Sep 25,2009 by alperen
Encryption can occur at various levels within the network to meet the organization’s specific objectives. Using the Open Systems Interconnection (OSI) or the Transmission Control Protocol/Internet Protocol (TCP/IP) reference model, the encryption can be placed at the data-link layer, the network layer, or the application layer. Figure 9-15 shows a diagram of encryption at each of the layers.
Figure 9-15: Encryption implementation options
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