class CfnFirewall (construct)

Language	Type name
.NET	`Amazon.CDK.AWS.NetworkFirewall.CfnFirewall`
Java	`software.amazon.awscdk.services.networkfirewall.CfnFirewall`
Python	`aws_cdk.aws_networkfirewall.CfnFirewall`
TypeScript	`@aws-cdk/aws-networkfirewall` » `CfnFirewall`

Implements IConstruct, IConstruct, IDependable, IInspectable

A CloudFormation AWS::NetworkFirewall::Firewall.

Use the Firewall to provide stateful, managed, network firewall and intrusion detection and prevention filtering for your VPCs in Amazon VPC .

The firewall defines the configuration settings for an AWS Network Firewall firewall. The settings include the firewall policy, the subnets in your VPC to use for the firewall endpoints, and any tags that are attached to the firewall AWS resource.

Example

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as networkfirewall from '@aws-cdk/aws-networkfirewall';
const cfnFirewall = new networkfirewall.CfnFirewall(this, 'MyCfnFirewall', {
  firewallName: 'firewallName',
  firewallPolicyArn: 'firewallPolicyArn',
  subnetMappings: [{
    subnetId: 'subnetId',

    // the properties below are optional
    ipAddressType: 'ipAddressType',
  }],
  vpcId: 'vpcId',

  // the properties below are optional
  deleteProtection: false,
  description: 'description',
  firewallPolicyChangeProtection: false,
  subnetChangeProtection: false,
  tags: [{
    key: 'key',
    value: 'value',
  }],
});

Initializer

new CfnFirewall(scope: Construct, id: string, props: CfnFirewallProps)

Parameters

scope Construct — - scope in which this resource is defined.
id string — - scoped id of the resource.
props CfnFirewallProps — - resource properties.

Create a new AWS::NetworkFirewall::Firewall.

Construct Props

Name	Type	Description
firewallName	`string`	The descriptive name of the firewall.
firewallPolicyArn	`string`	The Amazon Resource Name (ARN) of the firewall policy.
subnetMappings	`IResolvable` `\|` `SubnetMappingProperty` `\|` `IResolvable[]`	The public subnets that Network Firewall is using for the firewall.
vpcId	`string`	The unique identifier of the VPC where the firewall is in use.
deleteProtection?	`boolean \|` `IResolvable`	A flag indicating whether it is possible to delete the firewall.
description?	`string`	A description of the firewall.
firewallPolicyChangeProtection?	`boolean \|` `IResolvable`	A setting indicating whether the firewall is protected against a change to the firewall policy association.
subnetChangeProtection?	`boolean \|` `IResolvable`	A setting indicating whether the firewall is protected against changes to the subnet associations.
tags?	`CfnTag[]`	An array of key-value pairs to apply to this resource.

firewallName

Type: string

The descriptive name of the firewall.

You can't change the name of a firewall after you create it.

firewallPolicyArn

Type: string

The Amazon Resource Name (ARN) of the firewall policy.

The relationship of firewall to firewall policy is many to one. Each firewall requires one firewall policy association, and you can use the same firewall policy for multiple firewalls.

subnetMappings

Type: IResolvable | SubnetMappingProperty | IResolvable[]

The public subnets that Network Firewall is using for the firewall.

Each subnet must belong to a different Availability Zone.

vpcId

Type: string

The unique identifier of the VPC where the firewall is in use.

You can't change the VPC of a firewall after you create the firewall.

deleteProtection?

Type: boolean | IResolvable (optional)

A flag indicating whether it is possible to delete the firewall.

A setting of TRUE indicates that the firewall is protected against deletion. Use this setting to protect against accidentally deleting a firewall that is in use. When you create a firewall, the operation initializes this flag to TRUE .

description?

Type: string (optional)

A description of the firewall.

firewallPolicyChangeProtection?

Type: boolean | IResolvable (optional)

A setting indicating whether the firewall is protected against a change to the firewall policy association.

Use this setting to protect against accidentally modifying the firewall policy for a firewall that is in use. When you create a firewall, the operation initializes this setting to TRUE .

subnetChangeProtection?

Type: boolean | IResolvable (optional)

A setting indicating whether the firewall is protected against changes to the subnet associations.

Use this setting to protect against accidentally modifying the subnet associations for a firewall that is in use. When you create a firewall, the operation initializes this setting to TRUE .

tags?

Type: CfnTag[] (optional)

An array of key-value pairs to apply to this resource.

For more information, see Tag .

Properties

Name	Type	Description
attrEndpointIds	`string[]`	The unique IDs of the firewall endpoints for all of the subnets that you attached to the firewall.
attrFirewallArn	`string`	The Amazon Resource Name (ARN) of the `Firewall` .
attrFirewallId	`string`	The name of the `Firewall` resource.
cfnOptions	`ICfnResourceOptions`	Options for this resource, such as condition, update policy etc.
cfnProperties	`{ [string]: any }`
cfnResourceType	`string`	AWS resource type.
creationStack	`string[]`
firewallName	`string`	The descriptive name of the firewall.
firewallPolicyArn	`string`	The Amazon Resource Name (ARN) of the firewall policy.
logicalId	`string`	The logical ID for this CloudFormation stack element.
node	`ConstructNode`	The construct tree node associated with this construct.
ref	`string`	Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.
stack	`Stack`	The stack in which this element is defined.
subnetMappings	`IResolvable` `\|` `SubnetMappingProperty` `\|` `IResolvable[]`	The public subnets that Network Firewall is using for the firewall.
tags	`TagManager`	An array of key-value pairs to apply to this resource.
vpcId	`string`	The unique identifier of the VPC where the firewall is in use.
deleteProtection?	`boolean \|` `IResolvable`	A flag indicating whether it is possible to delete the firewall.
description?	`string`	A description of the firewall.
firewallPolicyChangeProtection?	`boolean \|` `IResolvable`	A setting indicating whether the firewall is protected against a change to the firewall policy association.
subnetChangeProtection?	`boolean \|` `IResolvable`	A setting indicating whether the firewall is protected against changes to the subnet associations.
static CFN_RESOURCE_TYPE_NAME	`string`	The CloudFormation resource type name for this resource class.

attrEndpointIds

Type: string[]

The unique IDs of the firewall endpoints for all of the subnets that you attached to the firewall.

The subnets are not listed in any particular order. For example: ["us-west-2c:vpce-111122223333", "us-west-2a:vpce-987654321098", "us-west-2b:vpce-012345678901"] .

attrFirewallArn

Type: string

The Amazon Resource Name (ARN) of the Firewall .

attrFirewallId

Type: string

The name of the Firewall resource.

cfnOptions

Type: ICfnResourceOptions

Options for this resource, such as condition, update policy etc.

cfnProperties

Type: { [string]: any }

cfnResourceType

Type: string

AWS resource type.

creationStack

Type: string[]

firewallName

Type: string

The descriptive name of the firewall.

You can't change the name of a firewall after you create it.

firewallPolicyArn

Type: string

The Amazon Resource Name (ARN) of the firewall policy.

The relationship of firewall to firewall policy is many to one. Each firewall requires one firewall policy association, and you can use the same firewall policy for multiple firewalls.

logicalId

Type: string

The logical ID for this CloudFormation stack element.

The logical ID of the element is calculated from the path of the resource node in the construct tree.

To override this value, use overrideLogicalId(newLogicalId).

node

Type: ConstructNode

The construct tree node associated with this construct.

ref

Type: string

Return a string that will be resolved to a CloudFormation { Ref } for this element.

If, by any chance, the intrinsic reference of a resource is not a string, you could coerce it to an IResolvable through Lazy.any({ produce: resource.ref }).

stack

Type: Stack

The stack in which this element is defined.

CfnElements must be defined within a stack scope (directly or indirectly).

subnetMappings

Type: IResolvable | SubnetMappingProperty | IResolvable[]

The public subnets that Network Firewall is using for the firewall.

Each subnet must belong to a different Availability Zone.

vpcId

Type: string

The unique identifier of the VPC where the firewall is in use.

You can't change the VPC of a firewall after you create the firewall.

deleteProtection?

Type: boolean | IResolvable (optional)

A flag indicating whether it is possible to delete the firewall.

description?

Type: string (optional)

A description of the firewall.

firewallPolicyChangeProtection?

Type: boolean | IResolvable (optional)

A setting indicating whether the firewall is protected against a change to the firewall policy association.

Use this setting to protect against accidentally modifying the firewall policy for a firewall that is in use. When you create a firewall, the operation initializes this setting to TRUE .

subnetChangeProtection?

Type: boolean | IResolvable (optional)

A setting indicating whether the firewall is protected against changes to the subnet associations.

Use this setting to protect against accidentally modifying the subnet associations for a firewall that is in use. When you create a firewall, the operation initializes this setting to TRUE .

static CFN_RESOURCE_TYPE_NAME

Type: string

The CloudFormation resource type name for this resource class.

Methods

Name	Description
addDeletionOverride(path)	Syntactic sugar for `addOverride(path, undefined)`.
addDependsOn(target)	Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
addMetadata(key, value)	Add a value to the CloudFormation Resource Metadata.
addOverride(path, value)	Adds an override to the synthesized CloudFormation resource.
addPropertyDeletionOverride(propertyPath)	Adds an override that deletes the value of a property from the resource definition.
addPropertyOverride(propertyPath, value)	Adds an override to a resource property.
applyRemovalPolicy(policy?, options?)	Sets the deletion policy of the resource based on the removal policy specified.
getAtt(attributeName)	Returns a token for an runtime attribute of this resource.
getMetadata(key)	Retrieve a value value from the CloudFormation Resource Metadata.
inspect(inspector)	Examines the CloudFormation resource and discloses attributes.
overrideLogicalId(newLogicalId)	Overrides the auto-generated logical ID with a specific ID.
toString()	Returns a string representation of this construct.
protected renderProperties(props)

addDeletionOverride(path)

public addDeletionOverride(path: string): void

Parameters

path string — The path of the value to delete.

Syntactic sugar for addOverride(path, undefined).

addDependsOn(target)

public addDependsOn(target: CfnResource): void

Parameters

target CfnResource

Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.

This can be used for resources across stacks (or nested stack) boundaries and the dependency will automatically be transferred to the relevant scope.

addMetadata(key, value)

public addMetadata(key: string, value: any): void

Parameters

key string
value any

Add a value to the CloudFormation Resource Metadata.

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.)

addOverride(path, value)

public addOverride(path: string, value: any): void

Parameters

path string — - The path of the property, you can use dot notation to override values in complex types.
value any — - The value.

Adds an override to the synthesized CloudFormation resource.

To add a property override, either use addPropertyOverride or prefix path with "Properties." (i.e. Properties.TopicName).

If the override is nested, separate each nested level using a dot (.) in the path parameter. If there is an array as part of the nesting, specify the index in the path.

To include a literal . in the property name, prefix with a \. In most programming languages you will need to write this as "\\." because the \ itself will need to be escaped.

For example,

cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');

would add the overrides

"Properties": {
   "GlobalSecondaryIndexes": [
     {
       "Projection": {
         "NonKeyAttributes": [ "myattribute" ]
         ...
       }
       ...
     },
     {
       "ProjectionType": "INCLUDE"
       ...
     },
   ]
   ...
}

The value argument to addOverride will not be processed or translated in any way. Pass raw JSON values in here with the correct capitalization for CloudFormation. If you pass CDK classes or structs, they will be rendered with lowercased key names, and CloudFormation will reject the template.

addPropertyDeletionOverride(propertyPath)

public addPropertyDeletionOverride(propertyPath: string): void

Parameters

propertyPath string — The path to the property.

Adds an override that deletes the value of a property from the resource definition.

addPropertyOverride(propertyPath, value)

public addPropertyOverride(propertyPath: string, value: any): void

Parameters

propertyPath string — The path of the property.
value any — The value.

Adds an override to a resource property.

Syntactic sugar for addOverride("Properties.<...>", value).

applyRemovalPolicy(policy?, options?)

public applyRemovalPolicy(policy?: RemovalPolicy, options?: RemovalPolicyOptions): void

Parameters

policy RemovalPolicy
options RemovalPolicyOptions

Sets the deletion policy of the resource based on the removal policy specified.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you've removed it from the CDK application or because you've made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).

getAtt(attributeName)

public getAtt(attributeName: string): Reference

Parameters

attributeName string — The name of the attribute.

Returns

Reference

Returns a token for an runtime attribute of this resource.

Ideally, use generated attribute accessors (e.g. resource.arn), but this can be used for future compatibility in case there is no generated attribute.

getMetadata(key)

public getMetadata(key: string): any

Parameters

key string

Returns

any

Retrieve a value value from the CloudFormation Resource Metadata.

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.)

inspect(inspector)

public inspect(inspector: TreeInspector): void

Parameters

inspector TreeInspector — - tree inspector to collect and process attributes.

Examines the CloudFormation resource and discloses attributes.

overrideLogicalId(newLogicalId)

public overrideLogicalId(newLogicalId: string): void

Parameters

newLogicalId string — The new logical ID to use for this stack element.

Overrides the auto-generated logical ID with a specific ID.

toString()

public toString(): string

Returns

string

Returns a string representation of this construct.

protected renderProperties(props)

protected renderProperties(props: { [string]: any }): { [string]: any }

Parameters

props { [string]: any }

Returns

{ [string]: any }