Overview

Overview articles provide background information and context to explain a concept rather than serving as a step-by-step guide. In this case, our overview explains the cybersecurity testbed for Distributed Energy Resources (DERs).

What is the Cybersecurity Testbed for DERs?

The cybersecurity testbed is a specialized environment designed to emulate a DER Sunspec Modbus inverter, generate corresponding network traffic, and simulate DER-specific communication protocols (like Sunspec Modbus). This emulated environment provides the foundation for red and blue team activities aimed at testing and addressing cybersecurity issues within DERs.

Background and Purpose

Motivation:
The testbed was created to address and resolve cybersecurity issues specific to Distributed Energy Resources.
As DERs become more integral to modern energy infrastructure, ensuring robust security measures is essential.
Need:
With DERs increasingly relying on networked devices and cloud infrastructure, it is critical to understand and
mitigate potential cyber threats. This testbed offers a controlled, repeatable environment to study these risks
and develop effective countermeasures.

Key Components and Architecture

Hybrid Kubernetes Cluster:
The testbed utilizes a hybrid setup combining cloud resources with on-premise devices. It leverages cloud-agnostic
infrastructure to ensure broad compatibility and ease of deployment.
Hardware Components:
- Jetson Nvidia Devices (Nano and AGX): Used for their powerful processing capabilities to handle complex
- tasks and emulate DER operations.
- Raspberry Pis: Offer flexibility and cost efficiency, serving as additional nodes in the cluster.
Software Architecture:
- Event-Driven and Microservice Based:
  
  The testbed is designed to be event-driven and built upon a microservices architecture, ensuring scalability and responsiveness to changing network conditions and attack vectors.
Traffic Emulation:
The system emulates network traffic associated with Sunspec Modbus protocols, thereby creating a realistic environment for cybersecurity testing through both offensive (red team) and defensive (blue team) activities.

Design Choices and Alternatives

Cloud-Agnostic Approach:
The decision to build a cloud-agnostic solution was driven by the need for flexibility. It allows the testbed to integrate seamlessly with various cloud providers and avoid vendor lock-in.
Event-Driven Architecture:
Choosing an event-driven, microservice-based design enables the testbed to quickly adapt to new requirements and scale dynamically. Alternative monolithic designs were considered but ultimately set aside in favor of this modern, modular approach.

Future Directions

At this point, future enhancements or expansions have not been fully defined. However, ongoing evaluation and iterative improvements will likely shape its evolution based on emerging cybersecurity challenges in the DER space.

Last modified: 21 February 2025