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ZTNA in Practice: Replace Legacy VPNs with Zero Trust Network Access, SASE, SSE, Identity-Based Security, and Secure Remote Access Architectures
Paperback
Computer SecuritySystem Administration
Publisher: Independently Published
Published: Jun 8 2026
Pages: 430
Weight: 2.18
Height: 0.87 Width: 8.50 Depth: 11.00
Language: English
Traditional VPNs were built for a world that no longer exists.
Modern organizations now operate across hybrid infrastructure, cloud-native platforms, Kubernetes environments, SaaS ecosystems, remote workforces, and multi-cloud architectures - yet many still rely on legacy VPN models that create excessive trust, broad network exposure, poor visibility, and dangerous lateral movement opportunities.
ZTNA in Practice is a hands-on, production-focused guide designed to help security engineers, DevOps teams, cloud architects, platform operators, and IT administrators replace outdated VPN-centric access models with modern Zero Trust Network Access (ZTNA), SASE, and identity-first secure access architectures.
Rather than focusing on theory alone, this book takes a purely practical approach to designing, deploying, hardening, monitoring, and operating modern Zero Trust environments using real-world tools, workflows, and production-grade security practices.
Inside this book, you will learn how to:
- Understand why traditional VPN architectures fail modern security requirements
- Design scalable Zero Trust architectures for cloud, Kubernetes, hybrid, and private infrastructure
- Deploy Cloudflare Zero Trust, Cloudflare Tunnel, Keycloak, Teleport, Wazuh, and modern identity-aware access workflows
- Secure Kubernetes dashboards, private APIs, SSH, RDP, and internal applications without exposing infrastructure publicly
- Implement MFA, WebAuthn, conditional access, device posture validation, RBAC, and adaptive security policies
- Build SIEM-integrated monitoring pipelines with access auditing, threat detection, and operational visibility
- Deploy browser isolation, CASB, SSE, and data loss prevention workflows
- Integrate Terraform automation and Policy-as-Code into Zero Trust operations
- Migrate safely from legacy VPN infrastructure to production-ready ZTNA environments
- Design resilient, highly available, identity-driven access architectures for modern distributed systems
- Simulate incidents, validate resilience, troubleshoot failures, and operationalize Zero Trust security at scale
This book goes beyond simple tunnel deployment tutorials. It focuses on the operational realities of running Zero Trust environments in production, including:
- governance
- segmentation
- access lifecycle management
- SIEM integration
- privileged access control
- adaptive trust enforcement
- operational troubleshooting
- failure recovery
- incident simulation
- long-term Zero Trust maturity
The book includes:
- practical hands-on labs in every chapter
- real deployment workflows
- production-grade architecture examples
- troubleshooting runbooks
- CLI and API cheat sheets
- Policy-as-Code templates
- operational checklists
- a complete full-stack end-to-end capstone project replacing a traditional VPN environment with a modern identity-first ZTNA platform
Whether you are building a new Zero Trust platform, modernizing legacy remote access infrastructure, securing cloud-native workloads, or preparing your organization for the future of identity-centric networking, this book provides the practical knowledge and hands-on experience required to design and operate modern secure access environments with confidence.
If you want to move beyond outdated VPN models and build scalable, production-ready Zero Trust architectures for the modern enterprise, this book will serve as your practical roadmap.
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