the value that the request would return if you ran it with dry run set to FALSE, but doesn't make additions or changes to your resources. This option allows you to make sure that you have the required permissions to run the request and that your request parameters are valid.

If set to FALSE, Network Firewall makes the requested changes to your resources.

Type: Boolean

Required: No


An object that defines the rule group rules.


You must provide either this rule group setting or a Rules setting, but not both.

Type: RuleGroup object

Required: No


The descriptive name of the rule group. You can't change the name of a rule group after you create it.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Pattern: ^[a-zA-Z0-9-]+$

Required: Yes


A string containing stateful rule group rules specifications in Suricata flat format, with one rule per line. Use this to import your existing Suricata compatible rule groups.


You must provide either this rules setting or a populated RuleGroup setting, but not both.

You can provide your rule group specification in Suricata flat format through this setting when you create or update your rule group. The call response returns a RuleGroup object that Network Firewall has populated from your string.

Type: String

Length Constraints: Minimum length of 0. Maximum length of 2000000.

Required: No


The key:value pairs to associate with the resource.

Type: Array of Tag objects

Array Members: Minimum number of 1 item. Maximum number of 200 items.

Required: No


Indicates whether the rule group is stateless or stateful. If the rule group is stateless, it contains stateless rules. If it is stateful, it contains stateful rules.

Type: String


Required: Yes

Response Syntax

{ "RuleGroupResponse": { "Capacity": number, "ConsumedCapacity": number, "Description": "string", "NumberOfAssociations": number, "RuleGroupArn": "string", "RuleGroupId": "string", "RuleGroupName": "string", "RuleGroupStatus": "string", "Tags": [ { "Key": "string", "Value": "string" } ], "Type": "string" }, "UpdateToken": "string" }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.


The high-level properties of a rule group. This, along with the RuleGroup , define the rule group. You can retrieve all objects for a rule group by calling DescribeRuleGroup .

Type: RuleGroupResponse object


A token used for optimistic locking. Network Firewall returns a token to your requests that access the rule group. The token marks the state of the rule group resource at the time of the request.

To make changes to the rule group, you provide the token in your request. Network Firewall uses the token to ensure that the rule group hasn't changed since you last retrieved it. If it has changed, the operation fails with an InvalidTokenException. If this happens, retrieve the rule group again to get a current copy of it with a current token. Reapply your changes as needed, then try the operation again using the new token.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1024.

Pattern: ^([0-9a-f]{8})-([0-9a-f]{4}-){3}([0-9a-f]{12})$


For information about the errors that are common to all actions, see Common Errors.


AWS doesn't currently have enough available capacity to fulfill your request. Try your request later.

HTTP Status Code: 500


Your request is valid, but Network Firewall couldn’t perform the operation because of a system problem. Retry your request.

HTTP Status Code: 500


The operation failed because of a problem with your request. Examples include:

  • You specified an unsupported parameter name or value.

  • You tried to update a property with a value that isn't among the available types.

  • Your request references an ARN that is malformed, or corresponds to a resource that isn't valid in the context of the request.

HTTP Status Code: 400


Unable to perform the operation because doing so would violate a limit setting.

HTTP Status Code: 400


Unable to process the request due to throttling limitations.

HTTP Status Code: 400

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: