OSI Model Security Memo

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David O


Date added:

August 15, 2016








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2 / 402


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For each layer, there are different types of security to protect the network at that layer. The physical layer is the actual medium in which the data travels. This is usually a wire, hub, or over the air. The physical layer can be secured by protecting access to network cables and ports. Data transmitted over fiber optics is much harder to intercept than data being transmitted over copper wire...
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Security for the data link layer can be accomplished with port security, MAC address filtering, and wireless encryption. The network layer is the layer that most people think of when it comes to network security. Network firewalls operate by blocking IP addresses which are network layer characteristics...
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