This book teaches IT professionals how to analyze, manage, and automate their security log files to produce a useful, information that can be used repeatedly to make their networks more efficient and secure using primarily open source tools. Furthermore, the book explains how to script open source reporting tools like Tcpdstats to automatically correlate log files from various network devices to the list of "Top 10". All scripts presented in this book will be available for download from the Syngress Solutions Web site. Almost every operating system, firewalls, routers, switches, intrusion detection systems, mail servers, Web servers, and databases to produce some kind of "log files." Each log is reviewed and analyzed by the system administrator or security professional responsible for a specific part of hardware or software. * Providing turn-key, low-cost, open source solution for system administrators to analyze and evaluate their performance and network security * Dozens of working scripts and tools presented in this book are available for download from the Syngress Web site Solutions.