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端口扫描技术的设计与实现(SYN探测技术).doc

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端口扫描技术的设计与实现(SYN探测技术) 摘 要 随着互联网的飞速发展,网络入侵行为日益严重,网络安全日益成为人们关注的焦点。端口扫描技术是网络安全扫描技术的重要技术之一。对目标系统进行端口扫描,是网络系统入侵者进入目标系统的第一步。本文对端口扫描技术的原理和应用进行了阐述,并设计 ... <p>摘&nbsp; 要<br /> 随着互联网的飞速发展,网络入侵行为日益严重,网络安全日益成为人们关注的焦点。端口扫描技术是网络安全扫描技术的重要技术之一。对目标系统进行端口扫描,是网络系统入侵者进入目标系统的第一步。本文对端口扫描技术的原理和应用进行了阐述,并设计了一个简单的基于windows平台上的端口扫描系统。在论文中介绍了半打开扫描中的SYN探测技术,分析了这种扫描技术实现的原理和特点。实际设计中采用了扫描安全性和可行性较好的SYN探测技术来实现端口扫描,并实现了端口列表自定义,扫描结果存储等几大模块化功能。最后结合当前的实际情况对端口扫描的未来发展方向提出了一点个人的看法。<br /> 关键词:网络安全;端口扫描;SYN探测<br /> &nbsp;<br /> The Implementation of a Port-scanning Program<br /> Based on Semi-opened Port Technology<br /> Abstract<br /> 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. <p class='Zdu918'></p> <br /> Key words: Network security;Port scanning;SYN probe <br /> <br /> 端口扫描实现方法<br /> 本文通过对基于半打开的端口扫描技术的实现来介绍了现在一些主流的端口扫描技术,通过对程序的开发加深了对端口扫描技术的认识。经过对端口扫描技术的了解和认识,本文采用隐蔽性较好基于主机的SYN刺探技术来实现。<br /> <br /> 设计背景<br /> 该端口扫描器是面向普通用户使用,以期成为一个普通用户用来检测端口网络主机端口并有效地保护自己。在采用SYN刺探方式进行扫描的基础上成为一个基于半打开的实用、简单、方便的端口扫描工具。<br /> <br /> 用户特点<br /> 由于该端口扫描系统是一个基于半打开的端口扫描器,其面向的是普通的对于端口扫描有需求的用户,因此需要提供一个简洁、方便、高效的界面和功能。<br /> <br /> 软件开发及运行环境<br /> 系统开发工具:Visual C++ 6.0<br /> <br /> 程序实现流程<br /> 主函数首先创建一个侦听线程以准备获得返回信息。然后调用FillLocalIP函数将本地IP写入IP列表中,接着读取要扫描的IP和端口,判断是否是本地IP,若是则调用函数scanlocal对本地IP和端口发起连接并获得扫描结果;如果不是本地IP就调用scan函数对远程IP发送SYN包,并通过创建的套接字rawsock得到从系统中返回的信息,分析数据后得到扫描结果。最后将扫描的结果插入结果树中排序并可保存为文本文件。 <br /> 1.5.3&nbsp;&nbsp;&nbsp; 分组时延&nbsp;&nbsp;&nbsp; 4<br /> 1.6&nbsp;&nbsp;&nbsp; 端口扫描实现方法&nbsp;&nbsp;&nbsp; 4<br /> 2&nbsp;&nbsp;&nbsp; 需求分析&nbsp;&nbsp;&nbsp; 4<br /> 2.1&nbsp;&nbsp;&nbsp; 端口扫描器的总体要求&nbsp;&nbsp;&nbsp; 4<br /> 2.1.1&nbsp;&nbsp;&nbsp; 设计背景&nbsp;&nbsp;&nbsp; 4<br /> 2.1.2&nbsp;&nbsp;&nbsp; 用户特点&nbsp;&nbsp;&nbsp; 4<br /> 2.1.3&nbsp;&nbsp;&nbsp; 软件开发及运行环境&nbsp;&nbsp;&nbsp; 5<br /> 2.2&nbsp;&nbsp;&nbsp; 端口扫描器的需求分析&nbsp;&nbsp;&nbsp; 5<br /> 3&nbsp;&nbsp;&nbsp; 端口扫描器的实现&nbsp;&nbsp;&nbsp; 5<br /> 3.1&nbsp;&nbsp;&nbsp; 功能模块简介&nbsp;&nbsp;&nbsp; 5<br /> 3.2&nbsp;&nbsp;&nbsp; 程序实现流程&nbsp;&nbsp;&nbsp; 6<br /> 3.3&nbsp;&nbsp;&nbsp; SYN探测的实现&nbsp;&nbsp;&nbsp; 6<br /> 3.4&nbsp;&nbsp;&nbsp; 端口扫描功能模块&nbsp;&nbsp;&nbsp; 15<br /> 3.4.1&nbsp;&nbsp;&nbsp; 端口选择模块&nbsp;&nbsp;&nbsp; 15<br /> 3.4.2&nbsp;&nbsp;&nbsp; 目标IP选取模块&nbsp;&nbsp;&nbsp; 16<br /> 3.4.3&nbsp;&nbsp;&nbsp; 终止扫描&nbsp;&nbsp;&nbsp; 17<br /> 3.4.4&nbsp;&nbsp;&nbsp; 扫描结果存储模块&nbsp;&nbsp;&nbsp; 17 <p class='Zdu918'></p> <br /> 4&nbsp;&nbsp;&nbsp; 测试环境及结果&nbsp;&nbsp;&nbsp; 18<br /> 4.1&nbsp;&nbsp;&nbsp; 硬件环境&nbsp;&nbsp;&nbsp; 18<br /> 4.2&nbsp;&nbsp;&nbsp; 软件环境&nbsp;&nbsp;&nbsp; 18<br /> 4.3&nbsp;&nbsp;&nbsp; 测试结果&nbsp;&nbsp;&nbsp; 18<br /> 5&nbsp;&nbsp;&nbsp; 端口扫描技术的发展方向和趋势&nbsp;&nbsp;&nbsp; 19<br /> 结&nbsp;&nbsp;&nbsp; 论&nbsp;&nbsp;&nbsp; 19<br /> 参考文献&nbsp;&nbsp;&nbsp; 20<br /> 致&nbsp;&nbsp;&nbsp; 谢&nbsp;&nbsp;&nbsp; 21<br /> 声&nbsp;&nbsp;&nbsp; 明&nbsp;&nbsp;&nbsp; 22 <span class='Zdu918'></span> </p><P></P> <P>摘 要<BR>改革开放30年,人民生活水平的不断提高,物质文化消费的需要进一步加大,作为安身立命之首的住房当之无愧的成为关系到民生民计的首要大事。而住宅楼的建筑设计是否完善,直接关系到百姓的安居乐业。此篇论文是关于建筑设计中的照明部分的设计,它也是建筑设计重要的部分之一。<BR>福佳商城1号楼为12层民用住宅楼,楼层高度为35.75米,建筑面积为9666.72m 。其中:地下1层为人防地下室战时为五级一等人员掩蔽所,平时为普通储藏室。地上1、2层为商用建筑,3到10层为标准住宅层,11层为顶层。楼内安装有24小时工作电梯。本建筑物共七路电源进线,全部由小区变电所引来,采用电缆埋地引至地下室的配电间,电压均为220/380V。本文通过必要的计算和按照国家规定标准对建筑进行强电和弱电方面的设计。强电设计方面:在确定了配电系统方案和照明方案之后,进行了照度计算和负荷计算,并且对导线、开关、插座等电气设备进行了选择,同时对所选择的灯具与开关进行了合理的布置。在综合布线方面,对有线电视线路、电话系统、对讲机系统和网络线路行了设计,本文对建筑的各种管线铺设方法有明确的说明。在防雷安全方面,进行了避雷带、引下线及接地极的设计;最后,进行了工程概预算。 </P> <P>关键词:电气照明;低压配电;防雷及接地保护;预算<BR>&nbsp;<BR>Abstract<BR>In reform and opening-up over the past 30 years, the constant improvement of the living standards of the people, the need of the cultural consumption of material is further strengthened, as settle down and get on with one's work house becoming, concerning people's livelihood primary trouble that the people counts deserving of the first. And whether the architectural design of residential building is complete, concern living and working in peace and contentment of common people directly. This thesis is a design of the electric lighting part regarding in the architectural design, it is one of the parts with important architectural design too. <BR>&nbsp;Building 1 of good store of good fortune is civil residential building of 12 storeys, the height of the floor is 35.75 meters, floor area is 9666.72m . Among them: 1 storey in the underground is that the basement of people's air defense is first-class personnel's shelter of five grades in wartime, it is the ordinary storeroom at ordinary times. 1, 2 storeys are the commercial building on the ground, 3 to 10 floors are storey of standard house, and the top floor on the 11th floor. Install 24-hour job lift in the floor. Building this seven Luis power enter the line altogether, all is attracted by the transformer substation in the district, while adopting the cable to guide burying, the voltage is 220/380V. Through essential calculation and go on the design of better cable and weak cable according to national regulation standard to building this text. The respect that the strong electricity is designed:After confirming the systematic scheme of the distribution and lighting scheme, have carried on calculating and load calculation of the intensity of illumination, and has chosen electric equipment such as the wire, switch, socket, carried on the rational arrangement to lamps and lanterns and switch chosen at the same time. After confirming the systematic scheme of the distribution and lighting scheme, have carried on calculating and load calculation of the intensity of illumination, and has chosen electric equipment such as the wire, switch, socket, carried on the rational arrangement to lamps and lanterns and switch chosen at the same time. In comprehensive wiring, to cable TV circuit, telephone system, interphone system and network circuit competent to design, this text has clear explanation to lay the method to various pipeline in the building. <BR>其它有关国家及地方的现行旅程,规范及标准。<BR><BR>设计范围<BR>本工程设计包括红线的以下电气系统<BR>(1)低压配电;(2)电气照明,防雷及接地保护;<BR>(3)有线电视系统;(4)电话系统;(5)网络布线系统;<BR>(6)多功能访客对讲系统。(弱电设计部分仅做概念性说明)<BR><BR>目 录 字<BR>第1章 绪 论&nbsp;1<BR>第2章 总体方案确定&nbsp;2<BR>2.1 总体方案说明&nbsp;2<BR>2.2 对图纸的解释和说明&nbsp;2<BR>2.3 各部分设计与计算的必要性&nbsp;2<BR>2.4 图纸设计说明&nbsp;3<BR>第3章 负荷计算&nbsp;6<BR>3.1 人防总动力配电箱负荷计算&nbsp;7<BR>3.2 应急照明配电箱负荷计算&nbsp;7<BR>3.3 1AP配电箱负荷计算&nbsp;7<BR>3.4 2AP配电箱负荷计算&nbsp;7<BR>3.5 跃层配电箱负荷计算&nbsp;8<BR>3.6 三至十层配电箱负荷计算&nbsp;8<BR>3.7 一层配电箱负荷计算&nbsp;9<BR>3.8 总配电柜负荷计算&nbsp;9<BR>第4章 照度概述&nbsp;11<BR>4.1 照度质量说明&nbsp;11<BR>4.2 单元式住宅的照明要素 &nbsp;12<BR>第5章 照度计算&nbsp;15<BR>5.1 概述&nbsp;15<BR>5.2 基本计算公式&nbsp;15<BR>5.3 利用系数的有关概念&nbsp;16<BR>5.4 具体房间的照度计算&nbsp;18<BR>第6章 电气设备的选择&nbsp;27 <BR>6.1 灯具的选择&nbsp;27<BR>6.2 开关的种类及选择&nbsp;28<BR>6.3 插座的选择&nbsp;28<BR>6.4 导线截面计算及导线选择&nbsp;30<BR>6.5 照明配电箱的选择&nbsp;37<BR>第7章 弱电系统设计&nbsp;39<BR>7.1 电梯的配线&nbsp;39<BR>7.2 有线电视的室内配线&nbsp;40<BR>7.3 室内电话通信线路的配线&nbsp;41<BR>第8章 防雷接地设计&nbsp;43<BR>8.1 雷电现象以危害&nbsp;43<BR>8.2 各类建筑物防雷&nbsp;44<BR>8.3 引下线和防雷接地装置&nbsp;46<BR>(毕业设计)<BR>8.4 电气接地安全技术&nbsp;47<BR>8.5 电气设备接地的作用分析&nbsp;48<BR>8.6 电气设备接地的要求&nbsp;50<BR>第9章 工程概算&nbsp;52<BR>9.1 预算&nbsp;52<BR>9.2 预算内容&nbsp;56<BR>9.3 本工程概预算&nbsp;61<BR>第10章 结 论&nbsp;65<BR>参考文献&nbsp;66<BR>致 谢&nbsp;67<BR>附 录Ⅰ&nbsp;68<BR>附 录Ⅱ&nbsp;73 <p class='Wnj231'></p> </P><P></P> <p>内容简介</p> <p>单箱双室箱型连续梁桥毕业设计</p> <p><br /> &nbsp; </p> <p>文件组成及目录 <p class='Smt254'></p> </p> <p>&nbsp; <p class='Smt254'></p> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">仅</span><span lang="EN-US">Word</span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">文档</span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">其中正文(总计</span><span lang="EN-US">73</span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">页)内容如下:</span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设计原始资料</span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第一章</span> <span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">方案比选</span><span lang="EN-US"><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp; </span></span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第二章</span><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">上部结构尺寸拟定及内力计算</span><span lang="EN-US"><span style="mso-tab-count: 1">&nbsp; </span></span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第三章</span><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">预应筋的设计与布置</span><span lang="EN-US"><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </span></span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第四章</span><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">非预应筋的布置</span><span lang="EN-US"><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp; </span></span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第五章</span><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">截面特性表</span><span lang="EN-US"><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第六章</span><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">预应力损失计算</span><span lang="EN-US"><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp; </span></span> <p class='Smt254'></p> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第七章</span><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">正截面承载能力计算</span><span lang="EN-US"><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp; </span></span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第八章</span><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">斜截面抗剪承载力</span><span lang="EN-US"><span style="mso-tab-count: 1"> </span></span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第九章 截面正应力计算</span><span lang="EN-US"><span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp; </span></span> <span class='Smt254'></span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第十章</span><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp; </span></span><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">斜截面主拉应力和主压应力</span> <span class='Smt254'></span> </p> <p style="margin: 0cm 0cm 0pt" class="MsoNormal"><span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">第十一章</span> <span style="font-family: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">桥墩设计</span><span lang="EN-US"> <span style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span> <p class='Smt254'></p> </p><P></P> <P>前言<BR>本机利用高速回转的叶轮,将弹丸抛向滚筒内不断翻转的铸件或锻件来清除其表面的残余型砂或氧化铁皮。清理均匀,生产率高,适宜于中小型铸锻车间清理15kg以下的小件使用。<BR>由于本机带有单独的集尘装置,故安装地点不受车间通风管路的限制,且卫生条件好。本机设有自动停车装置,故操作简便<BR>我的课题来源于铸造机械有限公司。为了清除铸件或锻件表面的残余型砂或氧化铁皮利用高速回转的叶轮将弹丸抛向滚筒内不断翻转的零件,要求达到如下目的:(1)综合运用机械和电器知识;(2)滚筒传动机构的设计;(3)轴的设计与校核;(4)滚筒传动机构所有零件的设计。该系列产品适用于清理各种不怕碰撞、划伤的铸、锻件。是小型铸、锻、热处理车间清理工件表面残砂、氧化皮的理想设备。主要由滚筒、分离器、抛丸器、提升机、减速电机等组成。利用高速旋转的叶轮将弹丸抛向滚筒内部不断翻转的工件,使工件表面的附着物迅速脱落,从而获得一定粗糙度的光洁表面,达到清理的目的。积二十几年经验和结合日本 IKK 技术制造而成的 TOCHU 牌抛丸机可提供适应各领域用的成套设备,其表面处理技术为中国工业界提供良好的服务。抛丸机的种类很多,有翻滚式、转台式、车式、输送带式及悬挂式等多种类型。 </P> <P>总体方案的论证<BR>滚筒抛丸机的抛丸器为主要实行机构,其性能的好坏直接影响抛丸机的效率,还有传动系统和集尘装置也是抛丸机的主要机构。<BR>方案一&nbsp; 抛丸器传动:由电动机经皮带轮传动叶轮主轴使叶轮高速旋转。滚筒传动:由电动机经链轮传动带动托轮,再以摩擦传动滚筒。集尘器选用旋风除尘器。<BR>方案二&nbsp; 抛丸器传动:由电动机经齿轮传动叶轮主轴使叶轮高速旋转。滚筒传动:由电动机经由皮带轮传动带动托轮,再以齿轮传动滚筒。集尘器选用电除尘器。<BR>方案三&nbsp; 抛丸器传动:由电动机经链轮传动叶轮主轴使叶轮高速旋转。滚筒传动:由电动机经由齿轮传动带动托轮,再以齿轮传动滚筒。集尘器选用旋风除尘器。<BR>方案一结构紧凑,布局合理,传动简单,可靠性高,使用寿命可以得到保障,制造成本低,加工
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