Solution

I. Overview of the system

Network security: The network system is protected from any threats and infringes, and the data exchange and resource sharing can be realized normally. Computer network is to share resources as the purpose, the use of communication means to relatively dispersed in the region, independent computer systems, terminal equipment, data equipment to connect, under the control of protocol data exchange.

In the Global Risk report, cyber security has become the biggest risk after natural disasters. In the era of big data, everyone is running naked, and the user's front foot has just registered information, and the back foot has been packaged by hackers into clearly priced "goods" and repeatedly sold. The viral spread of this abnormal personal privacy has directly led to a sudden drop in people's sense of security on the Internet. According to the latest data released by the Internet Security Center, during the "Double 11" period last year, 110 million website attacks were blocked for users across the country.

April 29 is "Network Security Day". With the rapid development of computer technology, information security has become an important guarantee for social development. Many personal, family, institutional, corporate sensitive information, and even state secrets. It will inevitably attract a variety of man-made attacks from all over the world, such as information leakage, theft, tampering, deletion, addition, computer viruses, etc. Network security products can detect, analyze, and diagnose all transmitted data to help users eliminate network accidents, avoid security risks, improve network performance, and increase network availability and security.

2. System block diagram

The design of network topology directly affects the security of network system. If the external network and the internal network communicate, the internal network machine security will be compromised, affecting other systems in the same network. Through network transmission, it will also affect other networks connected to the external network and the internal network. It even involves sensitive areas such as law and finance. Therefore, it is necessary to isolate the public server (WEB, DNS, EMAIL, etc.) from the external network and other internal business networks to avoid the leakage of network structure information. External network service requests are also filtered to allow only normal communication packets to reach the host, and other malicious devices request services before reaching the host will be rejected.

3. Application scenarios

We provide all kinds of: Online behavior management, network security audit, traffic analysis, content monitoring, intrusion prevention system, intrusion detection system, advanced threat detection, virtual network, unified threat management, firewall, gateway, network gate and other embedded machine solutions, Widely used in transportation, finance, electricity, education, healthcare, government agencies, enterprises, operators, cloud computing, big data, artificial intelligence, public safety, smart city and other fields.