CfnFirewall

class aws_cdk.aws_networkfirewall.CfnFirewall(scope, id, *, firewall_name, firewall_policy_arn, subnet_mappings, vpc_id, delete_protection=None, description=None, firewall_policy_change_protection=None, subnet_change_protection=None, tags=None)

Bases: CfnResource

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.

CloudformationResource

AWS::NetworkFirewall::Firewall

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-networkfirewall-firewall.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_networkfirewall as networkfirewall

cfn_firewall = networkfirewall.CfnFirewall(self, "MyCfnFirewall",
    firewall_name="firewallName",
    firewall_policy_arn="firewallPolicyArn",
    subnet_mappings=[networkfirewall.CfnFirewall.SubnetMappingProperty(
        subnet_id="subnetId"
    )],
    vpc_id="vpcId",

    # the properties below are optional
    delete_protection=False,
    description="description",
    firewall_policy_change_protection=False,
    subnet_change_protection=False,
    tags=[CfnTag(
        key="key",
        value="value"
    )]
)

Create a new AWS::NetworkFirewall::Firewall.

Parameters
  • scope (Construct) –

    • scope in which this resource is defined.

  • id (str) –

    • scoped id of the resource.

  • firewall_name (str) – The descriptive name of the firewall. You can’t change the name of a firewall after you create it.

  • firewall_policy_arn (str) – 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.

  • subnet_mappings (Union[IResolvable, Sequence[Union[SubnetMappingProperty, Dict[str, Any], IResolvable]]]) – The public subnets that Network Firewall is using for the firewall. Each subnet must belong to a different Availability Zone.

  • vpc_id (str) – 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.

  • delete_protection (Union[bool, IResolvable, None]) – 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 (Optional[str]) – A description of the firewall.

  • firewall_policy_change_protection (Union[bool, IResolvable, None]) – 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 .

  • subnet_change_protection (Union[bool, IResolvable, None]) – 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 (Optional[Sequence[Union[CfnTag, Dict[str, Any]]]]) – An array of key-value pairs to apply to this resource. For more information, see Tag .

Methods

add_deletion_override(path)

Syntactic sugar for addOverride(path, undefined).

Parameters

path (str) – The path of the value to delete.

Return type

None

add_depends_on(target)

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.

Parameters

target (CfnResource) –

Return type

None

add_metadata(key, value)

Add a value to the CloudFormation Resource Metadata.

Parameters
  • key (str) –

  • value (Any) –

See

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.

Return type

None

add_override(path, 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:

cfn_resource.add_override("Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes", ["myattribute"])
cfn_resource.add_override("Properties.GlobalSecondaryIndexes.1.ProjectionType", "INCLUDE")

would add the overrides Example:

"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.

Parameters
  • path (str) –

    • The path of the property, you can use dot notation to override values in complex types. Any intermdediate keys will be created as needed.

  • value (Any) –

    • The value. Could be primitive or complex.

Return type

None

add_property_deletion_override(property_path)

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

Parameters

property_path (str) – The path to the property.

Return type

None

add_property_override(property_path, value)

Adds an override to a resource property.

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

Parameters
  • property_path (str) – The path of the property.

  • value (Any) – The value.

Return type

None

apply_removal_policy(policy=None, *, apply_to_update_replace_policy=None, default=None)

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).

Parameters
  • policy (Optional[RemovalPolicy]) –

  • apply_to_update_replace_policy (Optional[bool]) – Apply the same deletion policy to the resource’s “UpdateReplacePolicy”. Default: true

  • default (Optional[RemovalPolicy]) – The default policy to apply in case the removal policy is not defined. Default: - Default value is resource specific. To determine the default value for a resoure, please consult that specific resource’s documentation.

Return type

None

get_att(attribute_name)

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.

Parameters

attribute_name (str) – The name of the attribute.

Return type

Reference

get_metadata(key)

Retrieve a value value from the CloudFormation Resource Metadata.

Parameters

key (str) –

See

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.

Return type

Any

inspect(inspector)

Examines the CloudFormation resource and discloses attributes.

Parameters

inspector (TreeInspector) –

  • tree inspector to collect and process attributes.

Return type

None

override_logical_id(new_logical_id)

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

Parameters

new_logical_id (str) – The new logical ID to use for this stack element.

Return type

None

to_string()

Returns a string representation of this construct.

Return type

str

Returns

a string representation of this resource

Attributes

CFN_RESOURCE_TYPE_NAME = 'AWS::NetworkFirewall::Firewall'
attr_endpoint_ids

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"] .

CloudformationAttribute

EndpointIds

Return type

List[str]

attr_firewall_arn

The Amazon Resource Name (ARN) of the Firewall .

CloudformationAttribute

FirewallArn

Return type

str

attr_firewall_id

The name of the Firewall resource.

CloudformationAttribute

FirewallId

Return type

str

cfn_options

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

Return type

ICfnResourceOptions

cfn_resource_type

AWS resource type.

Return type

str

creation_stack

return:

the stack trace of the point where this Resource was created from, sourced from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most node +internal+ entries filtered.

Return type

List[str]

delete_protection

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 .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-networkfirewall-firewall.html#cfn-networkfirewall-firewall-deleteprotection

Return type

Union[bool, IResolvable, None]

description

A description of the firewall.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-networkfirewall-firewall.html#cfn-networkfirewall-firewall-description

Return type

Optional[str]

firewall_name

The descriptive name of the firewall.

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

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-networkfirewall-firewall.html#cfn-networkfirewall-firewall-firewallname

Return type

str

firewall_policy_arn

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.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-networkfirewall-firewall.html#cfn-networkfirewall-firewall-firewallpolicyarn

Return type

str

firewall_policy_change_protection

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 .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-networkfirewall-firewall.html#cfn-networkfirewall-firewall-firewallpolicychangeprotection

Return type

Union[bool, IResolvable, None]

logical_id

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).

Return type

str

Returns

the logical ID as a stringified token. This value will only get resolved during synthesis.

node

The construct tree node associated with this construct.

Return type

ConstructNode

ref

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 }).

Return type

str

stack

The stack in which this element is defined.

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

Return type

Stack

subnet_change_protection

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 .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-networkfirewall-firewall.html#cfn-networkfirewall-firewall-subnetchangeprotection

Return type

Union[bool, IResolvable, None]

subnet_mappings

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

Each subnet must belong to a different Availability Zone.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-networkfirewall-firewall.html#cfn-networkfirewall-firewall-subnetmappings

Return type

Union[IResolvable, List[Union[SubnetMappingProperty, IResolvable]]]

tags

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

For more information, see Tag .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-networkfirewall-firewall.html#cfn-networkfirewall-firewall-tags

Return type

TagManager

vpc_id

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.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-networkfirewall-firewall.html#cfn-networkfirewall-firewall-vpcid

Return type

str

Static Methods

classmethod is_cfn_element(x)

Returns true if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of instanceof to allow stack elements from different versions of this library to be included in the same stack.

Parameters

x (Any) –

Return type

bool

Returns

The construct as a stack element or undefined if it is not a stack element.

classmethod is_cfn_resource(construct)

Check whether the given construct is a CfnResource.

Parameters

construct (IConstruct) –

Return type

bool

classmethod is_construct(x)

Return whether the given object is a Construct.

Parameters

x (Any) –

Return type

bool

SubnetMappingProperty

class CfnFirewall.SubnetMappingProperty(*, subnet_id)

Bases: object

The ID for a subnet that you want to associate with the firewall.

AWS Network Firewall creates an instance of the associated firewall in each subnet that you specify, to filter traffic in the subnet’s Availability Zone.

Parameters

subnet_id (str) – The unique identifier for the subnet.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-networkfirewall-firewall-subnetmapping.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_networkfirewall as networkfirewall

subnet_mapping_property = networkfirewall.CfnFirewall.SubnetMappingProperty(
    subnet_id="subnetId"
)

Attributes

subnet_id

The unique identifier for the subnet.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-networkfirewall-firewall-subnetmapping.html#cfn-networkfirewall-firewall-subnetmapping-subnetid

Return type

str