https://github.com/cloudposse/terraform-aws-ec2-client-vpn
https://github.com/cloudposse/terraform-aws-ec2-client-vpn
Last synced: over 1 year ago
JSON representation
- Host: GitHub
- URL: https://github.com/cloudposse/terraform-aws-ec2-client-vpn
- Owner: cloudposse
- License: apache-2.0
- Created: 2021-09-04T02:33:01.000Z (almost 5 years ago)
- Default Branch: main
- Last Pushed: 2025-01-01T03:14:29.000Z (over 1 year ago)
- Last Synced: 2025-01-10T16:27:29.761Z (over 1 year ago)
- Language: HCL
- Homepage: https://cloudposse.com/accelerate
- Size: 3.77 MB
- Stars: 46
- Watchers: 14
- Forks: 31
- Open Issues: 19
-
Metadata Files:
- Readme: README.md
- License: LICENSE
- Codeowners: .github/CODEOWNERS
- Security: security_group_inputs.tf
Awesome Lists containing this project
README
The `terraform-aws-ec2-client-vpn` project provides for ec2 client vpn infrastructure. AWS Client VPN is a managed client-based VPN service based on OpenVPN that enables you to securely access your AWS resources and resources in your on-premises network. With Client VPN, you can access your resources from any location using [any OpenVPN-based VPN client](https://docs.aws.amazon.com/vpn/latest/clientvpn-user/connect-aws-client-vpn-connect.html).
> [!TIP]
> #### 👽 Use Atmos with Terraform
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## Usage
For a complete example, see [examples/complete](examples/complete).
For automated tests of the complete example using [bats](https://github.com/bats-core/bats-core) and [Terratest](https://github.com/gruntwork-io/terratest)
(which tests and deploys the example on AWS), see [test](test).
```hcl
module "vpc_target" {
source = "cloudposse/vpc/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
cidr_block = "172.16.0.0/16"
context = module.this.context
}
module "vpc_client" {
source = "cloudposse/vpc/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
cidr_block = "172.31.0.0/16"
context = module.this.context
}
module "subnets" {
source = "cloudposse/dynamic-subnets/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
availability_zones = var.availability_zones
vpc_id = module.vpc_target.vpc_id
igw_id = module.vpc_target.igw_id
cidr_block = module.vpc_target.vpc_cidr_block
nat_gateway_enabled = true
nat_instance_enabled = false
context = module.this.context
}
module "ec2_client_vpn" {
source = "cloudposse/ec2-client-vpn/aws"
# Cloud Posse recommends pinning every module to a specific version
# version = "x.x.x"
client_cidr = module.vpc_client.vpc_cidr_block
organization_name = var.organization_name
logging_enabled = var.logging_enabled
retention_in_days = var.retention_in_days
associated_subnets = module.subnets.private_subnet_ids
authorization_rules = var.authorization_rules
additional_routes = [
{
destination_cidr_block = "0.0.0.0/0"
description = "Internet Route"
target_vpc_subnet_id = element(module.subnets.private_subnet_ids, 0)
}
]
}
```
> [!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`](https://github.com/cloudposse/terraform-aws-ec2-client-vpn/examples/complete/) - complete example of using this module
## Makefile Targets
```text
Available targets:
help Help screen
help/all Display help for all targets
help/short This help short screen
lint Lint terraform code
```
## Requirements
| Name | Version |
|------|---------|
| [terraform](#requirement\_terraform) | >= 1.0 |
| [aws](#requirement\_aws) | >= 4.0 |
| [awsutils](#requirement\_awsutils) | >= 0.16.0 |
## Providers
| Name | Version |
|------|---------|
| [aws](#provider\_aws) | >= 4.0 |
| [awsutils](#provider\_awsutils) | >= 0.16.0 |
## Modules
| Name | Source | Version |
|------|--------|---------|
| [cloudwatch\_log](#module\_cloudwatch\_log) | cloudposse/cloudwatch-logs/aws | 0.6.8 |
| [self\_signed\_cert\_ca](#module\_self\_signed\_cert\_ca) | cloudposse/ssm-tls-self-signed-cert/aws | 1.3.0 |
| [self\_signed\_cert\_root](#module\_self\_signed\_cert\_root) | cloudposse/ssm-tls-self-signed-cert/aws | 1.3.0 |
| [self\_signed\_cert\_server](#module\_self\_signed\_cert\_server) | cloudposse/ssm-tls-self-signed-cert/aws | 1.3.0 |
| [this](#module\_this) | cloudposse/label/null | 0.25.0 |
| [vpn\_security\_group](#module\_vpn\_security\_group) | cloudposse/security-group/aws | 2.2.0 |
## Resources
| Name | Type |
|------|------|
| [aws_ec2_client_vpn_authorization_rule.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_client_vpn_authorization_rule) | resource |
| [aws_ec2_client_vpn_endpoint.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_client_vpn_endpoint) | resource |
| [aws_ec2_client_vpn_network_association.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_client_vpn_network_association) | resource |
| [aws_ec2_client_vpn_route.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_client_vpn_route) | resource |
| [aws_iam_saml_provider.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_saml_provider) | resource |
| [aws_ssm_parameter.ca_key](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ssm_parameter) | data source |
| [aws_ssm_parameter.root_key](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ssm_parameter) | data source |
| [awsutils_ec2_client_vpn_export_client_config.default](https://registry.terraform.io/providers/cloudposse/awsutils/latest/docs/data-sources/ec2_client_vpn_export_client_config) | data source |
## Inputs
| Name | Description | Type | Default | Required |
|------|-------------|------|---------|:--------:|
| [additional\_routes](#input\_additional\_routes) | A list of additional routes that should be attached to the Client VPN endpoint |
list(object({
destination_cidr_block = string
description = string
target_vpc_subnet_id = string
})) | `[]` | no |
| [additional\_security\_group\_rules](#input\_additional\_security\_group\_rules) | A list of Security Group rule objects to add to the created security group, in addition to the ones
this module normally creates. (To suppress the module's rules, set `create_security_group` to false
and supply your own security group via `associated_security_group_ids`.)
The keys and values of the objects are fully compatible with the `aws_security_group_rule` resource, except
for `security_group_id` which will be ignored, and the optional "key" which, if provided, must be unique and known at "plan" time.
To get more info see https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/security_group_rule . | `list(any)` | `[]` | no |
| [additional\_security\_groups](#input\_additional\_security\_groups) | DEPRECATED: Use `associated_security_group_ids` instead.
List of security groups to attach to the client vpn network associations | `list(string)` | `[]` | no |
| [additional\_tag\_map](#input\_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 |
| [allow\_self\_security\_group](#input\_allow\_self\_security\_group) | Whether the security group itself will be added as a source to this ingress rule. | `bool` | `true` | no |
| [allowed\_cidr\_blocks](#input\_allowed\_cidr\_blocks) | A list of IPv4 CIDRs to allow access to the security group created by this module.
The length of this list must be known at "plan" time. | `list(string)` | `[]` | no |
| [allowed\_ipv6\_cidr\_blocks](#input\_allowed\_ipv6\_cidr\_blocks) | A list of IPv6 CIDRs to allow access to the security group created by this module.
The length of this list must be known at "plan" time. | `list(string)` | `[]` | no |
| [allowed\_ipv6\_prefix\_list\_ids](#input\_allowed\_ipv6\_prefix\_list\_ids) | A list of IPv6 Prefix Lists IDs to allow access to the security group created by this module.
The length of this list must be known at "plan" time. | `list(string)` | `[]` | no |
| [allowed\_security\_group\_ids](#input\_allowed\_security\_group\_ids) | A list of IDs of Security Groups to allow access to the security group created by this module.
The length of this list must be known at "plan" time. | `list(string)` | `[]` | no |
| [associated\_security\_group\_ids](#input\_associated\_security\_group\_ids) | A list of IDs of Security Groups to associate the VPN endpoints with, in addition to the created security group.
These security groups will not be modified and, if `create_security_group` is `false`, must have rules providing the desired access. | `list(string)` | `[]` | no |
| [associated\_subnets](#input\_associated\_subnets) | List of subnets to associate with the VPN endpoint | `list(string)` | n/a | yes |
| [attributes](#input\_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 |
| [authentication\_type](#input\_authentication\_type) | One of `certificate-authentication` or `federated-authentication` | `string` | `"certificate-authentication"` | no |
| [authorization\_rules](#input\_authorization\_rules) | List of objects describing the authorization rules for the client vpn | `list(map(any))` | `[]` | no |
| [ca\_common\_name](#input\_ca\_common\_name) | Unique Common Name for CA self-signed certificate | `string` | `null` | no |
| [client\_cidr](#input\_client\_cidr) | Network CIDR to use for clients | `string` | n/a | yes |
| [client\_conf\_tmpl\_path](#input\_client\_conf\_tmpl\_path) | Path to template file of vpn client exported configuration. Path is relative to ${path.module} | `string` | `null` | no |
| [context](#input\_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 |
| [create\_security\_group](#input\_create\_security\_group) | Set `true` to create and configure a new security group. If false, `associated_security_group_ids` must be provided. | `bool` | `true` | no |
| [delimiter](#input\_delimiter) | Delimiter to be used between ID elements.
Defaults to `-` (hyphen). Set to `""` to use no delimiter at all. | `string` | `null` | no |
| [descriptor\_formats](#input\_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
`{
format = string
labels = list(string)
}`
(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\_servers](#input\_dns\_servers) | Information about the DNS servers to be used for DNS resolution. A Client VPN endpoint can have up to two DNS servers. If no DNS server is specified, the DNS address of the connecting device is used. | `list(string)` | `[]` | no |
| [enabled](#input\_enabled) | Set to false to prevent the module from creating any resources | `bool` | `null` | no |
| [environment](#input\_environment) | ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT' | `string` | `null` | no |
| [export\_client\_certificate](#input\_export\_client\_certificate) | Flag to determine whether to export the client certificate with the VPN configuration | `bool` | `false` | no |
| [id\_length\_limit](#input\_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](#input\_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](#input\_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](#input\_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](#input\_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 |
| [logging\_enabled](#input\_logging\_enabled) | Enables or disables Client VPN Cloudwatch logging. | `bool` | `false` | no |
| [logging\_stream\_name](#input\_logging\_stream\_name) | Names of stream used for logging | `string` | n/a | yes |
| [name](#input\_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](#input\_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 |
| [organization\_name](#input\_organization\_name) | Name of organization to use in private certificate | `string` | n/a | yes |
| [regex\_replace\_chars](#input\_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 |
| [retention\_in\_days](#input\_retention\_in\_days) | Number of days you want to retain log events in the log group | `number` | `"30"` | no |
| [root\_common\_name](#input\_root\_common\_name) | Unique Common Name for Root self-signed certificate | `string` | `null` | no |
| [saml\_metadata\_document](#input\_saml\_metadata\_document) | Optional SAML metadata document. Must include this or `saml_provider_arn` | `string` | `null` | no |
| [saml\_provider\_arn](#input\_saml\_provider\_arn) | Optional SAML provider ARN. Must include this or `saml_metadata_document` | `string` | `null` | no |
| [secret\_path\_format](#input\_secret\_path\_format) | The path format to use when writing secrets to the certificate backend.
The certificate secret path will be computed as `format(var.secret_path_format, var.name, var.secret_extensions.certificate)`
and the private key path as `format(var.secret_path_format, var.name, var.secret_extensions.private_key)`.
Thus by default, if `var.name`=`example-self-signed-cert`, then the resulting secret paths for the self-signed certificate's
PEM file and private key will be `/example-self-signed-cert.pem` and `/example-self-signed-cert.key`, respectively.
This variable can be overridden in order to create more specific certificate backend paths. | `string` | `"/%s.%s"` | no |
| [security\_group\_create\_before\_destroy](#input\_security\_group\_create\_before\_destroy) | Set `true` to enable Terraform `create_before_destroy` behavior on the created security group.
Note that changing this value will always cause the security group to be replaced. | `bool` | `true` | no |
| [security\_group\_create\_timeout](#input\_security\_group\_create\_timeout) | How long to wait for the security group to be created. | `string` | `"10m"` | no |
| [security\_group\_delete\_timeout](#input\_security\_group\_delete\_timeout) | How long to retry on `DependencyViolation` errors during security group deletion from
lingering ENIs left by certain AWS services such as Elastic Load Balancing. | `string` | `"15m"` | no |
| [security\_group\_description](#input\_security\_group\_description) | The description to assign to the created Security Group.
Warning: Changing the description causes the security group to be replaced. | `string` | `null` | no |
| [security\_group\_name](#input\_security\_group\_name) | The name to assign to the created security group. Must be unique within the VPC.
If not provided, will be derived from the `null-label.context` passed in.
If `create_before_destroy` is true, will be used as a name prefix. | `list(string)` | `[]` | no |
| [self\_service\_portal\_enabled](#input\_self\_service\_portal\_enabled) | Specify whether to enable the self-service portal for the Client VPN endpoint | `bool` | `false` | no |
| [self\_service\_saml\_provider\_arn](#input\_self\_service\_saml\_provider\_arn) | The ARN of the IAM SAML identity provider for the self service portal if type is federated-authentication. | `string` | `null` | no |
| [server\_common\_name](#input\_server\_common\_name) | Unique Common Name for Server self-signed certificate | `string` | `null` | no |
| [session\_timeout\_hours](#input\_session\_timeout\_hours) | The maximum session duration is a trigger by which end-users are required to re-authenticate prior to establishing a VPN session. Default value is 24. Valid values: 8 \| 10 \| 12 \| 24 | `string` | `"24"` | no |
| [split\_tunnel](#input\_split\_tunnel) | Indicates whether split-tunnel is enabled on VPN endpoint. Default value is false. | `bool` | `false` | no |
| [stage](#input\_stage) | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | `string` | `null` | no |
| [tags](#input\_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](#input\_tenant) | ID element \_(Rarely used, not included by default)\_. A customer identifier, indicating who this instance of a resource is for | `string` | `null` | no |
| [transport\_protocol](#input\_transport\_protocol) | Transport protocol used by the TLS sessions. | `string` | `"udp"` | no |
| [vpc\_id](#input\_vpc\_id) | ID of VPC to attach VPN to | `string` | n/a | yes |
## Outputs
| Name | Description |
|------|-------------|
| [client\_configuration](#output\_client\_configuration) | VPN Client Configuration data. |
| [full\_client\_configuration](#output\_full\_client\_configuration) | Client configuration including client certificate and private key |
| [vpn\_endpoint\_arn](#output\_vpn\_endpoint\_arn) | The ARN of the Client VPN Endpoint Connection. |
| [vpn\_endpoint\_dns\_name](#output\_vpn\_endpoint\_dns\_name) | The DNS Name of the Client VPN Endpoint Connection. |
| [vpn\_endpoint\_id](#output\_vpn\_endpoint\_id) | The ID of the Client VPN Endpoint Connection. |
## Related Projects
Check out these related projects.
- [terraform-aws-components](https://github.com/cloudposse/terraform-aws-components) - Repository collection of aws components.
- [terraform-aws-ssm-tls-self-signed-cert](https://github.com/cloudposse/terraform-aws-ssm-tls-self-signed-cert) - This module creates a self-signed certificate and writes it alongside with its key to SSM Parameter Store (or alternatively AWS Secrets Manager). Used to store VPN certificates in ACM.
- [terraform-provider-awsutils](https://github.com/cloudposse/terraform-provider-awsutils) - Terraform provider for performing various tasks that cannot be performed with the official AWS Terraform Provider from Hashicorp. Used to export vpn client configuration.
## References
For additional context, refer to some of these links.
- [OpenVPN Clients](https://docs.aws.amazon.com/vpn/latest/clientvpn-user/connect-aws-client-vpn-connect.html) - Any OpenVPN client should be compatible with the AWS Client VPN.
> [!TIP]
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## ✨ Contributing
This project is under active development, and we encourage contributions from our community.
Many thanks to our outstanding contributors:
For 🐛 bug reports & feature requests, please use the [issue tracker](https://github.com/cloudposse/terraform-aws-ec2-client-vpn/issues).
In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.
1. Review our [Code of Conduct](https://github.com/cloudposse/terraform-aws-ec2-client-vpn/?tab=coc-ov-file#code-of-conduct) and [Contributor Guidelines](https://github.com/cloudposse/.github/blob/main/CONTRIBUTING.md).
2. **Fork** the repo on GitHub
3. **Clone** the project to your own machine
4. **Commit** changes to your own branch
5. **Push** your work back up to your fork
6. Submit a **Pull Request** so that we can review your changes
**NOTE:** Be sure to merge the latest changes from "upstream" before making a pull request!
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## License
Preamble to the Apache License, Version 2.0
Complete license is available in the [`LICENSE`](LICENSE) file.
```text
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
```
## Trademarks
All other trademarks referenced herein are the property of their respective owners.
## Copyrights
Copyright © 2020-2025 [Cloud Posse, LLC](https://cloudposse.com)
