Principles of Computer Security, Fourth Edition

Principles of Computer Security, Fourth Edition

Author: Wm. Arthur Conklin

Publisher: McGraw Hill Professional

Published: 2016-01-01

Total Pages: 850

ISBN-13: 0071836012

DOWNLOAD EBOOK

Written by leading information security educators, this fully revised, full-color computer security textbook covers CompTIA’s fastest-growing credential, CompTIA Security+. Principles of Computer Security, Fourth Edition is a student-tested, introductory computer security textbook that provides comprehensive coverage of computer and network security fundamentals in an engaging and dynamic full-color design. In addition to teaching key computer security concepts, the textbook also fully prepares you for CompTIA Security+ exam SY0-401 with 100% coverage of all exam objectives. Each chapter begins with a list of topics to be covered and features sidebar exam and tech tips, a chapter summary, and an end-of-chapter assessment section that includes key term, multiple choice, and essay quizzes as well as lab projects. Electronic content includes CompTIA Security+ practice exam questions and a PDF copy of the book. Key features: CompTIA Approved Quality Content (CAQC) Electronic content features two simulated practice exams in the Total Tester exam engine and a PDF eBook Supplemented by Principles of Computer Security Lab Manual, Fourth Edition, available separately White and Conklin are two of the most well-respected computer security educators in higher education Instructor resource materials for adopting instructors include: Instructor Manual, PowerPoint slides featuring artwork from the book, and a test bank of questions for use as quizzes or exams Answers to the end of chapter sections are not included in the book and are only available to adopting instructors Learn how to: Ensure operational, organizational, and physical security Use cryptography and public key infrastructures (PKIs) Secure remote access, wireless networks, and virtual private networks (VPNs) Authenticate users and lock down mobile devices Harden network devices, operating systems, and applications Prevent network attacks, such as denial of service, spoofing, hijacking, and password guessing Combat viruses, worms, Trojan horses, and rootkits Manage e-mail, instant messaging, and web security Explore secure software development requirements Implement disaster recovery and business continuity measures Handle computer forensics and incident response Understand legal, ethical, and privacy issues


Book Synopsis Principles of Computer Security, Fourth Edition by : Wm. Arthur Conklin

Download or read book Principles of Computer Security, Fourth Edition written by Wm. Arthur Conklin and published by McGraw Hill Professional. This book was released on 2016-01-01 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by leading information security educators, this fully revised, full-color computer security textbook covers CompTIA’s fastest-growing credential, CompTIA Security+. Principles of Computer Security, Fourth Edition is a student-tested, introductory computer security textbook that provides comprehensive coverage of computer and network security fundamentals in an engaging and dynamic full-color design. In addition to teaching key computer security concepts, the textbook also fully prepares you for CompTIA Security+ exam SY0-401 with 100% coverage of all exam objectives. Each chapter begins with a list of topics to be covered and features sidebar exam and tech tips, a chapter summary, and an end-of-chapter assessment section that includes key term, multiple choice, and essay quizzes as well as lab projects. Electronic content includes CompTIA Security+ practice exam questions and a PDF copy of the book. Key features: CompTIA Approved Quality Content (CAQC) Electronic content features two simulated practice exams in the Total Tester exam engine and a PDF eBook Supplemented by Principles of Computer Security Lab Manual, Fourth Edition, available separately White and Conklin are two of the most well-respected computer security educators in higher education Instructor resource materials for adopting instructors include: Instructor Manual, PowerPoint slides featuring artwork from the book, and a test bank of questions for use as quizzes or exams Answers to the end of chapter sections are not included in the book and are only available to adopting instructors Learn how to: Ensure operational, organizational, and physical security Use cryptography and public key infrastructures (PKIs) Secure remote access, wireless networks, and virtual private networks (VPNs) Authenticate users and lock down mobile devices Harden network devices, operating systems, and applications Prevent network attacks, such as denial of service, spoofing, hijacking, and password guessing Combat viruses, worms, Trojan horses, and rootkits Manage e-mail, instant messaging, and web security Explore secure software development requirements Implement disaster recovery and business continuity measures Handle computer forensics and incident response Understand legal, ethical, and privacy issues

Computer Security

Computer Security

Author: William Stallings

Publisher: Pearson Higher Ed

Published: 2012-02-28

Total Pages: 817

ISBN-13: 0133072630

DOWNLOAD EBOOK

This is the eBook of the printed book and may not include any media, website access codes, or print supplements that may come packaged with the bound book. Computer Security: Principles and Practice, 2e, is ideal for courses in Computer/Network Security. In recent years, the need for education in computer security and related topics has grown dramatically – and is essential for anyone studying Computer Science or Computer Engineering. This is the only text available to provide integrated, comprehensive, up-to-date coverage of the broad range of topics in this subject. In addition to an extensive pedagogical program, the book provides unparalleled support for both research and modeling projects, giving students a broader perspective. The Text and Academic Authors Association named Computer Security: Principles and Practice, 1e, the winner of the Textbook Excellence Award for the best Computer Science textbook of 2008.


Book Synopsis Computer Security by : William Stallings

Download or read book Computer Security written by William Stallings and published by Pearson Higher Ed. This book was released on 2012-02-28 with total page 817 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the eBook of the printed book and may not include any media, website access codes, or print supplements that may come packaged with the bound book. Computer Security: Principles and Practice, 2e, is ideal for courses in Computer/Network Security. In recent years, the need for education in computer security and related topics has grown dramatically – and is essential for anyone studying Computer Science or Computer Engineering. This is the only text available to provide integrated, comprehensive, up-to-date coverage of the broad range of topics in this subject. In addition to an extensive pedagogical program, the book provides unparalleled support for both research and modeling projects, giving students a broader perspective. The Text and Academic Authors Association named Computer Security: Principles and Practice, 1e, the winner of the Textbook Excellence Award for the best Computer Science textbook of 2008.

Principles of Computer Security: CompTIA Security+ and Beyond, Sixth Edition (Exam SY0-601)

Principles of Computer Security: CompTIA Security+ and Beyond, Sixth Edition (Exam SY0-601)

Author: Wm. Arthur Conklin

Publisher: McGraw Hill Professional

Published: 2021-07-29

Total Pages: 1074

ISBN-13: 1260474321

DOWNLOAD EBOOK

Fully updated computer security essentials—mapped to the CompTIA Security+ SY0-601 exam Save 10% on any CompTIA exam voucher! Coupon code inside. Learn IT security fundamentals while getting complete coverage of the objectives for the latest release of CompTIA Security+ certification exam SY0-601. This thoroughly revised, full-color textbook covers how to secure hardware, systems, and software. It addresses new threats and cloud environments, and provides additional coverage of governance, risk, compliance, and much more. Written by a team of highly respected security educators, Principles of Computer Security: CompTIA Security+TM and Beyond, Sixth Edition (Exam SY0-601) will help you become a CompTIA-certified computer security expert while also preparing you for a successful career. Find out how to: Ensure operational, organizational, and physical security Use cryptography and public key infrastructures (PKIs) Secure remote access, wireless networks, and virtual private networks (VPNs) Authenticate users and lock down mobile devices Harden network devices, operating systems, and applications Prevent network attacks, such as denial of service, spoofing, hijacking, and password guessing Combat viruses, worms, Trojan horses, and rootkits Manage e-mail, instant messaging, and web security Explore secure software development requirements Implement disaster recovery and business continuity measures Handle computer forensics and incident response Understand legal, ethical, and privacy issues Online content features: Test engine that provides full-length practice exams and customized quizzes by chapter or exam objective Each chapter includes: Learning objectives Real-world examples Try This! and Cross Check exercises Tech Tips, Notes, and Warnings Exam Tips End-of-chapter quizzes and lab projects


Book Synopsis Principles of Computer Security: CompTIA Security+ and Beyond, Sixth Edition (Exam SY0-601) by : Wm. Arthur Conklin

Download or read book Principles of Computer Security: CompTIA Security+ and Beyond, Sixth Edition (Exam SY0-601) written by Wm. Arthur Conklin and published by McGraw Hill Professional. This book was released on 2021-07-29 with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated computer security essentials—mapped to the CompTIA Security+ SY0-601 exam Save 10% on any CompTIA exam voucher! Coupon code inside. Learn IT security fundamentals while getting complete coverage of the objectives for the latest release of CompTIA Security+ certification exam SY0-601. This thoroughly revised, full-color textbook covers how to secure hardware, systems, and software. It addresses new threats and cloud environments, and provides additional coverage of governance, risk, compliance, and much more. Written by a team of highly respected security educators, Principles of Computer Security: CompTIA Security+TM and Beyond, Sixth Edition (Exam SY0-601) will help you become a CompTIA-certified computer security expert while also preparing you for a successful career. Find out how to: Ensure operational, organizational, and physical security Use cryptography and public key infrastructures (PKIs) Secure remote access, wireless networks, and virtual private networks (VPNs) Authenticate users and lock down mobile devices Harden network devices, operating systems, and applications Prevent network attacks, such as denial of service, spoofing, hijacking, and password guessing Combat viruses, worms, Trojan horses, and rootkits Manage e-mail, instant messaging, and web security Explore secure software development requirements Implement disaster recovery and business continuity measures Handle computer forensics and incident response Understand legal, ethical, and privacy issues Online content features: Test engine that provides full-length practice exams and customized quizzes by chapter or exam objective Each chapter includes: Learning objectives Real-world examples Try This! and Cross Check exercises Tech Tips, Notes, and Warnings Exam Tips End-of-chapter quizzes and lab projects

Handbook of Computer Networks and Cyber Security

Handbook of Computer Networks and Cyber Security

Author: Brij B. Gupta

Publisher: Springer Nature

Published: 2019-12-31

Total Pages: 957

ISBN-13: 3030222772

DOWNLOAD EBOOK

This handbook introduces the basic principles and fundamentals of cyber security towards establishing an understanding of how to protect computers from hackers and adversaries. The highly informative subject matter of this handbook, includes various concepts, models, and terminologies along with examples and illustrations to demonstrate substantial technical details of the field. It motivates the readers to exercise better protection and defense mechanisms to deal with attackers and mitigate the situation. This handbook also outlines some of the exciting areas of future research where the existing approaches can be implemented. Exponential increase in the use of computers as a means of storing and retrieving security-intensive information, requires placement of adequate security measures to safeguard the entire computing and communication scenario. With the advent of Internet and its underlying technologies, information security aspects are becoming a prime concern towards protecting the networks and the cyber ecosystem from variety of threats, which is illustrated in this handbook. This handbook primarily targets professionals in security, privacy and trust to use and improve the reliability of businesses in a distributed manner, as well as computer scientists and software developers, who are seeking to carry out research and develop software in information and cyber security. Researchers and advanced-level students in computer science will also benefit from this reference.


Book Synopsis Handbook of Computer Networks and Cyber Security by : Brij B. Gupta

Download or read book Handbook of Computer Networks and Cyber Security written by Brij B. Gupta and published by Springer Nature. This book was released on 2019-12-31 with total page 957 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook introduces the basic principles and fundamentals of cyber security towards establishing an understanding of how to protect computers from hackers and adversaries. The highly informative subject matter of this handbook, includes various concepts, models, and terminologies along with examples and illustrations to demonstrate substantial technical details of the field. It motivates the readers to exercise better protection and defense mechanisms to deal with attackers and mitigate the situation. This handbook also outlines some of the exciting areas of future research where the existing approaches can be implemented. Exponential increase in the use of computers as a means of storing and retrieving security-intensive information, requires placement of adequate security measures to safeguard the entire computing and communication scenario. With the advent of Internet and its underlying technologies, information security aspects are becoming a prime concern towards protecting the networks and the cyber ecosystem from variety of threats, which is illustrated in this handbook. This handbook primarily targets professionals in security, privacy and trust to use and improve the reliability of businesses in a distributed manner, as well as computer scientists and software developers, who are seeking to carry out research and develop software in information and cyber security. Researchers and advanced-level students in computer science will also benefit from this reference.

Computer and Cyber Security

Computer and Cyber Security

Author: Brij B. Gupta

Publisher: CRC Press

Published: 2018-11-19

Total Pages: 865

ISBN-13: 0429756305

DOWNLOAD EBOOK

This is a monumental reference for the theory and practice of computer security. Comprehensive in scope, this text covers applied and practical elements, theory, and the reasons for the design of applications and security techniques. It covers both the management and the engineering issues of computer security. It provides excellent examples of ideas and mechanisms that demonstrate how disparate techniques and principles are combined in widely-used systems. This book is acclaimed for its scope, clear and lucid writing, and its combination of formal and theoretical aspects with real systems, technologies, techniques, and policies.


Book Synopsis Computer and Cyber Security by : Brij B. Gupta

Download or read book Computer and Cyber Security written by Brij B. Gupta and published by CRC Press. This book was released on 2018-11-19 with total page 865 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a monumental reference for the theory and practice of computer security. Comprehensive in scope, this text covers applied and practical elements, theory, and the reasons for the design of applications and security techniques. It covers both the management and the engineering issues of computer security. It provides excellent examples of ideas and mechanisms that demonstrate how disparate techniques and principles are combined in widely-used systems. This book is acclaimed for its scope, clear and lucid writing, and its combination of formal and theoretical aspects with real systems, technologies, techniques, and policies.

Cyber Security Education

Cyber Security Education

Author: Greg Austin

Publisher: Routledge

Published: 2020-07-30

Total Pages: 202

ISBN-13: 1000168026

DOWNLOAD EBOOK

This book investigates the goals and policy aspects of cyber security education in the light of escalating technical, social and geopolitical challenges. The past ten years have seen a tectonic shift in the significance of cyber security education. Once the preserve of small groups of dedicated educators and industry professionals, the subject is now on the frontlines of geopolitical confrontation and business strategy. Global shortages of talent have created pressures on corporate and national policy for workforce development. Cyber Security Education offers an updated approach to the subject as we enter the next decade of technological disruption and political threats. The contributors include scholars and education practitioners from leading research and education centres in Europe, North America and Australia. This book provides essential reference points for education policy on the new social terrain of security in cyberspace and aims to reposition global debates on what education for security in cyberspace can and should mean. This book will be of interest to students of cyber security, cyber education, international security and public policy generally, as well as practitioners and policy-makers.


Book Synopsis Cyber Security Education by : Greg Austin

Download or read book Cyber Security Education written by Greg Austin and published by Routledge. This book was released on 2020-07-30 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book investigates the goals and policy aspects of cyber security education in the light of escalating technical, social and geopolitical challenges. The past ten years have seen a tectonic shift in the significance of cyber security education. Once the preserve of small groups of dedicated educators and industry professionals, the subject is now on the frontlines of geopolitical confrontation and business strategy. Global shortages of talent have created pressures on corporate and national policy for workforce development. Cyber Security Education offers an updated approach to the subject as we enter the next decade of technological disruption and political threats. The contributors include scholars and education practitioners from leading research and education centres in Europe, North America and Australia. This book provides essential reference points for education policy on the new social terrain of security in cyberspace and aims to reposition global debates on what education for security in cyberspace can and should mean. This book will be of interest to students of cyber security, cyber education, international security and public policy generally, as well as practitioners and policy-makers.

Computer Security

Computer Security

Author: Matt Bishop

Publisher: Addison-Wesley Professional

Published: 2018-11-27

Total Pages: 2104

ISBN-13: 0134097173

DOWNLOAD EBOOK

The Comprehensive Guide to Computer Security, Extensively Revised with Newer Technologies, Methods, Ideas, and Examples In this updated guide, University of California at Davis Computer Security Laboratory co-director Matt Bishop offers clear, rigorous, and thorough coverage of modern computer security. Reflecting dramatic growth in the quantity, complexity, and consequences of security incidents, Computer Security, Second Edition, links core principles with technologies, methodologies, and ideas that have emerged since the first edition’s publication. Writing for advanced undergraduates, graduate students, and IT professionals, Bishop covers foundational issues, policies, cryptography, systems design, assurance, and much more. He thoroughly addresses malware, vulnerability analysis, auditing, intrusion detection, and best-practice responses to attacks. In addition to new examples throughout, Bishop presents entirely new chapters on availability policy models and attack analysis. Understand computer security goals, problems, and challenges, and the deep links between theory and practice Learn how computer scientists seek to prove whether systems are secure Define security policies for confidentiality, integrity, availability, and more Analyze policies to reflect core questions of trust, and use them to constrain operations and change Implement cryptography as one component of a wider computer and network security strategy Use system-oriented techniques to establish effective security mechanisms, defining who can act and what they can do Set appropriate security goals for a system or product, and ascertain how well it meets them Recognize program flaws and malicious logic, and detect attackers seeking to exploit them This is both a comprehensive text, explaining the most fundamental and pervasive aspects of the field, and a detailed reference. It will help you align security concepts with realistic policies, successfully implement your policies, and thoughtfully manage the trade-offs that inevitably arise. Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.


Book Synopsis Computer Security by : Matt Bishop

Download or read book Computer Security written by Matt Bishop and published by Addison-Wesley Professional. This book was released on 2018-11-27 with total page 2104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Comprehensive Guide to Computer Security, Extensively Revised with Newer Technologies, Methods, Ideas, and Examples In this updated guide, University of California at Davis Computer Security Laboratory co-director Matt Bishop offers clear, rigorous, and thorough coverage of modern computer security. Reflecting dramatic growth in the quantity, complexity, and consequences of security incidents, Computer Security, Second Edition, links core principles with technologies, methodologies, and ideas that have emerged since the first edition’s publication. Writing for advanced undergraduates, graduate students, and IT professionals, Bishop covers foundational issues, policies, cryptography, systems design, assurance, and much more. He thoroughly addresses malware, vulnerability analysis, auditing, intrusion detection, and best-practice responses to attacks. In addition to new examples throughout, Bishop presents entirely new chapters on availability policy models and attack analysis. Understand computer security goals, problems, and challenges, and the deep links between theory and practice Learn how computer scientists seek to prove whether systems are secure Define security policies for confidentiality, integrity, availability, and more Analyze policies to reflect core questions of trust, and use them to constrain operations and change Implement cryptography as one component of a wider computer and network security strategy Use system-oriented techniques to establish effective security mechanisms, defining who can act and what they can do Set appropriate security goals for a system or product, and ascertain how well it meets them Recognize program flaws and malicious logic, and detect attackers seeking to exploit them This is both a comprehensive text, explaining the most fundamental and pervasive aspects of the field, and a detailed reference. It will help you align security concepts with realistic policies, successfully implement your policies, and thoughtfully manage the trade-offs that inevitably arise. Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

Principles of Cybersecurity

Principles of Cybersecurity

Author: Linda K Lavender

Publisher:

Published: 2024-01-26

Total Pages: 0

ISBN-13:

DOWNLOAD EBOOK

This Laboratory Manual complements the Principles of Cybersecurity textbook and classroom-related studies. The laboratory activities in this manual help develop the valuable skills needed to pursue a career in the cybersecurity field. Laboratory activities should be an essential part of your training. They link the concepts presented in the textbook to hands-on performance. You should not expect to learn cybersecurity skills only through the textbook, lectures, and demonstrations. The activities in this manual correlate to the textbook chapters. Each chapter has at least four laboratory activities. Each laboratory activity begins with a brief overview of the activity. In some cases, this overview also sets up a scenario that will be used for the activity. Following the overview are learning outcomes. These are the objectives to meet by completing the activity. After the learning outcomes is a list of the materials needed for the activity. Some activities can be completed with basic Internet access and word-processing software. Other activities are more involved and require a virtual machine and downloaded freeware or open-source software. The list of materials will indicate what is needed so you can be prepared prior to starting the activity.


Book Synopsis Principles of Cybersecurity by : Linda K Lavender

Download or read book Principles of Cybersecurity written by Linda K Lavender and published by . This book was released on 2024-01-26 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Laboratory Manual complements the Principles of Cybersecurity textbook and classroom-related studies. The laboratory activities in this manual help develop the valuable skills needed to pursue a career in the cybersecurity field. Laboratory activities should be an essential part of your training. They link the concepts presented in the textbook to hands-on performance. You should not expect to learn cybersecurity skills only through the textbook, lectures, and demonstrations. The activities in this manual correlate to the textbook chapters. Each chapter has at least four laboratory activities. Each laboratory activity begins with a brief overview of the activity. In some cases, this overview also sets up a scenario that will be used for the activity. Following the overview are learning outcomes. These are the objectives to meet by completing the activity. After the learning outcomes is a list of the materials needed for the activity. Some activities can be completed with basic Internet access and word-processing software. Other activities are more involved and require a virtual machine and downloaded freeware or open-source software. The list of materials will indicate what is needed so you can be prepared prior to starting the activity.

Principles of Computer Security Lab Manual, Fourth Edition

Principles of Computer Security Lab Manual, Fourth Edition

Author: Vincent J. Nestler

Publisher: McGraw Hill Professional

Published: 2014-10-31

Total Pages: 385

ISBN-13: 007183656X

DOWNLOAD EBOOK

Practice the Computer Security Skills You Need to Succeed! 40+ lab exercises challenge you to solve problems based on realistic case studies Step-by-step scenarios require you to think critically Lab analysis tests measure your understanding of lab results Key term quizzes help build your vocabulary Labs can be performed on a Windows, Linux, or Mac platform with the use of virtual machines In this Lab Manual, you'll practice Configuring workstation network connectivity Analyzing network communication Establishing secure network application communication using TCP/IP protocols Penetration testing with Nmap, metasploit, password cracking, Cobalt Strike, and other tools Defending against network application attacks, including SQL injection, web browser exploits, and email attacks Combatting Trojans, man-in-the-middle attacks, and steganography Hardening a host computer, using antivirus applications, and configuring firewalls Securing network communications with encryption, secure shell (SSH), secure copy (SCP), certificates, SSL, and IPsec Preparing for and detecting attacks Backing up and restoring data Handling digital forensics and incident response Instructor resources available: This lab manual supplements the textbook Principles of Computer Security, Fourth Edition, which is available separately Virtual machine files Solutions to the labs are not included in the book and are only available to adopting instructors


Book Synopsis Principles of Computer Security Lab Manual, Fourth Edition by : Vincent J. Nestler

Download or read book Principles of Computer Security Lab Manual, Fourth Edition written by Vincent J. Nestler and published by McGraw Hill Professional. This book was released on 2014-10-31 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practice the Computer Security Skills You Need to Succeed! 40+ lab exercises challenge you to solve problems based on realistic case studies Step-by-step scenarios require you to think critically Lab analysis tests measure your understanding of lab results Key term quizzes help build your vocabulary Labs can be performed on a Windows, Linux, or Mac platform with the use of virtual machines In this Lab Manual, you'll practice Configuring workstation network connectivity Analyzing network communication Establishing secure network application communication using TCP/IP protocols Penetration testing with Nmap, metasploit, password cracking, Cobalt Strike, and other tools Defending against network application attacks, including SQL injection, web browser exploits, and email attacks Combatting Trojans, man-in-the-middle attacks, and steganography Hardening a host computer, using antivirus applications, and configuring firewalls Securing network communications with encryption, secure shell (SSH), secure copy (SCP), certificates, SSL, and IPsec Preparing for and detecting attacks Backing up and restoring data Handling digital forensics and incident response Instructor resources available: This lab manual supplements the textbook Principles of Computer Security, Fourth Edition, which is available separately Virtual machine files Solutions to the labs are not included in the book and are only available to adopting instructors

Computer Communications Security

Computer Communications Security

Author: Warwick Ford

Publisher: Prentice Hall

Published: 1994

Total Pages: 536

ISBN-13:

DOWNLOAD EBOOK

For anyone required to design, develop, implement, market, or procure products based on specific network security standards, this book identifies and explains all the modern standardized methods of achieving network security in both TCP/IP and OSI environments--with a focus on inter-system, as opposed to intra-system, security functions.


Book Synopsis Computer Communications Security by : Warwick Ford

Download or read book Computer Communications Security written by Warwick Ford and published by Prentice Hall. This book was released on 1994 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: For anyone required to design, develop, implement, market, or procure products based on specific network security standards, this book identifies and explains all the modern standardized methods of achieving network security in both TCP/IP and OSI environments--with a focus on inter-system, as opposed to intra-system, security functions.