GitHub - cloudposse/terraform-aws-firewall-manager: Terraform module to configure AWS Firewall Manager

Terraform module to create and manage AWS Firewall Manager policies.

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Usage

For a complete example, see examples/complete.

For automated tests of the complete example using bats and Terratest (which tests and deploys the example on AWS), see test.

module "label" {
  source = "cloudposse/label/null"
  # Cloud Posse recommends pinning every module to a specific version
  # version = "x.x.x"

  namespace = "eg"
  stage     = "prod"
  name      = "fms"
  delimiter = "-"

  tags = {
    "BusinessUnit" = "XYZ",
  }
}

module "vpc" {
  source  = "cloudposse/vpc/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version = "x.x.x"

  cidr_block = "10.0.0.0/16"

  context = module.label.context
}

provider "aws" {
  region = "us-east-2"
}

provider "aws" {
  region = "us-east-2"
  alias  = "admin"
  assume_role {
    role_arn = "arn:aws:xyz"
  }
}

module "fms" {
  source = "cloudposse/firewall-manager/aws"
  # Cloud Posse recommends pinning every module to a specific version
  # version = "x.x.x"

  providers = {
    aws.admin = aws.admin
    aws       = aws
  }

  security_groups_usage_audit_policies = [
    {
      name               = "unused-sg"
      resource_type_list = ["AWS::EC2::SecurityGroup"]

      policy_data = {
        delete_unused_security_groups      = false
        coalesce_redundant_security_groups = false
      }
    }
  ]

  security_groups_content_audit_policies = [
    {
      name               = "maxmimum-allowed"
      resource_type_list = ["AWS::EC2::SecurityGroup"]

      policy_data = {
        security_group_action = "allow"
        security_groups       = [module.vpc.security_group_id]
      }
    }
  ]

  security_groups_common_policies = [
    {
      name               = "disabled-all"
      resource_type_list = ["AWS::EC2::SecurityGroup"]

      policy_data = {
        revert_manual_security_group_changes         = false
        exclusive_resource_security_group_management = false
        apply_to_all_ec2_instance_enis               = false
        security_groups                              = [module.vpc.security_group_id]
      }
    }
  ]

  waf_v2_policies = [
    {
      name               = "linux-policy"
      resource_type_list = ["AWS::ElasticLoadBalancingV2::LoadBalancer", "AWS::ApiGateway::Stage"]

      policy_data = {
        default_action                        = "allow"
        override_customer_web_acl_association = false
        pre_process_rule_groups = [
          {
            "managedRuleGroupIdentifier" : {
              "vendorName" : "AWS",
              "managedRuleGroupName" : "AWSManagedRulesLinuxRuleSet",
              "version" : null
            },
            "overrideAction" : { "type" : "NONE" },
            "ruleGroupArn" : null,
            "excludeRules" : [],
            "ruleGroupType" : "ManagedRuleGroup"
          }
        ]
      }
    }
  ]

  context = module.label.context
}

Important

In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.

Examples

Here is an example of using this module:

examples/complete - complete example of using this module

Makefile Targets

Available targets:

  help                                Help screen
  help/all                            Display help for all targets
  help/short                          This help short screen
  lint                                Lint terraform code
  test/%                              Run Terraform commands in the examples/complete folder; e.g. make test/plan

Requirements

Name	Version
terraform	>= 1.0
aws	>= 4.9.0

Providers

Name	Version
aws	>= 4.9.0
aws.admin	>= 4.9.0

Modules

Name	Source	Version
dns_firewall_label	cloudposse/label/null	0.25.0
firehose_label	cloudposse/label/null	0.25.0
firehose_s3_bucket	cloudposse/s3-bucket/aws	4.3.0
network_firewall_label	cloudposse/label/null	0.25.0
security_groups_common_label	cloudposse/label/null	0.25.0
security_groups_content_audit_label	cloudposse/label/null	0.25.0
security_groups_usage_audit_label	cloudposse/label/null	0.25.0
shield_advanced_label	cloudposse/label/null	0.25.0
this	cloudposse/label/null	0.25.0
waf_label	cloudposse/label/null	0.25.0
waf_v2_label	cloudposse/label/null	0.25.0

Resources

Name	Type
aws_fms_admin_account.default	resource
aws_fms_policy.dns_firewall	resource
aws_fms_policy.network_firewall	resource
aws_fms_policy.security_groups_common	resource
aws_fms_policy.security_groups_content_audit	resource
aws_fms_policy.security_groups_usage_audit	resource
aws_fms_policy.shield_advanced	resource
aws_fms_policy.waf	resource
aws_fms_policy.waf_v2	resource
aws_iam_role.firehose_role	resource
aws_kinesis_firehose_delivery_stream.firehose_stream	resource
aws_iam_policy_document.assume_role	data source

Inputs

Name	Description	Type	Default	Required
additional_tag_map	Additional key-value pairs to add to each map in `tags_as_list_of_maps`. Not added to `tags` or `id`. This is for some rare cases where resources want additional configuration of tags and therefore take a list of maps with tag key, value, and additional configuration.	`map(string)`	`{}`	no
admin_account_enabled	Resource for aws_fms_admin_account is enabled and will be created or destroyed	`bool`	`true`	no
admin_account_id	The AWS account ID to associate to associate with AWS Firewall Manager as the AWS Firewall Manager administrator account. This can be an AWS Organizations master account or a member account. Defaults to the current account.	`string`	`null`	no
attributes	ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`, in the order they appear in the list. New attributes are appended to the end of the list. The elements of the list are joined by the `delimiter` and treated as a single ID element.	`list(string)`	`[]`	no
context	Single object for setting entire context at once. See description of individual variables for details. Leave string and numeric variables as `null` to use default value. Individual variable settings (non-null) override settings in context object, except for attributes, tags, and additional_tag_map, which are merged.	`any`	{ "additional_tag_map": {}, "attributes": [], "delimiter": null, "descriptor_formats": {}, "enabled": true, "environment": null, "id_length_limit": null, "label_key_case": null, "label_order": [], "label_value_case": null, "labels_as_tags": [ "unset" ], "name": null, "namespace": null, "regex_replace_chars": null, "stage": null, "tags": {}, "tenant": null }	no
delimiter	Delimiter to be used between ID elements. Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.	`string`	`null`	no
descriptor_formats	Describe additional descriptors to be output in the `descriptors` output map. Map of maps. Keys are names of descriptors. Values are maps of the form `{<br/> format = string<br/> labels = list(string)<br/>}` (Type is `any` so the map values can later be enhanced to provide additional options.) `format` is a Terraform format string to be passed to the `format()` function. `labels` is a list of labels, in order, to pass to `format()` function. Label values will be normalized before being passed to `format()` so they will be identical to how they appear in `id`. Default is `{}` (`descriptors` output will be empty).	`any`	`{}`	no
dns_firewall_policies	name: The friendly name of the AWS Firewall Manager Policy. delete_all_policy_resources: Whether to perform a clean-up process. Defaults to `true`. exclude_resource_tags: A boolean value, if `true` the tags that are specified in the `resource_tags` are not protected by this policy. If set to `false` and `resource_tags` are populated, resources that contain tags will be protected by this policy. Defaults to `false`. remediation_enabled: A boolean value, indicates if the policy should automatically applied to resources that already exist in the account. Defaults to `false`. resource_type_list: A list of resource types to protect. Conflicts with `resource_type`. resource_type: A resource type to protect. Conflicts with `resource_type_list`. resource_tags: A map of resource tags, that if present will filter protections on resources based on the `exclude_resource_tags`. exclude_account_ids: A list of AWS Organization member Accounts that you want to exclude from this AWS FMS Policy. include_account_ids: A list of AWS Organization member Accounts that you want to include for this AWS FMS Policy. policy_data: pre_process_rule_groups: A list of maps of pre-proccess rule groups in the format `{ "ruleGroupId": "rslvr-frg-1", "priority": 10 }`. post_process_rule_groups: A list of maps post-proccess rule groups in the format `{ "ruleGroupId": "rslvr-frg-1", "priority": 10 }`.	`list(any)`	`[]`	no
enabled	Set to false to prevent the module from creating any resources	`bool`	`null`	no
environment	ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'	`string`	`null`	no
firehose_arn	Kinesis Firehose ARN used to create a Kinesis Firehose destination for WAF_V2 Rules. Conflicts with `firehose_enabled`	`string`	`null`	no
firehose_enabled	Create a Kinesis Firehose destination for WAF_V2 Rules. Conflicts with `firehose_arn`	`bool`	`false`	no
id_length_limit	Limit `id` to this many characters (minimum 6). Set to `0` for unlimited length. Set to `null` for keep the existing setting, which defaults to `0`. Does not affect `id_full`.	`number`	`null`	no
label_key_case	Controls the letter case of the `tags` keys (label names) for tags generated by this module. Does not affect keys of tags passed in via the `tags` input. Possible values: `lower`, `title`, `upper`. Default value: `title`.	`string`	`null`	no
label_order	The order in which the labels (ID elements) appear in the `id`. Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.	`list(string)`	`null`	no
label_value_case	Controls the letter case of ID elements (labels) as included in `id`, set as tag values, and output by this module individually. Does not affect values of tags passed in via the `tags` input. Possible values: `lower`, `title`, `upper` and `none` (no transformation). Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs. Default value: `lower`.	`string`	`null`	no
labels_as_tags	Set of labels (ID elements) to include as tags in the `tags` output. Default is to include all labels. Tags with empty values will not be included in the `tags` output. Set to `[]` to suppress all generated tags. Notes: The value of the `name` tag, if included, will be the `id`, not the `name`. Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be changed in later chained modules. Attempts to change it will be silently ignored.	`set(string)`	[ "default" ]	no
name	ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'. This is the only ID element not also included as a `tag`. The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input.	`string`	`null`	no
namespace	ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique	`string`	`null`	no
network_firewall_policies	name: The friendly name of the AWS Firewall Manager Policy. delete_all_policy_resources: Whether to perform a clean-up process. Defaults to `true`. exclude_resource_tags: A boolean value, if `true` the tags that are specified in the `resource_tags` are not protected by this policy. If set to `false` and `resource_tags` are populated, resources that contain tags will be protected by this policy. Defaults to `false`. remediation_enabled: A boolean value, indicates if the policy should automatically applied to resources that already exist in the account. Defaults to `false`. resource_type_list: A list of resource types to protect. Conflicts with `resource_type`. resource_type: A resource type to protect. Conflicts with `resource_type_list`. resource_tags: A map of resource tags, that if present will filter protections on resources based on the `exclude_resource_tags`. exclude_account_ids: A list of AWS Organization member Accounts that you want to exclude from this AWS FMS Policy. include_account_ids: A list of AWS Organization member Accounts that you want to include for this AWS FMS Policy. policy_data: stateless_rule_group_references: A list of maps of configuration blocks containing references to the stateful rule groups that are used in the policy. Format: `{ "resourceARN": "arn:aws:network-firewall:us-west-1:1234567891011:stateless-rulegroup/rulegroup2", "priority": 10 }` stateless_default_actions: A list of actions to take on a packet if it does not match any of the stateless rules in the policy. You must specify one of the standard actions including: `aws:drop`, `aws:pass`, or `aws:forward_to_sfe`. In addition, you can specify custom actions that are compatible with your standard action choice. If you want non-matching packets to be forwarded for stateful inspection, specify aws:forward_to_sfe. stateless_fragment_default_actions: A list of actions to take on a fragmented packet if it does not match any of the stateless rules in the policy. You must specify one of the standard actions including: `aws:drop`, `aws:pass`, or `aws:forward_to_sfe`. In addition, you can specify custom actions that are compatible with your standard action choice. If you want non-matching packets to be forwarded for stateful inspection, specify aws:forward_to_sfe. stateless_custom_actions: A list of maps describing the custom action definitions that are available for use in the firewall policy's `stateless_default_actions`. Format: `{ "actionName": "custom1", "actionDefinition": { "publishMetricAction": { "dimensions": [ { "value": "dimension1" } ] } } }` stateful_rule_group_references_arns: A list of ARNs of the stateful rule groups. orchestration_config: single_firewall_endpoint_per_vpc: Whether to use single Firewall Endpoint per VPC. Defaults to `false`. allowed_ipv4_cidrs: A list of allowed ipv4 cidrs.	`list(any)`	`[]`	no
regex_replace_chars	Terraform regular expression (regex) string. Characters matching the regex will be removed from the ID elements. If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits.	`string`	`null`	no
security_groups_common_policies	name: The friendly name of the AWS Firewall Manager Policy. delete_all_policy_resources: Whether to perform a clean-up process. Defaults to `true`. exclude_resource_tags: A boolean value, if `true` the tags that are specified in the `resource_tags` are not protected by this policy. If set to `false` and `resource_tags` are populated, resources that contain tags will be protected by this policy. Defaults to `false`. remediation_enabled: A boolean value, indicates if the policy should automatically applied to resources that already exist in the account. Defaults to `false`. resource_type_list: A list of resource types to protect. Conflicts with `resource_type`. resource_type: A resource type to protect. Conflicts with `resource_type_list`. resource_tags: A map of resource tags, that if present will filter protections on resources based on the `exclude_resource_tags`. exclude_account_ids: A list of AWS Organization member Accounts that you want to exclude from this AWS FMS Policy. include_account_ids: A list of AWS Organization member Accounts that you want to include for this AWS FMS Policy. policy_data: revert_manual_security_group_changes: Whether to revert manual Security Group changes. Defaults to `false`. exclusive_resource_security_group_management: Wheter to exclusive resource Security Group management. Defaults to `false`. apply_to_all_ec2_instance_enis: Whether to apply to all EC2 instance ENIs. Defaults to `false`. security_groups: A list of Security Group IDs.	`list(any)`	`[]`	no
security_groups_content_audit_policies	name: The friendly name of the AWS Firewall Manager Policy. delete_all_policy_resources: Whether to perform a clean-up process. Defaults to `true`. exclude_resource_tags: A boolean value, if `true` the tags that are specified in the `resource_tags` are not protected by this policy. If set to `false` and `resource_tags` are populated, resources that contain tags will be protected by this policy. Defaults to `false`. remediation_enabled: A boolean value, indicates if the policy should automatically applied to resources that already exist in the account. Defaults to `false`. resource_type_list: A list of resource types to protect. Conflicts with `resource_type`. resource_type: A resource type to protect. Conflicts with `resource_type_list`. resource_tags: A map of resource tags, that if present will filter protections on resources based on the `exclude_resource_tags`. exclude_account_ids: A list of AWS Organization member Accounts that you want to exclude from this AWS FMS Policy. include_account_ids: A list of AWS Organization member Accounts that you want to include for this AWS FMS Policy. policy_data: security_group_action: For `ALLOW`, all in-scope security group rules must be within the allowed range of the policy's security group rules. For `DENY`, all in-scope security group rules must not contain a value or a range that matches a rule value or range in the policy security group. Possible values: `ALLOW`, `DENY`. security_groups: A list of Security Group IDs.	`list(any)`	`[]`	no
security_groups_usage_audit_policies	name: The friendly name of the AWS Firewall Manager Policy. delete_all_policy_resources: Whether to perform a clean-up process. Defaults to `true`. exclude_resource_tags: A boolean value, if `true` the tags that are specified in the `resource_tags` are not protected by this policy. If set to `false` and `resource_tags` are populated, resources that contain tags will be protected by this policy. Defaults to `false`. remediation_enabled: A boolean value, indicates if the policy should automatically applied to resources that already exist in the account. Defaults to `false`. resource_type_list: A list of resource types to protect. Conflicts with `resource_type`. resource_type: A resource type to protect. Conflicts with `resource_type_list`. resource_tags: A map of resource tags, that if present will filter protections on resources based on the `exclude_resource_tags`. exclude_account_ids: A list of AWS Organization member Accounts that you want to exclude from this AWS FMS Policy. include_account_ids: A list of AWS Organization member Accounts that you want to include for this AWS FMS Policy. policy_data: delete_unused_security_groups: Whether to delete unused Security Groups. Defaults to `false`. coalesce_redundant_security_groups: Whether to coalesce redundant Security Groups. Defaults to `false`.	`list(any)`	n/a	yes
shield_advanced_policies	name: The friendly name of the AWS Firewall Manager Policy. delete_all_policy_resources: Whether to perform a clean-up process. Defaults to `true`. delete_unused_fm_managed_resources: If true, Firewall Manager will automatically remove protections from resources that leave the policy scope. Defaults to `false`. exclude_resource_tags: A boolean value, if `true` the tags that are specified in the `resource_tags` are not protected by this policy. If set to `false` and `resource_tags` are populated, resources that contain tags will be protected by this policy. Defaults to `false`. remediation_enabled: A boolean value, indicates if the policy should automatically applied to resources that already exist in the account. Defaults to `false`. resource_type_list: A list of resource types to protect. Conflicts with `resource_type`. resource_type: A resource type to protect. Conflicts with `resource_type_list`. resource_tags: A map of resource tags, that if present will filter protections on resources based on the `exclude_resource_tags`. exclude_account_ids: A list of AWS Organization member Accounts that you want to exclude from this AWS FMS Policy. include_account_ids: A list of AWS Organization member Accounts that you want to include for this AWS FMS Policy. policy_data: automatic_response_status: Status of shield automatic response. Possible values: ENABLED\|IGNORED\|DISABLED. Default is IGNORED. automatic_response_action: The automatic response action. Possible values: BLOCK\|COUNT. Default is null. override_customer_webacl_classic: Whether to replace AWS WAF Classic web ACLs with this policy's AWS WAF v2 web ACLs where possible. Possible values: true\|false Default is false.	`list(any)`	`[]`	no
stage	ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'	`string`	`null`	no
tags	Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`). Neither the tag keys nor the tag values will be modified by this module.	`map(string)`	`{}`	no
tenant	ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for	`string`	`null`	no
waf_policies	name: The friendly name of the AWS Firewall Manager Policy. delete_all_policy_resources: Whether to perform a clean-up process. Defaults to `true`. exclude_resource_tags: A boolean value, if `true` the tags that are specified in the `resource_tags` are not protected by this policy. If set to `false` and `resource_tags` are populated, resources that contain tags will be protected by this policy. Defaults to `false`. remediation_enabled: A boolean value, indicates if the policy should automatically applied to resources that already exist in the account. Defaults to `false`. resource_type_list: A list of resource types to protect. Conflicts with `resource_type`. resource_type: A resource type to protect. Conflicts with `resource_type_list`. resource_tags: A map of resource tags, that if present will filter protections on resources based on the `exclude_resource_tags`. exclude_account_ids: A list of AWS Organization member Accounts that you want to exclude from this AWS FMS Policy. include_account_ids: A list of AWS Organization member Accounts that you want to include for this AWS FMS Policy. policy_data: default_action: The action that you want AWS WAF to take. Possible values: `ALLOW`, `BLOCK` or `COUNT`. rule_groups: A list of rule groups.	`list(any)`	`[]`	no
waf_v2_policies	name: The friendly name of the AWS Firewall Manager Policy. delete_all_policy_resources: Whether to perform a clean-up process. Defaults to `true`. exclude_resource_tags: A boolean value, if `true` the tags that are specified in the `resource_tags` are not protected by this policy. If set to `false` and `resource_tags` are populated, resources that contain tags will be protected by this policy. Defaults to `false`. remediation_enabled: A boolean value, indicates if the policy should automatically applied to resources that already exist in the account. Defaults to `false`. resource_type_list: A list of resource types to protect. Conflicts with `resource_type`. resource_type: A resource type to protect. Conflicts with `resource_type_list`. resource_tags: A map of resource tags, that if present will filter protections on resources based on the `exclude_resource_tags`. exclude_account_ids: A list of AWS Organization member Accounts that you want to exclude from this AWS FMS Policy. include_account_ids: A list of AWS Organization member Accounts that you want to include for this AWS FMS Policy. policy_data: default_action: The action that you want AWS WAF to take. Possible values: `ALLOW`, `BLOCK` or `COUNT`. override_customer_web_acl_association: Wheter to override customer Web ACL association logging_configuration: The WAFv2 Web ACL logging configuration. pre_process_rule_groups: A list of pre-proccess rule groups. post_process_rule_groups: A list of post-proccess rule groups. custom_request_handling: A custom header for custom request and response handling. Defaults to null. custom_response: A custom response for the web request. Defaults to null. sampled_requests_enabled_for_default_actions: Whether WAF should store a sampling of the web requests that match the rules. Possible values: `true` or `false`.	`list(any)`	`[]`	no

Outputs

Name	Description
admin_account	AWS Account ID of the designated admin account.

Related Projects

Check out these related projects.

terraform-null-label - Terraform module designed to generate consistent names and tags for resources. Use terraform-null-label to implement a strict naming convention.

References

For additional context, refer to some of these links.

Terraform Standard Module Structure - HashiCorp's standard module structure is a file and directory layout we recommend for reusable modules distributed in separate repositories.
Terraform Module Requirements - HashiCorp's guidance on all the requirements for publishing a module. Meeting the requirements for publishing a module is extremely easy.
Terraform random_integer Resource - The resource random_integer generates random values from a given range, described by the min and max attributes of a given resource.
Terraform Version Pinning - The required_version setting can be used to constrain which versions of the Terraform CLI can be used with your configuration

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Name		Name	Last commit message	Last commit date
Latest commit History 44 Commits
.github		.github
docs		docs
examples/complete		examples/complete
test		test
.editorconfig		.editorconfig
.gitignore		.gitignore
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
README.yaml		README.yaml
context.tf		context.tf
dns_firewall.tf		dns_firewall.tf
firehose.tf		firehose.tf
main.tf		main.tf
network_firewall.tf		network_firewall.tf
outputs.tf		outputs.tf
security_groups_common.tf		security_groups_common.tf
security_groups_content_audit.tf		security_groups_content_audit.tf
security_groups_usage_audit.tf		security_groups_usage_audit.tf
shield_advanced.tf		shield_advanced.tf
variables.tf		variables.tf
versions.tf		versions.tf
waf.tf		waf.tf
waf_v2.tf		waf_v2.tf

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