This comprehensive book teaches students and professionals who have no prior knowledge of TCP/IP everything they need to know about the subject. It uses many figures to make technical concepts easy to grasp, as well as numerous examples, which help tie the material to the real world. The second edition has been fully updated to include all the recent technology changes in the field. Many new chapters have been added such as Mobile IP, Multimedia and Internet, Network Security, and IP over ATM. Additionally, out-of-date material has been overhauled to reflect recent changes in technology.