局域網(wǎng)的數(shù)據(jù)包監(jiān)聽及數(shù)據(jù)分析

論文字?jǐn)?shù):18935,頁數(shù):42

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。基于當(dāng)前網(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(jìn)入自己電腦的數(shù)據(jù)包，并能夠觀察到進(jìn)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++

Abstract
This text has explained the current situation , defect , threat faced of the online security at present mainly, have put forward the corresponding precautionary measures, has introduced the daily agreement of the network. Recommend winsock technology and monitor principle , monitor to a most extensive one tool sniffer make the simple summary。On the basis of network a lot of threat to come from with one's own loophole and oneself of computer can not clear perceiving whether one's own computer is being infringed at present, though the fire wall can offer help , it can't show to the thing of the lower to everybody . Main research of this text is wrapping up and monitoring and analysing about the data of the lan, adopt wincock technology to realize.Monitor and wrap up and analyse 2 great main functions with ip data mainly in tool once, and can come out through the display that the window body is clear . Its people can observe all the time the data which enter one's own computer are chartered , and can observe the other side's ip address and end slogans opened while exchanging the data , clear to information in time, prevent the monitoring of black ports.

Key words: network security  monitor tool  winsock technology  ip data pack  vc++

目  錄
摘  要 I
Abstract II
目  錄 III
引  言 1
1  網(wǎng)絡(luò)安全面臨的威脅 2
1.1 什么是網(wǎng)絡(luò)安全 2
1.2 網(wǎng)絡(luò)安全隱患與威脅 2
1.3 幾種常見的威脅類型 4
1.4 威脅我國網(wǎng)絡(luò)安全的4個因素 5
2  網(wǎng)絡(luò)協(xié)議 7
3  WINSOCK技術(shù)與監(jiān)聽原理 11
3.1 WINSOCK技術(shù)概述 11
3.2 局域網(wǎng)與以太網(wǎng)監(jiān)聽原理 14
4  sniffer 17
4.1 sniffer概述 17
4.2 怎樣防范sniffer 18
5  基于WINSOCK技術(shù)捕獲IP包工具的設(shè)計與實現(xiàn) 22
5.1 系統(tǒng)概述 22
5.2 系統(tǒng)概要設(shè)計 22
5.3 系統(tǒng)主要功能介紹 24
5.4 實例分析 28
5.5 數(shù)據(jù)包首部解析 29
結(jié)  論 31
參考文獻(xiàn) 33
附  錄 34
謝  辭 38