terraform-aws-vpn-connection

Terraform module to provision a site-to-site VPN connection between a VPC and an on-premises network.

The module does the following:

Creates a Virtual Private Gateway (VPG) and attaches it to the VPC
Creates a Customer Gateway (CGW) pointing to the provided IP address of the Internet-routable external interface on the on-premises network
Creates a Site-to-Site Virtual Private Network (VPN) connection and assigns it to the VPG and CGW
Requests automatic route propagation between the VPG and the provided route tables in the VPC
If the VPN connection is configured to use static routes, provisions a static route between the VPN connection and the CGW

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It's 100% Open Source and licensed under the APACHE2.

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Usage

IMPORTANT: We do not pin modules to versions in our examples because of the difficulty of keeping the versions in the documentation in sync with the latest released versions. We highly recommend that in your code you pin the version to the exact version you are using so that your infrastructure remains stable, and update versions in a systematic way so that they do not catch you by surprise.

Also, because of a bug in the Terraform registry (hashicorp/terraform#21417), the registry shows many of our inputs as required when in fact they are optional. The table below correctly indicates which inputs are required.

  module "vpn_connection" {
    source = "cloudposse/vpn-connection/aws"
    # Cloud Posse recommends pinning every module to a specific version
    # version = "x.x.x"
    namespace                                 = "eg"
    stage                                     = "dev"
    name                                      = "test"
    vpc_id                                    = "vpc-xxxxxxxx"
    vpn_gateway_amazon_side_asn               = 64512
    customer_gateway_bgp_asn                  = 65000
    customer_gateway_ip_address               = "172.0.0.1"
    route_table_ids                           = ["rtb-xxxxxxxx", "rtb-yyyyyyyy", "rtb-zzzzzzzz"]
    vpn_connection_static_routes_only         = "true"
    vpn_connection_static_routes_destinations = ["10.80.1.0/24"]
  }

Makefile Targets

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	>= 0.12.26
aws	>= 2.0
null	>= 2.0

Providers

Name	Version
aws	>= 2.0

Inputs

Name	Description	Type	Default	Required
additional_tag_map	Additional tags for appending to tags_as_list_of_maps. Not added to `tags`.	`map(string)`	`{}`	no
attributes	Additional attributes (e.g. `1`)	`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.	object({ enabled = bool namespace = string environment = string stage = string name = string delimiter = string attributes = list(string) tags = map(string) additional_tag_map = map(string) regex_replace_chars = string label_order = list(string) id_length_limit = number })	{ "additional_tag_map": {}, "attributes": [], "delimiter": null, "enabled": true, "environment": null, "id_length_limit": null, "label_order": [], "name": null, "namespace": null, "regex_replace_chars": null, "stage": null, "tags": {} }	no
customer_gateway_bgp_asn	The gateway's Border Gateway Protocol (BGP) Autonomous System Number (ASN)	`number`	`65000`	no
customer_gateway_ip_address	The IP address of the gateway's Internet-routable external interface	`string`	n/a	yes
delimiter	Delimiter to be used between `namespace`, `environment`, `stage`, `name` and `attributes`. Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.	`string`	`null`	no
enabled	Set to false to prevent the module from creating any resources	`bool`	`null`	no
environment	Environment, e.g. 'uw2', 'us-west-2', OR 'prod', 'staging', 'dev', 'UAT'	`string`	`null`	no
id_length_limit	Limit `id` to this many characters. Set to `0` for unlimited length. Set to `null` for default, which is `0`. Does not affect `id_full`.	`number`	`null`	no
label_order	The naming order of the id output and Name tag. Defaults to ["namespace", "environment", "stage", "name", "attributes"]. You can omit any of the 5 elements, but at least one must be present.	`list(string)`	`null`	no
name	Solution name, e.g. 'app' or 'jenkins'	`string`	`null`	no
namespace	Namespace, which could be your organization name or abbreviation, e.g. 'eg' or 'cp'	`string`	`null`	no
regex_replace_chars	Regex to replace chars with empty string in `namespace`, `environment`, `stage` and `name`. If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits.	`string`	`null`	no
route_table_ids	The IDs of the route tables for which routes from the Virtual Private Gateway will be propagated	`list(string)`	`[]`	no
stage	Stage, e.g. 'prod', 'staging', 'dev', OR 'source', 'build', 'test', 'deploy', 'release'	`string`	`null`	no
tags	Additional tags (e.g. `map('BusinessUnit','XYZ')`	`map(string)`	`{}`	no
vpc_id	The ID of the VPC to which the Virtual Private Gateway will be attached	`string`	n/a	yes
vpn_connection_static_routes_destinations	List of CIDR blocks to be used as destination for static routes. Routes to destinations will be propagated to the route tables defined in `route_table_ids`	`list(string)`	`[]`	no
vpn_connection_static_routes_only	If set to `true`, the VPN connection will use static routes exclusively. Static routes must be used for devices that don't support BGP	`string`	`"true"`	no
vpn_connection_tunnel1_inside_cidr	The CIDR block of the inside IP addresses for the first VPN tunnel	`string`	`null`	no
vpn_connection_tunnel1_preshared_key	The preshared key of the first VPN tunnel. The preshared key must be between 8 and 64 characters in length and cannot start with zero. Allowed characters are alphanumeric characters, periods(.) and underscores(_)	`string`	`null`	no
vpn_connection_tunnel2_inside_cidr	The CIDR block of the inside IP addresses for the second VPN tunnel	`string`	`null`	no
vpn_connection_tunnel2_preshared_key	The preshared key of the second VPN tunnel. The preshared key must be between 8 and 64 characters in length and cannot start with zero. Allowed characters are alphanumeric characters, periods(.) and underscores(_)	`string`	`null`	no
vpn_gateway_amazon_side_asn	The Autonomous System Number (ASN) for the Amazon side of the VPN gateway. If you don't specify an ASN, the Virtual Private Gateway is created with the default ASN	`number`	`64512`	no

Outputs

Name	Description
customer_gateway_id	Customer Gateway ID
vpn_connection_customer_gateway_configuration	The configuration information for the VPN connection's Customer Gateway (in the native XML format)
vpn_connection_id	VPN Connection ID
vpn_connection_tunnel1_address	The public IP address of the first VPN tunnel
vpn_connection_tunnel1_cgw_inside_address	The RFC 6890 link-local address of the first VPN tunnel (Customer Gateway side)
vpn_connection_tunnel1_vgw_inside_address	The RFC 6890 link-local address of the first VPN tunnel (Virtual Private Gateway side)
vpn_connection_tunnel2_address	The public IP address of the second VPN tunnel
vpn_connection_tunnel2_cgw_inside_address	The RFC 6890 link-local address of the second VPN tunnel (Customer Gateway side)
vpn_connection_tunnel2_vgw_inside_address	The RFC 6890 link-local address of the second VPN tunnel (Virtual Private Gateway side)
vpn_gateway_id	Virtual Private Gateway ID

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Related Projects

Check out these related projects.

terraform-aws-vpc - Terraform module that defines a VPC with public/private subnets across multiple AZs with Internet Gateways
terraform-aws-vpc-peering - Terraform module to create a peering connection between two VPCs
terraform-aws-kops-vpc-peering - Terraform module to create a peering connection between a backing services VPC and a VPC created by Kops
terraform-aws-dynamic-subnets - Terraform module for public and private subnets provisioning in existing VPC
terraform-aws-multi-az-subnets - Terraform module for multi-AZ public and private subnets provisioning
terraform-aws-named-subnets - Terraform module for named subnets provisioning

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Copyright

License

See LICENSE for full details.

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
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  https://www.apache.org/licenses/LICENSE-2.0

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Contributors

Erik Osterman	Andriy Knysh	Igor Rodionov	Josh Myers

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