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電腦網路雙通怎麼設置 2025-02-12 21:33:12

網路安全虛擬實訓室

發布時間: 2023-07-23 04:52:37

① 求一篇有關網路虛擬實驗室的中英文文獻,要中英

論文中英對照,可能有錯誤,但應該不會很多。

隨著計算機、網路技術的不斷發展,網路虛擬實驗室得到越來越多的應用。 With the computer, the continuous development of network technology, network virtual laboratory to be more and more applications. 介紹了虛擬實驗室的基本特點及其體系結構,實現虛擬實驗室的四種關鍵技術: Java、ActiveX、VRML、ASP,最後探討了虛擬實驗室開發過程當中應注意的幾個問題。 Introced the basic characteristics of virtual laboratory and its architecture, the realization of virtual laboratory four key technologies: Java, ActiveX, VRML, ASP, the last of the development process of virtual laboratory should pay attention to several problems. 關鍵詞虛擬實驗室遠程教育現代教育技術迅速崛起的現代教育技術把虛擬實驗引入到了實驗教學中。 Key words virtual laboratory of modern ecational technology distance ecation the rapid rise of the modern ecational technology into the virtual experiment experimental teaching. 虛擬實驗的應用改變了傳統的教育模式,使得教與學方式發生了革命性的變化。 Application of virtual experiment to change the traditional mode of ecation and teaching and learning approach makes revolutionary change took place. 目前,用於實驗教學的計算機虛擬實驗軟體非常豐富,加上高校計算機及網路資源,為虛擬實驗的開設提供了必要的基礎條件。 At present, for the experimental teaching of computer software, rich virtual experiment, together with the Universities computer and network resources for the creation of virtual experiments to provide the necessary basic conditions. 通過網路虛擬實驗室,能夠通過計算機在網路中模擬一些實驗現象,它不僅僅能夠提高實驗教學效果,更加重要的是對一些缺乏實驗條件的學生,通過網路同樣能夠身臨其境地觀察實驗現象,甚至和異地的學生合作進行實驗。 Through the network of virtual labs, through computer simulation in the network a number of experimental phenomena, it is not only to improve the effectiveness of experimental teaching, and more importantly, the lack of experimental conditions on some of the students, through the network to feel the same experimental phenomena observed, students in different places and even co-operation and carry out such experiments. 1 網路虛擬實驗室的發展及其特點網路虛擬實驗就是在WEB中創建出一個可視化的環境,其中每一個可視化的物體代表一種實驗對象。 1 of the development of virtual laboratory network and the characteristics of the network is in the WEB virtual experiment to create a visual environment, a visualization of each of these objects on behalf of an experimental object. 通過滑鼠的點擊以及拖曳操作,用戶可以進行虛擬的實驗。 Through mouse clicks and drag and drop operation, users can conct virtual experiments. 網路虛擬實驗實現的基礎是多媒體計算機技術與網路技術的結合。 Network virtual experiment is based on the realization of multi-media computer technology and network technology. 無論是學生還是教師,都可以自由地、無顧慮地隨時進入虛擬實驗室操作儀器,進行各種實驗。 Whether students or teachers, are free and without hesitation to operate at any time to enter the virtual laboratory apparatus, to carry out various experiments. 為實驗類課程的教學改革及遠程教育提供了條件和技術支持。 Experimental curriculum reform and teaching conditions for the provision of distance ecation and technical support. 許多國內外從事實驗室工作的研究者們在實踐中還提出這樣一些概念:Digital Lab、MBL(Micro-computer Based Lab),盡管這些名詞不統一,但他們的實踐從不同的層面實現了虛擬實驗室。 Many at home and abroad to engage in laboratory work in practice, the researchers also proposed the concept of such: Digital Lab, MBL (Micro-computer Based Lab), although these terms are not uniform, but they practice at different levels from a virtual experiment Room. 1.1 印地安那州立大學的MBL化學實驗室該實驗室在給新生開化學實驗課時用計算機來輔助做這樣一些事,用計算機採集與分析實驗數據,用計算機展示實驗,在網上發布相關的實驗指導材料。 1.1 of the Indiana State University chemical laboratory of the MBL laboratory chemistry experiments to open new classes to help with the computer do something with computer acquisition and analysis of experimental data, using computer experiments show that in the relevant online Experimental guidance material. 1.2 芝加哥伊利諾伊大學數字化有機化學實驗室該實驗室充分利用網路資源,在網上提供了一系列的實驗教學指導:在線實驗教材;實驗教學時間表;實驗測評方法、形式、時間;虛擬實驗;相關教學資源的鏈接等。 1.2 University of Illinois at Chicago, the number of the laboratory of organic chemistry lab full use of network resources, the Internet has provided a series of experimental teaching guide: online experimental materials; experimental teaching timetable; experimental evaluation of methods, forms, time; virtual experiments; related to teaching Links and other resources. 他們還用計算機進行實驗教學的教務管理。 They also experiment with computer teaching ecational administration. 1.3 卡羅萊納州立大學的LAAP(Learn Anytime Anywhere Physics)他們利用Java技術建立了基於Web的探索式虛擬物理實驗室,主要有以下幾個模塊:基於Java Applet的虛擬實驗設備和實驗設施;相關的實驗課程模塊;實驗學習結果評價模塊;協作學習模塊。 1.3 Carolina State University LAAP (Learn Anytime Anywhere Physics) using Java technology to build Web-based virtual physics laboratory to explore, mainly in the following moles: Java Applet based virtual laboratory equipment and laboratory facilities; related An experimental course mole; experimental study and the results of the evaluation mole; collaborative learning mole. 虛擬實驗室最大的優點是成本低,效率高。 Virtual Laboratory biggest advantage is low cost, high efficiency. 因為「軟體即為儀器」,這樣就可解決因實驗經費不足或高檔次、高價位設備缺乏所不能開出的實物實驗,同時也不會造成因使用不當,管理不善等因素造成的儀器損壞、元器件丟失等現象。 Because "software is the instrument," and this could be the lack of funds resulting from the experimental or high-grade, high-priced equipment can not be opened by the lack of physical experiments, but also will not lead to a result of improper use caused by such factors as poor management of equipment damage, missing components and so on. 同時虛擬實驗還可以模擬實驗室中沒有的設備,而且還可以不受時空的限制方便地進行實驗。 At the same time, virtual experiments can not simulate the laboratory equipment, but also can be exempted from the restrictions of time and space to easily carry out such experiments. 另外,虛擬實驗室還應具備一些基本特徵:與現實的一致性(或現實的延伸)、高度交互性、實時的信息反饋。 In addition, the virtual laboratory should also have some basic features: the coherence and reality (or an extension of reality), highly interactive, real-time feedback. 2 網路虛擬實驗室體系結構網路虛擬實驗室應是一個集虛擬實驗教學管理系統、實驗課教學指導系統,網路實驗模擬等為一體的功能強大的網上運行系統。 2 Network architecture of Virtual Laboratory Virtual Laboratory should be a set of virtual experiment management system for teaching, laboratory teaching guidance systems, network simulation and so on into a powerful operating system online. 各部分之間相互聯系相互補充,僅具有相對獨立性。 Interlinkages between the various parts of each other, only with relative independence. 開發虛擬環境,實現實驗模擬應是虛擬實驗室建設的核心部分。 The development of a virtual environment, the realization of experimental simulation is a virtual laboratory should be the core of the building. 圖1是虛擬實驗室體系結構圖。 Figure 1 is a virtual laboratory system structure. 3 構建網路虛擬實驗室的關鍵技術目前國內的虛擬實驗室研究還處於萌芽階段,國外已經有很多大學進行了這方面的研究。 3 build a network of key technology of virtual laboratory virtual current laboratory research is still in its infancy, many universities abroad have carried out studies in this area. 總結他們所使用的技術,可以看出大多可以劃分下面幾類: 3.1 Java技術Java是一個廣泛使用的網路編程語言,它是一種新的計算概念。 Summing up their use of technology, we can see that the majority can be divided into the following categories: 3.1 Java technology is a widely used Java web programming language, it is a new computing concept. 首先,作為一種程序設計語言,它簡單、不依賴於機器的結構、具有可移植性、安全性、並且提供了並發的機制、具有很高的性能。 First of all, as a programming language, it is simple, is not dependent on the structure of the machine with portability, security, and provides a mechanism for concurrency, high performance. 其次,它最大限度地利用了網路,Java的小應用程序(applet)可在網路上運行而不受CPU和環境的限制。 Secondly, to maximize the use of its network, Java applets for (applet) can be run on the network without restrictions on CPU and the environment. 另外,Java還提供了豐富的類庫,使程序設計者可以很方便地建立自己的系統,這一點對於構建網上虛擬實驗室系統來說也是非常關鍵的。 In addition, Java also provides a rich class library, so that process designers can easily build their own systems, this point for building a virtual laboratory system is also very crucial. 3.2 ActiveX控制項ActiveX技術允許不同軟體開發的組件在網路上可以互相進行操作。 3.2 ActiveX Controls ActiveX technology allows different software components on the network can operate with each other. Ac?鄄tiveX使用了微軟的組件對象技術使得本地的組件可以和網路上的組件進行通信,使用ActiveX開發的另一個好處在於它的代碼復用性,也就是說在虛擬實驗室的開發過程中,一個實驗儀器可以在多個實驗環境中重復使用,這一點對於持續開發過程尤為重要。 Ac? Juan tiveX use of Microsoft's Component Object technology enables local and network components can be components of the communication, the development of the use of ActiveX Another advantage is that it is code reuse, that is to say in a virtual laboratory development process, an experimental device which can be the environment in a number of experiments re-use, this is particularly important in the process of sustainable development. 這種技術使得一個大的工程項目可以劃分成小塊的組件,也就相當於把復雜工程簡單為一個個組成部分,完成了每個組成部分之後集成起來就可以得到最終的項目。 This technology enables a large project can be divided into small components, it is equivalent to the complexity of the project as a simple component, was completed after each component can be integrated into the final project. 可以開發ActiveX組件的環境有很多,其中開發效率最高和最易上手的是Visual Ba?鄄sic。 ActiveX components can be developed a lot of environment in which to develop the most efficient and most易上手is Visual Ba? Juan sic. 3.3 VRML技術VRML是虛擬實境描述模型語言(Virtual Reality Modeling Language) 的簡稱。 3.3 VRML technology is VRML Virtual Reality Modeling Language (Virtual Reality Modeling Language) the short title. 它是描述虛擬環境中場景的一種標准,也是在網上實現虛擬現實的關鍵性技術。 It is described in a virtual environment of a standard scene, but also the Internet to achieve the key technologies of virtual reality. VRML的基本特徵包括分布式、互動式、平台無關、三維、多媒體集成、逼真自然等,被成為「第二代WEB」,已經被越來越多的人們所重視。 The basic feature of VRML, including distributed, interactive, platform-independent, three-dimensional, multi-media integration, life-like nature, was a "second-generation WEB", has been more and more people paying attention to. 國際標准化組織1998年1月正式將其批准為國際標准。 International Organization for Standardization in January 1998 officially approved as international standards. VRML是一種建模語言,其基本目標是建立Internet上的互動式三維多媒體,也就是說,它是用來描述三維物體及其行為的,可以構建虛擬境界。 VRML is a modeling language, its basic goal is to establish a three-dimensional Internet, interactive multimedia, in other words, it is used to describe the three-dimensional objects and their behavior, you can build a virtual realm. 用VRML實現與Internet虛擬現實交互有下面幾個好處:豐富了媒體表現形式、協同工作角色的可視化管理、改善了協同環境的用戶界面、增強了協同環境的交互性。 With the Internet using VRML interactive virtual reality has the following advantages: rich media manifestations, the role of the visual work of management, to improve the collaborative environment of the user interface, enhanced interactive collaborative environment. 可見,將VRML融合到網上虛擬實驗室的開發過程中,既可以增強表現力和用戶的接受力,又可以實現較好的協同工作虛擬化環境。 Can be seen that the VRML into the development of online virtual laboratory process, can enhance performance and user acceptance, but also work together to achieve a better virtual environment. 3.4 ASP技術ASP(Active Server Pages,動態伺服器端網頁),內含在Internet Information Server 3.0及其以上版本中,提供一個伺服器端的腳本環境,用於產生和執行動態、高效率的網路伺服器應用程序。 3.4 ASP technology ASP (Active Server Pages, Dynamic server-side page), including in the Internet Information Server 3.0 and above versions, to provide a server-side scripting environment for the generation and implementation of dynamic and efficient web server applications. ASP不只是動態的網頁,它更是當今眾多的Web應用程序實作方式之一,它負責整個Web應用程序的控制部分。 ASP pages not only dynamic, it is today a large number of Web applications is one of the ways to make, which is responsible for the entire Web application control part. ASP提供五個內建的對象供使用者調用,即Re?鄄quest對象(取得用戶信息)、Response對象(傳送信息給用戶)、Server對象(提供訪問伺服器的方法、屬性)、Application對象(用於多個使用者在多個網頁間共享信息)和Session對象(用於單個使用者在多個網頁間共享信息)。 ASP provides a total of five built-in objects for users to call, that is, Re? Juan quest object (to obtain user information), Response object (to send information to the user), Server object (the server to provide access methods, properties), Application object (with in a variety of users to share information between multiple pages) and the Session object (for indivial users to share information between multiple pages). 4 網路虛擬實驗室開發過程當中應注意的幾個問題計算機軟體技術發展到今天,為虛擬實驗室開發提供了極大的方便。 4 virtual laboratory network development process should pay attention to several issues of the development of computer software technology to today, for the development of virtual laboratory provides great convenience. 目前開發所需的系統軟體或工具均支持面向對象的程序設計。 At present, the development of the necessary system software or tools to support object-oriented programming. 它們都有事件驅動的支持,消息循環的程序設計方法及多媒體操作技術。 They have the support of event-driven news cycle of programming and multimedia skills. 在開發過程當中要注意以下幾個問題:事件觸發時機的選擇,實際操作當中某個按鈕按下後並不立即反映,需要延時回應,外部介面的輸入信號或其它信息往往是定時觸發或隨機觸發的事件,若為隨機觸發的事件則可用一定時限內的隨機數來取代固定時間。 In the development process should pay attention to the following questions: Event trigger timing, the actual operation of them after a button press does not immediately reflect the need to delay response to the external interface of the input signal or other information from time to time is often triggered or random trigger events, if the random trigger events are available for a certain period of time the random number to replace the fixed time. 事件聯鎖關系或動態順序關系可以存放在一張資料庫表中描述,修改方便。 Interlocking relationship between events or dynamic order can be stored in a database table is described, modify convenience. 給定相應的條件、控制范圍,自動形成數據表,使數據和程序獨立。 Given the appropriate conditions, control, data tables automatically, so that an independent data and programs. 模擬聲音,要使實驗達到逼真,除了模擬控制台實物景象,還要模擬它們實驗環境中的各種聲音,如汽笛聲、按鈕按動聲、內部機械動作聲等。 Analog voice, to achieve the realistic experiment, in addition to the physical simulation of the console scene, but also simulation of their experimental sounds in the environment, such as the whistle sound, the sound button pressed, the internal mechanical action, such as sound. 這樣,才能使學生在實驗室有身臨其境的感覺,全身心地投入學習。 In this way can help students in the laboratory are immersive feeling, to fully participate in the study. 模擬檯面各種動作的結果,檯面上每個控制項的動作都會觸發一定的事件。 Simulation results of the table a variety of movements, control the movements of each table will trigger a certain event. 這些事件在實物設備中是靠機械、電子電路等去完成,而現在將這些機械及電子邏輯關系使用計算機軟體實現。 These events in the physical devices by mechanical, electronic circuits, such as to complete, and now to the relationship between mechanical and electronic logic using computer software. 故障發生器,在實際工作中除了設備正常情況下的操作,還有各種意外情況,如某些設備故障的情況。 Fault generator, in practical work in addition to equipment operation under normal circumstances, there are a variety of unforeseen circumstances, such as the failure of some equipment. 此時,要求在虛擬系統中也能模擬手柄失靈、儀表信號不顯示及自然災害發生的情況等,即給實驗增加一些難度,強化學生實際操作能力。 At this point, the request in a virtual simulation system can also handle failures, instrument signals and do not show the case of natural disasters and so on, that is, to increase the difficulty of the experiment, the actual operation to strengthen the capacity of students. 5 結束語虛擬實驗技術在實驗教學中具有廣闊的應用、發展前景,隨著虛擬實驗的普及,其優越性會被越來越多的人認識。 5 Conclusion virtual experiment in teaching experiments have broad applications, development prospects, with the popularity of virtual experiments, and its advantages will be more and more people are aware of. 但要使虛擬實驗技術真正得到推廣應用,關鍵還是觀念的改變,首先是教師觀念的改變,除了具有創新精神和能力外,還應有一個科學的投資理念,在實驗室建設和發展中,充分考慮投資效益,建設現代化的實驗室。 But for the virtual experiment really promote the use of technology, the key is to change the concept, first of all, the concept of change in teachers, in addition to the spirit of innovation and capacity, there should be a scientific concept of investment, construction and development in the laboratory, the full consider the investment returns and building a modern laboratory. 其次要培養一支高素質的實驗隊伍,不斷地進行知識更新,加強學習,重視信息的收集、加工、應用,了解掌握最新技術,促進實驗教學發展。 Second, we must cultivate a high-quality experimental team, continually update their knowledge to enhance learning, importance of information collection, processing, application, understand the latest technology, and promote the development of experimental teaching. 虛擬實驗的應用和發展,加快了實驗室發展和實驗教學改革,促進了教育觀念的改變。 Application of the virtual experiment and development, to accelerate the development and experimental laboratory teaching reform, the promotion of ecation to change attitudes. 是培養創新人才的新的實驗手段。 Is to train innovative talents of the new experimental tools. 虛擬實驗在21世紀實驗教學中必將佔有重要地位,無疑會起到很大的作用。 Virtual experiment experimental teaching in the 21st century will certainly occupy an important position, will undoubtedly play a significant role.

網路安全實驗室的網路安全實驗室介紹

實驗室宗旨是:在遵守憲法、法律、法規和國家政策,遵守社會道德風尚的基礎上,根據雲南省發展信息產業的需要,充分發揮計算機安全管理部門與計算機用戶之間的橋梁作用;協助主管機關規范和加強計算機安全保護工作,促進計算機網路安全技術的發展以及提高網路用戶的安全意識,維護我省公共信息網路的安全,保障信息的社會化和產業化的健康發展。
實驗室是在雲南省民政廳依法登記的法人團體,業務主管部門是雲南省公安廳;在行業業務工作中接受雲南省公安廳、雲南省民政廳的業務指導和監督管理。

③ 雲和網路安全教學實訓室是干什麼

主要是信息安全方面的「教「、「學「、「練「一體的
開放式實訓。

④ 網路安全實驗室需要哪些設備

1000兆交換機,高端路由器,伺服器,pc(全1000兆網卡)性能要好,模擬攻擊。

⑤ 網路安全實驗室的網路安全實驗室法律聲明

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⑥ ielab網路實驗室 MUX VLAN 、 埠隔離 、 埠安全簡述

MUX VLAN

(Multiplex VLAN )提供了一種通過VLAN進行網路資源控制的機制。通過MUX VLAN提供的二層流量隔離的機制可以實現企業內部員工之間互相通信,而企業外來訪客之間的互訪是隔離的。

為了實現報文之間的二層隔離,用戶可以將不同的埠加入不同的VLAN,但這樣會浪費有限的VLAN資源。採用埠隔離功能,可以實現同-VLAN內埠之間的隔離。

在安全性要求較高的網路中,交換機可以開啟埠安全功能,禁止非法MAC地址設備接入網路;當學習到的MAC地址數量達到上限後不再學習新的MAC地址,只到MAC地址的設備通信。

1、MUX VLAN:

對於企業來說。希望企業內部員工之間可以互相訪問,而企業外來訪客之間是隔離的,可通過配置每個訪客使用不同的VLAN來實現。但如果企業擁有大量的外來訪客員工,此時不但需要耗費大量的VLAN ID,還增加了網路維護的難度。MUX VLAN提供的二層流量隔離的機制可以實現企業內部員工之間互相通信,而企業外來訪客之間的互訪是隔離的。

MUX VLAN分為主VLAN和從VLAN,從VLAN又分為隔離型從VLAN和互通型從VLAN。

主VLAN(Principal VLAN):Principal port可以和MUX VLAN內的所有介面進行通信。

隔離型從VLAN(Separate VLAN):Separate port只能和Principal port進行通信,和其他類型的介面實現完全隔離。

每個隔離型從VLAN必須綁定一個主VLAN。

互通型從VLAN(Group VLAN):Group port可以和Principal port進行通信,在同一組內的介面也可互相通信,但不能和其他組介面或Separate port通信。每個互通型從VLAN必須綁定一個主VLAN。

2、埠隔離

埠隔離分為二層隔離三層互通和二層三層都隔離兩種模式:

如果用戶希望隔離同一VLAN內的廣播報文,但是不同埠下的用戶還可以進行三層通信,則可以將隔離模式設置為二層隔離三層互通;

如果用戶希望同一vlan不同埠下用戶徹底無法通信,則可以將隔離模式配置為二層三層均隔離。

埠隔離技術也有缺點,一是計算機之間共享不能實現;二是隔離只能在一台交換機上實現,不能在堆疊交換機之間實現,如果是堆疊環境,只能改成交換機之間 級連 。

[if !supportLists]3、[endif]埠安全

如果說網路中存在非法用戶時,可以使用埠安全技術保證網路的安全。一般使用在如下場景:①應用在介面層設備:通過配置埠安全可以防止仿冒用戶從其他埠攻擊;②應用在匯聚層設備,通過配置埠安全可以控制接入用戶的數量。

埠安全(Port Security),從基本原理上講,Port Security特性會通過 MAC地址表 記錄連接到 交換機 埠的 乙太網 MAC地址 ,並只允許某個MAC地址通過本埠通信。其他MAC地址發送的數據包通過此埠時,埠安全特性會阻止它。使用埠安全特性可以防止未經允許的設備訪問網路,並增強安全性。另外,埠安全特性也可用於防止MAC地址 泛洪 造成MAC地址表填滿。

埠安全的類型:

埠安全( Port Security )通過將介面學習到的動態MAC地址轉換為安全MAC地址(包括安全動態MAC、安全靜態MAC和Sticky MAC )阻止非法用戶通過本介面和交換機通信,從而增強設備的安全性。

1、介面使能埠安全功能時,介面上之前學習到的動態MAC地址表項將被刪除,之後學習到的MAC地址將變為安全動態MAC地址。

2、介面使能Sticky MAC功能時,介面上的安全動態MAC地址表項將轉化為StickyMAC地址,之後學習到的MAC地址也變為Sticky MAC地址。

3、介面去使能埠安全功能時,介面上的安全動態MAC地址將被刪除,重新學習動態MAC地址。

4、介面去使能Sticky MAC功能時,介面上的Sticky MAC地址會轉換為安全動態MAC地址。

超過安全MAC地址限制後得到的動作:

介面上安全MAC地址數達到限制後,如果收到源MAC地址不存在的報文,埠安全則認為有非法用戶攻擊,就會根據配置的動作對介面做保護處理。預設情況下,保護動作是restrict。

Restrict:丟棄源MAC地址不存在的報文並上報警。推薦使用該動作。註:設備收到非法MAC地址的報文時,每30s至少警告1次,至多警告2次。

Protect:只丟棄源MAC地址不存在的報文,不上告報警。

Shutdown:介面狀態被置為error-down,並上報告警。 默認情況下,介面關閉後不會自動恢復,只能由管理員手動恢復。