1. Firewall

Network firewall technology is a special network interconnection device used to strengthen access control between networks and prevent external network users from illegally entering the internal network through the external network. Access intranet resources and protect the intranet operating environment. It checks the data packets transmitted between two or more networks according to certain security policies, such as link modes, to decide whether communication between the networks is allowed and monitors the network operating status.

At present, firewall products mainly include bastion hosts, packet filtering routers, application layer gateways (proxy servers), circuit layer gateways, shielded host firewalls, dual-homed hosts, etc.

2. Anti-virus 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 Antivirus has very limited functions and cannot fully meet the needs of network security. This method may still be able to meet the needs of individual users or small businesses, but if individuals or businesses have e-commerce needs, it cannot fully meet the needs.

Fortunately, with the continuous development of anti-virus software technology, the current mainstream anti-virus software can prevent the intrusion of hacker programs such as Trojan horses. Other anti-virus 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, Kingsoft Firewall, Norton Firewall, etc.

3. File encryption and digital signature technology

Security technology used in conjunction with firewalls includes file encryption and digital signature technology, which aims to improve the security and confidentiality of information systems and data. sex. 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 are paying more and more attention to network security and information confidentiality.

At present, in addition to strengthening data security protection in terms of law and management, various countries have also taken measures in software and hardware technology. It promotes the continuous development of data encryption technology and physical defense technology. According to different functions, file encryption and digital signature technology are mainly divided into data transmission, data storage, data integrity determination, etc.

Extended information:

The first full VR online network security conference was held

A few days ago, the DEF CON CHINA organizing committee officially announced that after more than 20 months of After a long wait, DEF CON CHINA Party will be held online on March 20th.

According to official information provided by DEF CON CHINA, this DEF CON CHINA Party will be held entirely online using VR. This is also the first "full VR" conference in the history of DEF CON. To this end, the organizers built a virtual space and cyber world called The DEF CONstruct. In computer languages, Construct is usually translated as structure.