Network Flow Analysis

Michael W. Lucas (Autor)

Buch | Softcover

224 Seiten

2010
No Starch Press,US (Verlag)
978-1-59327-203-6 (ISBN)

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You know that servers have log files and performance measuring tools and that traditional network devices have LEDs that blink when a port does something. You may have tools that tell you how busy an interface is, but mostly a network device is a black box. Network Flow Analysis opens that black box, demonstrating how to use industry-standard software and your existing hardware to assess, analyze, and debug your network. Unlike packet sniffers that require you to reproduce network problems in order to analyze them, flow analysis lets you turn back time as you analyze your network. You'll learn how to use open source software to build a flow-based network awareness system and how to use network analysis and auditing to address problems and improve network reliability. You'll also learn how to use a flow analysis system; collect flow records; view, filter, and report flows; present flow records graphically; and use flow records to proactively improve your network. Network Flow Analysis

; Dedication; ACKNOWLEDGMENTS; INTRODUCTION; Network Administration and Network Management; Network Management Tools; Enough Griping: What's the Solution?; Flow-Tools and Its Prerequisites; Flows and This Book; Chapter 1: FLOW FUNDAMENTALS; 1.1 What Is a Flow?; 1.2 Flow System Architecture; 1.3 The History of Network Flow; 1.4 Flows in the Real World; 1.5 Flow Export and Timeouts; 1.6 Packet-Sampled Flows; Chapter 2: COLLECTORS AND SENSORS; 2.1 Collector Considerations; 2.2 Sensor Considerations; 2.3 Implementing the Collector; 2.4 Installing Flow-tools; 2.5 Running flow-capture; 2.6 How Many Collectors?; 2.7 Collector Log Files; 2.8 Collector Troubleshooting; 2.9 Configuring Hardware Flow Sensors; 2.10 Configuring Software Flow Sensors; 2.11 The Sensor: softflowd; Chapter 3: VIEWING FLOWS; 3.1 Using flow-print; 3.2 Setting flow-print Formats with -f; 3.3 TCP Control Bits and Flow Records; 3.4 ICMP Types and Codes and Flow Records; Chapter 4: FILTERING FLOWS; 4.1 Filter Fundamentals; 4.2 Useful Primitives; 4.3 Filter Match Statements; 4.4 Using Multiple Filters; 4.5 Logical Operators in Filter Definitions; 4.6 Filters and Variables; Chapter 5: REPORTING AND FOLLOW-UP ANALYSIS; 5.1 Default Report; 5.2 Modifying the Default Report; 5.3 Analyzing Individual Flows from Reports; 5.4 Other Report Customizations; 5.5 Useful Report Types; 5.6 Customizing Reports; Chapter 6: PERL, FLOWSCAN, AND CFLOW.PM; 6.1 Installing Cflow.pm; 6.2 flowdumper and Full Flow Information; 6.3 FlowScan and CUFlow; 6.4 FlowScan Prerequisites; 6.5 Installing FlowScan and CUFlow; 6.6 Flow Record Splitting and CUFlow; 6.7 Using Cflow.pm; Chapter 7: FLOWVIEWER; 7.1 FlowTracker and FlowGrapher vs. CUFlow; 7.2 FlowViewer Security; 7.3 Installing FlowViewer; 7.4 Configuring FlowViewer; 7.5 Using FlowViewer; 7.6 FlowGrapher; 7.7 FlowTracker; 7.8 Interface Names and FlowViewer; Chapter 8: AD HOC FLOW VISUALIZATION; 8.1 gnuplot 101; 8.2 Time-Series Example: Bandwidth; 8.3 Automating Graph Production; 8.4 Comparison Graphs; Chapter 9: EDGES AND ANALYSIS; 9.1 NetFlow v9; 9.2 sFlow; 9.3 Problem Solving with Flow Data; 9.4 Afterword; UPDATES;

Verlagsort	San Francisco
Sprache	englisch
Maße	178 x 234 mm
Themenwelt	Mathematik / Informatik ► Informatik ► Netzwerke
ISBN-10	1-59327-203-0 / 1593272030
ISBN-13	978-1-59327-203-6 / 9781593272036
Zustand	Neuware