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In China, according to relevant laws and regulations, all domain names on domestic servers must be filed. This policy aims to standardize Internet information services and safeguard national security and public interests. If an unregistered domain name is resolved to a domestic server for use, the service provider has the responsibility to stop resolving or take measures to ban IP.  In order to avoid IP ban caused by not filing, website operators should know the filing process and requirements in advance, submit the filing application in time, and ensure that the domain name will not be resolved to the domestic server before the filing is completed. At the same time, service providers should also provide clear filing guidance and assistance to help users successfully complete filing.  Globally, Internet service providers (ISPs) and website platforms must abide by the laws and regulations of the countries or regions where they are located. These laws and regulations aim at protecting national security, citizens' privacy, intellectual property rights and other important areas. Violation of these laws and regulations may lead to legal consequences, including but not limited to fines, criminal liability and the ban on IP addresses. In order to avoid IP ban caused by violation of laws and regulations, website operators and users should take the following measures:  Abide by laws and regulations: Understand and abide by Internet laws and regulations in your country or region, and ensure that all online activities are legal and compliant. Content audit: Implement a strict content audit mechanism to ensure that there is no illegal content on the website or server. User education: educate users about laws and regulations, improve their legal awareness, and prevent users from participating in illegal activities. Technical protection: adopt advanced technical means, such as firewall and intrusion detection system, to prevent the server from being used for illegal activities. The attack on the server is one of the common causes of IP temporary sealing. These attacks include but are not limited to DDoS attacks, distributed denial of service attacks, SQL injection attacks, etc. Through these means, the attacker intends to make the server service unavailable, thus affecting the access of normal users.  In the face of attacks, server operators need to take effective protective measures and emergency response strategies. Traffic monitoring and cleaning: deploy a traffic monitoring system to detect abnormal traffic in real time, and use DDoS protection services to clean traffic to reduce the impact of attacks. Firewall and intrusion detection system: configure high-performance firewall and intrusion detection system (IDS) to identify and stop malicious traffic and attacks. Backup and recovery plan: Back up critical data regularly, and make a quick recovery plan, so as to quickly restore services after an attack. Security patches and software updates: Apply security patches and software updates in time to fix known vulnerabilities and reduce attack opportunities.  In the field of social media operation and e-commerce, multi-account IP association is a common problem. When multiple accounts are registered or operated under the same IP address, the security mechanism of the platform may be triggered, resulting in IP being banned. This ban not only affects the normal operation of a single account, but also may have a serious impact on the whole business. Account restriction: According to Facebook's community standards, registering or operating multiple accounts with the same IP address may be regarded as a violation of the platform policy, resulting in the account being restricted or banned. According to statistics, about 15% of accounts are blocked due to IP association problems.  Business interruption: for enterprises that rely on multiple accounts for marketing or sales, IP ban may lead to business process interruption, affecting revenue and customer satisfaction.  In order to avoid IP blocking caused by multi-account IP association, enterprises and individuals can take the following measures: Use different IP addresses: assigning different IP addresses to different accounts can be achieved by using different network connections or VPN services. Abide by the platform policy: read carefully and abide by the use policy of social media and e-commerce platforms to avoid violations. Account management: Implement strict account management measures to ensure that the registration and operation of each account meet the requirements of the platform.  In the field of games and applications, multi-open behavior refers to running multiple applications or game instances on the same device at the same time. This behavior may be regarded as a violation by game or application developers, because it may involve cheating, abuse of resources or other unfair behaviors.  In order to avoid IP blocking caused by multi-opening behavior, users and developers can take the following measures: Abide by the terms of use: users should carefully read and abide by the terms of use of games or applications to avoid illegal behaviors such as opening more games. Technical restrictions: developers can set technical restrictions in games or applications, such as limiting the number of instances running at the same IP address at the same time to reduce the occurrence of multi-opening behavior. User education: Developers should educate users about the risks and consequences of excessive opening behavior through in-game tips and announcements, so as to improve users' compliance awareness.

The availability rate of free proxy refers to the proportion of proxy servers that can successfully connect to and access the target website or service within a certain period of time. This index is a key factor to measure the performance of agency service, which is directly related to user experience and business efficiency. Availability is usually measured by the following criteria:  Connectivity test: send network requests regularly or in real time to check whether the proxy server can successfully connect to the target website or server, reflecting the online status and reachability of the proxy IP.  Response time: Measure the time from sending a request to receiving a response and evaluate the performance of the proxy server. Shorter response time means higher availability and better user experience.  Success rate statistics: record the ratio of the number of successful visits to the target website through the proxy server to the total number of attempts in a period of time, calculate the success rate of the proxy IP, and show the stability and reliability.  Error rate analysis: Monitor and record the types of errors that occur when the proxy server processes the request, such as connection timeout and no response from the target server, so as to evaluate the availability rate of proxy IP.  Stability evaluation: observe the performance of proxy server in a period of time, including the changes of connectivity, response time and success rate, and evaluate its stability. According to the search results, the availability rate of free agents is usually between 20-40%, which means that most free agents may not be able to provide stable services with low quality and high delay.  The availability of free agents is influenced by many factors, mainly including: Network status of proxy server: the stability of network connection of proxy server itself directly affects the availability of proxy IP. If the proxy server network is unstable, users may face problems such as interruption and delay.  User network stability: The network environment of the user's location, such as bandwidth fluctuation and signal interference, will also affect the connection quality with the proxy server, thus affecting the stability and availability of the proxy IP. IP network defense mechanism: Many websites adopt strict access restriction measures, such as blacklisting frequently visited IP addresses, which increases the risk of using proxy IP.  Maintenance level of proxy IP service provider: the management and maintenance level of service provider directly affects the availability of proxy IP. High-quality service providers will regularly clean up and update the IP pool, eliminate unstable or invalid IP addresses, and ensure that users can obtain reliable proxy IP.  Openness risk: Because of its openness, free agent may face higher risks, including the risk of data security and privacy disclosure, so it is not recommended to be used in scenarios with high requirements for security and stability. In order to improve the stability of free agents, the following strategies can be adopted:  Proxy IP rotation: By changing proxy IP regularly, the connection problems caused by blocking a single IP can be reduced. This method can reduce the risk of being identified and blocked by the target website and improve the overall stability.  Load balancing: Using multiple proxy servers to distribute the request load can reduce the pressure of a single proxy server and improve the overall stability and response speed.  Quality monitoring and automatic switching: Real-time monitoring of proxy server performance is implemented, and once a proxy server is found to be slow or unresponsive, it will be automatically switched to a standby proxy server to ensure business continuity.  Optimize the network path: Choosing a proxy server geographically close to the target server can reduce the delay of data transmission and improve the connection stability.  Improve bandwidth and server performance: Although this may require additional costs, improving the bandwidth and performance of proxy servers can significantly improve stability and response speed. Cooperation and paid upgrade: cooperate with high-quality agency service providers, or upgrade to paid services when necessary, in order to obtain more stable and reliable agency services.  Strengthening security measures: Even if free agents are used, necessary security measures should be taken, such as data encryption and security protocols, to protect the security of data transmission.  By implementing the above strategies, we can improve the stability of free agents, reduce business risks and improve the operational efficiency of enterprises to a certain extent.

IP purity refers to the degree to which an IP address is independent, authentic and unpolluted on the Internet. Simply put, IP addresses with high purity usually show less falsehood, fraud or abuse in network behavior. IP purity is very important for network security, data analysis and marketing, because it is related to the safety and reliability of network behavior. Security: A pure IP address can reduce the risk of being detected as abnormal behavior by the platform, thus protecting the account from association. In the field of network security, using pure IP address can greatly reduce the risk of network attack or data leakage.  Accuracy of data analysis: In data analysis and marketing, using pure IP addresses can ensure that the collected data is more authentic and accurate, thus improving the accuracy and effectiveness of analysis. Detecting IP purity is a relatively complex process, which needs to be comprehensively evaluated by combining various technical means and tools. The following are some common detection methods:  IP blacklist checking: Use IP blacklist checking tools or services to check whether the IP address is listed in the public blacklist. Commonly used IP blacklist services include Spamhaus, Project Honey Pot, etc. If an IP address is marked as malicious or abused by multiple blacklist services, its purity may be questioned.  Reverse DNS lookup: Through reverse DNS lookup, you can know the domain name ownership of the IP address. If an IP address is used for a large number of different domain names, there may be a risk of abuse or malicious behavior, thus reducing its purity.  WHOIS query: The network registration information of this IP address can be obtained by using the WHOIS query tool, including the organization and contact information. By analyzing this information, we can preliminarily judge the credibility and purity of the IP address. For example, if an IP address belongs to a well-known large Internet service provider (ISP), its purity may be higher.  Network behavior analysis: observing the network behavior of IP address is also an important method to judge its purity. An IP address with high purity usually shows stable access pattern, compliant network behavior and less abnormal traffic. Third-party service detection: You can also use some third-party services to detect whether IP addresses have malicious behavior or participate in bad network activities. These services are usually evaluated according to the historical behavior and association of IP addresses, and the corresponding purity scores or ratings are given. It should be noted that IP purity is not absolute. Even if an IP address has a high purity, it cannot be completely guaranteed that it will not engage in any bad behavior. In addition, due to the complexity and dynamics of the network environment, the purity of IP addresses may also change over time. Therefore, when judging the purity of IP address, we need to comprehensively consider many factors, including the source of IP address, network behavior and the detection results of technical means.

Selenium Headless browser refers to a browser that runs headless in the background without opening a visual browser interface during testing. This means that the test process is invisible to the user, and all operations are automatically carried out in the background. Selenium supports Headless mode of multiple browsers, including Chrome and Firefox.  The main advantages of headless browser include: Speed and performance advantages: Because there is no need to load a visual interface, the test speed in Headless mode is usually faster than that in normal mode, which is very beneficial for large-scale tests or test scenarios that need frequent execution.  Secrecy and stability: the test in Headless mode will not pop up a visible browser window, and can run silently in the background without affecting the user experience. At the same time, the test is more stable and easy to be integrated into the continuous integration (CI) system because the operation of the browser window is not needed.  Save resources: In some resource-constrained environments, such as automated testing on the server, Headless mode can save system resources and improve performance and stability. How to use Selenium Headless Browser:  Using Selenium's Headless mode is very simple, just add the corresponding options when initializing browser objects. The following is an example of the configuration of Chrome and Firefox headless browsers: For Chrome:pythonfrom selenium import webdriverfrom selenium.webdriver.chrome.options import Optionschrome_options = Options()Chrome _ options.add _ argument ('-headless') # is set to headless mode.Chrome _ options.add _ argument ('-disable-GPU') # Disable GPU acceleration.driver = webdriver.Chrome(options=chrome_options)driver.get('https://www.example.com') # Automation operation ...driver.quit()For Firefox:pythonfrom selenium import webdriverfrom selenium.webdriver.firefox.options import Optionsff_options = Options()Ff_options.headless = True # Set headless mode to True.driver = webdriver.Firefox(options=ff_options)driver.get('https://www.example.com') # Automation operation ...driver.quit()In this way, you can use Selenium for automatic testing in headless mode without opening the browser interface.

In the Internet age, the use of proxy servers is becoming more and more common, especially in areas such as data scraping, anonymous browsing, and network security. However, sometimes we need to confirm whether our IP is used by a proxy server. This article will detail how to check if your IP is used by a proxy server, and provide practical tips and tools to help users better manage network security.1. What is a proxy server?A proxy server is an intermediary server that acts as a bridge between users and target websites. When users access a website through a proxy server, the target website can only see the IP of the proxy server, but cannot obtain the user's real IP. This mechanism plays an important role in protecting user privacy, bypassing geographical restrictions, and increasing access speed.2. Why do you need to check if your IP is used by a proxy server?There are several important reasons to know whether your IP is used by a proxy server:- Privacy protection: Confirming whether a proxy is used can help users know whether they are surfing the Internet anonymously.- Security: Some proxy servers may record users' browsing data, and knowing this can help protect personal information.- Access restrictions: Some websites may impose restrictions on users who use proxies. Confirming whether your IP is proxied can help users avoid these problems.3. How to check whether your IP is proxied3.1 Use online toolsThere are many online tools that can help users check whether their IP is proxied. Here are some commonly used websites:- WhatIsMyIP.com: This website not only displays the user's IP address, but also tells the user whether a proxy server is used.- IPLeak.net: Through this website, users can view their IP address, geographic location, and whether they are using a proxy or VPN.- Whoer.net: This tool can detect the user's IP address and provide detailed proxy information, such as whether it is a transparent proxy, anonymous proxy, etc.3.2 Check HTTP header informationBy checking the header information of the HTTP request, users can determine whether a proxy is used. The specific steps are as follows:1. Use the browser's developer tools (usually opened by pressing the F12 key).2. Switch to the "Network" tab and refresh the page.3. Check the HTTP header information of the request and look for the "X-Forwarded-For" or "Via" fields. If these fields exist, it means that the request has passed through a proxy server.3.3 Using command line toolsFor technical users, you can use command line tools to check whether the IP is proxied. For example, use the `curl` command:```bashcurl -I http://ipinfo.io```The command will return the IP information, including whether a proxy server is used.4. How to identify different types of proxiesThere are many types of proxy servers, and each type affects users differently. Here are some common types of proxies:- Transparent proxy: This proxy does not hide the user's real IP address, and the target website can see the user's IP information.- Anonymous proxy: This proxy hides the user's IP address, but provides the target website with the proxy server's IP information.- High anonymity proxy: This proxy not only hides the user's real IP address, but also does not reveal the existence of the proxy to the target website.Using online tools or HTTP header information checks can help users identify the type of proxy they are using.5. Risks and Prevention of Proxy ServersWhile proxy servers have many advantages, they also have certain risks. Here are some common risks and their prevention measures:- Data leakage: Some unreliable proxy servers may record users' browsing data. Choosing a reputable proxy service provider can reduce the risk.- Malware: Some free proxy services may inject malware. It is recommended to use a paid, well-known proxy service to ensure security.- Access restrictions: Some websites may prohibit users who use proxies from accessing. Knowing whether you are using a proxy can help users avoid these restrictions.Checking whether your IP is used by a proxy server is an important part of network security management. By using online tools, checking HTTP header information, and command line tools, users can easily confirm their IP status. At the same time, understanding the different types of proxies and their risks can help users make more informed decisions. When choosing a proxy service, be sure to choose a reputable provider to protect personal privacy and data security. I hope this article can provide you with valuable information to help you better manage your network experience.

In today's Internet era, proxy IP is widely used in fields such as data crawling, network security, and anonymous browsing. However, many users often encounter slow speed problems when using proxy IP. This article will explore effective ways to make proxy IP faster to help users improve their network experience.1. Choose high-quality proxy serviceThe speed of proxy IP is closely related to its service quality. It is crucial to choose a reputable proxy service provider. High-quality proxies usually have the following characteristics:- Stability: High-quality proxy services can provide higher online time and reduce disconnection.- Bandwidth: Make sure the proxy service provides enough bandwidth to support high-speed data transmission.- Geographic location: Choosing a proxy server close to the target website can reduce latency and increase access speed.2. Use dedicated proxiesMany proxy services offer two options: shared and dedicated proxies. Shared proxies are often slower because they serve multiple users at the same time. Dedicated proxies are only for a single user and can provide faster speeds and better stability. Although dedicated proxies are more expensive, they are a worthy investment for users who need high speeds.3. Optimize proxy settingsWhen using proxy IP, correct configuration and settings will also affect the speed. Here are some optimization suggestions:- Choose the right protocol: Different proxy protocols (such as HTTP, HTTPS, SOCKS5) have their own advantages and disadvantages in speed and security. Choosing the right protocol according to your needs can effectively improve the speed.- Reduce the number of requests: When crawling data, try to reduce the number of requests. This can be achieved by batching requests or arranging request intervals reasonably.4. Use load balancingIf you need to handle a large number of requests, consider using load balancing technology. Load balancing can distribute requests to multiple proxy servers, thereby improving overall access speed and stability. Many advanced proxy service providers support load balancing.5. Change proxy IP regularlyUsing the same IP for a long time may result in restricted access by the target website, thereby affecting the speed. Changing proxy IP regularly can not only avoid being blocked, but also improve access speed. Many proxy service providers provide the function of automatically changing IP, which users can set according to their needs.6. Monitor proxy performanceUse monitoring tools to regularly check proxy performance, including speed, stability, and response time. Through monitoring, problems can be discovered and adjusted in a timely manner. For example, if the speed of a proxy drops significantly, you can consider replacing or reconfiguring it.7. Avoid peak hoursThe speed of proxy services may be affected during peak hours. Try to avoid data crawling or large-scale access during network peak hours to effectively improve speed. Understand the peak access hours of the target website and arrange the operation time reasonably.8. Use VPN with proxyIn some cases, combining VPN and proxy can effectively improve speed. VPN can encrypt data and hide the real IP, while proxy can increase access speed. Choosing the right combination according to specific needs can improve network performance to a certain extent.Increasing the speed of proxy IP is not a one-day job, and multiple factors need to be considered comprehensively. By choosing high-quality proxy services, optimizing settings, changing IP regularly, and monitoring performance, users can significantly improve the experience of using proxy IP. I hope that the practical tips provided in this article can help you achieve faster network speeds and enjoy a smoother online experience when using proxy IP.

Create a PHP file and write the proxy server code locally or on the server. Get the request, and use $_SERVER[' request _URI'] and $_SERVER[' request _ method'] to get the request URI and request method of the client. Select the proxy server, and select the proxy server to use according to the domain name or other rules in the request URI. Send a request, and use the cURL library or other HTTP client libraries to send a request to the proxy server. Receive the response and wait for the proxy server to return the response. Output the response, that is, output the response header and response body to the client in the corresponding format.  The application scenarios of PHP proxy include: PHP proxy is a technology implemented on the server side, which allows PHP scripts to act as intermediaries between the client and the target server. Through the PHP proxy, you can access other services or sites and pass the request response back to the client. The main function of proxy server is to hide the real communication details between client and server, thus improving network security. Proxy servers are divided into forward proxy and reverse proxy. Forward proxy means that the client requests the proxy server to access other services or sites, while reverse proxy means that when the client requests the service site, it is redirected to the proxy server, and then the proxy server forwards the request to the real server.  The steps for PHP to implement a proxy server usually include: Remote Proxy: Provides local proxies for objects located in different address spaces, so that clients can access remote objects just like local objects. Virtual proxy: create expensive objects as needed, store instantiation operations of instantiated objects through proxies, and instantiate them only when really needed, thus saving system resources.  Protection proxy: controls access to the original object, which can be used in scenarios such as permission control.  Intelligent reference proxy: when accessing an object, attach some extra operations, such as recording access logs and handling abnormal situations. The working principle of PHP proxy involves using cURL library or other HTTP client libraries to send requests to proxy servers and receive responses. When sending a request, you need to pay attention to passing the client request method, request header and request body to the proxy server. When receiving a response, you need to pay attention to passing the response header and response body returned by the proxy server back to the client.  In practical application, it can be modified and expanded as needed to meet various needs. For example, you can use PHP to implement a reverse proxy server and forward all API paths requested by the client to the specified server. In addition, you can also use PHP to realize efficient proxy forwarding function and deeply understand proxy_pass configuration and optimization skills. Generally speaking, PHP proxy is a powerful tool, which can help developers realize the forwarding and processing of requests on the server side and improve the flexibility and security of applications.

Anti-fingerprint browser is a privacy protection tool, which prevents websites and online service platforms from collecting users' "fingerprint" information by technical means, thus realizing anonymous browsing and multi-account management of users on different platforms. This tool is used in a wide range of scenarios, including but not limited to social media account management, e-commerce operation, web crawler and data collection, and teamwork. Each browser profile created by the user through the anti-fingerprint browser has a unique fingerprint, which makes it impossible for different accounts on the same device to be associated with each other.  The main functions of the anti-fingerprint browser include: Multi-account management: allows users to manage multiple accounts on the same device, and each account has an independent browser environment and fingerprints, effectively avoiding platform association detection. Web Scraping: When collecting network data, the anti-fingerprint browser can prevent users from being blocked by websites, and it can keep stable operation even in the face of complex anti-crawler mechanism. Account farming: Support users to create and operate multiple accounts, which are used for social media marketing or other online activities, without arousing suspicion from the platform. Access to geographically restricted content: By changing the IP address and browser fingerprint, users can bypass geographical restrictions and access online content that is usually not available in their region. Account life: By hiding users' real information and activity patterns, the anti-fingerprint browser helps to extend the life of accounts on platforms with strict security measures. Teamwork: In a team environment, different members can manage their browser configuration files without the risk of data cross-contamination, which improves the work efficiency and security of the team. Some well-known anti-fingerprint browsers in the market, such as GoLogin, Marketer Browsing LAuth, Lalicat and ANTBrowser, each provide different functions and pricing models to meet the needs of different users. These browsers effectively cover up users' activities and prevent them from being discovered by anti-fraud systems of social networks and trading platforms by changing the identifiable elements such as fingerprints, WebRTC, canvas and WebGL. According to the market report in 2023, GoLogin browser provides a simple user interface starting at $24 per month, which supports multi-device access, including online version and Android application. Marketers' browser offers an alternative to China's anti-fingerprint browser starting at $19 per month, although it requires a lot of storage space and memory. As a new competitor from Brazil, LAuth browser offers a 7-day free trial, but the price is relatively high, starting from $60 per month. As a Chinese copy, Lalicat browser looks unsafe and outdated, starting from $59 per month, free trial is available. ANTBrowser is a small competitor based on Firefox, which provides basic anti-fingerprint browser functions. The anti-fingerprint browser industry has developed rapidly in recent years. With the increasing demand for multi-account management by digital agency companies, SMM marketers and purchasing agents, anti-fingerprint browsers have become an essential tool for their daily work. According to statistics, there are many substitutes in the market, ranging from replicas of well-known market leaders to unique handmade tools, with different prices and safety, showing the rapid expansion and diversification of the industry. According to the market report in 2023, the market scale of anti-fingerprint browser continues to grow, especially in CIS countries, such as AQUM browser in Ukraine and LAuth browser in Brazil. The emergence of these emerging competitors reflects the growing demand for anti-fingerprint browsers in regional markets. In addition, with the development of technology and the diversification of users' needs, the functions of anti-fingerprint browser are also expanding. From basic multi-account management to advanced API automation, the industry is developing in a more efficient and safer direction. In the anti-fingerprint browser market, GoLogin browser stands out with its simple user interface and multi-device access support, and becomes one of the market leaders in 2023. GoLogin offers a variety of pricing plans starting from $24 per month, as well as free and paid plans to meet the needs of different users.  As a substitute for China's anti-fingerprint browser, Marketer Browser provides a free plan, but it needs at least 40GB of available space and more than 8GB of memory, which limits its popularity among users with limited resources. Nevertheless, its price is relatively low, starting from $19 per month, which is a considered choice for users with limited budget.  As a new competitor in the Brazilian market, LAuth browser offers a 7-day free trial and a higher pricing plan, starting from $60 per month. Although its market positioning is obviously biased towards Brazil, its good visual effects and marketing strategies on social media have also attracted a certain number of international users. As a Chinese copy, Lalicat browser's security and outdated design have been questioned by the market, and the price starting from $59 per month is relatively high without sufficient social proof.  As a small competitor based on Firefox browser, ANTBrowser provides basic anti-fingerprint browser function, and its price is relatively cheap, with a fixed price of $32 per month, which is an attractive choice for the Russian local market. Generally speaking, the anti-fingerprint browser market is fiercely competitive, and the main competitors compete for market share by providing different functions, pricing and services. With the continuous progress of technology and the changing needs of users, it is expected that more innovative and diversified products will appear in the market in the future.

Node unlocker, such as FullTClash bot, is a robot program based on Telegram platform, which is specially designed to detect the unlocking ability of network proxy nodes for streaming media services. Through a series of automatic tests, it evaluates the performance and stability of each node and provides users with the best node selection.  The core functions of FullTClash bot include:  Configuration loading: users can upload the Clash configuration file, which contains the detailed information of multiple proxy nodes, such as IP address, port and protocol. Batch connectivity test: automatically test the connectivity of the nodes listed in the configuration file, including but not limited to the access ability of streaming media services such as Netflix and YouTube. Network performance test: HTTP delay test, link topology test and downlink speed test are conducted to evaluate the network performance of nodes. Results presentation: The test results are sent to users by Telegram in the form of pictures, showing key information such as connectivity, delay and streaming media unlocking quality of each node. Node unlocker plays an important role in many application scenarios, mainly including:  Individual users: Individual users use the node unlocker to optimize their streaming media experience. By testing different proxy nodes, users can choose the node that can provide the smoothest and most stable service, thus improving their viewing experience.  Enterprise users: Enterprise users, especially those companies that provide multinational services, can use the node unlocker to ensure the availability and performance of their services on a global scale. For example, a company providing global video conferencing service may use FullTClash bot to test nodes in different countries to ensure that users in all regions can get low-latency and high-stability services.  Network service providers: Network service providers can use the node unlocker to test and optimize their network infrastructure. By evaluating the performance of different nodes, service providers can identify and solve network bottlenecks and improve the service level of the whole network. Technology developers: Developers can use the node unlocker to test the performance of their applications in different network environments. This is especially important for developing distributed applications that need to run on a global scale. Network security experts: Network security experts can use the node unlocker to evaluate the security and stability of the network. By testing different nodes, experts can identify potential security risks and take measures to strengthen the defense capability of the network. Through automatic testing and data analysis, the node unlocker provides an effective method for different user groups to evaluate and select the best network nodes, thus optimizing their network experience and application performance.  Its working principle mainly includes the following steps: Configuration loading: the user uploads the Clash configuration file to FullTClash bot through the Telegram interface. This configuration file contains information of multiple proxy nodes, such as IP addresses, ports, protocols, etc.  Batch connectivity test: FullTClash bot automatically performs batch connectivity test by using the proxy node information in the configuration file. The test content includes the access test of specific streaming media services (such as Netflix, YouTube, etc.) and the test of other network services and projects.  Network performance testing: In addition to connectivity testing, FullTClash bot can also conduct network performance testing, such as HTTP delay testing, link topology testing and downlink speed testing. These tests help users to understand the network performance and stability of different nodes.  Results presentation: After the test is completed, FullTClash bot will summarize the test results into pictures and present them to users through the Telegram interface. The results include the connectivity of each node, the delay, the unlocking quality of streaming media and other information, which helps users choose the best node to get the best streaming media experience.  Node optimization: According to the test results, users can choose the node with the best performance and the highest unlocking quality to ensure the quality and speed of streaming media services. In this way, FullTClash bot can help users evaluate and select the best proxy nodes, optimize network configuration, and improve the access quality and speed of streaming media and other network services.  In this way, the node unlocker can effectively help users choose the best node to ensure that they can get the best streaming media experience.

Both proxy and firewall are important parts of network security, but their functions and working principles are different. Proxy is a kind of network intermediary service, which acts as a bridge between client and server. Proxy server can cache data, improve access speed, and at the same time, it can analyze and filter data packets at the application layer, providing a certain degree of security and anonymity. The proxy server can hide the user's real IP address and use the proxy server's IP address to communicate with the target server, which helps to protect the user's privacy. Proxy servers usually work in the application layer of OSI model, so they can handle higher-level protocol details, such as HTTP and FTP.  Firewall is a more basic security measure, and its main function is to monitor and control the data flow in and out of the network. Firewall allows or denies the transmission of data packets through predefined security rules, thus protecting the internal network from external threats and unauthorized access. A firewall can be a hardware device, a software program, or a combination of both. Firewalls usually work at the network layer and the transport layer, and check the source address, destination address and port number of the packet to decide whether to allow the packet to pass. Generally speaking, agents focus more on providing intermediary services and a certain degree of privacy protection, while firewalls focus on network access control and preventing unauthorized access. In practical application, proxy and firewall are often combined to provide more comprehensive network security protection.