Chapter 2. Delivering the Data

In Chapter 1, we touched on the basic architecture and design of the TCP/IP protocols. From that discussion, we know that TCP/IP is a hierarchy of four layers. In this chapter, we explore in finer detail how data moves between the protocol layers and the systems on the network. We examine the structure of Internet addresses, including how addresses route data to its final destination and how address structure is locally redefined to create subnets. We also look at the protocol and port numbers used to deliver data to the correct applications. These additional details move us from an overview of TCP/IP to the specific implementation issues that affect your system's configuration.



     
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