What are the main network security technologies?

Network firewall technology is a special network interconnection equipment, which is used to strengthen access control between networks, prevent external users from illegally entering the intranet through the extranet, access intranet resources and protect the intranet operating environment. According to a certain security policy, it checks the data packets transmitted between two or more networks, such as link mode, to decide whether to allow communication between networks and monitor the network operation status.

At present, firewall products mainly include fortress host, packet filtering router, application layer gateway (proxy server), circuit layer gateway, shielded host firewall, dual-homed host and so on.

2, antivirus software technology

Anti-virus software is definitely the most widely used security technology solution, because this technology is the easiest to implement, but we all know that the main function of anti-virus software is anti-virus, and its function is very limited, which can not fully meet the needs of network security. This method may still meet the needs of individual users or small enterprises, but if individuals or enterprises have the needs of e-commerce, they cannot fully meet them.

Fortunately, with the continuous development of anti-virus software technology, the current mainstream anti-virus software has been able to prevent the invasion of hackers such as Trojan horses. Other antivirus software developers also provide software firewalls, which have certain firewall functions and can play the role of hardware firewalls to a certain extent, such as KV300, Jinshan Firewall and Norton Firewall.

3. File encryption and digital signature technology

The security technology combined with firewall includes file encryption and digital signature technology, aiming at improving the security and confidentiality of information systems and data. One of the main technical means to prevent secret data from being stolen, intercepted or destroyed by the outside world. With the development of information technology, people pay more and more attention to network security and information confidentiality.

At present, countries not only strengthen data security protection in law and management, but also take measures in software and hardware technology respectively. It promotes the continuous development of data encryption technology and physical prevention technology. According to different functions, file encryption and digital signature technologies are mainly divided into data transmission, data storage and data integrity discrimination.

Extended data:

The first all VR online network security conference was held.

Recently, the organizing committee of DEF CON CHINA officially announced that after waiting for more than 20 months, DEF CON CHINA Party will be held online on March 20th.

According to the official information provided by DEF CON CHINA, this DEF CON CHINA Party will be conducted online using VR, which is also the first "all VR" conference in DEF CON history. To this end, the organizer established a virtual space and network world called DEF CONstruct. In computer language, Construct is usually translated into structure.