【導讀】當今時代是飛速發(fā)展的信息時代，計算機與信息處理技術日漸成熟。Inter和計算機網(wǎng)絡技術的蓬勃發(fā)展，網(wǎng)絡安全問題現(xiàn)在已經(jīng)得到普遍重視。網(wǎng)絡防火墻系統(tǒng)就是網(wǎng)絡安全技術在實際中的應用之一。本設計實現(xiàn)的防火墻采。隨后使用這個過濾鉤子來決定如何處理進出系統(tǒng)的數(shù)據(jù)包。以下幾個模塊組成：過濾規(guī)則添加模塊，過濾規(guī)則顯示模塊，過濾規(guī)則存儲模塊，文件儲存模塊，安裝卸載規(guī)則模塊，IP封包過濾驅(qū)動功能模塊。

　　

【正文】 the data packets in and out. The firewall is posed of the following modules: adding filter rules module, display filter rules module, storage filter rules module, storage file module, installation and unloading rules module, IP packet driver module. Users can finish the operation by using main menu and button and protect the system effectively. Key words: Firewall。 FilterHook。 Filter Driver。 Packet Filtering 目 錄 論文總頁數(shù)： 21 頁 1 引言 ............................................................................................................................. 1 課題背景 ............................................................................................................ 1 本課題研究意義 ................................................................................................. 1 本課題研究方法 ................................................................................................. 1 2 防火墻概述 .................................................................................................................. 1 防火墻的定義 ..................................................................................................... 1 防火墻的基本策略 .............................................................................................. 2 包過濾防火墻 ..................................................................................................... 2 數(shù)據(jù)包 ..................................................................................................................................... 2 包過濾 防火墻的工作原理 .................................................................................................. 2 3 開發(fā)工具 ...................................................................................................................... 3 VISUAL C++ ................................................................................................... 3 VSS ................................................................................................................... 3 4 防火墻系統(tǒng)構成 ........................................................................................................... 3 需求分析 ......................................................................................................................................... 3 設計思路 ......................................................................................................................................... 4 功能模塊構成 ................................................................................................................................ 4 功能模塊介紹 ................................................................................................................................ 4 過濾規(guī)則添加刪除功能模塊 ........................................................................................... 4 過濾規(guī)則顯示功能模塊 .................................................................................................... 4 過濾規(guī)則存儲功能模塊 .................................................................................................... 5 文件存儲功能模塊 ............................................................................................................. 5 文件載入功能模塊 ............................................................................................................. 5 安裝卸載功能摸塊 ............................................................................................................. 5 IP 封包過濾驅(qū)動功能模塊 ............................................................................................... 5 5 防火墻設計 .................................................................................................................. 5 程序關鍵類 ........................................................................................................ 5 應用程序類 CFireWallAPP .............................................................................................. 5 主框架類 CMainFrame...................................................................................................... 5 文檔類 CFireWallDoc ........................................................................................................ 6 視圖類 CFireWallView ...................................................................................................... 7 _RuleInfo 類 ........................................................................................................................ 7 詳細設計 ............................................................................................................ 8 主界面 .................................................................................................................................. 8 添加過濾規(guī)則 ..................................................................................................................... 8 刪除過濾規(guī)則 ................................................................................................................... 11 驅(qū)動程序設計 ................................................................................................... 13 簡介 ..................................................................................................................................... 13 結(jié)構圖 ................................................................................................................................ 14 該驅(qū)動的優(yōu)點 ................................................................................................................... 14 本程序的驅(qū)動設計 ........................................................................................................... 14 6 程序測試 .................................................................................................................... 16 結(jié) 論 ........................................................................................................................ 18 參考文獻 ...............................................................................