浅析计算机网络安全(英文-含中文翻译)
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计算机网络安全与防范外文翻译文献(文档含中英文对照即英文原文和中文翻译)翻译:计算机网络安全与防范1.1引言计算机技术的飞速发展提供了一定的技术保障,这意味着计算机应用已经渗透到社会的各个领域。
在同一时间,巨大的进步和网络技术的普及,社会带来了巨大的经济利润。
然而,在破坏和攻击计算机信息系统的方法已经改变了很多的网络环境下,网络安全问题逐渐成为计算机安全的主流。
1.2网络安全1.2.1计算机网络安全的概念和特点计算机网络的安全性被认为是一个综合性的课题,由不同的人,包括计算机科学、网络技术、通讯技术、信息安全技术、应用数学、信息理论组成。
作为一个系统性的概念,网络的安全性由物理安全、软件安全、信息安全和流通安全组成。
从本质上讲,网络安全是指互联网信息安全。
一般来说,安全性、集成性、可用性、可控性是关系到网络信息的相关理论和技术,属于计算机网络安全的研究领域。
相反,狭隘“网络信息安全”是指网络安全,这是指保护信息秘密和集成,使用窃听、伪装、欺骗和篡夺系统的安全性漏洞等手段,避免非法活动的相关信息的安全性。
总之,我们可以保护用户利益和验证用户的隐私。
计算机网络安全有保密性、完整性、真实性、可靠性、可用性、非抵赖性和可控性的特点。
隐私是指网络信息不会被泄露给非授权用户、实体或程序,但是授权的用户除外,例如,电子邮件仅仅是由收件人打开,其他任何人都不允许私自这样做。
隐私通过网络信息传输时,需要得到安全保证。
积极的解决方案可能会加密管理信息。
虽然可以拦截,但它只是没有任何重要意义的乱码。
完整性是指网络信息可以保持不被修改、破坏,并在存储和传输过程中丢失。
诚信保证网络的真实性,这意味着如果信息是由第三方或未经授权的人检查,内容仍然是真实的和没有被改变的。
因此保持完整性是信息安全的基本要求。
可靠性信息的真实性主要是确认信息所有者和发件人的身份。
可靠性表明该系统能够在规定的时间和条件下完成相关的功能。
这是所有的网络信息系统的建立和运作的基本目标。
高一必修二作文网络安全英文(中英文版)Title: The Importance of Cybersecurity: A Composition for High School Students in Compulsory Course IIIn the digital age, cybersecurity has become an increasingly significant concern that cannot be overlooked.With the prevalent use of the internet, the vulnerability of our personal information has never been more pronounced.It is imperative for high school students, as digital natives, to comprehend the gravity of this issue and take necessary precautions.在数字化时代,网络安全已经成为一个日益重要、不容忽视的问题。
随着互联网的广泛应用,我们的个人信息暴露在极大的风险之中。
作为数字时代原住民的高中生,必须深刻理解这一问题的严重性,并采取必要的预防措施。
The array of risks lurking online ranges from identity theft to data breaches, from phishing scams to malicious software.The convenience of technology comes with a price, and that is the potential exposure to these cyber threats.Therefore, it is crucial to cultivate good cybersecurity habits to safeguard our digital lives.网络中潜藏的风险多种多样,从身份盗窃到数据泄露,从网络钓鱼诈骗到恶意软件。
毕业论文英文文献翻译--计算机网络安全浅析(5篇)第一篇:毕业论文英文文献翻译--计算机网络安全浅析计算机网络安全浅析摘要:针对计算机网络系统存在的安全性和可靠性问题,本文从网络安全的重要性、理论基础、具备功能以及解决措施等方面提出一些见解,并且进行了详细阐述,以使广大用户在计算机网络方面增强安全防范意识。
关键词:计算机网络虚拟专用网技术加密技术防火墙引言:随着计算机网络技术的发展,网络的安全性和可靠性已成为不同使用层次的用户共同关心的问题。
人们都希望自己的网络系统能够更加可靠地运行,不受外来入侵者干扰和破坏。
所以解决好网络的安全性和可靠性问题,是保证网络正常运行的前提和保障。
一、网络安全的重要性。
在信息化飞速发展的今天,计算机网络得到了广泛应用,但随着网络之间的信息传输量的急剧增长,一些机构和部门在得益于网络加快业务运作的同时,其上网的数据也遭到了不同程度的攻击和破坏。
攻击者可以窃听网络上的信息,窃取用户的口令、数据库的信息;还可以篡改数据库内容,伪造用户身份,否认自己的签名。
更有甚者,攻击者可以删除数据库内容,摧毁网络节点,释放计算机病毒等等。
这致使数据的安全性和自身的利益受到了严重的威胁。
根据美国FBI (美国联邦调查局)的调查,美国每年因为网络安全造成的经济损失超过170 亿美元。
75的公司报告财政损失是由于计算机系统的安全问题造成的。
超过50的安全威胁来自内部。
而仅有59的损失可以定量估算。
在中国,针对银行、证券等金融领域的计算机系统的安全问题所造成的经济损失金额已高达数亿元,针对其他行业的网络安全威胁也时有发生。
由此可见,无论是有意的攻击,还是无意的误操作,都将会给系统带来不可估量的损失。
所以,计算机网络必须有足够强的安全措施。
无论是在局域网还是在广域网中,网络的安全措施应是能全方位地针对各种不同的威胁和脆弱性,这样才能确保网络信息的保密性、完整性和可用性。
二、网络安全的理论基础。
国际标准化组织(ISO)曾建议计算机安全的定义为:“计算机系统要保护其硬件、数据不被偶然或故意地泄露、更改和破坏。
网络安全小作文英语带翻译In today's digital age, the internet has become an integral part of our lives. With the increasing reliance on technology, it is important to ensure that we are aware of the potential risks associated with using the internet. In this essay, we will discuss the importance of internet security and ways to protect ourselves online.首先,网络安全非常重要。
随着越来越多的人使用互联网进行日常活动,如购物、社交和银行业务,我们需要确保我们的个人信息和财务信息得到保护。
网络犯罪活动不断增加,包括网络欺诈、网络钓鱼和恶意软件攻击,这些都可能导致我们的个人信息被盗取或财务损失。
To protect ourselves from these risks, there are several steps we can take. First, we should always use strong passwords and change them frequently. This will make it more difficult for hackers to gain access to our accounts. Second, we should be careful when clicking on links or downloading attachments from unknown sources.These could contain malware or viruses that can harm our devices or steal our information. Third, we should use antivirus software and keep it up-to-date to protect against known threats.为了保护我们免受这些风险的侵害,我们可以采取以下几个步骤。
浅析计算机网络安全(英文-含中文翻译)X X X X 学院计算机专业英语班级计科学号 12姓名日期 2015-12-Security of Computer Network System Abstract: This paper discussed the secure and dependable problem about the computer network system. On some aspects: the importance of network security basic theory function and the method of solving a problem etc. Good views for solving the problem are put forward. It strengthens people’s consciousness on network security.Key words: Computer network Virtual private network Encryption techniques FirewallIntroduction: Along with the computer network technology development the network security and the reliability have become the question of common interest by all users. The people all hoped their own network system can move reliably not external intruder disturbance and destruction .Therefore solves the network security and the reliable problem carefully is a guarantee the network normal operation’s premise and safeguard.First: the importance of the network security. With the information developing fast today the computer network obtained the widespread application but along with the network information transmission capacity growing faster some organizations and departments benefit the speed up with the service operation in the network while the data has also sufferedto extent attack and destruction. The aggressor may intercept the information in the network steals the user’s password the database information also may tamper with the database content the forge users status denies own signature. And what is more the aggressor may delete the database content the destroy node releases computer virus and so on. This cause data security and own benefit have received the serious threat. According to American FBI US Federal Bureau of Investigation invest the network security creates the economic loss surpasses 17 billion dollars every year.75 corporation report financeloss is because the computer system security problem creates. More than 50 safe threat come from inside. But only 59 loss could be possible estimate. In China the economic loss amount in view of financial domain and the bank negotiable securities computer system security problems creates has reached as high as several hundred million Yuan also sometimes occurs in view of other profession network security threat. Thus it can be seen regardless of is the mean attack or unconscious disoperation will all be able to bring the inestimable loss to the system. Therefore the computer network must have the enough strong security measure. Regardless of is in the local area network or in WAN the network security measure should be Omni-directional in view of each kind of different threat and the vulnerability so that it can guarantee the network information’s secrecy the integrity and the usability. Second: Network security rationale. International Standardization Organization ISO once suggested the computer security the definition was: “The computer system must protect its hardware the data not accidentally or reveals intentionally the change and the destruction.”In order to help the computer user discriminationand the solution computer network security problem the American Department of Defense announced “the orange peel book”orange book official name is “credible computer system standard appraisal criterion” has carried on the stipulation to the multiuser computer system security rank division. The orange peel book from low to high divides into the computer security four kinds of seven levels: D1 C1 C2 B1 B2 B3 A1.Above allD1 level does not have the lowest safety margin rank C1 and the C2 level has the lowest safety margin rank B1 and the B2 level has the medium safekeeping of security ability rank B3 and A1 belongs to the highest security rating. In the network concrete design process it should act according to each technology standard the equipment typethe performance requirement as well as the funds which in the network overall plan proposed and so on the overall evaluation determines one quite reasonably the performance high network security rank thus realization network security and reliability.Third: The network security should have function. In order to adapt the information technology development well the computer network application system must have following function: 1 Access control: Through to the specific webpage the service establishment access control system in arrives the overwhelming majority attack impediment in front of the attack goal. 2 Inspects the security loophole: Through to security loophole cyclical inspection even if attacks may get the attack goal also may cause the overwhelming majority attack to be invalid. 3 Attack monitoring: Through to specific webpage service establishment attack monitoring system but real-time examines the overwhelming majority attack and adopts the response themotion for example separation network connection recording attack process pursuit attack source and so on. 4 Encryption Communication: Encrypts on own initiative the communication may enable the aggressor to understand the revision sensitive information. 5 Authentication: The good authentication system may prevent the aggressor pretends the validated user. 6 Backup and restoration: The good backup and restores the mechanism may causes the losses when the attack as soon as possible restores the data and the system service. 7 Multi-layered Defense: The aggressor after breaks through the first defense line delays or blocks it to reach the attack goal. 8 Sets up the safe monitoring center: Provides the security system management the monitoring the protection and the emergency case service for the information system. Fourth: The network system safety comprehensive solution measures. If want to realize the network security function we should carry on theOmni-directional guarding to the network system and thus formulate the quite reasonable network security architecture. Below on the network system security problem proposes some guard measure. Physics safe may divide into two aspects: One is the artificial harm to the network the other is the network to the users. Most common thing is the constructor who did not understand to the buried cable clearly thus lead to the destruction of electric cable this kind of situation may through standing symbolized the sign guards against Has not used the structure wiring the network to be able to appear the user frequently to the electric cable damage this needs to use the structure wiring to install the network as far as possible Artificial or natural disaster influence when to consider the plan. The access control security the access control distinguishes andconfirms the user limits the user in the already activity and the resources scope which is authorized. The network access control safe may consider from following several aspects.1 password: The network security system most outer layer defense line is network users registering in the registration process the system would inspect the user to register the name and the password validity only then the legitimate user can enter the system.2 The network resources’host the attribute and the visit jurisdiction: The network resources mainly include the resources which shared files the shared printer network users and so on that all the network users can use. The resources were the host to manifest the different user to the resources subordinate relations such as builder modifier and group member and so on. The resources attribute expressed itself deposit and withdrawal characteristics as can read by who write or the execution and so on. The visit jurisdiction mainly manifests in the user to the network resources available degree in using assigns the network resources to be the host the attribute and the visit jurisdiction mayeffectively in the application cascade control network system security.3 Network security surveillance: The network surveillance is generally called for “the network management” its function mainly is carries on the dynamic surveillance to the entire network movement and handles each kind of event promptly. May understand simply through the network surveillance discovers and solves in the network security problem such as the localization network fault point seizes the IP embezzler the control network visit scope and so on.4 Audit and track: Network audit and track which is including the network aspect resources use network breakdown and system keeping. It composed generally by two parts: One the recording event soon each kind of event entirely records in the document. Two carries on the analysis and the statistics to.Data transmission security, transmission security requirements to protect the information on the network is transmitted to prevent the passive and active violations. The security of data transmission can take the following measures: (1) encryption and digital signature: digital signature is the receiver of data used to confirm the sender of the data is true and correct.(2) firewall: firewall (Firewall) is a security measure that is widely used in Internet. It can be used to set up a series of components in different network or network security domain. It can detect, limit and change the data flow of the firewall, and detect the information, structure and running status of the network as far as possible, so as to realize the network security. (3) Username or Password certification: the authentication method is the most commonly used as an authentication method for the operating system, telnet (remote login), rlogin (remote login), but the process is not encrypted, that is, password is easy to be monitored and decryption.(4) authentication using the algorithm: radius (Remote Authentication Dial protocol, OSPF (open routing protocol), SNMP Security Protocoluse shared Security Key (key), and the abstract algorithm (MD5) certification, but abstract algorithm is an irreversible process, therefore, in the authentication process, by the information cannot be calculated Security Key shared, so the sensitive information in the network transmission. The algorithmis mainly used on the market are mainly MD5 and SHA - 1. (5) authentication and encryption based on PKI: using PKI (public key system). This method has a high security level, which is integrated with the technology of the algorithm, asymmetric encryption, symmetric encryption, digital signature, and so on. This authentication method is currently used in the fields of email, application server access, customer authentication, firewall authentication, etc.. This kind of authentication method is very safe, but it involves a relatively heavy certificate management task. (6) virtual private network (VPN) technology: VPN technology mainly provides two-way communication in the public security, the transparent encryption scheme to ensure data integrity and confidentiality.In summary, for the security of computer network transmission, we must do the following. First, we should strictly limit access to the Internet users of the system information and resources, this function can be achieved by setting the Net Screen firewall on the access server. Second, we should strengthen the identity authentication of Internet users, using RADIUS and other special authentication server. On the one hand, it can achieve the unified management of Internet users account; on the other hand, in the process of identity verification using encryption means to avoid the possibility of leakage of the account. Third: The use of encryption technology in the process of data transmission, to prevent data theft. One way is to use for Business Security PGP to encrypt data. Another approach is to use the VPN technology provided by Net Screen firewall. VPN in the provision ofnetwork data encryption, but also provides a single user of the encryption software, that is, the use of software encryptiontechnology to ensure the security of data transmission.浅析计算机网络安全摘要:针对计算机网络系统存在的安全性和可靠性问题,本文从网络安全的重要性、理论基础、具备功能以及解决措施等方面提出一些见解,并且进行了详细的阐述,以使广大用户在计算机网络方面提高安全防范意识。
网络安全英语小作文及翻译Title: Importance of Cybersecurity in the ModernDigital Landscape。
With the rapid advancement of technology, the importance of cybersecurity cannot be overstated. Intoday's interconnected world, where information is exchanged at the click of a button, ensuring the security of data and networks is paramount. Cybersecurity refers to the practice of protecting systems, networks, and data from digital attacks. These attacks can come in various forms, such as malware, phishing, ransomware, and denial-of-service attacks, among others.首先,网络安全对于保护个人隐私至关重要。
在数字化时代,我们的个人信息如社交媒体账户、银行信息、健康记录等都存储在网络上。
如果这些信息被黑客窃取,可能会导致严重的后果,包括财务损失、身份盗窃、甚至个人安全受到威胁。
因此,加强网络安全措施,确保个人隐私不受侵犯,至关重要。
Secondly, cybersecurity is crucial for safeguarding businesses and organizations. In today's digital economy, companies rely heavily on digital systems to storesensitive information, conduct transactions, and communicate with clients and partners. A cyber-attack on a business can result in financial losses, damage to reputation, and even legal consequences. Therefore, investing in robust cybersecurity measures is essential for protecting intellectual property, trade secrets, and the overall integrity of the organization.Thirdly, cybersecurity plays a vital role in national security. Governments around the world store vast amounts of sensitive information, including classified documents, infrastructure plans, and military strategies, on digital systems. A breach of these systems can compromise not only national security but also the safety of citizens. Additionally, cyber-attacks can be used as a tool for espionage, sabotage, and warfare between nations. Thus, ensuring the cybersecurity of government networks iscrucial for protecting the interests of the state and maintaining geopolitical stability.In conclusion, cybersecurity is essential in the modern digital landscape to protect personal privacy, secure businesses and organizations, and safeguard national security. It requires a comprehensive approach involving technology, policies, and awareness among users. By investing in robust cybersecurity measures and staying vigilant against emerging threats, we can mitigate therisks posed by cyber-attacks and build a safer and more secure digital world.。
计算机网络安全计算机网络安全(Computer Network Security)指的是保护计算机网络系统的完整性、可用性和可靠性,以及防止未经授权使用、修改或销毁计算机网络中的信息。
随着网络的快速发展和普及,网络安全问题也日益突出。
本文将介绍计算机网络安全的基本概念、威胁与攻击类型以及常见的安全措施。
一、基本概念1.1 计算机网络安全的定义计算机网络安全是指为了保证计算机网络系统中的硬件、软件和通信链路等各个方面不受非法侵入、破坏和篡改,使得网络能够提供稳定、安全和可靠的服务。
1.2 计算机网络安全的重要性计算机网络安全对系统正常运行和信息安全起到至关重要的作用。
一旦网络遭受入侵、攻击或者病毒感染,将会导致信息泄露、数据丢失、网络瘫痪等严重后果,甚至会给个人、企业和国家带来巨大的损失。
二、威胁与攻击类型2.1 黑客攻击黑客攻击是最常见的一种网络安全威胁,指的是利用各种手段非法侵入计算机网络系统,获取未授权的信息、修改系统配置或者破坏系统功能。
2.2 病毒和蠕虫攻击病毒和蠕虫攻击通过在计算机或者网络上传播恶意代码,导致系统瘫痪、数据丢失以及个人信息被窃取等问题。
2.3 信息泄露信息泄露是指未经授权的个人、企业或者组织故意或者失误地将敏感信息传递给不相关的人或者机构,从而导致信息的泄露。
2.4 DDoS攻击DDoS攻击(Distributed Denial of Service)指的是通过占用大量计算机的网络资源或者发送大量无效请求,使目标系统无法正常提供服务。
三、常见的安全措施3.1 防火墙防火墙(Firewall)是计算机网络中用于监控网络流量,筛选和拦截恶意入侵和攻击的网络安全设备。
它可以根据预先设定的规则,阻止未经授权的访问和传输。
3.2 加密技术加密技术是一种通过对数据进行编码和解码,以保证数据传输过程中的机密性和完整性的安全措施。
常见的加密算法有AES、DES等。
3.3 安全认证与访问控制安全认证与访问控制是通过对用户身份进行验证、权限管理和访问限制,防止未经授权的用户访问系统资源。
Computer network virus and precautionsWith the new network technology and application of the continuous rapid development of the computer network shouldUse of becoming increasingly widespread, the role played by the increasingly important computer networks and humanMore inseparable from the lives of the community's reliance on them will keep growing. WithWith the continuous development of computer technology, the virus has become increasingly complex and senior, the new generation ofComputer viruses make full use of certain commonly used operating systems and application software for protection of the weak lowSpots have rampant in recent years as the popularity of the Internet in the world, will be attached document containing the virusThe situation in the mail has been increasing spread of the virus through the Internet, making the spread of the virus speedSharp also increased, by an ever-increasing scope of the infection. Therefore, the protection of the security of computer networks will beWill become increasingly important.A computer virusThe definition of computer virus computer virus (Computer Virus) in the "people's republic of ChinaThe computer information system security protection regulations "which has been clearly defined, the virus" refers to the preparation orComputer program inserted in the damage or destruction of computer data functions, affecting computer useSelf-replication and can a group of computer instructions, or code. " Second, network virusWith the development of network and the Internet, a wider spread, the greater New harmThe virus emerged This is the Internet virus. The virus is an emerging concept in the traditionalThe virus was not classified network virus this concept, because the development of networks, the traditional virusThe network also has a number of characteristics. Today's Internet virus is a broad notion of aAs as long as it is carried out using the Internet to spread destruction can be known as network viruses, such as:"Love the back door", "Panda burning incense."Third, network virus and the distinction between computer virusThe original common computer virus is nothing more than the devastating formatted hard drive, delete systemWith the users documents, databases, etc. destruction. The mode of transmission is through nothing but also by virus infectionMutual copy of the software, carrying the virus, such as the use of pirated optical discs, such as infection disk systemsThe pilot virus and infected executable file virus, in addition to a network virus These are the common characteristics of the virus, but also steal users with remote data, remote control of the other sideComputers and other damaged properties, such as Trojan and consumption of funding the operation of the network computerSource collapse of the network server worm.Fourth, the network against virusNetwork destructive virus, will directly affect the work of the network, ranging from lowering speed videoRing for the efficiency of the network, while in the collapse, undermining the server information to a multi-year work destroyedDan. Because viruses and other network annually fraud led to economic losses of over 16 billion yuan,But this figure is constantly rising year by year. The next few years, the size of the market will reach Security60 billion yuan. One antivirus software experts pointed out: "Network avian flu virus even more." Such as: "XiongCat burning incense "In addition to virus infection through the web site users, the latest virus also through QQLoopholes in propagating itself through file-sharing networks, the default sharing, weak password systems, U disk and windowsForms bottom of the top mobile hard drives, and other means of communication. While LAN once a computer machineFor infection, it can spread through the entire network instant, or even within a very short period of time can be infectedThousands of computers, can lead to serious networks. Symptoms of poisoning in the performance of computersThere are enforceable. Exe files have become a strange pattern, the pattern shown as "PandaBurning incense, "and then System blue screen, restart the frequent, hard drive data destruction, serious entire companyAll computer LAN will all poisoning. "Panda burning incense," only more than half a month, a few varieties have highOf more than 50, and the number of its users infected constantly expanding. Makes infected, "Panda burn incense" diseaseThe personal drug users has been as high as several million people infected with a few more corporate users is rising exponentially. NetworkMore on the computer network the greater the harm caused by the virus.V. network transmission of the virus Features1. Infection fast: single machine environment, the virus can only be passed from one computer disketteTo another, and in the network can be adopted by the rapid spread of network communication mechanism. According to measurementSet against a typical PC network use in normal circumstances, once a computer workstation sickDrugs, and will be online within 10 minutes in the several hundreds of all infected computers.2. Proliferation of a wide range: in the network due to the spread of the virus very quickly and spread to encompass a large area, not only the rapid transmission of all LAN computer, but also through remote workstations virus in一瞬Inter spread to thousands of miles away.3. Dissemination in the form of complex and varied: computer viruses in general through the network "Station server workstation "channels of communication, but in the form of complex and diverse communication.4. Difficult to completely wipe: the standalone computer virus carriers sometimes can be deleted documentsOr low-level formatted drives, and other measures to eliminate the virus completely, and the network once a computer workClean stations failed to disinfect the entire network can be re-infected by the virus, or even just completed removalThe work of a workstation is likely to be on-line by another workstation virus infection. Therefore,Only workstations in addition to killing viruses, and can not solve the virus harm to the network is.6, the type of network virusAs the network increasingly developed, the type of network virus has been increasing, generally summed up asThe following categories:1. WormIt is the use of the transmission mechanism of replication and dissemination network, the mode of transmission is through the networkAnd e-mail, the prefix is Worm. For example, in recent years the great harm "Nimda" virus is DemodexA worm virus. The virus used Microsoft's Windows operating system, computer fluWith this virus, will continue to automatically dial-up Internet access and use information in the document or the addressSharing network spreads, and ultimately undermine the most important user data.2. Macro VirusHong virus is a Storage in the document or template in the Acer computer virus. The prefixMacro, once open such documents, which Acer will be implemented, then the virus would AcerBeen enabled transferred to the computer, and in the presence of the Normal template. From then on, all sinceThe document will be kept moving "infection" that the Hong virus, and if other users opened the fluDocuments with the virus, the Hong virus will be transferred to his computer. 3. Destructive procedures virusThe prefix destructive virus program is: Harm. The characteristics of this virus is a good in itselfLook at the user clicks on icons to temptation, when the user clicks on the virus, the virus will direct usersComputer generated destruction. If C formatted disk (Harm.formatC.f), the killer orders (Harm.Command.Killer).4. System virusThe prefix system for the virus: Win32, PE, Win95, W32, W95, and so on. These virusesThe characteristics of the general public can be infected with the windows operating system *. exe and *. dll file,And through these documents for dissemination. If the CIH virus.5. Backdoor virusBackdoor virus prefix is Backdoor. The total of such virus through network - Sowing, opened the back door to the system to the user and potential safety problems.6. Bundling machine virusBundled-virus prefix is: Binder. The characteristics of this virus is the virus writers will useSpecific procedures will be bundled with a number of applications such as QQ, IE bundled up on the surfaceIt is normal to see the paper, when users run these bundled virus, will run these applications on the surfaceProcedures, and then tied to the operation of hidden virus, which caused harm to the user. Such as: baledTied QQ (Binder.QQPass.QQBin), the system killer (Binder.killsys).7. Script virusThe virus is usually JavaScript scripting code prepared by the malicious code, prefix is usuallySpript, with the general nature of advertising, will modify your IE Home, modify registry, and other information,Computer user inconvenience caused.8. Planting procedures virus virusThis virus is of the public will run from the in vivo release of one or several newUnder the virus to the system directory, by the release of a new virus damage. If the glaciers are sowing(Dropper.BingHe2.2C), MSN striker (Dropper.Worm.Smibag).9. Joke virusThe prefix is the virus joke: Joke. Also called prank virus. The characteristics of this virus is itself a nice user clicks on icons to temptation,When the user clicks of this virus, the virus will be made to disrupt the operation scare users, in factThe virus did not destroy any computer user. Such as: ghost (Joke.Girlghost) virus.10. Trojan hacking virusTrojan its prefix is: Trojan, hackers virus prefix General for Hack. Public special Sex is through the network or system loopholes into the user's system and hidden, and then leaked to the outside worldUser information, hackers virus there is a visual interface to the user's computer remotelyControl. Trojans, hackers often paired virus emerging, Trojan horse virus responsible for the invasive power usersBrain, and hackers virus will be passed to the Trojan horse virus control. . General Trojan such as QQNews tail Trojan Trojan.QQ3344, there are big Trojan.LMir.PSW.60. Virus FormA PSW or anything like PWD general said that the virus has stolen password function,If some hacker programs, such as network枭雄her.Client.7, the mode of transmission and network anti-virusThrough the above, we can see that e-mail viruses spread Click homepage, users download,Others implant, implant, and other loopholes through five computer transmission, so long as holding these fiveA thoroughfare, we will be able to live better anti-virus network.计算机网络病毒与防范随着各种新的网络技术的不断应用和迅速发展, 计算机网络的应用范围变得越来越广泛, 所起的作用越来越重要, 计算机网络与人类的生活更加密不可分, 社会对其的依赖程度也会随之不断增长。
网络安全的重要性英语作文Cybersecurity is a crucial aspect of our modern society. 网络安全是现代社会的一个关键方面。
As we increasingly rely on the internet for communication, shopping, banking, and various other activities, the protection of our personal information is essential. 随着我们越来越依赖互联网进行沟通、购物、银行业务以及其他各种活动,保护我们的个人信息变得至关重要。
One of the main reasons why cybersecurity is so important is the prevalence of cyber attacks. 网络安全如此重要的一个主要原因是网络攻击的普遍性。
Hackers are constantly looking for vulnerabilities in systems to exploit, whether for financial gain, spying, or simply causing disruption. 黑客们不断寻找系统中的漏洞来实现利益,进行间谍活动或者仅仅是造成混乱。
Furthermore, the interconnected nature of the digital world means that a security breach in one place can have far-reaching consequences. 此外,数字世界的互相连接意味着一个地方的安全漏洞可能会产生深远的影响。
A breach in a critical infrastructure system, such as power grids or transportation networks, could lead to widespreaddisruption and potentially endanger lives. 一些关键基础设施系统的漏洞,比如电力网络或者交通网络,可能会导致广泛的破坏并有可能危及生命。
关于计算机网络数据库安全技术方案浅探On the computer network database security technology scheme of in English论文摘要:随着因特网和数据库技术的迅速发展,网络数据库的安全性问题显得尤为重要,并已经成为现今网络信息系统建设中的一个最为关键的问题。
本文简要概述了现今网络数据库技术所面临的安全性威胁,以此为出发点,对计算机网络数据库安全技术方案进行了相关探讨。
Abstract: with the advent of the Internet and the rapid development of database technology, network database security issues appear particularly important, and has become one of the network information system construction is one of the most critical problem. This article providesa brief overview of current network database technology facing security threats, as a starting point, on the computer network database security technology scheme of.计算机网络环境中的信息存储和管理都是由网络数据库来实现的,而随着计算机网络技术的广泛普及和快速发展,网络数据库的安全性已经成为整个计算机网络安全领域中的一个极为重要的问题。
网络数据库是一种开放环境下的信息仓库,存储着大量非常重要的数据信息,一旦遭受各个方面的不可预测的安全攻击,就将给用户带来不可估量的损失,如此大的安全隐患不得不让我们纳入考虑范畴并加以防范。
X X X X 学院计算机专业英语班级计科学号 12姓名日期 2015-12-Security of Computer Network System Abstract: This paper discussed the secure and dependable problem about the computer network system. On some aspects: the importance of network security basic theory function and the method of solving a problem etc. Good views for solving the problem are put forward. It strengthens people’s consciousness on network security.Key words: Computer network Virtual private network Encryption techniques FirewallIntroduction: Along with the computer network technology development the network security and the reliability have become the question of common interest by all users. The people all hoped their own network system can move reliably not external intruder disturbance and destruction .Therefore solves the network security and the reliable problem carefully is a guarantee the network normal operation’s premise and safeguard.First: the importance of the network security. With the information developing fast today the computer network obtained the widespread application but along with the network information transmission capacity growing faster some organizations and departments benefit the speed up with the service operation in the network while the data has also suffered to extent attack and destruction. The aggressor may intercept the information in the network steals the user’s password the database information also may tamper with the database content the forge users status denies own signature. And what is more the aggressor may delete the database content the destroy node releases computer virus and so on. This cause data security and own benefit have received the serious threat. According to American FBI US Federal Bureau of Investigation invest the network security creates the economic loss surpasses 17 billion dollars every year.75 corporation report financeloss is because the computer system security problem creates. More than 50 safe threat come from inside. But only 59 loss could be possible estimate. In China the economic loss amount in view of financial domain and the bank negotiable securities computer system security problems creates has reached as high as several hundred million Yuan also sometimes occurs in view of other profession network security threat. Thus it can be seen regardless of is the mean attack or unconscious disoperation will all be able to bring the inestimable loss to the system. Therefore the computer network must have the enough strong security measure. Regardless of is in the local area network or in WAN the network security measure should be Omni-directional in view of each kind of different threat and the vulnerability so that it can guarantee the network information’s secrecy the integrity and the usability. Second: Network security rationale. International Standardization Organization ISO once suggested the computer security the definition was: “The computer system must protect its hardware the data not accidentally or reveals intentionally the change and the destruction.”In order to help the computer user discrimination and the solution computer network security problem the American Department of Defense announced “the orange peel book”orange book official name is “credible computer system standard appraisal criterion” has carried on the stipulation to the multiuser computer system security rank division. The orange peel book from low to high divides into the computer security four kinds of seven levels: D1 C1 C2 B1 B2 B3 A1.Above allD1 level does not have the lowest safety margin rank C1 and the C2 level has the lowest safety margin rank B1 and the B2 level has the medium safekeeping of security ability rank B3 and A1 belongs to the highest security rating. In the network concrete design process it should act according to each technology standard the equipment typethe performance requirement as well as the funds which in the network overall plan proposed and so on the overall evaluation determines one quite reasonably the performance high network security rank thus realization network security and reliability.Third: The network security should have function. In order to adapt the information technology development well the computer network application system must have following function: 1 Access control: Through to the specific webpage the service establishment access control system in arrives the overwhelming majority attack impediment in front of the attack goal. 2 Inspects the security loophole: Through to security loophole cyclical inspection even if attacks may get the attack goal also may cause the overwhelming majority attack to be invalid. 3 Attack monitoring: Through to specific webpage service establishment attack monitoring system but real-time examines the overwhelming majority attack and adopts the response the motion for example separation network connection recording attack process pursuit attack source and so on. 4 Encryption Communication: Encrypts on own initiative the communication may enable the aggressor to understand the revision sensitive information. 5 Authentication: The good authentication system may prevent the aggressor pretends the validated user. 6 Backup and restoration: The good backup and restores the mechanism may causes the losses when the attack as soon as possible restores the data and the system service. 7 Multi-layered Defense: The aggressor after breaks through the first defense line delays or blocks it to reach the attack goal. 8 Sets up the safe monitoring center: Provides the security system management the monitoring the protection and the emergency case service for the information system. Fourth: The network system safety comprehensive solution measures. If want to realize the network security function we should carry on theOmni-directional guarding to the network system and thus formulate the quite reasonable network security architecture. Below on the network system security problem proposes some guard measure. Physics safe may divide into two aspects: One is the artificial harm to the network the other is the network to the users. Most common thing is the constructor who did not understand to the buried cable clearly thus lead to the destruction of electric cable this kind of situation may through standing symbolized the sign guards against Has not used the structure wiring the network to be able to appear the user frequently to the electric cable damage this needs to use the structure wiring to install the network as far as possible Artificial or natural disaster influence when to consider the plan. The access control security the access control distinguishes and confirms the user limits the user in the already activity and the resources scope which is authorized. The network access control safe may consider from following several aspects.1 password: The network security system most outer layer defense line is network users registering in the registration process the system would inspect the user to register the name and the password validity only then the legitimate user can enter the system.2 The network resources’host the attribute and the visit jurisdiction: The network resources mainly include the resources which shared files the shared printer network users and so on that all the network users can use. The resources were the host to manifest the different user to the resources subordinate relations such as builder modifier and group member and so on. The resources attribute expressed itself deposit and withdrawal characteristics as can read by who write or the execution and so on. The visit jurisdiction mainly manifests in the user to the network resources available degree in using assigns the network resources to be the host the attribute and the visit jurisdiction mayeffectively in the application cascade control network system security.3 Network security surveillance: The network surveillance is generally called for “the network management” its function mainly is carries on the dynamic surveillance to the entire network movement and handles each kind of event promptly. May understand simply through the network surveillance discovers and solves in the network security problem such as the localization network fault point seizes the IP embezzler the control network visit scope and so on.4 Audit and track: Network audit and track which is including the network aspect resources use network breakdown and system keeping. It composed generally by two parts: One the recording event soon each kind of event entirely records in the document. Two carries on the analysis and the statistics to.Data transmission security, transmission security requirements to protect the information on the network is transmitted to prevent the passive and active violations. The security of data transmission can take the following measures: (1) encryption and digital signature: digital signature is the receiver of data used to confirm the sender of the data is true and correct. (2) firewall: firewall (Firewall) is a security measure that is widely used in Internet. It can be used to set up a series of components in different network or network security domain. It can detect, limit and change the data flow of the firewall, and detect the information, structure and running status of the network as far as possible, so as to realize the network security. (3) Username or Password certification: the authentication method is the most commonly used as an authentication method for the operating system, telnet (remote login), rlogin (remote login), but the process is not encrypted, that is, password is easy to be monitored and decryption.(4) authentication using the algorithm: radius (Remote Authentication Dial protocol, OSPF (open routing protocol), SNMP Security Protocoluse shared Security Key (key), and the abstract algorithm (MD5) certification, but abstract algorithm is an irreversible process, therefore, in the authentication process, by the information cannot be calculated Security Key shared, so the sensitive information in the network transmission. The algorithm is mainly used on the market are mainly MD5 and SHA - 1. (5) authentication and encryption based on PKI: using PKI (public key system). This method has a high security level, which is integrated with the technology of the algorithm, asymmetric encryption, symmetric encryption, digital signature, and so on. This authentication method is currently used in the fields of email, application server access, customer authentication, firewall authentication, etc.. This kind of authentication method is very safe, but it involves a relatively heavy certificate management task. (6) virtual private network (VPN) technology: VPN technology mainly provides two-way communication in the public security, the transparent encryption scheme to ensure data integrity and confidentiality.In summary, for the security of computer network transmission, we must do the following. First, we should strictly limit access to the Internet users of the system information and resources, this function can be achieved by setting the Net Screen firewall on the access server. Second, we should strengthen the identity authentication of Internet users, using RADIUS and other special authentication server. On the one hand, it can achieve the unified management of Internet users account; on the other hand, in the process of identity verification using encryption means to avoid the possibility of leakage of the account. Third: The use of encryption technology in the process of data transmission, to prevent data theft. One way is to use for Business Security PGP to encrypt data. Another approach is to use the VPN technology provided by Net Screen firewall. VPN in the provision ofnetwork data encryption, but also provides a single user of the encryption software, that is, the use of software encryption technology to ensure the security of data transmission.浅析计算机网络安全摘要:针对计算机网络系统存在的安全性和可靠性问题,本文从网络安全的重要性、理论基础、具备功能以及解决措施等方面提出一些见解,并且进行了详细的阐述,以使广大用户在计算机网络方面提高安全防范意识。