Internetworking With TCP/IP - Volume I; Principles, Protocols and Architecture Douglas E. Comer Prentice Hall 1991 pp. 547 [ computer science ] An introduction to the internal workings of the Internet: everything from ARP through routing protocols to specifications for mail headers. There is a lot in this book, but it is very clearly written and doesn't assume any prior knowledge of networking. I would recommend this to any internet user who was interested in how the the thing actually works. It's not light reading, but it avoids unnecessary detail and sticks to the essentials, with summaries of key points and lots of diagrams. Danny Yee (danny@cs.su.oz.au) 8/4/92