Network Security Ip Security And Malicious Software

  Do the following review questions: 9.1 Give examples of applications of IPsec. 9.2 What services are provided by IPsec? 9.3 What parameters identify an SA and what parameters characterize the nature of a particular SA? 9.4 What is the difference between transport mode and tunnel mode? 9.5 What is a replay attack? 9.6 Why does ESP include a padding field? 9.7 What are the basic approaches to bundling SAs? 9.8 What are the roles of the Oakley key determination protocol and ISAKMP in IPsec?

  10.1 What are three broad mechanisms that malware can use to propagate? 10.2 What are four broad categories of payloads that malware may carry? 10.3 What are typical phases of operation of a virus or worm? 10.4 What mechanisms can a virus use to conceal itself? 10.5 What is the difference between machine-executable and macro viruses? 10.6 What means can a worm use to access remote systems to propagate? 10.7 What is a “drive-by-download” and how does it differ from a worm? 10.8 What is a “logic bomb”? 10.9 Differentiate among the following: a backdoor, a bot, a keylogger, spyware, and a rootkit? Can they all be present in the same malware? 10.10 List some of the different levels in a system that a rootkit may use. 10.11 Describe some malware countermeasure elements. 10.12 List three places malware mitigation mechanisms may be located. 10.13 Briefly describe the four generations of antivirus software. 10.14 How does behavior-blocking software work? 10.15 What is a distributed denial-of-service system?

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