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CCNA Security Exam Cram (Exam IINS 640-553) by Eric L. Stewart

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Introducing Endpoint Security

Perhaps a bit of history is in order.... When TCP/IP was but a baby, there were two different types of devices with IP addresses, as follows:

Image    End Systems. An end system is essentially to a network what an end user is to computing. An end system is a device that you connect to a network but does not comprise a network device. PC workstations, IP printers, network servers, VoIP phones, VoIP gateways, and so on are considered end systems.

Image    Intermediate Systems. Perhaps you recognize intermediate systems ...

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