Allow Api call Elastic Beanstalk Load Balancer Access from AWS Workspaces only

To restrict access to your Elastic Beanstalk (EB) environments so that only your AWS WorkSpaces in the organization can access them, you can use a combination of Amazon VPC (Virtual Private Cloud) configurations and IP address-based access control for WorkSpaces. Here are the steps you might consider:

1. Amazon WorkSpaces IP Access Control: Amazon WorkSpaces allows you to control the IP addresses from which your WorkSpaces can be accessed using IP Access Control Groups. You can define and manage groups of trusted IP addresses and only allow users to access their WorkSpaces when connected to a trusted network. These groups can be added to your directories on the Update Details page or via the AWS CLI or APIs.

2. Elastic Beanstalk and VPC Configuration: You can use an Amazon VPC to create a secure network for your EB application and related AWS resources. When you create your EB environment, you can choose which VPC, subnets, and security groups are used for your application instances and load balancer. To restrict internet access and only allow traffic from within your VPC or an attached VPN, you can run your application in private subnets and configure the load balancer to be internally facing.

3. VPC Endpoints: If your EB environment is within a private VPC, you can configure VPC endpoints for Elastic Beanstalk and other AWS services that your application needs to interact with (like S3, SQS, CloudFormation, and CloudWatch Logs). VPC endpoints ensure that traffic to these services stays within the Amazon network and doesn't require internet access.

4. Network Configuration for Multi-Region Setup: If your WorkSpaces are in a different region, you'll need to ensure that the VPC in which your EB environment resides is peered with the VPC of the WorkSpaces, or that you have appropriate routing set up to allow the WorkSpaces to communicate with the EB environment across regions.

5. Static IPs for WorkSpaces: While AWS WorkSpaces does not inherently have static IPs as they are designed to be accessed from varying locations, the IP Access Control feature allows you to specify the IP ranges that can access the WorkSpaces. If your network configuration ensures that the WorkSpaces have static IPs or a static range within your organization, you can use these IPs to set up the access control.

By combining these features and configurations, you can create a secure setup that allows only your WorkSpaces to access your EB environments. Remember to consider the security implications and ensure that your VPC peering and routing are properly configured to prevent unwanted access.