The Need for Network Security

In the distant past, networks were designed to be open, and network security was largely a matter of physical security. As networks become increasingly interconnected and data flows more freely, security services become critical. In the commercial world, connectivity is no longer optional; the possible risks of providing connectivity do not outweigh its benefits, including revenue generation. Therefore, security services must provide adequate protection to allow organizations to conduct business in a relatively open environment.

Secure networks are required not only to defend against attacks and prevent unauthorized access; legislation, industry regulations, and company policies might also require secure networks to keep data private and ensure that it is not misused.

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