Network Perimeter Security
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LANs, WANs, WLANs are known as edge networksMay be contained within businesses or homesNeeds to be protected from the rest of the Internet!Why firewall?Encryption?Cannot stop malicious packets from getting into an edge networkAuthentication?Can determine whether an incoming IP packet comes from a trusted userHowever, not all host computers have resources to run authentication algorithmsHost computers managed by different users with different skill levels.
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Network Perimeter Security
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Network Perimeter Security
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