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https://github.com/nozaq/terraform-aws-secure-baseline

Terraform module to set up your AWS account with the secure baseline configuration based on CIS Amazon Web Services Foundations and AWS Foundational Security Best Practices.
https://github.com/nozaq/terraform-aws-secure-baseline
aws aws-auditing cis-benchmark devops hardening security security-hardening security-tools terraform terraform-module terraform-modules
Last synced: about 8 hours ago
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Terraform module to set up your AWS account with the secure baseline configuration based on CIS Amazon Web Services Foundations and AWS Foundational Security Best Practices.
Host: GitHub
URL: https://github.com/nozaq/terraform-aws-secure-baseline
Owner: nozaq
License: mit
Created: 2018-02-12T06:03:00.000Z (almost 7 years ago)
Default Branch: main
Last Pushed: 2024-07-09T12:20:18.000Z (5 months ago)
Last Synced: 2024-11-27T21:09:57.582Z (14 days ago)
Topics: aws, aws-auditing, cis-benchmark, devops, hardening, security, security-hardening, security-tools, terraform, terraform-module, terraform-modules
Language: HCL
Homepage:
Size: 705 KB
Stars: 1,144
Watchers: 34
Forks: 372
Open Issues: 30
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE
- Security: securityhub_baselines.tf
Awesome Lists containing this project

awesome-terraform - terraform-aws-secure-baseline - Set up your AWS account with the secure baseline configuration based on CIS Amazon Web Services Foundations. (Community Modules / Miscellaneous)
awesome-systools - terraform-aws-secure-baseline
awesome-hacking-lists - nozaq/terraform-aws-secure-baseline - Terraform module to set up your AWS account with the secure baseline configuration based on CIS Amazon Web Services Foundations and AWS Foundational Security Best Practices. (HCL)
awesome-tf - terraform-aws-secure-baseline - Set up your AWS account with the secure baseline configuration based on CIS Amazon Web Services Foundations. (Community Modules / Miscellaneous)
README

        # terraform-aws-secure-baseline

[![Github Actions](https://github.com/nozaq/terraform-aws-secure-baseline/actions/workflows/main.yml/badge.svg)](https://github.com/nozaq/terraform-aws-secure-baseline/actions/workflows/main.yml)

[![Releases](https://img.shields.io/github/v/release/nozaq/terraform-aws-secure-baseline)](https://github.com/nozaq/terraform-aws-secure-baseline/releases/latest)

[Terraform Module Registry](https://registry.terraform.io/modules/nozaq/secure-baseline/aws)

A terraform module to set up your AWS account with the reasonably secure configuration baseline.

Most configurations are based on [CIS Amazon Web Services Foundations v1.4.0] and [AWS Foundational Security Best Practices v1.0.0].

See [Benchmark Compliance](./compliance.md) to check which items in various benchmarks are covered.

## Features

### Identity and Access Management

- Set up IAM Password Policy.

- Create an IAM role for contacting AWS support for incident handling.

- Enable AWS Config rules to audit root account status.

- Enable IAM Access Analyzer in each region.

- Enable S3 account-level Public Access Block configuration.

### Logging & Monitoring

- Enable CloudTrail in all regions and deliver events to CloudWatch Logs.

- Object-level logging for all S3 buckets is enabled by default.

- CloudTrail Insights event logging is enabled by default.

- CloudTrail logs are encrypted using AWS Key Management Service.

- All logs are stored in the S3 bucket with access logging enabled.

- Logs are automatically archived into Amazon Glacier after the given period(defaults to 90 days).

- Set up CloudWatch alarms to notify you when critical changes happen in your AWS account.

- Enable AWS Config in each regions to automatically take configuration snapshots.

- Enable SecurityHub and subscribe available standards.

- Enable GuardDuty in each regions.

### Networking & Computing

- Remove all rules associated with default route tables, default network ACLs and default security groups in the default VPC in all regions.

- Disable automatic public IP assignments in default subnets.

- Enable AWS Config rules to audit unrestricted common ports in Security Group rules.

- Enable VPC Flow Logs with the default VPC in all regions.

- Enable default EBS encryption for newly created volumes.

## Usage

```hcl

data "aws_caller_identity" "current" {}

data "aws_region" "current" {}

module "secure_baseline" {

  source = "nozaq/secure-baseline/aws"

  audit_log_bucket_name           = "YOUR_BUCKET_NAME"

  aws_account_id                  = data.aws_caller_identity.current.account_id

  region                          = data.aws_region.current.name

  support_iam_role_principal_arns = ["YOUR_IAM_USER"]

  providers = {

    aws                = aws

    aws.ap-northeast-1 = aws.ap-northeast-1

    aws.ap-northeast-2 = aws.ap-northeast-2

    aws.ap-northeast-3 = aws.ap-northeast-3

    aws.ap-south-1     = aws.ap-south-1

    aws.ap-southeast-1 = aws.ap-southeast-1

    aws.ap-southeast-2 = aws.ap-southeast-2

    aws.ca-central-1   = aws.ca-central-1

    aws.eu-central-1   = aws.eu-central-1

    aws.eu-north-1     = aws.eu-north-1

    aws.eu-west-1      = aws.eu-west-1

    aws.eu-west-2      = aws.eu-west-2

    aws.eu-west-3      = aws.eu-west-3

    aws.sa-east-1      = aws.sa-east-1

    aws.us-east-1      = aws.us-east-1

    aws.us-east-2      = aws.us-east-2

    aws.us-west-1      = aws.us-west-1

    aws.us-west-2      = aws.us-west-2

  }

}

```

Check [the example](./examples/simple/regions.tf) to understand how these providers are defined.

Note that you need to define a provider for each AWS region and pass them to the module. Currently this is the recommended way to handle multiple regions in one module.

Detailed information can be found at [Providers within Modules - Terraform Docs].

A new S3 bucket to store audit logs is automatically created by default, while the external S3 bucket can be specified. It is useful when you already have a centralized S3 bucket to store all logs. Please see [external-bucket](./examples/external-bucket) example for more detail.

### Managing multiple accounts in AWS Organization

When you have multiple AWS accounts in your AWS Organization, `secure-baseline` module configures the separated environment for each AWS account. You can change this behavior to centrally manage security information and audit logs from all accounts in one master account.

Check [organization](./examples/organization) example for more detail.

## Submodules

This module is composed of several submodules and each of which can be used independently.

[Modules in Package Sub-directories - Terraform] describes how to source a submodule.

- [alarm-baseline](./modules/alarm-baseline)

- [analyzer-baseline](./modules/analyzer-baseline)

- [cloudtrail-baseline](./modules/cloudtrail-baseline)

- [config-baseline](./modules/config-baseline)

- [ebs-baseline](./modules/ebs-baseline)

- [guardduty-baseline](./modules/guardduty-baseline)

- [iam-baseline](./modules/iam-baseline)

- [s3-baseline](./modules/s3-baseline)

- [secure-bucket](./modules/secure-bucket)

- [securityhub-baseline](./modules/securityhub-baseline)

- [vpc-baseline](./modules/vpc-baseline)

## Compatibility

- Starting from v1.0, this module requires [Terraform Provider for AWS](https://github.com/terraform-providers/terraform-provider-aws) v4.0 or later. [Version 1.0 Upgrade Guide](./docs/upgrade-1.0.md) described the recommended procedure after the upgrade.

- Starting from v0.20, this module requires [Terraform Provider for AWS](https://github.com/terraform-providers/terraform-provider-aws) v3.0 or later. Please use v0.19 if you need to use v2.x or earlier.

- Starting from v0.10, this module requires Terraform v0.12 or later. Please use v0.9 if you need to use Terraform v0.11 or ealier.

## Requirements

| Name | Version |

|------|---------|

|  [terraform](#requirement\_terraform) | >= 1.1.4 |

|  [aws](#requirement\_aws) | >= 4.3 |

## Providers

| Name | Version |

|------|---------|

|  [aws](#provider\_aws) | >= 4.3 |

## Inputs

| Name | Description | Type | Required |

|------|-------------|------|:--------:|

|  [audit\_log\_bucket\_name](#input\_audit\_log\_bucket\_name) | The name of the S3 bucket to store various audit logs. | `string` | yes |

|  [aws\_account\_id](#input\_aws\_account\_id) | The AWS Account ID number of the account. | `string` | yes |

|  [region](#input\_region) | The AWS region in which global resources are set up. | `string` | yes |

|  [support\_iam\_role\_principal\_arns](#input\_support\_iam\_role\_principal\_arns) | List of ARNs of the IAM principal elements by which the support role could be assumed. | `list(string)` | yes |

|  [account\_type](#input\_account\_type) | The type of the AWS account. The possible values are `individual`, `master` and `member` . Specify `master` and `member` to set up centalized logging for multiple accounts in AWS Organization. Use individual` otherwise.` | `string` | no |

|  [alarm\_baseline\_enabled](#input\_alarm\_baseline\_enabled) | Boolean whether alarm-baseline is enabled. | `bool` | no |

|  [alarm\_namespace](#input\_alarm\_namespace) | The namespace in which all alarms are set up. | `string` | no |

|  [alarm\_sns\_topic\_kms\_master\_key\_id](#input\_alarm\_sns\_topic\_kms\_master\_key\_id) | To enable SNS Topic encryption enter value with the ID of a custom master KMS key that is used for encryption | `string` | no |

|  [alarm\_sns\_topic\_name](#input\_alarm\_sns\_topic\_name) | The name of the SNS Topic which will be notified when any alarm is performed. | `string` | no |

|  [allow\_users\_to\_change\_password](#input\_allow\_users\_to\_change\_password) | Whether to allow users to change their own password. | `bool` | no |

|  [analyzer\_baseline\_enabled](#input\_analyzer\_baseline\_enabled) | Boolean whether analyzer-baseline is enabled. | `bool` | no |

|  [analyzer\_name](#input\_analyzer\_name) | The name for the IAM Access Analyzer resource to be created. | `string` | no |

|  [audit\_log\_bucket\_access\_logs\_name](#input\_audit\_log\_bucket\_access\_logs\_name) | The name of the S3 bucket to store various audit logs. | `string` | no |

|  [audit\_log\_bucket\_custom\_policy\_json](#input\_audit\_log\_bucket\_custom\_policy\_json) | Override policy for the audit log bucket. Allows addition of extra policies. | `string` | no |

|  [audit\_log\_bucket\_force\_destroy](#input\_audit\_log\_bucket\_force\_destroy) | A boolean that indicates all objects should be deleted from the audit log bucket so that the bucket can be destroyed without error. These objects are not recoverable. | `bool` | no |

|  [audit\_log\_bucket\_key\_enabled](#input\_audit\_log\_bucket\_key\_enabled) | Whether or not to use Amazon S3 Bucket Keys for encrypting the audit log bucket. | `bool` | no |

|  [audit\_log\_lifecycle\_glacier\_transition\_days](#input\_audit\_log\_lifecycle\_glacier\_transition\_days) | The number of days after log creation when the log file is archived into Glacier. Setting to zero disables the transition. | `number` | no |

|  [aws\_config\_changes\_enabled](#input\_aws\_config\_changes\_enabled) | The boolean flag whether the aws\_config\_changes alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [cloudtrail\_baseline\_enabled](#input\_cloudtrail\_baseline\_enabled) | Boolean whether cloudtrail-baseline is enabled. | `bool` | no |

|  [cloudtrail\_cfg\_changes\_enabled](#input\_cloudtrail\_cfg\_changes\_enabled) | The boolean flag whether the cloudtrail\_cfg\_changes alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [cloudtrail\_cloudwatch\_logs\_enabled](#input\_cloudtrail\_cloudwatch\_logs\_enabled) | Specifies whether the trail is delivered to CloudWatch Logs. | `bool` | no |

|  [cloudtrail\_cloudwatch\_logs\_group\_name](#input\_cloudtrail\_cloudwatch\_logs\_group\_name) | The name of CloudWatch Logs group to which CloudTrail events are delivered. | `string` | no |

|  [cloudtrail\_dynamodb\_event\_logging\_tables](#input\_cloudtrail\_dynamodb\_event\_logging\_tables) | The list of DynamoDB table ARNs on which to enable event logging. | `list(string)` | no |

|  [cloudtrail\_iam\_role\_name](#input\_cloudtrail\_iam\_role\_name) | The name of the IAM Role to be used by CloudTrail to delivery logs to CloudWatch Logs group. | `string` | no |

|  [cloudtrail\_iam\_role\_policy\_name](#input\_cloudtrail\_iam\_role\_policy\_name) | The name of the IAM Role Policy to be used by CloudTrail to delivery logs to CloudWatch Logs group. | `string` | no |

|  [cloudtrail\_key\_deletion\_window\_in\_days](#input\_cloudtrail\_key\_deletion\_window\_in\_days) | Duration in days after which the key is deleted after destruction of the resource, must be between 7 and 30 days. Defaults to 30 days. | `number` | no |

|  [cloudtrail\_lambda\_invocation\_logging\_lambdas](#input\_cloudtrail\_lambda\_invocation\_logging\_lambdas) | The list of lambda ARNs on which to enable invocation logging. | `list(string)` | no |

|  [cloudtrail\_name](#input\_cloudtrail\_name) | The name of the trail. | `string` | no |

|  [cloudtrail\_s3\_key\_prefix](#input\_cloudtrail\_s3\_key\_prefix) | The prefix used when CloudTrail delivers events to the S3 bucket. | `string` | no |

|  [cloudtrail\_s3\_object\_level\_logging\_buckets](#input\_cloudtrail\_s3\_object\_level\_logging\_buckets) | The list of S3 bucket ARNs on which to enable object-level logging. | `list(string)` | no |

|  [cloudtrail\_sns\_topic\_enabled](#input\_cloudtrail\_sns\_topic\_enabled) | Specifies whether the trail is delivered to a SNS topic. | `bool` | no |

|  [cloudtrail\_sns\_topic\_name](#input\_cloudtrail\_sns\_topic\_name) | The name of the SNS topic to link to the trail. | `string` | no |

|  [cloudwatch\_logs\_retention\_in\_days](#input\_cloudwatch\_logs\_retention\_in\_days) | Number of days to retain logs for. CIS recommends 365 days.  Possible values are: 0, 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, and 3653. Set to 0 to keep logs indefinitely. | `number` | no |

|  [config\_aggregator\_name](#input\_config\_aggregator\_name) | The name of the organizational AWS Config Configuration Aggregator. | `string` | no |

|  [config\_aggregator\_name\_prefix](#input\_config\_aggregator\_name\_prefix) | The prefix of the name for the IAM role attached to the organizational AWS Config Configuration Aggregator. | `string` | no |

|  [config\_baseline\_enabled](#input\_config\_baseline\_enabled) | Boolean whether config-baseline is enabled. | `bool` | no |

|  [config\_delivery\_frequency](#input\_config\_delivery\_frequency) | The frequency which AWS Config sends a snapshot into the S3 bucket. | `string` | no |

|  [config\_global\_resources\_all\_regions](#input\_config\_global\_resources\_all\_regions) | Record global resources in all regions. If false, only default region will record global resources. | `bool` | no |

|  [config\_iam\_role\_name](#input\_config\_iam\_role\_name) | The name of the IAM Role which AWS Config will use. | `string` | no |

|  [config\_iam\_role\_policy\_name](#input\_config\_iam\_role\_policy\_name) | The name of the IAM Role Policy which AWS Config will use. | `string` | no |

|  [config\_s3\_bucket\_key\_prefix](#input\_config\_s3\_bucket\_key\_prefix) | The prefix used when writing AWS Config snapshots into the S3 bucket. | `string` | no |

|  [config\_sns\_topic\_kms\_master\_key\_id](#input\_config\_sns\_topic\_kms\_master\_key\_id) | To enable SNS Topic encryption enter value with the ID of a custom master KMS key that is used for encryption | `string` | no |

|  [config\_sns\_topic\_name](#input\_config\_sns\_topic\_name) | The name of the SNS Topic to be used to notify configuration changes. | `string` | no |

|  [console\_signin\_failures\_enabled](#input\_console\_signin\_failures\_enabled) | The boolean flag whether the console\_signin\_failures alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [create\_password\_policy](#input\_create\_password\_policy) | Define if the password policy should be created. | `bool` | no |

|  [create\_support\_role](#input\_create\_support\_role) | Define if the support role should be created. | `bool` | no |

|  [disable\_or\_delete\_cmk\_enabled](#input\_disable\_or\_delete\_cmk\_enabled) | The boolean flag whether the disable\_or\_delete\_cmk alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [guardduty\_disable\_email\_notification](#input\_guardduty\_disable\_email\_notification) | Boolean whether an email notification is sent to the accounts. | `bool` | no |

|  [guardduty\_enabled](#input\_guardduty\_enabled) | Boolean whether the guardduty-baseline module is enabled or disabled | `bool` | no |

|  [guardduty\_finding\_publishing\_frequency](#input\_guardduty\_finding\_publishing\_frequency) | Specifies the frequency of notifications sent for subsequent finding occurrences. | `string` | no |

|  [guardduty\_invitation\_message](#input\_guardduty\_invitation\_message) | Message for invitation. | `string` | no |

|  [iam\_baseline\_enabled](#input\_iam\_baseline\_enabled) | Boolean whether iam-baseline is enabled. | `bool` | no |

|  [iam\_changes\_enabled](#input\_iam\_changes\_enabled) | The boolean flag whether the iam\_changes alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [master\_account\_id](#input\_master\_account\_id) | The ID of the master AWS account to which the current AWS account is associated. Required if `account_type` is `member`. | `string` | no |

|  [max\_password\_age](#input\_max\_password\_age) | The number of days that an user password is valid. | `number` | no |

|  [member\_accounts](#input\_member\_accounts) | A list of IDs and emails of AWS accounts which associated as member accounts. | 
list(object({
    account_id = string
    email      = string
  })) | no |

|  [mfa\_console\_signin\_allow\_sso](#input\_mfa\_console\_signin\_allow\_sso) | The boolean flag whether the no\_mfa\_console\_signin alarm allows SSO auth to be ignored. | `bool` | no |

|  [minimum\_password\_length](#input\_minimum\_password\_length) | Minimum length to require for user passwords. | `number` | no |

|  [nacl\_changes\_enabled](#input\_nacl\_changes\_enabled) | The boolean flag whether the nacl\_changes alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [network\_gw\_changes\_enabled](#input\_network\_gw\_changes\_enabled) | The boolean flag whether the network\_gw\_changes alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [no\_mfa\_console\_signin\_enabled](#input\_no\_mfa\_console\_signin\_enabled) | The boolean flag whether the no\_mfa\_console\_signin alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [organizations\_changes\_enabled](#input\_organizations\_changes\_enabled) | The boolean flag whether the organizations\_changes alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [password\_reuse\_prevention](#input\_password\_reuse\_prevention) | The number of previous passwords that users are prevented from reusing. | `number` | no |

|  [permissions\_boundary\_arn](#input\_permissions\_boundary\_arn) | The permissions boundary ARN for all IAM Roles, provisioned by this module | `string` | no |

|  [require\_lowercase\_characters](#input\_require\_lowercase\_characters) | Whether to require lowercase characters for user passwords. | `bool` | no |

|  [require\_numbers](#input\_require\_numbers) | Whether to require numbers for user passwords. | `bool` | no |

|  [require\_symbols](#input\_require\_symbols) | Whether to require symbols for user passwords. | `bool` | no |

|  [require\_uppercase\_characters](#input\_require\_uppercase\_characters) | Whether to require uppercase characters for user passwords. | `bool` | no |

|  [root\_usage\_enabled](#input\_root\_usage\_enabled) | The boolean flag whether the root\_usage alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [route\_table\_changes\_enabled](#input\_route\_table\_changes\_enabled) | The boolean flag whether the route\_table\_changes alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [s3\_baseline\_enabled](#input\_s3\_baseline\_enabled) | Boolean whether s3-baseline is enabled. | `bool` | no |

|  [s3\_block\_public\_acls](#input\_s3\_block\_public\_acls) | Whether Amazon S3 should block public ACLs for buckets in this account. Defaults to true. | `bool` | no |

|  [s3\_block\_public\_policy](#input\_s3\_block\_public\_policy) | Whether Amazon S3 should block public bucket policies for buckets in this account. Defaults to true. | `bool` | no |

|  [s3\_bucket\_policy\_changes\_enabled](#input\_s3\_bucket\_policy\_changes\_enabled) | The boolean flag whether the s3\_bucket\_policy\_changes alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [s3\_ignore\_public\_acls](#input\_s3\_ignore\_public\_acls) | Whether Amazon S3 should ignore public ACLs for buckets in this account. Defaults to true. | `bool` | no |

|  [s3\_restrict\_public\_buckets](#input\_s3\_restrict\_public\_buckets) | Whether Amazon S3 should restrict public bucket policies for buckets in this account. Defaults to true. | `bool` | no |

|  [security\_group\_changes\_enabled](#input\_security\_group\_changes\_enabled) | The boolean flag whether the security\_group\_changes alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [securityhub\_enable\_aws\_foundational\_standard](#input\_securityhub\_enable\_aws\_foundational\_standard) | Boolean whether AWS Foundations standard is enabled. | `bool` | no |

|  [securityhub\_enable\_cis\_standard](#input\_securityhub\_enable\_cis\_standard) | Boolean whether CIS standard is enabled. | `bool` | no |

|  [securityhub\_enable\_pci\_dss\_standard](#input\_securityhub\_enable\_pci\_dss\_standard) | Boolean whether PCI DSS standard is enabled. | `bool` | no |

|  [securityhub\_enable\_product\_arns](#input\_securityhub\_enable\_product\_arns) | List of Security Hub product ARNs, `` will be replaced. See https://docs.aws.amazon.com/securityhub/latest/userguide/securityhub-partner-providers.html for list. | `list(string)` | no |

|  [securityhub\_enabled](#input\_securityhub\_enabled) | Boolean whether the securityhub-baseline module is enabled or disabled | `bool` | no |

|  [support\_iam\_role\_name](#input\_support\_iam\_role\_name) | The name of the the support role. | `string` | no |

|  [tags](#input\_tags) | Specifies object tags key and value. This applies to all resources created by this module. | `map(string)` | no |

|  [target\_regions](#input\_target\_regions) | A list of regions to set up with this module. | `list(string)` | no |

|  [turn\_off\_organization\_trail](#input\_turn\_off\_organization\_trail) | Specifies whether the disable the organization trail. Organization trails log events for the master account and all member accounts. Can only be created in the organization master account. | `bool` | no |

|  [unauthorized\_api\_calls\_enabled](#input\_unauthorized\_api\_calls\_enabled) | The boolean flag whether the unauthorized\_api\_calls alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [use\_external\_audit\_log\_bucket](#input\_use\_external\_audit\_log\_bucket) | A boolean that indicates whether the specific audit log bucket already exists. Create a new S3 bucket if it is set to false. | `bool` | no |

|  [vpc\_changes\_enabled](#input\_vpc\_changes\_enabled) | The boolean flag whether the vpc\_changes alarm is enabled or not. No resources are created when set to false. | `bool` | no |

|  [vpc\_enable](#input\_vpc\_enable) | Boolean whether the VPC baseline module should be enabled | `bool` | no |

|  [vpc\_enable\_flow\_logs](#input\_vpc\_enable\_flow\_logs) | The boolean flag whether to enable VPC Flow Logs in default VPCs | `bool` | no |

|  [vpc\_flow\_logs\_destination\_type](#input\_vpc\_flow\_logs\_destination\_type) | The type of the logging destination. Valid values: cloud-watch-logs, s3 | `string` | no |

|  [vpc\_flow\_logs\_log\_group\_name](#input\_vpc\_flow\_logs\_log\_group\_name) | The name of CloudWatch Logs group to which VPC Flow Logs are delivered. | `string` | no |

|  [vpc\_flow\_logs\_retention\_in\_days](#input\_vpc\_flow\_logs\_retention\_in\_days) | Number of days to retain logs if vpc\_log\_destination\_type is cloud-watch-logs. CIS recommends 365 days. Possible values are: 0, 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, and 3653. Set to 0 to keep logs indefinitely. | `number` | no |

|  [vpc\_flow\_logs\_s3\_arn](#input\_vpc\_flow\_logs\_s3\_arn) | ARN of the S3 bucket to which VPC Flow Logs are delivered if vpc\_log\_destination\_type is s3. | `string` | no |

|  [vpc\_flow\_logs\_s3\_key\_prefix](#input\_vpc\_flow\_logs\_s3\_key\_prefix) | The prefix used when VPC Flow Logs delivers logs to the S3 bucket. | `string` | no |

|  [vpc\_iam\_role\_name](#input\_vpc\_iam\_role\_name) | The name of the IAM Role which VPC Flow Logs will use. | `string` | no |

|  [vpc\_iam\_role\_policy\_name](#input\_vpc\_iam\_role\_policy\_name) | The name of the IAM Role Policy which VPC Flow Logs will use. | `string` | no |

## Outputs

| Name | Description |

|------|-------------|

|  [alarm\_sns\_topic](#output\_alarm\_sns\_topic) | The SNS topic to which CloudWatch Alarms will be sent. |

|  [audit\_bucket](#output\_audit\_bucket) | The S3 bucket used for storing audit logs. |

|  [cloudtrail](#output\_cloudtrail) | The trail for recording events in all regions. |

|  [cloudtrail\_kms\_key](#output\_cloudtrail\_kms\_key) | The KMS key used for encrypting CloudTrail events. |

|  [cloudtrail\_log\_delivery\_iam\_role](#output\_cloudtrail\_log\_delivery\_iam\_role) | The IAM role used for delivering CloudTrail events to CloudWatch Logs. |

|  [cloudtrail\_log\_group](#output\_cloudtrail\_log\_group) | The CloudWatch Logs log group which stores CloudTrail events. |

|  [cloudtrail\_sns\_topic](#output\_cloudtrail\_sns\_topic) | The sns topic linked to the cloudtrail. |

|  [config\_configuration\_recorder](#output\_config\_configuration\_recorder) | The configuration recorder in each region. |

|  [config\_iam\_role](#output\_config\_iam\_role) | The IAM role used for delivering AWS Config records to CloudWatch Logs. |

|  [config\_sns\_topic](#output\_config\_sns\_topic) | The SNS topic) that AWS Config delivers notifications to. |

|  [default\_network\_acl](#output\_default\_network\_acl) | The default network ACL. |

|  [default\_route\_table](#output\_default\_route\_table) | The default route table. |

|  [default\_security\_group](#output\_default\_security\_group) | The ID of the default security group. |

|  [default\_vpc](#output\_default\_vpc) | The default VPC. |

|  [guardduty\_detector](#output\_guardduty\_detector) | The GuardDuty detector in each region. |

|  [support\_iam\_role](#output\_support\_iam\_role) | The IAM role used for the support user. |

|  [vpc\_flow\_logs\_group](#output\_vpc\_flow\_logs\_group) | The CloudWatch Logs log group which stores VPC Flow Logs in each region. |

|  [vpc\_flow\_logs\_iam\_role](#output\_vpc\_flow\_logs\_iam\_role) | The IAM role used for delivering VPC Flow Logs to CloudWatch Logs. |

[cis amazon web services foundations v1.4.0]: https://www.cisecurity.org/benchmark/amazon_web_services/

[aws foundational security best practices v1.0.0]: https://docs.aws.amazon.com/securityhub/latest/userguide/securityhub-standards-fsbp.html

[providers within modules - terraform docs]: https://www.terraform.io/docs/modules/usage.html#providers-within-modules

[modules in package sub-directories - terraform]: https://www.terraform.io/docs/modules/sources.html#modules-in-package-sub-directories