AWS Amazon EC2 VPN Connection Route

This page shows how to write Terraform and CloudFormation for Amazon EC2 VPN Connection Route and write them securely.

aws_vpn_connection_route (Terraform)

The VPN Connection Route in Amazon EC2 can be configured in Terraform with the resource name aws_vpn_connection_route. The following sections describe 2 examples of how to use the resource and its parameters.

Example Usage from GitHub

vpn.tf#L34
resource "aws_vpn_connection_route" "aws-third-party-infrastructuree-vpn" {
  destination_cidr_block = "10.215.0.0/16"
  vpn_connection_id      = aws_vpn_connection.aws-third-party-infrastructure-vpn.id
}

resource "aws_vpn_connection_route" "aws-third-party-infrastructure-1" {
aws_vpn_connection_route.tf#L1
resource "aws_vpn_connection_route" "vpn_connection_route_1" {
  destination_cidr_block = azurerm_virtual_network.vnet.address_space[0]
  vpn_connection_id      = aws_vpn_connection.vpn_connection_1.id
}

resource "aws_vpn_connection_route" "vpn_connection_route_2" {

Review your Terraform file for AWS best practices

Shisho Cloud, our free checker to make sure your Terraform configuration follows best practices, is available (beta).

Parameters

Explanation in Terraform Registry

Provides a static route between a VPN connection and a customer gateway.

Tips: Best Practices for The Other AWS Amazon EC2 Resources

In addition to the aws_default_vpc, AWS Amazon EC2 has the other resources that should be configured for security reasons. Please check some examples of those resources and precautions.

risk-label

aws_default_vpc

Ensure to avoid using default VPC

It is better to define the own VPC and use it.

risk-label

aws_network_acl_rule

Ensure your network ACL rule blocks unwanted inbound traffic

It is better to block unwanted inbound traffic.

risk-label

aws_ebs_volume

Ensure to use a customer-managed key for EBS volume encryption

It is better to use a customer-managed key for EBS volume encryption. It can be gain more control over the encryption by using customer-managed keys (CMK).

risk-label

aws_instance

Ensure to avoid storing AWS access keys in user data

It is better to avoid storing AWS access keys in user data. `aws_iam_instance_profile` could be used instead.

risk-label

aws_security_group

Ensure your security group blocks unwanted inbound traffic

It is better to block unwanted inbound traffic.

Review your AWS Amazon EC2 settings

In addition to the above, there are other security points you should be aware of making sure that your .tf files are protected in Shisho Cloud.

AWS::EC2::VPNConnectionRoute (CloudFormation)

The VPNConnectionRoute in EC2 can be configured in CloudFormation with the resource name AWS::EC2::VPNConnectionRoute. The following sections describe 10 examples of how to use the resource and its parameters.

Example Usage from GitHub

vpn.yml#L60
    Type: AWS::EC2::VPNConnectionRoute
    Properties:
      DestinationCidrBlock: !Ref InternalAccessCIDRBlock
      VpnConnectionId: !Ref VPNConnection

Outputs:
aws-vpn-stack.yml#L60
#    Type: "AWS::EC2::VPNConnectionRoute"
#    Properties:
#      DestinationCidrBlock:
#      VpnConnectionId: !Ref VPNConnection
PrivatePart.yml#L58
        Type: "AWS::EC2::VPNConnectionRoute"
        Properties:
            VpnConnectionId: !Ref VPNConnection
            DestinationCidrBlock: "192.168.100.0/24"

    VPNGatewayRoutePropagation:
Cloudformation%20Openswan.yml#L199
    Type: AWS::EC2::VPNConnectionRoute
    Properties:
      VpnConnectionId: !Ref VPNConnection
      DestinationCidrBlock: !Ref 01VpcCIDR

  VPNConnectionRoute2:
master.yml#L185
    Type: 'AWS::EC2::VPNConnectionRoute'
    Properties:
      DestinationCidrBlock:
        Ref: TunnelInsideCidr1
      VpnConnectionId:
        Ref: VpnConnection
Ec2VpnConnectionRouteSpecification.json#L4
    "AWS::EC2::VPNConnectionRoute": {
      "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpn-connection-route.html",
      "Properties": {
        "DestinationCidrBlock": {
          "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpn-connection-route.html#cfn-ec2-vpnconnectionroute-cidrblock",
          "PrimitiveType": "String",
custvpn.json#L36
       "Type" : "AWS::EC2::VPNConnectionRoute",
       "Properties" : {
         "DestinationCidrBlock" : {"Fn::Join":["",["",{"Ref":"CustomerPrivateIP"}]]},
         "VpnConnectionId" : {"Ref" : "VPNConnection"}
      }
    }
vpn_connection_route.json#L3
        "Type": "AWS::EC2::VPNConnectionRoute",
        "Properties": {
            "VpnConnectionId": { "Ref": "VPCVPNConnection"},
            "DestinationCidrBlock": { "Ref": "OfficeLocalCIDRParam"}
        }
    }
Ec2VpnConnectionRouteSpecification.json#L3
    "AWS::EC2::VPNConnectionRoute": {
      "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpn-connection-route.html",
      "Properties": {
        "DestinationCidrBlock": {
          "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpn-connection-route.html#cfn-ec2-vpnconnectionroute-cidrblock",
          "PrimitiveType": "String",
Ec2VpnConnectionRouteSpecification.json#L3
    "AWS::EC2::VPNConnectionRoute": {
      "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpn-connection-route.html",
      "Properties": {
        "DestinationCidrBlock": {
          "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpn-connection-route.html#cfn-ec2-vpnconnectionroute-cidrblock",
          "PrimitiveType": "String",

Parameters

Explanation in CloudFormation Registry

Specifies a static route for a VPN connection between an existing virtual private gateway and a VPN customer gateway. The static route allows traffic to be routed from the virtual private gateway to the VPN customer gateway.

For more information, see AWS Site-to-Site VPN in the AWS Site-to-Site VPN User Guide.

Frequently asked questions

What is AWS Amazon EC2 VPN Connection Route?

AWS Amazon EC2 VPN Connection Route is a resource for Amazon EC2 of Amazon Web Service. Settings can be wrote in Terraform and CloudFormation.

Where can I find the example code for the AWS Amazon EC2 VPN Connection Route?

For Terraform, the wellcometrust/ncw-terraform-modules and gmirsky/aws-azure-vpn source code examples are useful. See the Terraform Example section for further details.

For CloudFormation, the myshkin5/aws-musings, djoreilly/aws-vpn-testing and BOURGUITSamuel/P10_OC_PROJECT source code examples are useful. See the CloudFormation Example section for further details.