List of Figures

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Figure 1-1. Ethernet Network Attachment

Figure 1-2. Serial Line Network

Figure 2-1. Heterogeneous Network With Wide-Area Connections

Figure 2-2. The Format of Internet Protocol (IP) Addresses

Figure 2-3. Subnetted Class B Address

Figure 3-1. A Network With Multicast Routers.

Figure 3-2. A Tunnel Between Networks A and C

Figure 6-1. Partial View of Domain Name Space

Figure 6-2. Example BIND Configuration

Figure 8-1. Layers of TCP/IP Mail Software

Figure 8-2. sendmail System Structure

Figure 8-3. sendmail Configuration Environment (Fictitious)

Figure B-1. Semantics of Rewriting Rule Sets