Internet Core Protocols: The Definitive Guide contains all the information system and network administrators need for low-level network debugging. Many network problems can only be debugged by looking at all the bits traveling back and forth on the wire. This guide explains what those bits are and how to interpret them. It thoroughly covers the fundamental protocols in the TCP/IP suite: IP, TCP, UDP, ICMP, ARP (in its many variations), and IGMP. (The companion volume, Internet Application Protocols: The Definitive Guide, provides detailed information about the commonly used application protocols, including HTTP, FTP, DNS, POP3, and many others). This book includes many packet captures, showing you what to look for and how to interpret all the fields. And it covers the the latest developments in real-world IP networking. The CD-ROM contains Shomiti's "Surveyor Lite," a packet analyzer that runs on Win32 systems, plus the original RFCs, for reference. Together, this package includes everything you need to troubleshoot your network.