As a general technology of computer network, VPN is often used in firewall, router and other application scenarios, which has the characteristics of secure encryption and improved transmission speed. When foreign trade enterprises and multinational companies need to use special lines to carry out cross-border networking due to their own office needs, they can rent them from telecom operators approved by the competent telecommunications authorities and qualified to operate international communication services. However, enterprises and individuals that have not been approved by the competent telecommunications authorities and are not qualified to operate international telecommunications services, and illegally rent international private lines or VPN to carry out cross-border telecommunications business activities, may violate the Network Security Law of the People's Republic of China, the Criminal Law of People's Republic of China (PRC) and other relevant laws and regulations, and be subject to administrative punishment or even criminal punishment. In the next step, Nanming Netan will continue to crack down on illegal and criminal activities related to VPN abuse in strict accordance with relevant laws and regulations.