Network security is an important part of national security, which refers to the ability to keep the network in a stable and reliable operation state and ensure the integrity, confidentiality and availability of network data by taking necessary measures to prevent attacks, intrusions, interference, destruction and illegal use of the network and accidents.

In recent years, China has continuously accelerated the top-level design in the field of network security, continuously improved the network security and policy system, and formulated and promulgated a series of laws and regulations, such as the Network Security Law, the Data Security Law, and the Personal Information Protection Law, which have provided practical guarantees for safeguarding national network security and the vital interests of the people.

This year's Cyber Security Publicity Week will also focus on issues that people are highly concerned about, such as key information infrastructure protection, personal information protection, data security governance, telecommunication network fraud, and youth network protection, highlighting the purpose of serving the people and making the people feel more secure, happy and secure in cyberspace.

The data shows that as of June 2023, the number of netizens in China reached 654.38+79 million. At present, the Internet affects people's daily life more widely and deeply, and network security is more closely related to everyone.

Since 20 14, the National Cyber Security Publicity Week has carried out many important activities such as cyber security entering communities, rural areas, enterprises and institutions, campuses, families and military camps, which has made the concept of cyber security more deeply rooted in people's hearts.

special technology

Network security is related to the further development of future network applications, involving security strategy, mobile code, instruction protection, cryptography, operating system, software engineering and network security management. Firewall technology is mainly used to isolate ordinary private intranet and public internet.

"Firewall" is a figurative term. In fact, it is a combination of computer hardware and software, which establishes a security gateway between the Internet and the intranet, thus protecting the intranet from illegal users.

Firewall can be a simple hidden router. If it is an ordinary router, it can only play the role of isolation.

Covert routers can also prevent communication between networks or hosts at the level of Internet protocol ports, and play a certain filtering role. Because covert routers only modify the parameters of routers, some people do not classify them as "firewall" measures.