Objectives 3.5 Identify the purpose, benefits, and characteristics of using a firewall 3.6 Identify the purpose, benefits, and characteristics of using a proxy service 3.7 Given a connectivity scenario, determine the impact on network functionality of a particular security implementation (for example, port blocking/filtering, authentication, and encryption) 3.9 Identify the main characteristics and purpose of extranets and intranets What you need to know
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