I畢業(yè)設(shè)計（論文）學院信息工程學院專業(yè)計算機科學與技術(shù)班級4625姓名xucidong332007年4月15日II摘要本文主要闡述了目前網(wǎng)絡(luò)安全的現(xiàn)狀、缺陷、面臨的威脅，提出了相應(yīng)的防范措施，并介紹了網(wǎng)絡(luò)的常用協(xié)議。然后又介紹了WINSOCK技術(shù)和監(jiān)聽原理，并對最廣泛的監(jiān)聽工具sniffer做了簡單的概述?；诋斍熬W(wǎng)絡(luò)很多威脅都是來自與自己電腦的漏洞與自己不能夠清楚的察覺到自己電腦是否正在被侵犯，雖然防火墻可以提供幫助，但它不能對低層的東西顯示給大家。本文主要研究的是對局域網(wǎng)的數(shù)據(jù)包監(jiān)聽并分析，采用WINSOCK技術(shù)實現(xiàn)的。在此工具中主要有監(jiān)聽和IP數(shù)據(jù)包分析2大主要功能，并能通過窗體清楚的顯示出來。它使人們可以每時每刻觀察到進入自己電腦的數(shù)據(jù)包，并能夠觀察到進行數(shù)據(jù)交流時對方的IP地址和所開放的端口號，及時對信息明朗化，預(yù)防黑客端口的監(jiān)聽。關(guān)鍵詞：網(wǎng)絡(luò)安全監(jiān)聽工具winsock技術(shù)IP數(shù)據(jù)包Vc+IIIAbstractThistexthasexplainedthecurrentsituation,defect,threatfacedoftheonlinesecurityatpresentmainly,haveputforwardthecorrespondingprecautionarymeasures,hasintroducedthedailyagreementofthenetwork.Recommendwinsocktechnologyandmonitorprinciple,monitortoamostextensiveonetoolsniffermakethesimplesummary。Onthebasisofnetworkalotofthreattocomefromwithonesownloopholeandoneselfofcomputercannotclearperceivingwhetheronesowncomputerisbeinginfringedatpresent,thoughthefirewallcanofferhelp,itcantshowtothethingofthelowertoeverybody.Mainresearchofthistextiswrappingupandmonitoringandanalysingaboutthedataofthelan,adoptwincocktechnologytorealize.Monitorandwrapupandanalyse2greatmainfunctionswithipdatamainlyintoolonce,andcancomeoutthroughthedisplaythatthewindowbodyisclear.Itspeoplecanobserveallthetimethedatawhichenteronesowncomputerarechartered,andcanobservetheothersidesipaddressandendslogansopenedwhileexchangingthedata,cleartoinformationintime,preventthemonitoringofblackports.Keywords:networksecuritymonitortoolwinsocktechnologyipdatapackvc+IV目錄摘要.IAbstract.III目錄.IV引言.11網(wǎng)絡(luò)安全面臨的威脅.21.1什么是網(wǎng)絡(luò)安全.21.2網(wǎng)絡(luò)安全隱患與威脅.21.3幾種常見的威脅類型.41.4威脅我國網(wǎng)絡(luò)安全的4個因素.52網(wǎng)絡(luò)協(xié)議.73WINSOCK技術(shù)與監(jiān)聽原理.113.1WINSOCK技術(shù)概述.113.2局域網(wǎng)與以太網(wǎng)監(jiān)聽原理.144sniffer.174.1sniffer概述.174.2怎樣防范sniffer.185基于WINSOCK技術(shù)捕獲IP包工具的設(shè)計