What is circumventing the firewall/scientific Internet access?

Climbing the firewall or surfing the Internet scientifically refers to bypassing the firewall through some technical means to access blocked Internet services. In China, many foreign websites and online services are restricted or prohibited from access, so many people need to climb the firewall. Climbing the firewall provides many conveniences, such as being able to communicate with friends around the world through social platforms such as Facebook, Twitter, Instagram, etc., watch videos on streaming platforms such as Netflix, HBO, Hulu, YouTube, and read news from all over the world.

The necessity of climbing over the firewall varies from person to person. Some people climb over the firewall for better learning or scientific research, because the websites and open course materials of some developed countries are very valuable. In the foreign trade industry, people also need to use social platforms such as Facebook, Twitter, Instagram, etc. for marketing and maintaining customer relationships. In addition, there are many overseas e-commerce platforms and promotional activities that also require climbing over the firewall to participate in access.

Although some people think that there are many excellent local applications and services in China, for people who travel, study, work or live abroad, scientific Internet access has become an indispensable part of their daily lives. For this reason, many wall-climbing technologies and tools have emerged for users to use, such as various VPNs and wall-climbing software. It should be noted that wall-climbing also has certain security risks, so you need to be cautious and comply with local laws and regulations when using it.

How to surf the Internet scientifically? Introduction to mainstream methods of circumventing the firewall

Scientific Internet access is the key to free access to the Internet, but Internet censorship in some countries and regions limits people's access. Fortunately, there are some ways to bypass these restrictions. Here are some common scientific Internet access methods:

1. VPN

VPN is an encrypted communication technology that ensures the security and anonymity of online data transmission. VPN can change and virtually protect the user's personal information such as IP address, thereby circumventing firewalls and accessing blocked websites. Although VPN is not designed to bypass firewalls, it is one of the most commonly used scientific methods of surfing the Internet.

When choosing a VPN, we recommend choosing a reliable VPN service and paying attention to safety and risks. It is worth noting that during special periods, due to various reasons, the stability of each VPN service cannot be fully guaranteed, but they all provide a refund guarantee to solve the problem or refund in time. Therefore, we can choose the most reliable VPN service based on various indicators such as price, network speed and usage experience.

In addition to VPN, there are other scientific Internet access methods, such as SSR, SS, V2Ray, Trojan, etc. They also have different characteristics and applicable scenarios. Therefore, we need to choose the most appropriate method according to our needs. However, when surfing the Internet scientifically, we need to pay attention to personal privacy and security and protect our information as much as possible.

VPN is a scientific method of surfing the Internet that many people have heard of or used. VPN stands for "Virtual Private Network". It was invented for data transmission security and network anonymity long before the emergence of GFW. It can change and virtually protect users' IP addresses and personal information, allowing users to access some websites blocked by firewalls.

Recommended best VPN software:

1) ExpressVPN – Very popular among Chinese users

ExpressVPN has been providing VPN services for more than 11 years, covering 94 countries and regions around the world, including Hong Kong, Taiwan, the United States, Singapore, etc. In addition, they have developed their own LightWay protocol, which is more disguised and easier to use than traditional VPN protocols. Users can use the Split Tunneling function to more flexibly choose application or website routing. In addition, ExpressVPN supports multiple platform devices, such as Apple mobile devices, Windows PC, Android TV, etc. Users can install applications and use VPN services easily and conveniently.

2) PrivateVPN – Also a VPN with high user ratings

They highlight security and affordable prices, support mainstream devices such as Windows, Mac, Linux, Apple, Android and routers, and have built-in professional wall-breaking protocols, fast connection speeds, and support 10 devices to be used simultaneously. PrivateVPN provides low-latency, fast IP nodes, including nodes in Hong Kong, Taiwan, South Korea, Singapore, etc., and uses the Stealth VPN wall-breaking function to disguise traffic, which has better stability and speed when circumventing the wall. In addition, they adhere to the zero/no log policy and use advanced AES-256 encryption algorithms to protect user data security. PrivateVPN offers a variety of package duration options and a 30-day money-back guarantee, and users can test its speed and stability in China during the trial period. Finally, PrivateVPN provides 24/7 online customer service and remote help so that users can get support at any time.

2.SSR

In addition to VPN, SSR is also a popular scientific Internet access tool. SSR stands for "Shadowsock", which is a scientific Internet access tool based on Socks5 proxy. Compared with traditional VPN, SSR performs better in speed, stability and privacy, especially in mainland China. When using SSR, you only need to install the client on the device and configure some parameters.

3. V2Ray

V2Ray is a relatively new scientific Internet access tool known for its high speed, security and stability. V2Ray is also a proxy software that supports multiple protocols, such as VMess, Socks, HTTP, etc. Compared with other tools, V2Ray has more flexible traffic control and multiplexing functions, which can meet the needs of more advanced users. However, due to the complex configuration of the V2Ray client, certain network protocols and programming knowledge are required.

4. Trojan

Trojan is a scientific Internet access tool based on SSL/TLS encryption protocol. Compared with SSR and V2Ray, it performs better in terms of network privacy and security. Unlike other tools, Trojan's traffic encryption method is more efficient and can effectively prevent IP from being blocked or monitored. However, the configuration of Trojan client is also relatively complicated.

It should be noted that although the above tools can be used to surf the Internet scientifically, there are risks in using any tool. You need to be cautious when using scientific Internet tools. It is recommended to choose a regular and reliable service provider, abide by local laws and regulations, and do not engage in illegal activities.

How to choose a circumvention software?

VPN is an important technology for scientific Internet access. Users can use VPN to virtually change their IP address to access major websites, streaming media and software around the world and protect their personal privacy. When choosing a VPN, users need to consider the following aspects:

1. Basic functions

A good VPN should have the following basic features:

• 1. There are many nodes for circumventing the firewall, covering the world and in sufficient quantity, which can provide high-speed servers and scientific Internet access nodes so that users will not experience buffering or lag when accessing.

• 2. Low latency and high bandwidth, so that users can access major websites and streaming media around the world without any hindrance. - 3. Good stability, able to quickly fix network fluctuations and improve the experience of circumventing the firewall.

• 4. Strong security features, supporting multiple security protocols and advanced security encryption technology to protect user privacy.

• 5. The privacy policy is clear and concise, clarifying whether private data such as IP, DNS, and logs are collected and how this data is used.

2. Upgrade function

A good VPN should also have the following upgraded features:

• 1. Reasonable price, high cost performance.

• 2. Device compatibility, supports multiple platforms and devices, and allows multiple devices to be connected at the same time.

• 3. Supports major streaming media, gaming and other platforms, including Netflix, Hulu, HBO, etc., and provides functions such as dedicated line acceleration and split tunneling.

• 4. Provide 24/7 customer service to solve any problems users encounter when using VPN. - 5. Provide free trial and free refund policy so that users can experience VPN before using it.

3. Applicable to Chinese users

A good VPN needs to not only perform well abroad, but also have a network environment suitable for Chinese users. Users need to ensure that the VPN can connect and bypass the firewall, and that the VPN website and client support Chinese. This is especially important for users who need to work or live in China.

In summary, users need to consider the above three aspects when choosing a VPN in order to purchase the most secure, practical VPN that meets their needs.

• What is circumventing the firewall/scientific Internet access?

• How to surf the Internet scientifically? Introduction to mainstream methods of circumventing the firewall

  • 1. VPN

    • Recommended best VPN software:

  • 2.SSR

  • 3. V2Ray

  • 4. Trojan

• How to choose a circumvention software?

  • 1. Basic functions

  • 2. Upgrade function

  • 3. Applicable to Chinese users

• Which is better, free or paid circumvention software?

  • Advantages of Paid VPNs

  • Disadvantages of Free VPNs

• Practical and cost-effective VPN software recommended

  • 1. ExpressVPN – The best VPN for circumventing Chinese firewalls

  • 2. PrivateVPN – A cost-effective VPN

• How to use VPN to bypass the firewall

  • 1. Get a PrivateVPN account and subscribe to a plan

  • 2. Download PrivateVPN and log in to your account

  • 3. Connect to a VPN server and surf the Internet securely

• Detailed explanation of the proxy agreement

  • What is a Proxy\& Proxy Server

  • How agents work/process

• Network Proxy\&Proxy Server Classification 

  • The role of network proxy 

  • Web Agent FAQs 

• Shadowsocks Introduction

  • What is Shadowsocks? 

  • How does Shadowsocks work? 

  • The past and present of Shadowsocks 

  • Shadowsocks official download address 

  • Shadowsocks Simple Tutorial [Newbie Friendly] 

  • Shadowsocks FAQ 

• What are the uses of scientific Internet access?

• Precautions for circumventing the firewall/scientific Internet access

• FAQs about Scientific Internet Access

  • How to improve the speed of Internet access?

  • Proxy vs VPN: Which is better?

  • Can I build my own ladder?

  • Is it illegal for personal use of a VPN?

  • Will I be discovered if I use a VPN to bypass the firewall?

  • Will a VPN slow down my device?

  • Can I use domestic antivirus software/browser when connecting to VPN?

  • Can I play games with a VPN? Is it the same as an accelerator?

  • Can I use a free cracked version of VPN?

• After climbing over the wall

  • Daily use website:

  • Social Media Sites:

  • Over the Wall News Network:

  • Movie Website:

  • Online Courses:

  • Travel Websites:

Which is better, free or paid circumvention software?

When using VPN, many people hesitate whether to choose free VPN or paid VPN. From many perspectives, people living in China can only choose paid VPN, while users overseas should choose paid VPN as much as possible.

Advantages of Paid VPNs

For paid VPNs, the obvious advantage is that they can be used to bypass the Great Firewall. Although there are many software that can be used to bypass the Great Firewall, there are very few that can be used in China, and free VPNs are almost impossible to use in China.

In addition, paid VPNs provide stronger security protection, usually using AES-256 bit encryption technology and supporting multiple VPN protocols. In addition, most paid VPNs also adopt a strict zero-logging policy. A large number of advanced features can be built into their APP clients, such as kill switches, IP/DNS leak protection, ad blockers, etc., so that users can get maximum privacy protection.

Paid VPNs are more stable because they have a large number of paying users and have a strong technical team and financial support to cope with GFW updates and upgrades. In addition, paid VPNs deploy a large number of servers in countries and regions around China, which can provide super-fast connections for Chinese users. Paid VPNs have deployed a large number of servers in all major countries around the world, so that most of the geographically restricted websites and content in the world can be unblocked. Paid VPNs provide dedicated APP clients for all devices and platforms, and also provide 24/7 online customer service support.

Paid VPNs are also free of charge, and are not limited in bandwidth and traffic. You don’t have to endure the ad windows when using free VPNs, and you don’t have to be restricted when using streaming media. Therefore, using a paid VPN can not only improve your efficiency in study and work, but also bring you a better entertainment experience.

Disadvantages of Free VPNs

If you want to use a free VPN, the only advantage is that it’s free. Apart from that, there are too many disadvantages. Free VPNs cannot be used to bypass the Great Firewall, so they are useless for netizens in China. Although free VPNs provide encryption protection, the vast majority of free VPNs have poor security. Even some free VPNs provide 256-bit encryption protection by default, but still cannot provide users with sufficient privacy and security protection, and will also collect and resell users’ personal information.

Free VPNs have low stability. According to our test results, using free VPNs can only evade the first upgrade of GFW, and most of them cannot be used in subsequent upgrades. In countries and regions around China, free VPNs have only a few servers available, and the connection speed is much slower than that of paid VPNs. Many streaming platforms have identified and blocked the server IPs of some free VPNs.

In addition, some free VPN operators use pop-up ads to make profits, and force users to upgrade to their paid VIP membership by limiting bandwidth, traffic, number of logged-in devices, etc. At the same time, free VPN services usually only provide very limited device compatibility, and even cannot provide email support.

Therefore, it can be seen that paid VPN services can provide better service guarantees than free VPNs, can better protect users' personal privacy and security, and can provide better wall-climbing effects. Free VPNs usually have cumbersome restrictions and problems in security, stability, and speed. Therefore, to get a better VPN service experience, we recommend that users choose paid VPNs to meet their needs.

Practical and cost-effective VPN software recommended

1. ExpressVPN – The best VPN for circumventing Chinese firewalls

ExpressVPN is a highly acclaimed service provider and is considered by many to be the first choice for Chinese users to bypass the firewall in China, a country that is particularly harsh on VPNs. Here are some reasons to recommend ExpressVPN:

In addition, ExpressVPN pays attention to the privacy and security of users. It uses the highest level of 256-bit encryption protocol to protect users' online data, effectively protecting users' personal information and network security. It also provides many advanced security features, such as kill switch, tunnel splitting, etc., to prevent users' data from being stolen or leaked. At the same time, ExpressVPN is also registered in the Virgin Islands, and does not record users' online information, which also protects users' personal privacy well.

In addition to security and privacy protection, using ExpressVPN can also provide a better network experience. It can unblock streaming services around the world, such as Netflix, Disney+, BBC iPlayer, Hulu, and Amazon Prime, so users can enjoy a smooth experience of global streaming services. In addition, the software also supports simultaneous connection of multiple devices and can be used on many devices, including Apple iOS devices, Android devices, computers, and different smart TVs and routers.

ExpressVPN can connect to the server within seconds without having to wait for a long time to connect. In addition, their technical support team can usually answer users' questions within a few minutes, so that users can get timely help and support during use.

In addition, ExpressVPN is designed with the user experience in mind. Its application is easy to use and basically does not require any configuration. Most users only need to download the application, log in to their account, and start the connection, and they can use it. This greatly reduces the troublesome operations for users.

Finally, if you still have any concerns or confusion when using ExpressVPN, the company also offers a strong 30-day no-questions-asked refund policy. If users are not satisfied with the software during the initial trial period, they can get a full refund, so you can try it out and experience all the features that the software has to offer without any worries.

All in all, if you need a VPN that is fully functional, highly secure, and works smoothly in China, ExpressVPN is undoubtedly an excellent choice. If you encounter any problems, the company also provides 24/7 live chat customer service and email support. With its 30-day unconditional refund policy, users can decide whether to purchase the service before the trial period ends.

How to use ExpressVPN to bypass the firewall

• 1. Go to the ExpressVPN official website, select a suitable package and complete the purchase. It is recommended to choose a 12-month package, which is more cost-effective. After the purchase is successful, you can download the corresponding APP client on the official website and complete the installation according to the prompts.

• 2. Open the ExpressVPN APP client and log in with the account used when purchasing.

• 3. Select a server node that is closer to your location and click Connect to start using the VPN service

• 4. One-click connection to enjoy all foreign websites and platforms!

For users who use ExpressVPN in China, here are some tips for circumventing the firewall:

• 1. Give priority to the Lightway protocol, which has a faster and more efficient connection speed.

• 2. When selecting a server node, please choose and connect to nodes around China, because these nodes have faster connection speeds and higher reliability, which can help users to complete the Internet access more stably by circumventing the firewall.

• 3. Make sure the split tunneling feature is turned on when using ExpressVPN. This feature can help users speed up the network better.

• 4. Check the site announcements regularly and keep the software client version up to date to ensure that users always have a stable and fast connection experience.

2. PureVPN – Affordable VPN

PureVPN is a well-known VPN software in the Chinese market. It was founded in 2006 and is headquartered in the British Virgin Islands, China. It has more than 6,500 servers in more than 78 countries. PureVPN excels in understanding China's network environment and the needs of Chinese users. In addition, PureVPN is cheap, supports simultaneous login on 10 devices, and has a 31-day money-back guarantee.

In terms of security, PureVPN uses military-grade AES-256 bit encryption technology, has a strict zero-logging policy and a fully private DNS server. In addition, its APP client has many built-in features, such as a kill switch, IP/DNS leak protection, and ad blocking, which can effectively protect the privacy of users.

In terms of unblocking capabilities, PureVPN can unblock many streaming services, including Netflix, Amazon Prime Video, BBC iPlayer, HBO, Hulu, etc. The number and distribution of its servers are also very wide, and Chinese users can easily access websites such as Google, YouTube, Facebook, Skype, WhatsApp, Twitter, etc. And PureVPN has no traffic and bandwidth restrictions, allowing Chinese users to watch TV series, download torrents, and play games freely.

PureVPN is highly compatible with all mainstream devices and platforms, including computers (Windows, MacOS, Linux), mobile phones (Android, iOS), tablets, routers, smart TVs, game consoles, and can even be used on Chrome and Firefox browsers. Each paid account allows ten devices to log in at the same time, which is very suitable for users with more devices or users who want to share with friends.

PureVPN is also very affordable: 12-month package is $1.99/month, 3-month package is $6.65/month, and 1-month package is $10.95/month. For those who want to use VPN for a long time, PureVPN is undoubtedly the most affordable choice. The refund period is 31 days, and users are free to test and use its service during this time.

In general, PureVPN is one of the oldest VPNs in the Chinese market, and its experience advantage makes it one of the most trusted brands by users. If you need to access blocked websites or watch foreign videos, PureVPN is a comprehensive, affordable, and recommended VPN choice.

3. Surfshark – Unlimited number of devices, shareable VPN

Surfshark is a VPN that has only been available in recent years. It is operated by a manufacturer headquartered in the British Virgin Islands and has attracted many users since its establishment.

Surfshark is a dark horse in the VPN market because it can pass the GFW blockade, provide excellent data privacy protection, and successfully unblock many geo-restricted websites and streaming platforms at home and abroad. It has a unique NoBorders mode in technology, which can effectively disguise the user's traffic to avoid detection. In addition, in terms of security, Surfshark also provides the same AES-256 bit encryption protocol and strict zero-logging policy similar to ExpressVPN.

Surfshark has deployed more than 3,200 server nodes in 65 countries around the world, allowing users to connect to server nodes around the world and unlock restricted websites and platforms. When connecting to server nodes in Taiwan, Hong Kong, Japan, Singapore, etc., users not only have fast and stable network connection speeds, but also can watch high-definition videos smoothly. At the same time, Surfshark can run on various mainstream devices and platforms, including Windows, Linux, MacOS, iOS, Android and other operating systems and browsers.

Surfshark is very affordable, with a two-year package costing only $2.49 per month, which is 80% off the original price. Users can also enjoy 24/7 online customer service and a 30-day money-back guarantee. It is worth mentioning that Surfshark does not limit the number of devices logged in under the same account. Users can log in to the same account on multiple devices at the same time, so they can share it with friends and save a lot of money.

In short, Surfshark is a highly recommended VPN for overcoming the firewall. It not only provides fast and secure network connection, but also is affordable, can log in to multiple devices at the same time, and more importantly, it can also unblock geographically restricted websites and streaming platforms.

What are the mainstream methods of circumventing the firewall?

The term "climbing the wall" refers to the act of breaking through network blockades or access restrictions to access foreign Internet that cannot be directly accessed in mainland China. The original function of VPN was to provide data encryption for companies. With the continuous upgrade of the Great Firewall, people are more and more eager to surf the Internet scientifically, and VPN has become more and more popular. The following are the mainstream methods of climbing the wall:

1. Foreign paid VPN

There are many discussions on the Internet about how to bypass the Great Firewall, and the most common, relatively simple and safe way to bypass the Great Firewall is to use a paid VPN. Currently, paid VPNs for bypassing the Great Firewall are very mature, and most service providers provide strong privacy protection, easy-to-use APP clients, built-in advanced functions, deploy a large number of server nodes around the world, provide strong customer support and refund guarantees, etc.

In China, VPN is mainly used to bypass the Great Firewall. Most service providers will upgrade the traditional VPN protocol (add obfuscation function) to help users break through the GFW blockade. Some service providers have also developed new VPN protocols specifically for GFW (such as ExpressVPN's Lightway protocol). Using VPN to bypass the Great Firewall is very simple. Even non-technical personnel can easily achieve the goal of bypassing the Great Firewall and going abroad with one click.

However, in recent years, the GFW has increasingly strictly blocked circumvention software, resulting in fewer and fewer VPN service providers that can still be used in China. Currently, there are several top paid VPN service providers that can still be used in China, such as ExpressVPN, Surfshark, and PureVPN. In addition to paid VPNs, paid circumvention software (such as circumvention ladders and airports) and self-built ladders/airports are also common ways to circumvent the firewall.

2. Domestic Airport Ladder

Paid VPNs and ladders/airports are the most common. In comparison, the advantages of paid VPNs are higher security, good compatibility, ease of use, a strong after-sales support team, and no risk of the service provider running away. At the same time, paid VPNs can also provide value-added services such as multiple node selections and compressed traffic, allowing users to choose and set up more conveniently.

Ladders/Airports are circumvention software built by individuals or small teams, usually using VPN protocols such as SSR and V2Ray to achieve circumvention. The advantage of this type of circumvention software is its high speed, but it also has disadvantages, such as poor security, low compatibility, and difficulty in use. In addition, due to its high instability, it often fails to connect or access the Internet, requiring users to try to troubleshoot the problem themselves.

For users with technical capabilities, building their own VPN/Airport VPN may be an option. They can buy a VPS, build their own VPN software, and optimize it to achieve high speed and stability. But for ordinary users, it is recommended to use a paid VPN, which saves time and effort and can provide a more stable network experience.

In short, no matter which circumvention software you choose, users need to choose carefully to ensure its true security and reliability. In addition, when using circumvention software, you also need to pay attention to legality and compliance, and do not violate relevant national laws and regulations to avoid unnecessary trouble.

Is the free circumvention software useful?

Circumvention software has always been one of the mainstream ways to surf the Internet scientifically, and it is very common among Chinese users. Although there are many free circumvention software on the market, we do not recommend using them. In the following aspects, we discuss in detail why you should not use free circumvention software.

First of all, China has the GFW (Great Firewall), which blocks most VPNs. Even if you can find a free VPN, it is likely to fail under the GFW blockade and cannot be used normally. In addition, free service providers usually do not invest enough resources to bypass the restrictions of the GFW, which means that it is difficult for free VPNs to provide stable VPN services for Chinese users. Although you can find several free software that were once widely used in China, such as Lantern, they are now unusable in China and are likely to be blocked by the GFW due to the lack of countermeasures against the GFW.

Secondly, free VPNs often involve the following issues: insecurity, lack of privacy protection and security, full of malware and viruses, and collecting your private information and selling it to third parties to make money. This can be said to be a common problem of all free VPNs. This problem is easy to occur in special periods that require a lot of maintenance, enhancements, and upgrades. Free VPNs may lack strong and long-term financial and technical support, or they may only seek short-term profits and traffic. This means that in addition to some potential security risks, these services may also collect users' personal data, which is obviously not reassuring.

Finally, it is worth mentioning the speed issue of free VPN tools. Most free VPN software will set different degrees of usage restrictions, including traffic restrictions, speed restrictions, concurrent connection restrictions, etc. These restrictions seriously affect the user experience, such as affecting the speed of web page loading, affecting the viewing quality of streaming services, etc. Compared with paid VPNs, free VPNs will limit your scientific Internet access and entertainment experience. However, if it is not profitable, why should free VPNs provide high-speed connections?

In short, free VPN software is common in the market, but you should pay attention to the security, speed and reliability issues when using it. We recommend that you only use trusted paid scientific Internet access tools that have been tested, have multiple server nodes, provide good encryption functions, and have a reliable support team. If you have a low budget or only need to use it for a short period of time, you can also use the refund policy of the paid VPN tool for a free trial. But please do not use those scam free VPN software, because they may cause damage to your computer, mobile device, and private information.

How to choose a paid VPN or a VPN?

In recent years, GFW has been increasingly blocking circumvention tools, resulting in fewer and fewer scientific Internet access tools available. Although most of the world's scientific Internet access tools are blocked in the continuous GFW upgrades, some powerful service providers can provide solutions in the shortest time, allowing users to obtain continuous and stable circumvention services. Therefore, we need to choose a scientific Internet access tool that suits us based on actual needs and the characteristics of VPN and circumvention software.

VPNs are the best choice for ordinary users and technical novices because they are highly compatible, easy to use, safe, and stable. Moreover, top VPNs are equipped with dedicated apps for all mainstream devices, providing a simple and easy-to-use user interface, and can even be used on unconventional devices such as routers and game consoles. Top VPNs use bank-level AES-256-bit encryption technology and a strict zero-logging policy, which can always keep you anonymous on the Internet. Compared with airport or ladder-type VPN software, although some VPNs may be slightly more expensive, VPNs have stronger privacy and security protection functions, provide 24/7 online customer service support and a long refund period, which can make new users feel more at ease to try this service.

However, compared with the airport or ladder type of over-the-wall software, some VPNs may not have as fast connection speeds, and some of the VPN's features may not be as compatible as the airport or ladder type of over-the-wall software. In addition, some VPNs are slightly more expensive because they are not just for over-the-wall, but also provide users with powerful privacy and security protection functions and independently developed VPN protocols.

The main representatives of the VPN are SSR and V2Ray protocols. Although the security and compatibility are slightly inferior to the top VPNs, the connection speed is fast and the cost is cheaper than the top VPNs. However, the customer support and refund policy of the VPN software are not as good as the top VPNs. Therefore, it is not recommended to use the software to build a VPN server yourself, because it is very time-consuming and costly. It is recommended to choose a reliable VPN service provider.

In short, if you need to surf the Internet scientifically for work and study, it is best to choose a paid VPN, because it is simpler and easier to use, and suitable for technical novices. If you just want to use Google or watch YouTube videos and do some easy things, you can choose to use a safe and reliable paid VPN software, because it is lighter and faster.

Recommended criteria for selecting firewall-breaking tools

Nowadays, there are more and more tools for circumventing the firewall, and there are also many VPNs to choose from on the market. But for many ordinary users, choosing the best circumventing software may become a bit tricky.

Therefore, when choosing a scientific Internet access tool, you need to consider factors such as the VPN software's security, speed, simplicity, compatibility, 24/7 online customer service, price, and a long refund guarantee period. Before deciding to buy a VPN, it is recommended to conduct a comprehensive evaluation and test from the following aspects:

1. You can bypass the firewall in China

For Chinese users, the need to "climb over the firewall" is the most urgent. If a circumvention tool cannot break through the GFW blockade, then no matter how useful the tool is, it is meaningless. Currently, there are fewer and fewer circumvention tools that can be used in China, and most VPNs have lost in the competition with the GFW blockade and have withdrawn from the Chinese market.

Therefore, it is very important to choose a VPN that can run stably in China. We recommend choosing overseas VPN brands. These top VPNs have strong technical teams and sufficient financial resources to develop special VPN protocols to bypass GFW detection and restrictions and achieve the purpose of scientific Internet access.

2. Long operation time

In recent years, many VPN software have been banned by relevant Internet departments due to issues related to Chinese laws and regulations. Therefore, it is very important to choose a VPN software that has been in operation for a long time, has a certain degree of popularity and a large user base.

Although operating time is not the only criterion for measuring whether a tool is easy to use, it can reflect the strength of a tool and its performance in the face of GFW restrictions. Powerful tools that can remain stable during GFW upgrades can be called truly easy-to-use VPNs. On the contrary, although newer VPN software can successfully break through GFW restrictions now, it cannot be guaranteed to be usable every time the Great Firewall is upgraded in the future.

At the same time, it is more reliable to choose some VPNs with a large number of paying users. This means that these VPNs can continuously generate income and provide stable guarantees for the operation of the company without suddenly running away or stopping services.

3. High security

If you need to access personal sensitive information, such as online banking and other financial institutions, then using a VPN without strong privacy and security protection will result in the VPN operator or hacker obtaining your account and password. Therefore, be sure to choose a secure and scientific Internet access software.

3. Fast speed

If you are watching a video on YouTube or playing a game and the VPN software frequently disconnects or buffers for too long, you will not be able to have a smooth experience. Waiting for tedious connections and buffering time will turn your favorite entertainment into a nightmare. Therefore, when choosing a VPN tool, you need to pay attention to its connection speed.

3. Easy to use

This is especially important for users who are new to technology. The cumbersome download and installation process often discourages people. Choose a simple and easy-to-use VPN software, and you only need a few minutes to complete the purchase, download, installation and use of VPN. In China, Apple Store has removed all VPN software. If mobile phone users need to download iOS VPN clients, they will face difficulties, so they need a simple and easy-to-use scientific VPN.

4. Compatible with multiple platforms

Compatible with multiple operating systems and devices such as Windows, MacOS, Android, iOS, Linux, and multiple browsers, routers, etc. It is also best to choose a VPN that provides a one-click connection APP client. Through compatibility testing, you can directly understand the strength and comprehensive capabilities of the VPN tool.

5. 24/7 online customer service

There are inevitable problems with using VPNs, which need to be solved in a timely manner. Top VPNs usually have dedicated 24/7 online customer service, so you can get a quick solution if a problem occurs. On the contrary, many domestic airport and ladder products often only provide work orders or emails, which results in very slow speeds.

6. High cost performance

Price is not the most important evaluation factor. Safety and ease of use are the most important. You cannot blindly pursue cheap prices. However, many scientific Internet access tools are relatively cheap, only a few dollars a month, and have high-quality speed and stability guarantees, providing convenience and efficiency for work and study.

7. Have a money-back guarantee

Since circumvention software is blocked by the Great Firewall, it is common for circumvention tools to fail to connect, so it is best to fully evaluate and test the circumvention tool before using it for the first time. If the circumvention tool does not work properly in China, having a long refund guarantee period can protect your funds.

Tips for using VPN software

1. Choose a suitable VPN server node

VPN service providers deploy servers in many countries around the world. The closer they are to the user, the better the connection speed and latency. Therefore, for Chinese netizens, they can give priority to servers located in Hong Kong, Taiwan, Japan, South Korea, and Singapore, which are relatively close and can effectively unblock streaming media, download torrents, watch videos, or play games.

As the world's Internet center, the United States also has many server nodes. Although it is far away, it is also a very good choice in use. Some top VPN service providers also provide convenient functions such as one-click or smart connection, which can automatically select the best server node for users according to their geographical location and access needs.

2. Regularly update VPN software

VPN software also needs to be constantly updated to adapt to the upgrade of GFW. Therefore, it is necessary to regularly check whether the software can be upgraded to ensure a stable experience of circumventing the firewall in China. Whether traveling, studying or working, ensuring that the VPN software used is in the latest version can also provide stable services.

3. VPN protocol and function selection

When choosing a VPN protocol, you should also pay attention to the situation where you cannot bypass the firewall normally when using overseas VPN protocols. VPN service providers usually develop special VPN protocols or functions, such as ExpressVPN's Lightway protocol, Surfshark's Camouflage/NoBorders mode, etc. You should choose the appropriate protocol or function according to user needs.

4. Enable split tunneling

Split tunneling is also a very useful feature that allows you to customize which data traffic goes through the VPN overseas server and which does not. For example, when accessing Google in China, you need to use VPN to go through the overseas server, but when accessing Baidu in China, you do not need to use VPN in the data traffic to avoid unnecessary routing. Therefore, before using the VPN software, please make sure that the split tunneling function is turned on, so that you can not only successfully bypass the firewall, but also quickly access various domestic websites and apps.

What should I pay attention to when climbing over the wall?

More and more people need to use circumvention software to access blocked foreign websites and applications in their daily work, study and life to facilitate access to information and services. However, there are also some risks and precautions when using circumvention software. Users need to pay attention to the following points:

1. Stay away from Chinese anti-censorship software

Although there are many cheap domestic VPN software on the market, they are not only unstable in connection, but also have weak privacy and security protection functions, which can easily leak users' real IP and Internet data. At the same time, it is illegal to build and sell VPN software privately in China, and there are risks of account suspension and investigation when using these software. Therefore, it is recommended to give priority to well-known foreign VPN suppliers, which are more stable and secure.

2. Do not build and sell anti-censorship software privately

Building a VPN software requires a high level of technical skills and costs, and you need to solve the connection problem yourself, which is illegal in China. Therefore, for most ordinary users, in order to use VPN services safely and stably, it is more reasonable and economical to purchase external VPN services.

3. Do not access and disseminate sensitive information

Although you can access overseas websites and social media by circumventing the firewall, you need to be civilized when using it and not spread political, religious and other related content, let alone spread this information to domestic social platforms. This not only poses a security risk, but also may lead to the tracing of the mastermind.

4. Don’t waste your time looking for a free VPN

Although there are many so-called "free" VPNs on the market, most of them have various restrictions such as traffic, speed and connection quality, and they also need to endure advertising harassment and potential dangers, which are completely unable to meet the real needs of users. Therefore, it is recommended to choose a certified VPN service provider that can provide real protection and a higher good reputation.

5. Don’t use cracked versions of anti-censorship software

Although cracked VPNs are free to use, they often contain security risks such as piracy and Trojans, and often fail to provide stable connection services. Therefore, it is recommended to only use officially authorized paid VPN services, giving priority to security and stability.

6. Avoid paying for VPNs through app stores

Although the app store can provide some convenience, you need to be careful when purchasing VPN services. The VPN services in the app store are usually sold at the original price, without some high discounts, and no unconditional refund guarantee. Therefore, it is recommended to use the official website or other reliable third-party service platforms to purchase, which are more discounted and safer, and more cost-effective.

7. Avoid using domestic antivirus software and browsers

Domestic antivirus software and browsers mostly have many problems, such as collecting user data, hijacking rogue software, etc. It is recommended to use international brand browsers, such as Chrome or Firefox, to ensure basic scientific and anonymous Internet security.

What should I do if the VPN software cannot connect?

The inability to connect to the VPN software may be one of the common problems you encounter when using a VPN. Whether it is due to platform problems or other reasons, we can take some solutions. Here are some tips that may be useful:

• 1. You can try restarting the VPN application

Closing the app and then reopening it again may seem simple, but it’s actually quite effective. If this doesn’t fix the problem, you can also try restarting your device. Turning it off, waiting a few minutes, then restarting and opening the VPN app again may help.

• 2. Changing server nodes multiple times usually helps

It is recommended to give priority to nodes around China, because these nodes have faster speeds and lower latency. But if these nodes cannot be connected or the speed is too slow, you can consider trying nodes in the United States, Canada, Europe, etc., which may be more effective.

• 3. You can also try to change the firewall protocol

Although advanced VPNs use protocols developed specifically for GFW (such as ExpressVPN's Lightway protocol), sometimes changing to other protocol types (such as OpenVPN, L2TP/IPSec, etc.) can also solve the problem.

• 4. Update your VPN app regularly

In order to cope with the upgrade of GFW or improve some bad experiences, please check whether the APP client of the VPN software is the latest version and update or reinstall the VPN client in time.

• 5. Turn off anti-virus software or anti-virus guard

It can reduce the time of network traffic detection, thus speeding up the connection. In this way, if your circumvention tool cannot connect, or the connection speed is too slow, you can also try to turn off applications such as the Great Firewall and antivirus software.

If you still can't solve the problem and don't want to wait, you can seek help from the online customer service of the corresponding VPN service provider. These online customer service are usually online 24/7, and you can get the most effective solution for any problem through them.

Finally, if your VPN still can't connect, then changing to a better VPN may be a better choice. Although there are many VPNs available on the market, choosing a high-quality, secure, and reliable VPN tool is key. You can refer to some of the industry's top and tested VPNs that we recommend.

How to install and download anti-censorship software?

For Windows, MacOS, Linux and Android devices, it is very simple to download and install the VPN APP client, which can be downloaded from the official website or app store. For iOS devices, a special method is required. It is recommended to contact the VPN's online customer service first, and they will provide you with more detailed steps and operation instructions.

Many VPN novices will encounter a problem, that is, they don’t know how to download and install the APP client of the VPN software. This article will introduce how to download the APP client of the VPN software for different devices such as Windows, MacOS, Linux, Android, iOS, etc., and provide some download links and operation steps.

PC

For desktop computers or laptops with Windows, MacOS, and Linux systems, downloading and installing anti-censorship software is very simple. You just need to open the official website of the corresponding brand, find the download link, and then download the corresponding APP client. In addition, you can also log in to your VPN account, enter the personal center interface, and download and install the anti-censorship software from there.

Android phone version

It is also very easy to download and install VPN software on Android devices. You can search the name of the VPN brand in the Google Play Store, then find and download their APP clients. Alternatively, you can visit the official website of the VPN software, download the corresponding Android APK file, and then manually install it on your Android device.

iPhone and iPad

For some reason, the Chinese version of the Apple Store has removed all VPN-related software, so if you want to use a VPN on your iPhone or iPad, you need to take some special measures.

• 1. Contact the online customer service of the VPN and ask them for a US Apple ID. After obtaining the US account, you need to open the App Store, log out of the original account, log in to the US Apple ID, search for the VPN app and download it. After the download is complete, switch the Apple ID back to the original account.

• 2. Buy a US Apple ID through some third-party platforms in China. This method is also very common. You only need to search "Buy US Apple ID" on Taobao or other online e-commerce platforms. The price is usually around 10 to 20 yuan. However, since Taobao has now banned the sale of Apple IDs, searching directly for "US Apple ID" may not yield much information. In addition, you can also search for other websites that sell US Apple IDs on Google.

• 3. Register a US Apple ID yourself. If you are a tech expert or willing to try this method, this may be the best option. Registering a US Apple ID requires a US zip code, which can be obtained from an online search, or using the address of your friends or family. In addition, you will also need a US credit card or iTunes gift card to verify your account, or use a new email address and password that has not been registered with an Apple ID.

Frequently asked questions about circumventing the firewall and surfing the Internet scientifically

How about building your own VPN/Airport VPN?

A VPN or Airport VPN is also a type of VPN software that can help users bypass network blockades and access blocked websites and applications. However, building your own VPN software requires a certain level of technical skills and time and effort, and is not suitable for technical novices or ordinary users. In addition, building and selling VPN software is prohibited in China, involving legal and regulatory issues. It is recommended to use paid VPN software and only use it for legal purposes.

The software for circumventing the firewall consists of a user client, a circumventing firewall protocol, and a foreign server. In China, the commonly used clients include Shadowrocket, whose logo resembles a rocket taking off, so it is called "Little Rocket". The software for circumventing the firewall usually uses a foreign VPS to build a VPN server. The popular circumventing firewall protocols on the market include Shadowsocks (SS for short), ShadowsocksR (SSR for short), V2Ray, Trojan, etc.

Shadowsocks is one of the earliest circumvention protocols, a proxy protocol based on SOCKS5 encrypted transmission. Its client looks like a paper airplane, so it is called "airport", forming a popular "SS airport" culture. However, the SS circumvention protocol is difficult to resist the GFW blockade. ShadowsocksR adds obfuscation technology to Shadowsocks, successfully bypassing the blockade and becoming one of the most widely used circumvention protocols.

V2Ray is a later firewall-breaking protocol than SSR, so its firewall-breaking effect is better. However, there are relatively few tutorials on how to use the V2Ray protocol to build firewall-breaking software on the market. Trojan is an advanced firewall-breaking protocol that has emerged in recent years and disguises user data traffic, so it is difficult to be blocked. However, as a new protocol, the related software and documents are not mature enough.

The principle of circumvention software is to establish a specially encrypted tunnel between the user's device and the overseas server, and all the user's Internet data is transmitted to the foreign server through the tunnel. Then, blocked websites such as Google and Youtube are accessed in the name of the overseas server IP node to achieve the purpose of circumvention. After using circumvention software, GFW cannot identify the user's real purpose of access and cannot block the website, so circumvention can be successful.

In short, building your own VPN requires technical and time investment, and may be illegal. It is recommended that ordinary users directly purchase a safe paid VPN, and do not build and sell VPN software privately.

On which devices can the scientific Internet access tool be used?

Today we are going to talk about how to surf the Internet scientifically. If you are in China, you are likely to encounter a situation where you are trying to access a blocked website or application. In this case, you can use scientific Internet access tools, such as a VPN or a ladder, to access the blocked content.

First, let's understand what VPN and VPN are. VPN software achieves scientific Internet access by establishing a virtual private network connection. In other words, you connect to a remote server through VPN, request a website or application on this server, and all traffic will be encrypted, making it impossible for the Great Firewall to detect your real IP address, thereby achieving the purpose of circumventing the firewall. Another type of circumvention tool is VPN, which is usually a software based on SOCKS5 proxy. VPNs parse network requests for blocked content, and then the proxy connects to the remote server to obtain the blocked content and sends them back to your device.

So, on which devices can these scientific Internet access tools be used? As for VPN software, most VPN wall-climbing services on the market currently have good compatibility. These VPN service providers have developed simple and easy-to-use APP clients for various devices, including Windows, MacOS, Android, iOS, Linux, routers, smart TVs, etc. Most VPN services also provide a large number of video tutorials and help documents to help users download, install, set up and use VPNs, so that even VPN novices can get started quickly. If you still don’t understand something, you can directly contact the online customer service.

As for the ladder software, since most of them are operated by individuals or small teams, their compatibility and ease of use are relatively poor. Most of the paid ladders on the market can only be used on Windows devices and Android devices. Some well-known ladder software, such as Lantern, also only supports Windows, Mac, and Android. Some computer experts who rent VPS servers and build Shadowsocks or V2Ray by themselves can use these ladder software to bypass the firewall. However, this method requires a certain level of technical skills to build and maintain.

In short, using scientific Internet tools can help you access blocked websites and applications. VPN software is the most popular and easy-to-use tool on the market. They provide APP clients for a variety of devices and are generally easy to set up and use. For ladder software, if you are a computer expert, you can choose to build it yourself. Otherwise, it is recommended to find some more reliable service providers to buy or use VPN tools.

Which servers/nodes have the fastest speed in circumventing the firewall?

First of all, we need to make a clear concept: there is no absolute speed difference, only relative speed difference. Therefore, when choosing a node to bypass the firewall, you need to consider many factors and comprehensively weigh their advantages and disadvantages.

Generally speaking, servers/VPN nodes that are closer to mainland China have faster connection speeds, while those that are farther away will have slower speeds. At the same time, the level of Internet development in the country/region where the server/node is located will also affect the connection speed. For example, regions such as Hong Kong, Taiwan, Japan, South Korea, and Singapore have developed Internet and advanced network infrastructure, so their servers/nodes often have faster connection speeds. The United States is the center of the global Internet, with rich network resources and a large number of servers, so its servers/nodes also have faster connection speeds.

Of course, the location of the server/node and the level of Internet development are only one of the factors that affect the connection speed. When the server/node location and bandwidth are the same, the number of users will also affect the connection speed. Because when multiple users use the same server/node at the same time, the connection speed will be affected, so choosing a server/node with fewer users is also one of the effective ways to increase the connection speed.

In addition, when you plan to build a VPN, the location and bandwidth of the server are also important factors to consider. Choosing a server located in a country or region surrounding mainland China, such as Hong Kong, can minimize the signal delay caused by distance, and choosing a server with a larger bandwidth can also increase the connection speed.

When buying VPN tools or building VPN ladders, it is also crucial to choose the right brand. There are a large number of different VPN VPN software and VPS service providers on the market, but only a few of them can be used in China and have a certain cost-effectiveness. When choosing, we can refer to the evaluation of other users, or choose some well-known brands, such as ExpressVPN, Surfshark and other well-known VPN service providers.

In short, to get a good experience of circumventing the firewall, you need to consider a variety of factors, including server/node location, Internet development level, bandwidth, and number of users. If you are buying a circumvention tool, try to choose VPN nodes in the United States, Hong Kong, Taiwan, Japan, and Singapore. If you plan to buy a VPS server to build a circumvention ladder yourself, try to buy a VPS server located on the west coast of the United States, Hong Kong, Taiwan, and Singapore. It is worth noting that it is also important to choose a well-known brand of circumvention software or VPS service provider.

Detailed explanation of the proxy agreement

Many netizens choose to use a network proxy to hide their IP addresses and bypass network access restrictions on LANs or firewalls. So what exactly is a proxy? How does it work? Can it really protect online privacy and unlock any online resources around the world?

What is a Proxy & Proxy Server

Proxy is a popular network service that is mainly used to protect online privacy and achieve scientific Internet access, that is, to hide the real IP address and get rid of all customized access restrictions from public networks such as schools, companies, and libraries, as well as firewall restrictions set by the government for cross-border network communication based on national conditions. Proxy
server is the basis and premise for the existence of proxy service, because the core of the proxy's work is to change the direct connection between the user and the target network into a transit connection through an intermediate server, and the proxy server is the traffic transfer station.

How agents work/process

As mentioned above, a proxy is a middleman called a "proxy server" between the client and the network terminal, allowing the user to access the network terminal with the IP address or identity assigned by the proxy server, thereby achieving anonymity in disguise and bypassing previous content filtering.

1. In the device's specific APP, browser or configure proxy parameters, including server address, port number, etc.

2. Open the APP or enter the target address in the browser

3. The initial traffic is sent to the proxy server by the proxy protocol through the initial IP address, and the entry is the port set in the first step.

4. The proxy server forwards the traffic through another port output, using its own IP address to send an access request to the target address
   5. The target network address server receives the access request and responds, returning the data to the proxy server

5. The proxy server then forwards the data to the client, and you’re done!

Note: The proxy server will have a dedicated cache area to store the Internet content received by the user. When the user or other users request to access the same content, the proxy server will directly send the data in the cache area to the user, saving both time and communication costs.

Classification of Web Proxy & Proxy Server 

Network proxies and their servers can be classified differently according to different standards. The following are several common standards and specific classification names:

Agent Classification

According to the agency agreement HTTP Proxy HTTPS Proxy (same as SSL/TLS) SOSKS Proxy FTP Proxy

Telnet Proxy RTSP Proxy POP3/SMTP Proxy …

According to the workflow Forwarding/Forward Proxy Reverse Proxy

According to technical implementation Hardware sharing Internet access Software sharing Internet access

According to the level of work Application layer proxy Transport layer proxy SOCKS Proxy

According to the number of users Shared Agent Dedicated Agent

According to anonymity/security Transparent/Intranet Proxy Ordinary anonymous proxy Highly anonymous proxy Spy Agent

According to user access rights Open Proxy Closed Proxy

According to IP source Residential Agent Data Center Proxy

According to the method of use Public Agent Closed Proxy (Private Proxy) Web Proxy Server

According to the purpose HTTP Proxy SSL/HTTPS Proxy HTTP CONNECT Proxy FTP Proxy

SOCKS Proxy POP3/SMTP Proxy Telnet Proxy TUNNEL Agent

Ssso Proxy Flat Proxy SoftE Proxy Literature Agency

Education Network Agent Springboard Agent …