留学生作业代写：Information security of computer network and its protection

下面为大家整理一篇优秀的paper代写范文- Information security of computer network and its protection，供大家参考学习，这篇论文讨论了计算机网络信息安全及其防护。虽然计算机一直在飞速发展，但其本身不具有良好的安全以及稳定性，让用户受到了不少威胁。而对于计算机网络信息的安全防护，我们可以使用防火墙对病毒进行拦截，提升计算机的安全防护技术能力。

With the development of computer information technology, this technology has been widely used in many fields of society, which effectively improves the efficiency of information dissemination. However, on the other hand, the development of information technology has caused a series of information security incidents, so people pay more and more attention to the security of computer information. In view of this, this article first carries on the elaboration to the computer network information the risk which suffers, afterwards carries on the analysis to the computer network information security, finally analyzes the computer network information security protection countermeasure.

Today, we have entered the Internet Information Age, computer information technology has been widely used in people's lives and work, has brought great changes to people's lives, so that people's lifestyles have been enriched. However, with the transparency of computer information knowledge, we will encounter various information security problems in the process of using the computer network, although the anti-virus software and the operating system have already realized the reasonable optimization, but this does not enable all problems to be solved effectively, can not realize the true sense of security protection. Therefore, this paper puts forward some protective countermeasures against the information security threat of computer network for reference.

At present, with the continuous development and progress of computer information technology in China, this technology has been widely used in many fields, in order to ensure that people can maximize the use of computer networks, computer networks should have a high degree of openness and not shielding, so that to a large extent, the security of computer networks is threatened. At the same time, because of the security protection of computer network in our country, the measure level is not very high, and many computer networks can log in with simple authentication, although this method can provide greater convenience for people to use computer network, however, for attackers with aggressive network, This way also provides the convenience, makes the computer network security of our country to face the enormous threat, thus it is very difficult to guarantee the computer network security and the stability.

Although, since the advent of computers and computer networks, has been constantly studied and perfected, but can not deny that, whether it is computer, or from the point of view of the computer network, it itself is not good security and stability, and there are different degrees of security problems, And these security issues, although cannot be used by the general public, however, for some people who have malicious attackers, it is easy to find the vulnerabilities that exist in the various degrees, and to exploit these different degrees of vulnerability will seriously destroy the entire computer network information security system, This poses a serious threat to the computer users concerned, causing them to suffer varying degrees of loss.

At present, almost all the people who use computers have experience of computer poisoning, faced with the computer card, slow, and even the situation of the system crashes, although some of the virus with a small threat can be directly using anti-virus software for strangulation, but for some of the more harmful viruses will be disguised, Antivirus software can not be used to kill the computer, thus causing great inconvenience to users. In addition, due to the enrichment of computer language, a variety of viruses in the computer network has been constantly introduced, the computer network information security caused a great threat to operators caused great inconvenience.

The hacker's attack means carries on the analysis, its application means roughly two kinds, the first kind is the information gathers, this is not the direct means, is the following attack means foundation. Attack, will be through the information collection to see what kind of content, there is no more sensitive information, can be through this site to spy information system internal structure; The second is brute force crack means, now have many such tools, cracked various passwords. For example a website has some links, the user will let each other into the database to fetch the data, consumes the server resources will be very big, also has, as long as the point opens the link, may have the data from the cache or the folder to take out.

The information security threat that computer users face in use mainly refers to the use of computer security protection software, not paying enough attention to its security, for example, some users are open to the features that are limited in computer protection software, which makes it easy to implant vicious trojans or viruses in a computer, Therefore, the safety of its impact, but also to a certain extent to the lawless elements to bring opportunities.

The promulgation of the National Security Act has led to a clear requirement for autonomous controllability of critical information infrastructures, providing legal safeguards for the development of key information infrastructure management, protection and inspection. And the introduction of the network security Law, the key Information infrastructure security protection rose to the national strategic level. The network security Law further clarified the scope of national key information infrastructure, laid down the responsibility Division and the way of recovery for the key Information infrastructure security protection, and made the institutional arrangement for key information infrastructure construction requirements, operator obligations, security review, data storage, risk detection and evaluation. Start the "Communication Network security Protection Management Measures" revision work, in view of new situation, further improve the overall level of communication network security assurance, enhance network security incident prevention and protection capabilities.

Firewall as a kind of access control means, mainly in the external network and internal network to form a barrier to prevent the illegal intrusion of external network users, the internal network environment and resources reasonable protection. Depending on the technology adopted, the firewall can be divided into the following four types: first, address conversion type, mainly to the internal IP address to the registration type, to avoid the virus to obtain the correct internal IP address; second, packet filtering, mainly through the packet transmission technology, the packet scanning. If the development of a certain threat, the firewall will be independent interception; third, the monitoring type, mainly to monitor external access. In addition to installing the firewall, the installation of antivirus software is also a protective measure. With the increase of people's awareness of computer network security, anti-virus software types and content is also gradually enriched, such as rising antivirus, Jinshan Antivirus, 360 antivirus, users can install anti-virus software, computer network Information protection, intercept malicious attacks.

To establish the computer network information Industry security standards, telecommunications and the Internet industry has completed the "Fixed communication network security requirements," such as more than 60 communications network security protection standards. Finance, energy and other industries also released the Information system security level protection standards, effectively enhance the industry information system security protection capability and level. To enhance the security protection level of key information infrastructures such as vulnerability mining, intrusion detection and virus prevention, and to break through the new security technologies, such as network mapping, attack tracing and so on, the key information infrastructure is able to resist listening, attack and recovery. For mobile internet, large data, cloud computing, industrial Internet and other new technologies, the establishment of a special security protection strategy, the introduction of a series of standards to enhance the protection technology.

With the development of computer protection technology, detection technology has been applied to computer, the technology is mainly through the detection, to determine whether the computer system and the network has been the precursor of intrusion and abuse. There are two kinds of detection methods used in intrusion detection technology, one for statistical analysis, the other is the theory basis for statistics, the Judgment action mode, the normal or not a certain action is screened, the detection method can guarantee the normal operation of the computer system; and the other is the signature analysis method, It mainly takes the weakness of the attacking system as the object of action to monitor it effectively.

To sum up, to really improve the security of computer network information, we must pay attention to the computer network information security caused the damage factors, and timely to find the corresponding solutions, only the real strengthening of computer network information security and protection measures of the importance of, To maximize the security of the overall computer network information in China.

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