Books

Eight domains, 63 sub-sections, 260 questions with full explanations, and ten investigations drawn from real branch and campus networks. This guide covers every topic on the WLSI 300-120 v1.2 blueprint, built throughout on the Catalyst 9800 running IOS XE, with complete configurations you can read as you would type them and verification commands beside every one. Written for engineers who want the material to still be useful the week after the exam.

From a wiped Pixel to a fully hardened daily driver — and beyond. GrapheneOS Layers gives you the complete, progressive path that official documentation stops short of: precise installation, usable privacy baseline, multi-profile isolation, banking that actually works, carrier and eSIM reliability, full backup/migration, and a living personal threat model. Every procedure is self-contained, numbered, verified against grapheneos.org, and backed by exhaustive troubleshooting. Free lifetime updates included.

Understand the threats. Learn the defenses. Build a stronger foundation in Network Security.Modern organizations depend on computer networks for communication, business operations, cloud services, applications, and data exchange. With this growing connectivity comes an equally important challenge: protecting networks from unauthorized access, attacks, vulnerabilities, and security incidents.Network Security: A Comprehensive Guide for Beginners and Advanced Learners provides a structured learning journey for students and aspiring security professionals who want to understand how modern networks are protected.The book begins with the fundamentals of networking and network security, covering network topologies, OSI and TCP/IP models, network devices, IP addressing, subnetting, protocols, and ports. It then moves into common cyber threats and vulnerabilities, including malware, phishing, social engineering, DoS and DDoS attacks, Man-in-the-Middle attacks, weak authentication, and software vulnerabilities.Readers will learn important security principles such as the CIA Triad, AAA, Defense-in-Depth, Least Privilege, and Risk Management, followed by an introduction to cryptography, encryption, digital signatures, certificates, TLS, IPsec, and PKI.The book also explores firewalls, IDS, IPS, SIEM, VPNs, wireless security, Network Access Control, web application security, HTTPS, secure development practices, incident response, digital forensics concepts, disaster recovery, and business continuity.The final chapters look toward the future, introducing Zero Trust, Next-Generation Firewalls, AI and Machine Learning in cybersecurity, Cloud Security, and IoT Security.For students, the book provides a strong academic foundation. For aspiring professionals, it introduces important technologies, responsibilities, career paths, and security practices.The goal is not simply to learn how attacks occur, but to understand how responsible security professionals identify risks, protect systems, respond to incidents, and continuously improve security.Learn the fundamentals. Understand the risks. Think like a security professional.

Running NetBSD in production is one thing. Running it under serious traffic is another. NetBSD at Scale shows how to design, secure, tune and operate infrastructure built for real workloads. From architecture and automation to high availability and disaster recovery, it is a practical guide for engineers who need systems that keep working.

Build real-time web apps that hold up beyond the demo. This hands-on guide takes you from WebSocket fundamentals and Socket.IO essentials to security, Redis scaling, monitoring and production deployment. Learn how the pieces work, why they matter and how to build fast, reliable systems ready for serious traffic.

Build web scrapers that survive the real world. This hands-on guide takes you from Scrapy fundamentals to scalable production systems, with practical patterns for asynchronous crawling, clean data pipelines, testing, deployment and resilient architectures. Packed with runnable Python examples, it gives you the skills to scrape smarter, faster and at scale.

Cross the process boundary with a systems-level guide to concurrency, async I/O, IPC, TCP, TLS, HTTP/2, gRPC, retries, queues, consistency, observability, and the real cost of distribution.

Most ENCOR guides tell you what a protocol does. This one shows you the whole configuration, the output that proves it works, and the exact line that tells you when it doesn't.

Cloud networks rarely fail in obvious ways. A DNS lookup breaks, a route disappears or traffic vanishes somewhere between clouds. This book shows you how to understand what is really happening, build networks that hold up under pressure and troubleshoot failures with confidence across AWS, Azure, Google Cloud, Kubernetes and hybrid environments.

See what your network traffic is really revealing. This practical guide breaks down TLS fingerprinting, JA3/JA4 and HTTP client identification, then shows you how to put them to work with Python, Go and Rust. From protocol internals to production pipelines, learn how to identify clients at scale without losing sight of privacy or operational reality.

What really happens when you open a website, send a message or connect to a server across the world? This book builds the Internet from first principles, revealing how bits become packets, packets cross networks and protocols make it all work. Learn the machinery behind the Internet by understanding why each piece exists and how it fits together.

Build OpenStack with confidence, from your first deployment to production at scale. This hands-on guide walks you through planning, configuration, security, daily operations and troubleshooting with practical examples and proven techniques. A dependable resource for admins, DevOps engineers and cloud architects.

Field-level hardening for DCS/PLC and industrial network setups. Skip the generic IT fluff—get direct, actionable blueprints covering Purdue model network segmentation, asset tracking, countermeasures, and a complete implementation checklist.

The 350-701 exam changed in August 2026. This guide was written for the version you are about to sit — all six domains, all 47 topics, in blueprint order.

Learn to build fast, scalable asynchronous applications in C with libuv, the cross-platform library behind Node.js. Through practical examples and clear explanations, you'll master event-driven programming and write high-performance software that runs efficiently across Linux, macOS and Windows.