As a gatekeeper, security must be one of your top concerns when managing a functional network for your production environment in the cloud. Keeping your environment secure while giving your developers the freedom to experiment and learn new services offered by AWS is a challenge. In this regard, we are here to help you.
This reference design leverages the multi tenants’ capability of an Aviatrix Controller to build sandboxes for your developers. While the developer has full administrative authority to her sandbox, the sandbox itself is isolated from your main production environments.
The network diagram is shown below,
where the Aviatrix Controller instance can be in the same or a different VPC, and two developers’ sandboxes are shown: John (10.10.0.0/16) and Sam (10.5.0.0/16).
In this configuration, assume you want the VPN to be in split tunnel mode, that is, only traffic destined to the cloud goes through the SSL tunnel. If a user does general browsing to Internet or watches movies from Hulu, traffic should be routed via her device WI-FI to ISP to Internet. You do not wish to pay AWS for this type of compute and network cost.
The solution is to give John and Sam each their own AWS accounts and link their accounts to your corporate root account, using the Consolidated Billing feature offered by AWS.
With John’s own AWS account and API credentials, you can create a corresponding Cloud Account on the controller. Using this Cloud Account, you can create VPC for John. John may have more privileges in his VPC.
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We assume here that you have created a management VPC 172.31.0.0/16, its corresponding VPN gateways and John has been added as a VPN user. For more information for this part of configuration, check out this reference design:
The configuration workflow is as follows, with major steps highlighted.
Create a Cloud Account for John.
Go to Accounts > Cloud Account > New Account, make sure:
- The Account Name is unique to the Controller, for example, JohnSmith.
- The Account Password can be used to log in in with Account Name.
- An email will be sent for this account created.
- Add AWS credentials for this account.
Create a VPC and Gateway for John.
Go to Advanced Config > Create VPC Pool > Create:
- Account Name: JohnSmith
- Pool Name: John
- Number of VPCs: 1
- VPC Size: the gateway size. A t2.micro may be all you need. A t2.micro Aviatrix Gateway performance is between 40mbps to 80mbps.
- Launch Gateway: mark this checkbox.
- Custom CloudFormation Script: a URL that points to your custom CloudFormation script in S3. Note that only VPC ID is taken as input parameter. After gateway is launched, a CloudFormation stack will be created. One use case for this script is security groups and policies.
- Public Subnets: check. This will create subnets whose default gateway is IGW.
- Enable NAT: check. If this is checked, NAT function is integrated on the gateway.
Build Encrypted Peering.
Go to Peering > Encrypted Peering > New Peering.
Note that each VPC is represented by one or more gateways. Make sure you want to peer between two gateways without VPN capability. In this example, the peering is between John and the peering gateway in the management VPC 172.31.0.0/16 (not the VPN gateway)
Repeat the above two steps for other developers or projects.
If you have not done so, add VPN user John to the cloud network. Go to OpenVPN®, Use Profile to control which user can access what cloud instance/application/ports.
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