【正文】 ....................................... 6 本文主要任務(wù) ............................................................................................................ 8 論文的組織 結(jié)構(gòu) ........................................................................................................ 8 ....................................................................................................................... 9 OSI 參考模型 ............................................................................................................. 9 TCP/IP 體系結(jié)構(gòu) ..................................................................................................... 10 OSI 與 TCP/IP 的比較 ..............................................................................................11 HTTP 協(xié)議 ............................................................................................................... 12 IP 協(xié)議 ...................................................................................................................... 13 數(shù)據(jù)捕獲函數(shù)的一些函數(shù) ...................................................................................... 15 本章小結(jié) .................................................................................................................. 16 ............................................................................................................................. 18 可行性分析 .............................................................................................................. 18 技術(shù)可行性 ................................................................................................... 18 經(jīng)濟(jì)可行性 ................................................................................................... 18 社會(huì)可行性 ................................................................................................... 19 系統(tǒng)需求分析 .......................................................................................................... 19 功能需求 .................................................................................................... 19 性能需求 ...................................................................................................... 23 運(yùn)行需求 ....................................................................................................... 24 安全需求分析 ............................................................................................... 24 4 系統(tǒng)設(shè)計(jì) ............................................................................................................................. 26 網(wǎng)絡(luò)監(jiān)聽(tīng)模塊 .......................................................................................................... 26 攔截策略控制模塊 .................................................................................................. 27 IP 包分析模塊 .......................................................................................................... 28 包過(guò)濾模塊 ................................................................................................ 28 網(wǎng)址匹配模塊 ............................................................................................... 31 網(wǎng)頁(yè)攔截模塊 .......................................................................................................... 32 數(shù)據(jù)更新模塊 .......................................................................................................... 34 消息提示模塊 .......................................................................................................... 35 ............................................................................................................................. 37 系統(tǒng)開(kāi)發(fā)環(huán)境 .......................................................................................................... 37 系統(tǒng)測(cè)試 .................................................................................................................. 37 ......................................................................................................................... 40 總結(jié) .......................................................................................................................... 40 展望 .......................................................................................................................... 41 1 緒論 課題背景 隨著計(jì)算機(jī)網(wǎng)絡(luò)的快速發(fā)展，給人們的工作和生活帶來(lái)了極大的便利。 關(guān) 鍵 詞 ：混雜模式 捕獲數(shù)據(jù)包 網(wǎng)頁(yè) Title: Base on the bypass web access montitoring system deisign and implementation Name: Supervisor: Abstract In the laboratory or office, administrators or employees can always expect students to concentrate on their own tasks, rather than to browse watch and study or work unrelated pages or sites. Thus, when students or staff independent of the input URL, the server administrator can grab it on the page in front of their handshake prepared in advance and send the administrator page, thus preventing its normal access, improve the learning introduced the bad sites for normal work intrusion and damage, the card is set by the operator to achieve a packet capture to promiscuous mode, so as to effectively monitor the entire work through IP packet filtering module in addition to the HTTP GET and POST package packet filter to extract the URL address, and then prepared a database with URL blacklist matching to determine which is unrelated to work or study site, thus blocking its access to the work environment to achieve the purpose of , a detailed embodiment of the system for testing the performance and functionality, so that the functional integrity and performance of the system with some optimization. KEY WORDS: Library management system。 首先介紹了不良網(wǎng)站對(duì)于正常網(wǎng)絡(luò)的入侵以及危害，通過(guò)把網(wǎng)卡設(shè)置為混雜模式實(shí)現(xiàn)了捕獲數(shù)據(jù)包的操作，從而有效的對(duì)于整個(gè)網(wǎng)絡(luò)進(jìn)行監(jiān)聽(tīng)，通過(guò) IP 包過(guò)濾模塊把HTTP 中除 GET 包和 POST 包過(guò)濾掉，提取出 URL 地址，然后與事先準(zhǔn)備的數(shù)據(jù)庫(kù)黑名單網(wǎng)址進(jìn)行匹配，來(lái)判斷出哪些是對(duì)工作或?qū)W習(xí)無(wú)關(guān)的網(wǎng)址，進(jìn)而攔截其訪問(wèn)，達(dá)到了凈化網(wǎng)絡(luò)環(huán)境的目的。