The status of the computer network security and guard against_computer
The status of the computer network security and guard against由刀豆文库小编整理，希望给你工作、学习、生活带来方便，猜你可能喜欢“computer”。
The status of the computer network security and guard against
一、The meaning of the network security
Network security is a data network system hardware、software and systems are protected，suffered destruction due to accidental or malicious reasons、change、disclosure、the system is continuous，reliable and normal operation，Network services are not interrupted。
二、Network security features
Confidentiality： The information is not leaked to non-authorized users、entities or procees，Or for its use in the features。
Integrity： Information storage or transmiion proce remain to be modified、not destroyed and lost features。
Availability： Ability to acce the required information when needed。Denial of service such as network environment、destroy the normal operation of the network and related systems belong to the attack on the availability。
Controllability： Ability to control the diemination of information and content。Reviewability： Provide the basis for and means of security problems。
三、Network Security Analysis
The continuous development of Internet and network applications at a rapid pace，the growing popularity of network applications and more complex，network security iues are the important iues facing the development of Internet and network applications。The increasing complexity of network attacks，merging of various methods，network security defense more difficult。Hacking organization stronger，the target was to obtain many of the practical interests of the direction of transfer from the pure pursuit of “the sense of pride”，the web Trojan、spyware、malicious websites、phishing and increasingly flooding;Proceing power and functionality of mobile phones、Pads and other wirele terminals versatility to improve，make it increasingly close to a personal computer，network attack against these wirele terminals have begun to appear，will further develop。In short，network security iues become more complex，the impact will continue to expand，difficult to be fully resolved in the short term。In short，the security iue has been placed in a very important position，network security if you do not guard against them，will seriously affect the application of the network。
四、Network security threats
The threat faced by the computer network is in many ways，both the threat of network information，including the threat of network equipment，boils down，there are three main： First，the human errors of no intention。Caused by improper system security vulnerability such as the security configuration of the operator，user security awarene is not strong，paword select carelely，own account is free to lend to others or share with someone else and so pose a threat
to give the network security。Second，man-made malicious attacks。This computer network is currently facing the biggest threat，such as the adversary attacks and computer crime this is the case。Third，the vulnerability of the network software and the “back door”。Any piece of software are more or le loopholes，these shortcomings and gaps precisely for hackers to attack target of choice。The vast majority of network intrusion events are imperfect because the security measures，did not catch up on system vulnerabilities caused。In addition，set by the software company’s programmers and easy to maintain software “back door” is a huge threat that can not be ignored，once the “back door” wide open，Others will be able to arbitrarily into the system，lead to disastrous consequences。
五、Computer network security countermeasures
（一）Clear network security objectives。
To solve the network security，We must first clear goals：
(1)The identity of authenticity：To identify the authenticity of the communication entity identity。
(2)Confidentiality of information：To ensure that confidential information is not disclosed to unauthorized person or entity。
(3)Integrity of information：To ensure data consistency，prevent unauthorized users or entities for any damage to the data。
(4)Service Availability：Prevent legal support on the use of information and resources were improperly rejected。
(5)Non-repudiation：Effective responsibility wit，Prevent the entity to deny their behavior。
(6)System controllability：Able to control the use of resources a person or entity to use。
(7)System ease of use：Conditions to meet safety requirements，System should be easy to operate、easy to maintain。
(8)Reviewability：Provide the basis and means of investigation on the problems of network security iues。
（二）Corresponding network security technology to enhance security。
(1)Virtual network technology，prevention of invasion of means based on network monitoring。
(2)The use of firewall technology to protect networks from hacker attacks。
(3)Virus Protection Antivirus、virus scanning and anti-virus。
(4)Use of intrusion detection technology to provide real-time intrusion detection and to take appropriate means of protection。
(5)Security scanning technology provides a powerful support for the discovery of network security vulnerabilities。
(6)The use of authentication and digital signature technology。Authentication technology to solve the network communication proce the identity of the communicating parties approved，the digital signature technology for non-repudiation requirements of the communication proce。
(7)Use of VPN technology。We will use the public network，private network
known as the Virtual Private Network(VPN)。
(8)Application system security technology to ensure the security of e-mail and operating system and application platform。
（三）The development of network security policies and regulations，Universal acce to computer network security education。
Countries with the highest degree of global information，the United States attaches great importance to the Information Systems Security，one of the ensure that the information system security as a national security strategy of the most important part of，adopted a series of policy measures aimed at strengthening the network infrastructure confidential security。Therefore，to ensure that network security is neceary to enact Internet safety enforcement，and increase investment to strengthen the management，ensure the safety of information systems。In addition，should also focus on universal acce to computer network security education，enhance people's awarene of network security。
