The meaning and characteristics of network security

Meaning: Network security means that the hardware and software of the network system and the data in the system are protected, which will not be destroyed, changed or leaked due to accidents or malicious reasons, and the system will run continuously, reliably and normally without interrupting the network service.

Features: confidentiality, integrity, availability, controllability and non-repudiation.

Confidentiality means that information in the network is not obtained and used by unauthorized entities (including users and processes). This information includes not only state secrets, but also business secrets and work secrets of enterprises and social groups, as well as personal information.

When people apply the network, they naturally require the network to provide security services, and the information that is kept secret includes both the information transmitted in the network and the information stored in the computer system.

Take the initiative to defend and go to the market;

The concept of active defense has been developed for some years, but there are still many obstacles from theory to application. Active defense is mainly to analyze and scan the behavior of specified programs or threads, and judge whether they belong to dangerous programs or viruses according to preset rules, so as to carry out defense or cleaning operations.

However, from the concept of active defense to product development, the most important factor is intelligence. Because computers are produced under a series of rules, how to find, judge, detect threats and take the initiative to defend them has become the biggest obstacle for the concept of active defense to enter the market.

Because active defense can improve the efficiency of security policy implementation and play a positive role in promoting the network security construction of enterprises, although its products are not perfect, with the progress of technology in the next few years, active defense products with automatic program monitoring, automatic program analysis and automatic program diagnosis as their main functions will be combined with traditional network security equipment.

Especially with the development of technology, active defense products against malicious attacks such as viruses, worms and trojans will gradually mature and put on the market, and the listing of active defense technology will become an inevitable trend.