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The Illustrated Network, 2nd Edition by Walter Goralski

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Chapter 31

Network Address Translation

Abstract

In this chapter, you will learn how NAT, originally used to address the shortage of IPv4 addresses, is now used to conceal public IPv4 addresses. We’ll talk about the advantages and disadvantages of using NAT for this purpose.

You will learn that there are four types of NAT and find that using NAT for security is not the best use of NAT. We’ll also configure NAT and PAT (NAPT) and see how and where the IPv4 addresses on the Illustrated Network are translated.

Keywords

NAT; PAT; IPv4 address; DSL routers; ICMP message; LAN1; FTP servers

What You Will Learn

In this chapter, you will learn how NAT, originally used to address the shortage of IPv4 addresses, is now used to conceal public IPv4 addresses. We’ll ...

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