The development history of network security technology

With the vigorous development of Internet technology, network security has become one of the important factors in the development of global informatization today. With the continuous occurrence of cyber attacks and cyber crimes, protecting network security has become an inevitable choice for us. This article will focus on the development history of network security technology.

1. Cryptozoology Era (1960s-1980s)

Network security technology in the cryptography era was mainly developed based on cryptographic ideas. During this period, the computer was just a huge machine and the use of the Internet was not as widespread as it is now, so limited cryptography was seen as one of the effective means. During this period, many technologies using cryptography appeared, such as DES algorithm and RSA algorithm. These algorithms simply encrypt data and store it on the network. Since there is no security protection system, the network is only maintained manually, which leads to complex network security issues.

2. Firewall Era (1990s)

With the development and growth of the network, people began to pay attention to network security issues, and many innovative ideas emerged. Around 1993, firewall technology was introduced into network security. The idea of ​​​​a firewall is similar to filtering, which can limit the flow of traffic, thereby making the network safe.

During this period, firewalls became the mainstream of network security technology. The principle of the firewall is to implement a rule API to defend the network so that external access is restricted within a certain range. This idea was very avant-garde at the time and became an important safeguard for network security.

3. The rise of intrusion detection technology (early 21st century)

With the development of the network, network attack technology continues to upgrade, and the restriction capabilities of firewalls are no longer enough. Therefore, intrusion detection systems also began to emerge.

Intrusion detection technology is a new network security technology that can detect malicious behaviors in the network based on certain rules. Intrusion detection technology analyzes the traffic in the network and predicts abnormal behaviors in the network to improve the reliability and security of the system.

4. The era of cloud security technology (mid-21st century)

The vigorous development of cloud computing technology has also led to the comprehensive promotion of cloud security technology. Cloud security technology refers to network security technology based on cloud computing, which can help users improve the reliability and security of network security issues. Cloud security technology uses virtualization technology to integrate network resources into a single platform to achieve various security management in the network.

In short, with the rise of network security, network security technology is constantly developing. In the future, network security technology will surely become more mature and complete, which is of vital significance to the improvement of modern comprehensive offensive and defensive capabilities.

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