Network Flow Analysis (Paperback)

Michael W. Lucas

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商品描述

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 will show you how to:

  • Identify network, server, router, and firewall problems before they become critical
  • Find defective and misconfigured software
  • Quickly find virus-spewing machines, even if they're on a different continent
  • Determine whether your problem stems from the network or a server
  • Automatically graph the most useful data

And much more. Stop asking your users to reproduce problems. Network Flow Analysis gives you the tools and real-world examples you need to effectively analyze your network flow data. Now you can determine what the network problem is long before your customers report it, and you can make that silly phone stop ringing.

商品描述(中文翻譯)

你知道伺服器有日誌檔案和性能測量工具,傳統的網路設備則有指示燈在埠有活動時會閃爍。你可能有工具告訴你介面有多忙碌,但大部分網路設備就像是一個黑盒子。《網路流量分析》打開了這個黑盒子,展示如何使用行業標準軟體和現有硬體來評估、分析和除錯你的網路。

與需要你重現網路問題才能分析的封包嗅探器不同,流量分析讓你在分析網路時可以回到過去。你將學習如何使用開源軟體建立基於流量的網路感知系統,以及如何使用網路分析和審計來解決問題並提高網路可靠性。你還將學習如何使用流量分析系統;收集流量記錄;查看、過濾和報告流量;以圖形方式呈現流量記錄;並使用流量記錄主動改善你的網路。《網路流量分析》將教你如何:

- 在問題變得嚴重之前識別網路、伺服器、路由器和防火牆問題
- 找出有缺陷和配置錯誤的軟體
- 快速找到傳播病毒的機器,即使它們在不同的大陸上
- 確定你的問題是來自網路還是伺服器
- 自動繪製最有用的資料

還有更多。不要再要求用戶重現問題了。《網路流量分析》提供了你需要有效分析網路流量資料的工具和實際範例。現在你可以在客戶報告問題之前就確定網路問題所在,讓那些煩人的電話停止響起。