Practical TCP/IP and Ethernet Networking for Industry

14

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When you have completed study of this chapter you should be able to:

• Explain the security problem

• Define the ways of controlling access to a network

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Although people tend to refer to the ‘Internet’ as one global entity, there are in fact three

clearly defined subsets of this global network. Four, in fact, if one wishes to include the

so-called ‘community network’. It just depends on where the conceptual boundaries are

drawn.

• In the center is the in-house corporate ‘intranet’, primarily for the benefit of

the people within the organization

• The intranet is surrounded ...