Chapter7.Private Addresses and NAT

Chapter 7. Private Addresses and NAT

Two of the more-significant technologies in IPv4's evolution were created separately but were clearly made for each other. These technologies are private addresses and Network Address Translation (NAT).

This chapter explores the private address space that was reserved by the IETF in RFC 1597 and then affirmed in RFC 1918. This chapter then looks at how NAT makes private addresses practical, useful, and, in some situations, superior to directly registered IP addresses.