tailieunhanh - Computer Networking: A Top Down Approach Featuring the Internet - Chapter 8 Network Security

Tham khảo bài thuyết trình 'computer networking: a top down approach featuring the internet - chapter 8 network security', công nghệ thông tin, quản trị mạng phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Chapter 8 Network Security A note on the use of these ppt slides: We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following: If you use these slides (., in a class) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!) If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material. Thanks and enjoy! JFK/KWR All material copyright 1996-2006 Kurose and . Ross, All Rights Reserved Computer Networking: A Top Down Approach Featuring the Internet, 3rd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2004. 8- Chapter 8: Network Security Chapter goals: understand principles of network security: cryptography and its many uses beyond “confidentiality” authentication message integrity key distribution security in practice: firewalls security in application, transport, network, link layers 8- Chapter 8 roadmap What is network security? Principles of cryptography Authentication Integrity Key Distribution and certification Access control: firewalls Attacks and counter measures Security in many layers 8- What is network security? Confidentiality: only sender, intended receiver should “understand” message contents sender encrypts message receiver decrypts message Authentication: sender, receiver want to confirm identity of each other Message Integrity: sender, receiver want to ensure message not altered (in transit, or afterwards) without detection Access and Availability: services must be accessible and available to users 8- Friends and enemies: Alice, Bob, Trudy well-known in network security | Chapter 8 Network Security A note on the use of these ppt slides: We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following: If you use these slides (., in a class) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!) If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material. Thanks and enjoy! JFK/KWR All material copyright 1996-2006 Kurose and . Ross, All Rights Reserved Computer Networking: A Top Down Approach Featuring the Internet, 3rd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2004. 8- Chapter 8: Network Security Chapter .