Part VI: IPv4 Services
So far, this book has shown the basics for building IPv4 networks using routers, switches, Ethernet LANs, and serial links. Part VI completes this book’s topics on IPv4 networks by looking at a couple of services that help secure enterprise networks as well as create useful addressing options when connecting to the Internet.
Chapters 22 and 23 discuss the basics and more advanced features of IPv4 access control lists (ACL). ACLs are IPv4 packet filters that can be programmed to look at IPv4 packet headers, make choices, and either allow a packet through or discard the packet. Along the way, Chapter 23 also discusses some other network security topics in addition to ACLs. Chapter 24, the last chapter in this part, discusses ...
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