基于半打開(kāi)的端口掃描技術(shù)的實(shí)現(xiàn)

論文字?jǐn)?shù):10985,頁(yè)數(shù):26

摘  要
隨著互聯(lián)網(wǎng)的飛速發(fā)展，網(wǎng)絡(luò)入侵行為日益嚴(yán)重，網(wǎng)絡(luò)安全日益成為人們關(guān)注的焦點(diǎn)。端口掃描技術(shù)是網(wǎng)絡(luò)安全掃描技術(shù)的重要技術(shù)之一。對(duì)目標(biāo)系統(tǒng)進(jìn)行端口掃描，是網(wǎng)絡(luò)系統(tǒng)入侵者進(jìn)入目標(biāo)系統(tǒng)的第一步。本文對(duì)端口掃描技術(shù)的原理和應(yīng)用進(jìn)行了闡述，并設(shè)計(jì)了一個(gè)簡(jiǎn)單的基于windows平臺(tái)上的端口掃描系統(tǒng)。在論文中介紹了半打開(kāi)掃描中的SYN探測(cè)技術(shù)，分析了這種掃描技術(shù)實(shí)現(xiàn)的原理和特點(diǎn)。實(shí)際設(shè)計(jì)中采用了掃描安全性和可行性較好的SYN探測(cè)技術(shù)來(lái)實(shí)現(xiàn)端口掃描，并實(shí)現(xiàn)了端口列表自定義，掃描結(jié)果存儲(chǔ)等幾大模塊化功能。最后結(jié)合當(dāng)前的實(shí)際情況對(duì)端口掃描的未來(lái)發(fā)展方向提出了一點(diǎn)個(gè)人的看法。
關(guān)鍵詞：網(wǎng)絡(luò)安全；端口掃描；SYN探測(cè)
The Implementation of a Port-scanning Program
Based on Semi-opened Port Technology
Abstract
With the quick development of the internet, network intrusion behavior becomes more and more serious; Network security becomes the focus which people pay attention to. Port-Scanning Technology is one of the most important technologies of the safe scanning on internet. The first step that network system intruders enter the target system is the port scanning of the system. This essay explains the principle and application of the port scanning technology, and then designs a simple port-scan system which bases on the Windows platform. The paper introduces the SYN probe technology of the semi-open scan technologies, analyzes its implementing principle, approach and characters. In the real design it use the SYN probe technology which has a better scanning security and feasibility to achieve the Port Scanning, then realize user-defined port list function, recording of the scanning result, and some other functional modules. At last, combined with the nowadays actual situation, the paper brings a few personal minds for the future direction of the development of the Port-Scanning.
Key words: Network security；Port scanning；SYN probe

目  錄

1 引言 1
1.1 端口掃描概述 1
1.2 端口掃描技術(shù)的國(guó)內(nèi)外研究現(xiàn)狀 1
1.3 端口掃描原理 1
1.4 端口掃描技術(shù)概要 2
1.5 SYN技術(shù)詳解 3
1.5.1 TCP包探測(cè)原理 3
1.5.2 SYN包探測(cè) 4
1.5.3 分組時(shí)延 4
1.6 端口掃描實(shí)現(xiàn)方法 4
2 需求分析 4
2.1 端口掃描器的總體要求 4
2.1.1 設(shè)計(jì)背景 4
2.1.2 用戶(hù)特點(diǎn) 4
2.1.3 軟件開(kāi)發(fā)及運(yùn)行環(huán)境 5
2.2 端口掃描器的需求分析 5
3 端口掃描器的實(shí)現(xiàn) 5
3.1 功能模塊簡(jiǎn)介 5
3.2 程序?qū)崿F(xiàn)流程 6
3.3 SYN探測(cè)的實(shí)現(xiàn) 6
3.4 端口掃描功能模塊 15
3.4.1 端口選擇模塊 15
3.4.2 目標(biāo)IP選取模塊 16
3.4.3 終止掃描 17
3.4.4 掃描結(jié)果存儲(chǔ)模塊 17
4 測(cè)試環(huán)境及結(jié)果 18
4.1 硬件環(huán)境 18
4.2 軟件環(huán)境 18
4.3 測(cè)試結(jié)果 18
5 端口掃描技術(shù)的發(fā)展方向和趨勢(shì) 19
結(jié)    論 19
參考文獻(xiàn) 20
致    謝 21
聲    明 22