This book aims to explore firewalls in the context of anti-virus software, intrusion detection systems, and other tools, providing readers with a solid, in-depth introduction to firewalls that focuses on both managerial and technical aspects of security. Coverage includes packet filtering, authentication, proxy servers, encryption, bastion hosts, virtual private networks (VPNs), log file maintenance, and intrusion detection systems. * Coverage includes packet filtering, authentication, proxy servers, encryption, bastion hosts, virtual private networks (VPNs), log file maintenance, and intrusion detection systems* Exercises encourage readers to research, analyze, and write responses to questions thatare intended to reinforce learning objectives, enhancing comprehension Table Of 1 . Introduction to Information Security 2. An Introduction to Networking 3. Security Policies, Standards, and Planning 4 . Finding Network Vulnerabilities 5. Firewall Planning and Design 6 .