Chapter 18. Administering TCP/IP

The core underlying networking protocol of the modern network is Transmission Control Protocol/Internet Protocol (TCP/IP). The key thing to remember about TCP/IP is that it isn’t a single entity. TCP and IP are both protocols, but they are only two of the protocols included in TCP/IP. TCP/IP is really an entire suite of protocols, each with its own specialized area of importance and use.

The predominant version of TCP/IP, used by virtually all networks around the world, is version 4, known as IPv4. IPv4 is based on a 32-bit address space, limiting the maximum number of potential unique addresses to 4,294,967,296 (232). While this seems like a lot, the reality ...

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