This article describes how to configure a Route-Based Site-to-Site IPsec VPN between an Acreto Ecosystem and the Amazon Web Services (AWS) Virtual Private Cloud (VPC) using static routing:
In order to setup IPsec Site-to-Site VPN tunnel between Acreto Ecosystem and AWS VPS you need:
Acreto as a Cloud Provider allows to connect and integrate multiple networks, both physical and virtual. All connections require stable and secure links. Virtual (EC2) Instances running on Amazon VPC can’t communicate securely with your own (remote) network by default. It is possible to connect your network to Acreto Ecosystem and then you can enable access to your remote network from your VPC by creating an AWS Site-to-Site VPN (Site-to-Site VPN) connection, and configuring routing to pass traffic through the connection.
Acreto Ecosystem configures the routing automatically and passes the traffic between AWS VPC and your network. Additionally, the traffic is scanned by the Acreto Threat Engine to block suspicious traffic and malware.
AWS Site-to-Site VPN limitations: IPv6 traffic is not supported for VPN connections on a virtual private gateway. An AWS VPN connection does not support Path MTU Discovery. In addition, take the following into consideration when you use Site-to-Site VPN.
Use the following procedures to manually set up the AWS Site-to-Site VPN connection on Amazon AWS.
You can create a Site-to-Site VPN connection with either a virtual private gateway or a transit gateway as the target gateway.
Use existing VPC or create a new VPC using the steps below :
Login to AWS console.
Goto the region where you want to create your VPC.
Search VPC in the Services search tab.
From the VPC Dashboard, click Your VPCs under VIRTUAL PRIVATE CLOUD in the left sidebar and click Create VPC
Create a VPC with the following values:
Click Create VPC
Now create a new subnet in the VPC address range. If you want to use an existing subnet, you can skip this step and use the pre-existing subnet in subsequent steps.
From the VPC Dashboard, click Subnets under VIRTUAL PRIVATE CLOUD in the left sidebar and click Create Subnet
Select the new VPC created in the Step 1 or your existing VPC in the VPC ID options.
Create a new Subnet under Subnet settings with the below details :
Click Create Subnet button
From the VPC Dashboard, click Internet Gateway under VIRTUAL PRIVATE CLOUD in the left sidebar and click Create Internet Gateway
Give the name for the Internet gateway and click Create internet gateway
Select the Internet gateway and click Actions and Attach to VPC
Assign your VPC
Click Attach internet gateway.
Configure Route table for the above subnet to reach Acreto’s public IP through Internet Gateway.
From the VPC Dashboard, click Route Tables under VIRTUAL PRIVATE CLOUD in the left sidebar and click Create Route Table
Create a Route table with the following values:
Click Create Route Table, with parameters as shown in screenshot below:
Select the Route table created above and click Subnet association, with parameters as shown in screenshot below:
Select your Subnet and click Save associations, with parameters as shown in screenshot below:
Select the routes and click Edit routes, with parameters as shown in screenshot below:
Add route for Acreto’s Default Tunnel IP used to form the VPN through the Internet Gateway, with parameters as shown in screenshot below:
Click Save changes.
Create new Customer Gateway with Acreto’s public IP.
From the VPC Dashboard in the left side bar, goto VIRTUAL PRIVATE NETWORK (VPN) » Customer Gateways
Click Create Customer Gateway
Provide the following values :
Click Create Customer Gateway.
Create a Virtual Private gateway that will be used to form the Ipsec tunnel with Acreto.
From the VPC Dashboard in the left sidebar, goto VIRTUAL PRIVATE NETWORK (VPN) » Virtual Private Gateways
Click Create Virtual Private Gateway
Give the name and click Create Virtual Private Gateway
Select the Virtual Private Gateway and click Actions » Attach to VPC
Select your VPC and click Yes, Attach button.
From the VPC Dashboard, click Route Tables under VIRTUAL PRIVATE CLOUD in the left sidebar.
Select the route table created in Step 4
Select the Route Propagation tab and click the button Edit route propagation.
Click the Save button.
This step ensures that the AWS virtual hosts receive a route for the 100.64.0.0/10 network (Acreto Ecosystem Internal network) after the VPN establishes.
Create a new VPN connection and associate the previously created VGW and CGW.
From the VPC Dashboard in the left sidebar, go to VIRTUAL PRIVATE NETWORK (VPN) » Site-to-Site VPN Connections.
Click Create VPN Connection.
Provide the following values in the tunnel setting:
Click Create VPN Connection.
Select the VPN created and click the tab Tunnel Details. Copy the Outside IP address of the tunnel to form a VPN with Acreto.
This Outside IP address will be used in the next steps to configure the Acreto gateway on Wedge Ecosystem.
Create Gateway on Ecosystem by following the instruction in the link. Provide the following values:
Click the gateway created on wedge.
Click the Play button under Configuration Options to generate the strongSwan Config.
Once the Config file is generated, click the Download button to download the configuration on the local computer.
Unzip the downloaded file and copy the psk from the file ipsec.secrets
Goto AWS Site-to-Site VPN connections
Select the VPN and click Actions » Modify VPN Tunnel Option
Select the tunnel used to create the VPN with Acreto.
Update the password copied from the ipsec.secrets file from strongSwan config file downloaded from Wedge
In the same window “Modify VPN Tunnel Options” scroll down and select the following action under tunnel configuration:
Configure Route table to set the default route to VPN tunnel
From the VPC Dashboard, click Route Tables under VIRTUAL PRIVATE CLOUD in the left sidebar
Select the Route table and click Edit routes
Add the following route :
Click Save changes.
Once the tunnel connection is successfully established, the status of the connection will be up.
To verify on AWS, navigate to the VPN created under VIRTUAL PRIVATE NETWORK (VPN) » Site-to-Site VPN Connections .
Verify the following:
Do a traceroute or equivalent command from an internal server to public IP like 18.104.22.168. It should show Acreto’s IP in the path.
Acreto IPsec Gateway allows to set up VPN tunnel to connect Acreto Ecosystem with Amazon Web Services (AWS) Virtual Private Cloud (VPC).