A core area network (CAN) is an island network that exists within both LANs and WANs offering both collaboration and hard security within the domain. The configuration of a CAN structure is done using existing hard and soft technologies. And depends more upon configuration and architecture than do some new technologies. The use of soft layering is important, but CANs can be configured without them.
A CAN environment is set up using traditional IP and subnet partitioning with forward and reverse lookups, and port redirection rather than software solutions such as active directory. A core is configured as a single entity network, and then additional cores are added, both as an Island LAN, then with links to other cores by IP configuration. Access is controlled by traditional NAC packages.
An advantage of CANs is that the network architect and engineer have greater control over network security and configuration isolation rather than software isolation, leaving the core less vulnerable to attack.
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