Saturday, August 31, 2019

What kind of "over the wall" is illegal?

According to Article 6 of the Interim Provisions on the Administration of International Network Management of Computer Information Network of the People's Republic of China (hereinafter referred to as the “Interim Provisions”), “Computer information networks must be directly connected to the international network, and must use the international gateways provided by the National Public Telecommunications Network of the Ministry of Posts and Telecommunications. Any Units and individuals may not establish or use other channels for international networking." The public security organ may give a warning to those who violate this regulation and impose a fine of up to 15,000 yuan.

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The State Council issued the "Interim Provisions" in 1996 and revised it in 1997. Li Zhian said that this provision has been "prepared for use" in the past 20 years and has a legal effect, but it has not fulfilled its law enforcement actions.

Law enforcement mainly began in 2017, when China tightened the VPN market.

On January 22, 2017, the Ministry of Industry and Information Technology of the People's Republic of China announced the “Notice on Clearing the Regulation of the Internet Network Access Service Market” (hereinafter referred to as the “Notice”), and decided to use it from the same day to March 31, 2018. Inspect the network infrastructure and network access resources such as IP addresses and broadband.

Li Zhian said that since then, the authorities have released a signal to warn companies and individuals to pay attention to the legal consequences of "over the wall."

On July 1, 2017, GreenVPN, a veteran VPN service provider with a large number of users, stopped service. Later, more VPN service providers terminated their operations at the request of the regulatory authorities, including Tianhang VPN and Cloud Wall VPN. In 2017, Apple vacated 674 VPN applications in the China Store app as a result of breaking Chinese law.

Li Zhian explained that it is only legal to conduct overseas server docking services through the three major telecom operators (China Mobile, China Unicom and China Telecom). Other forms of “over the wall” are in the “Interim Regulations”. "Illegal fixed channel."

"You may just download a VPN software to help you connect to foreign countries, in fact, it is illegal."

How was the “over the wall” detected?

In principle, Li Zhian said that China's domestic network is connected to foreign networks through a limited number of key nodes, which are equivalent to the hub of telecommunications.

When the user "over the wall" through the VPN, it must be realized through these key nodes. At this time, the firewall can identify the IP address according to the information flow transmitted by the VPN at a certain node.


VPNs come in a variety of forms and are constantly challenged by firewall technologies based on their protocols, applications, and device types. Li Zhian said that in the past few years, China's firewall technology and VPN technology have broken through firewalls. Some VPNs have encryption capabilities that bypass the firewall and are not detected. Even some high-end VPNs have anti-detection techniques.

Li Zhiwen said that between the investigation and the investigation, it seems that there is no end to the confrontation between the righteous and the evil.

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