The technical editing team for this book and its companion volume was fantastic! Not only did they find where I had simply written the wrong technical facts, but they also helped me find new, more interesting, and clearer ways to convey certain facts about networking. Lynn was particular helpful with comments that helped keep small sections in line with the overall theme of the chapter—a skill I’m sure he developed as a result of having written books himself. Martin helped a lot with technical detail and erspectives from what customers see every day today. And Elan excelled in noticing both the small nit-picky errors and the significant technical problems. (And that’s not an insult—every technical author loves help in finding the small problems!) Together, these three gentlemen formed a great team, with complementary skills. Thanks so much, guys!