Characteristics of network security

Main Features

Network security should have the following five characteristics:

Confidentiality: Information is not disclosed to unauthorized users, entities or processes, or to the characteristics of their use.

Integrity: an attribute in which data cannot be changed without authorization. The feature that information remains unmodified, not corrupted, and lost during storage or transmission.

Availability: An attribute that can be accessed by an authorized entity and used on demand. That is, the ability to access the required information when needed. For example, denial of service, disruption of network and the normal operation of related systems in network environment are the attacks of usability;

Controllability: Ability to control the dissemination and content of information.

Verifiable: Provide evidence and means for security issues that arise

From the network operation and management point of view, they want to the local network information access, read and write operations are protected and controlled, avoid the "trap", virus, illegal access, denial of service and network resources and illegal occupation and illegal control threats, to stop and defend network hackers attack. For the security and confidentiality departments, they want to filter and prevent illegal, harmful or related state secrets information, avoid confidential information leakage, avoid harm to society and cause great loss to the country. From the point of view of social education and ideology, the unhealthy content on the network will hinder the social stability and human development, and it must be controlled.

With the rapid development of computer technology, the business processed on computers is also developed by the mathematical operation of single machine, the processing of documents, the internal business processing of the internal network based on simple connection, the office automation, etc., based on the complex intranet (intranet), Enterprise external Network (Extranet), Global Internet ( Internet), enterprise-level computer processing systems and worldwide information sharing and business processing. At the same time, the system's ability to connect is increasing. But in the connection ability information, the circulation ability enhancement at the same time, the network connection security problem is also increasingly prominent, the overall network security mainly manifests in the following several aspects: The network physical security, the network topology structure security, the network system security, the application system security and the network management security and so on.

Therefore, the problem of computer security, should be like every household fire anti-theft problem, as a precaution in the first place. Even if you don't think you're going to be a target, the threat is already there, and when it happens, it's often taken by surprise, causing a lot of damage.