网络安全基础知识浅析（Analysis of basic knowledge of network security）.docVIP

网络安全基础知识浅析（Analysis of basic knowledge of network security） Network security issues have become increasingly prominent with the rapid development of computer technology, the network operation and management perspective, they want access to information on the local network, read and write operations are protected and controlled, to avoid the trap door, viruses, illegal access, denial of service and cyber source of illegal occupation and illegal control such threats, stop and defense network hackers. Of the security sector, they want to filter and block of information harmful or illegal, involving state secrets, to avoid disclosure of confidential information to avoid harm to the society, causing huge losses to the state. In terms of social education and ideology, unhealthy content on the Internet will hinder social stability and human development, and must be controlled. Specifically, on information security or information security has two main elements: first, system configuration and network and maintain the correct configuration, because it is difficult to be perfect; the second element is clear and out of the network traffic. In this case, when a serious problem occurs, you can detect that the problem is wrong. Therefore, the main tasks of network security include the following three aspects: Protection, we should configure our system and network as accurately as possible Test, we need to make sure that the configuration has been changed, or that some network traffic is having problems After the problem is confirmed, we should solve the problem immediately and return the system and network back to safety as soon as possible Defense in depth Because we dont achieve absolute security, we need to accept a certain level of risk. The definition of risk is the possibility of system vulnerability threat, the risk is difficult to calculate, but we can through the analysis of known attacks, the attacker may be available or use loopholes and other factors to determine the