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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?