Service Mesh Security: Implementing Zero Trust Architecture Using Istio or Linkerd. - Softcover

Inhaltsangabe

The perimeter is dead. It is time to secure the chaos.

For decades, we secured our infrastructure like a medieval castle. We built thick firewalls, dug deep moats, and assumed that everything inside the walls was safe. But in the cloud-native era, the castle has fallen. We have broken our monoliths into thousands of microservices, running in ephemeral containers that spin up and die in seconds. IP addresses change constantly. Network boundaries are fluid. In this dynamic world, the old security models do not just fail; they provide a dangerous illusion of safety.

If a hacker breaches a single pod in your cluster, do they have the keys to your entire kingdom? In most Kubernetes environments, the answer is a terrifying "Yes."

Service Mesh Security is the definitive guide to dismantling the "hard shell, soft center" architecture and replacing it with a robust Zero Trust framework. This book is not a theoretical treaty on abstract security concepts. It is a battle-tested, hands-on manual for platform engineers, security architects, and DevOps practitioners who need to lock down their Kubernetes clusters today.

Written by an expert developer who has navigated the trenches of production outages and security audits, this book cuts through the marketing hype to reveal the engineering reality of the Service Mesh. Whether you choose the enterprise power of Istio or the radical simplicity of Linkerd, the principles remain the same: Never trust. Always verify.

Inside this comprehensive guide, you will learn how to:

• Kill the IP Address: Shift your security paradigm from network location (IPs) to cryptographic identity (SPIFFE). Learn how to assign a verifiable, unforgeable ID to every workload in your fleet.
• Encrypt Everything by Default: Implement "Zero-Touch" Mutual TLS (mTLS) to encrypt all service-to-service traffic. Discover how to automate certificate rotation every hour, limiting the blast radius of any potential key compromise.
• Enforce Deny-by-Default: Move beyond the permissive "allow-all" nature of Kubernetes. Learn to implement granular Authorization Policies that restrict access not just by service, but by HTTP method and path—preventing a compromised frontend from ever deleting your database.
  
• Secure the Edge: Harden your Ingress Gateways against the public internet and lock down Egress traffic to prevent data exfiltration to command-and-control servers.
• Achieve Forensic Visibility: Turn your network into a sensor. Use distributed tracing and access logs to reconstruct the exact path of an attack and generate the "Golden Audit Trail" required for SOC2 and PCI-DSS compliance.
• Future-Proof Your Stack: Dive into the bleeding edge of mesh technology, including the sidecar-less Ambient Mesh architecture, eBPF optimizations, and extending security logic with WebAssembly (Wasm).

This book does not shy away from the hard parts. It tackles the complexity of multi-cluster federation, the integration of legacy bare-metal servers, and the critical operational hardening required to protect the control plane itself.

Stop hoping your firewall will hold. Start building a network that assumes breach, limits impact, and secures your data at the source. This is your roadmap to a secure, resilient, and sleep-friendly infrastructure.

Welcome to the future of network security.

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