Network Security, Firewalls, and VPNs, Fourth Edition, offers a comprehensive, vendor-neutral introduction to network security, covering firewalls, intrusion detection and prevention systems, and VPNs. Written in a clear and engaging style, the text transitions smoothly from basic principles to advanced topics, incorporating real-world examples and practical applications. Readers will find definitions, operational explanations, and examples that foster a solid understanding of how these technologies function and integrate within networks. The Fourth Edition has been completely rewritten to reflect current technologies and practices, with expanded coverage of SIEM, SOAR, SOC implementation, cloud security, and cryptography uses and protections. It includes hands-on labs and exercises to help readers practice concepts directly. Aligned with the NIST NICE Framework and NSA CAE knowledge units, this edition is well-suited for IT, networking, information systems, and cybersecurity programs. Features and Benefits:-Rewritten to seamlessly integrate baseline network technologies with new tools for a complete, up-to-date security resource -Offers expanded coverage of SIEM, SOAR, SOC implementation, cloud security, and cryptography uses and protections -Includes step-by-step, hands-on exercises that help readers apply concepts and build a strong, practical understanding -Aligns to NIST NICE Framework v2.0.0 work roles and fully covers NSA CAE Knowledge Units (KUs) for curriculum alignment -Provides vendor-neutral, real-world examples to help demonstrate application across devices, systems, and network setups -Instructor resources include: Test Bank, PowerPoint Slides, Sample Syllabi, Instructor Manual, Answers to Labs, and more -Available with updated cybersecurity Cloud Labs, which provide realistic, hands-on practice that aligns with course content