Air-gapped environments are critical for organizations where security is a top priority. These systems are isolated from the internet and external networks, ensuring sensitive data remains protected from external threats. However, running microservices in such environments introduces challenges, particularly in managing internal access and communication securely and efficiently.
This article covers how an Access Proxy simplifies the deployment and operation of microservices in air-gapped environments, improving security and internal connectivity while maintaining operational ease.
What is an Access Proxy for Air-Gapped Environments?
An Access Proxy acts as a mediator between components in your microservices architecture. In typical deployments, proxies facilitate traffic control, authentication, and logging. In an air-gapped setup, these responsibilities become more complex due to the lack of external connectivity.
By deploying an Access Proxy in an air-gapped environment, you enable microservices to communicate securely with one another while ensuring proper access control. This is particularly valuable for scenarios where multiple services rely on sensitive APIs or handle confidential data.
Why It's Complex to Deploy Microservices in Air-Gapped Systems
Air-gapped systems isolate entire infrastructures from public networks, introducing deployment and operational challenges not present in standard setups. Here’s why:
- No External Authentication Providers. Services like OAuth or OpenID are inaccessible. You must handle user and service authentication internally.
- Limited Communication Paths. Without external communication, service discovery and direct connections are restricted.
- Manual Configuration Risks. Administrators must configure everything explicitly, increasing the likelihood of errors in settings like access control rules.
These complexities demand specialized solutions to enforce security, route traffic, and simplify service operations.
The Role of an Access Proxy in Air-Gapped Deployments
Deploying an Access Proxy in air-gapped environments can address the issues outlined above. Here's how it works:
1. Internal Authentication and Authorization
An Access Proxy can serve as an internal access layer for authentication and authorization. Without external identity providers, it can validate users and services against pre-configured credentials.
- What it Solves: Prevents unauthorized access to sensitive services.
- Implementation: Use token-based mechanisms or self-hosted identity services as the source of truth.
2. Traffic Routing and Load Balancing
Access Proxies intelligently route traffic between microservices, ensuring only permitted traffic reaches specific endpoints. They can also implement load balancing for internal services to manage resources efficiently.
- What it Solves: Ensures operational scalability in isolated setups.
- Implementation: Configure routing rules specific to your microservices’ architecture.
3. Centralized Policy Enforcement
An air-gapped Access Proxy allows for centralized enforcement of policies such as rate limiting, network segmentation, and monitoring. These policies ensure services operate within set security and performance boundaries.
- What it Solves: Reduces administrative burden while maintaining compliance.
- Implementation: Define global or local policies for each microservice.
4. Service Observability
Some Access Proxies include observability features, providing detailed insights into traffic flow and behavior within the network. In an air-gapped environment, observability becomes critical as external monitoring services cannot be used.
- What it Solves: Offers visibility into system health and performance.
- Implementation: Leverage in-built metrics collection tools or integrate with self-hosted observability platforms.
Steps for Deploying an Access Proxy in Air-Gapped Systems
If you're considering an Access Proxy for your air-gapped deployment, follow these steps to ensure a smooth operation:
- Define Internal Access Policies.
Outline which microservices should interact, the allowed methods, and any necessary authentication mechanisms. - Deploy the Proxy Close to Services.
Place the Access Proxy near critical microservices for reduced latency and improved fault tolerance. - Configure Service-Level Authentication.
Use tokens or certificates to validate service-to-service communication internally. - Monitor Internal Traffic.
Ensure the system reports metrics, logs, and alerts within allowed organizational boundaries. - Run Regular Security Audits.
Since air-gapped environments prioritize security, regularly audit the entire system for compliance and vulnerability checks.
By designing your Access Proxy deployment thoughtfully, you transform air-gapped setups into efficient, secure microservices environments.
Conclusion
Deploying microservices in air-gapped environments doesn’t have to mean compromising on connectivity, security, or observability. Access Proxies offer a streamlined way to manage inter-service communication, enforce security policies, and provide observability—all while staying compliant with air-gapped constraints.
Want to see a secure Access Proxy in action? With Hoop, you can configure and deploy your Access Proxy in under 10 minutes. Try it here and experience how simple secure microservices access can be.