Network perimeter security

Chapter 8 - Network security topologies. Objectives in this chapter: Explain network perimeter’s importance to an organization’s security policies, identify place and role of the demilitarized zone in the network, explain how network address translation is used to help secure networks, spell out the role of tunneling in network security, describe security features of virtual local area networks.

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LANs, WANs, WLANs are known as edge networks May be contained within businesses or homes Needs to be protected from the rest of the Internet! Why firewall? Encryption? Cannot stop malicious packets from getting into an edge network Authentication? Can determine whether an incoming IP packet comes from a trusted user However, not all host computers have resources to run authentication algorithms Host computers managed by different users with different skill levels.

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Network perimeter Perimeter, dịch ra tiếng Việt có nghĩa là "vành đai", tuy nhiên từ perimeter dùng ở đây có nghĩa khác khái niệm "vành đai" một tí Hacking Security Sites part 20

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