Domain name resolution is the process of converting human-readable domain names into computer-recognizable IP addresses. On the Internet, every device has a unique IP address, which is assigned by ICANN (Internet Corporation for Assigned Names and Numbers). However, an IP address is a string of numbers that is difficult to remember and type, so domain names were created that convert IP addresses into readable strings, making them easier for people to remember and use.The principle of domain name resolution is based on DNS (Domain Name System). DNS is a hierarchical, distributed naming system used to identify and locate devices on the Internet. The DNS server stores the mapping relationship between the domain name and the corresponding IP address. When the user enters the domain name in the browser, the DNS server will resolve the domain name into the corresponding IP address and send the request to the server corresponding to the IP address.The process of domain name resolution can be divided into the following steps:1. The user enters the domain name in the browser.2. The browser sends a request to the local DNS server.3. The local DNS server queries the cache. If the IP address corresponding to the domain name is in the cache, it is returned directly to the browser.4. If the local DNS server does not cache the IP address corresponding to the domain name, send a request to the root DNS server.5. The root DNS server returns the address of the top-level domain name server.6. The local DNS server sends a request to the top-level domain name server.7. The top-level domain name server returns the address of the secondary domain name server.8. The local DNS server sends a request to the secondary domain name server.9. The secondary domain name server returns the IP address corresponding to the domain name.10. The local DNS server returns the IP address to the browser and stores the mapping relationship in the cache.It should be noted that since the DNS system is distributed, domain name resolution may involve interactions between multiple DNS servers, which will cause a certain delay. Therefore, in order to improve access speed, it is recommended to use a local DNS server or a third-party DNS service provider to reduce delays and improve response speed.In short, domain name resolution is the process of converting human-readable domain names into computer-recognizable IP addresses. It relies on the DNS system and involves interactions between multiple DNS servers. Understanding the principles and processes of domain name resolution can help us better understand the Internet infrastructure and optimize the network access experience.
Domain name resolution error means that when accessing a website, the domain name cannot be converted into the corresponding IP address, resulting in the inability to access the website normally. This is a common network problem, but for non-experts, it can be confusing and overwhelming. The following will introduce some common domain name resolution errors and their solutions, hoping to help everyone solve this problem.First, we need to understand the principle of domain name resolution. When we enter a URL in the browser, such as www.example.com, the browser will send a query request to the local DNS server to ask for the IP address corresponding to the domain name. The local DNS server will answer this query request based on its own cache record. If there is no cache record, it will issue a query request to the root DNS server. The root DNS server will tell the local DNS server the IP address of the top-level domain name server corresponding to the domain name, and the local DNS server will then send a query request to the top-level domain name server. This process continues until the IP address corresponding to the domain name is finally found, and then the IP address is returned to the browser, and the browser can access the website through this IP address.So, when a domain name resolution error occurs, how should we solve it? Here are some common solutions:1. Check the network connection: First, make sure your network connection is normal. You can try to visit other websites to confirm whether the network is working properly.2. Clear the DNS cache: Sometimes the cache of the local DNS server may be expired or incorrect, resulting in domain name resolution errors. You can try clearing the local DNS cache to resolve this issue. The specific operation methods may vary depending on the operating system. You can find corresponding tutorials through search engines.3. Change the DNS server: If the problem still cannot be solved after clearing the DNS cache, you can try changing the DNS server. Normally, we use the default DNS servers provided by the operator, but sometimes these servers may be unstable or slow. You can try to use some public DNS servers, such as Google's 220.127.116.11 and 18.104.22.168, to see if the problem can be solved.4. Check the firewall settings: Sometimes firewall settings can also cause domain name resolution errors. You can try temporarily turning off the firewall to see if that solves the problem.5. Check whether the domain name is correct: Sometimes we may make spelling mistakes or input errors when entering the domain name. You can double-check whether the entered domain name is correct.6. Contact the website administrator: If none of the above methods solve the problem, then there is probably a problem with the website itself. You can try contacting the site administrator and reporting the issue to them.To sum up, domain name resolution errors are a common but troublesome problem. This problem can usually be solved by checking the network connection, clearing the DNS cache, changing the DNS server, checking the firewall settings, checking whether the domain name is correct, and contacting the website administrator. But if the problem persists, you may need to seek professional help for further troubleshooting and repair.
Domain name resolution is a very important link in the Internet. Its existence allows us to access websites through simple and easy-to-remember domain names without having to remember complex IP addresses. So, why do we need domain name resolution?First of all, domain name resolution can make it easier for us to remember and use Internet resources. In the early days of the Internet, people needed to remember a string of numerical IP addresses to access websites, which was very difficult for most people. With domain name resolution, we only need to remember a simple domain name to easily access the corresponding website. For example, we only need to enter "www.google.com" to enter the Google search engine without remembering its corresponding IP address.Secondly, domain name resolution can improve the reliability and flexibility of the website. In the Internet, IP addresses change dynamically, especially for large websites, the IP addresses of their servers may change frequently. If we access the website directly through the IP address, once the server's IP address changes, we will no longer be able to access the website. Through domain name resolution, we only need to update the mapping relationship between domain names and IP addresses to achieve seamless switching to a new server.In addition, domain name resolution can also improve network security. There are a large number of malware and hacker attacks on the Internet. They may resolve legitimate domain names to malicious IP addresses by tampering with DNS servers, thereby conducting illegal activities such as phishing and hijacking user information. To prevent this from happening, we can improve network security by using a trusted DNS server for domain name resolution.Finally, domain name resolution can also achieve load balancing and failover. For large websites, in order to cope with high concurrent access and ensure the stability of the website, multiple servers are usually used for load balancing. Through domain name resolution, we can resolve a domain name to the IP addresses of multiple servers, thereby achieving request distribution and load balancing. When a server fails, we only need to remove its corresponding IP address from the domain name resolution to achieve failover.
Domain name resolution address refers to the process of converting domain names into IP addresses. In the Internet, each device has a unique IP address, and domain names exist to facilitate people's memory. Domain name input can be converted into the corresponding IP address through domain name resolution, thereby realizing network communication. So, how to check the domain name resolution address?First, we need to understand the principles of domain name resolution. In the Internet, domain name resolution is completed through DNS servers. DNS server is a special server that stores a large amount of domain name and corresponding IP address information. When we enter a domain name, the computer will send a request to the DNS server, requesting the DNS server to return the corresponding IP address. The DNS server will return the corresponding IP address based on its own records, and the computer will communicate with the target device based on this IP address.So, how to check the domain name resolution address? Here are several methods.Method 1: Use the ping commandThe ping command is a commonly used network tool, which can be used to test network connections and view domain name resolution addresses. In a Windows system, open a command prompt window and enter ping plus the domain name to be queried, for example:ping www.google.comAfter pressing the Enter key, the system will send a request to the DNS server and return the corresponding IP address. If the connection to the target device is successful, a message similar to the following will be displayed:Pinging www.eg.com [127.0.0.1] with 32 bytes of data:Reply from 127.0.0.1: bytes=32 time=22ms TTL=52Reply from 127.0.0.1: bytes=32 time=23ms TTL=52Reply from 127.0.0.1: bytes=32 time=23ms TTL=52Reply from 127.0.0.1: bytes=32 time=22ms TTL=52Ping statistics for 127.0.0.1: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: Minimum = 22ms, Maximum = 23ms, Average = 22msAmong them, [127.0.0.1] is the IP address queried.Method 2: Use the nslookup commandThe nslookup command is also a tool for querying domain name resolution addresses. In Windows systems, also open a command prompt window and enter nslookup plus the domain name to be queried, for example:nslookup www.google.comAfter pressing the Enter key, the system will send a request to the DNS server and return the corresponding IP address. If the connection to the target device is successful, a message similar to the following will be displayed:Server: UnknownAddress: x.x.x.xNon-authoritative answer:Name: www.eg.comAddresses: 127.0.0.1 127.0.0.1Among them, listed under Addresses is the IP address queried.Method 3: Use online query toolsIn addition to using command line tools, we can also use online query tools to query domain name resolution addresses. For example, if we enter "domain name resolution address query" in the google search box, a large number of online query tools will appear for us to choose from. Choose a trustworthy website, enter the domain name you want to query, and click the query button to get the corresponding IP address.ConclusionThe above are several ways to check the domain name resolution address. Whether it is the ping command, nslookup command or online query tool, it can help us quickly query the desired IP address. Of course, in practical applications, we can also implement customized domain name resolution by modifying the hosts file.
Configuring Proxy on Incogniton - An Anti-Detect BrowserIncogniton is a very user-friendly anti browser. It is compatible with both Mac and Windows operating systems. To use Incogniton, you can get a free starter package. With Incogniton, you can replace multiple computers with virtual browser profiles and still be assured that your data is safe and private. Each profile has a different digital fingerprint associated with it. So, it is more like having different persons using the same browser! What is an Anti-Detect Browser?As the name shows, an anti-detect browser helps you remain anonymous on the internet. It does this by creating a fake digital fingerprint for your browsing profile. So whenever you surf the internet, your actual browser fingerprint is not tracked. Instead, the fake fingerprint is tracked. Anti-detect browsers do a lot more than that. Many of them, like Incogniton, have the capabilities to manage multiple accounts and browsing profiles from a single interface. It eliminates the use of multiple computers to manage different browsing profiles. They do this while still ensuring the highest level of anonymity and privacy you desire. How to Configure Proxy on Incogniton?Step 1. Download Incogniton and log in.First, download and install Incogniton on your device from the official website. Launch your browser and log in to your Incogniton account; if you don't have an existing account, create a new one.Incogniton Application DownloadStep 2. Click the "New profile" button above.Step 3. Navigate to Profile Overview and set the browser profile name. Click "Add proxy".Step 4. Generate proxy information on PYPROXY.Step 5. Copy the proxy information you generated on PYPROXY and paste it into Incogniton. For proxy types, PYPROXY supports HTTP/HTTPS/SOCKS5. In this case, we will use SOCKS5.Step 6. Click "Check proxy". It shows connected to proxy. Congratulations, you have successfully set up the proxy.Step 7. After the settings are complete, click "Create profile".Step 8. Click "Start" and a browser window will open and you can start surfing the Internet using a proxy! To check if the proxy is working properly, enter the URL ipinfo.io. The site will display the IP address you are currently using.
When performing web crawling tasks, using proxy IP is a common technical means. The function of proxy IP is to hide the real IP address and access the target website through the proxy server, so as to protect privacy, improve crawling efficiency and avoid bans.First of all, using a proxy IP can protect personal privacy. When performing web crawler tasks, we may need to access some sensitive data or perform a large number of request operations. If you directly use your real IP address, you may be identified by the target website and take blocking measures. By using proxy IP, we can hide the real IP address, reduce the risk of being banned, and protect personal privacy.Secondly, using proxy IP can improve crawling efficiency. When crawling large-scale data, we may need to frequently request the target website. If the same IP address is used for each request, it can easily be identified as malicious behavior by the target website and limit the access speed or directly block the IP. By using proxy IP, we can rotate different IP addresses to make requests, thus bypassing the restrictions of the target website and improving crawling efficiency.In addition, using proxy IP can also circumvent geographical restrictions. Some websites or services may be restricted based on a user's geographical location, such as only allowing access to users in a specific region. By using proxy IP, we can choose IP addresses in different regions to access, bypass geographical restrictions, and obtain the required data or services.However, choosing the right proxy IP is also a technical challenge. First of all, ensure the stability and reliability of the proxy IP. Some free proxy IPs may be unstable or unreliable, causing request failures or inaccurate data. Therefore, when choosing a proxy IP, you need to consider its stability and reliability, which can be verified through testing or evaluation.Secondly, choose an appropriate proxy IP pool. A proxy IP pool refers to a set of available proxy IP addresses. When performing web crawling tasks, we may need a large number of proxy IPs to be used in rotation. Therefore, it is very important to choose a proxy IP pool with a rich and stable proxy IP pool.Finally, use proxy IP reasonably. Although using proxy IP can bring many benefits, you also need to pay attention to reasonable use and comply with web crawler specifications and laws and regulations. Proxy IPs should not be abused for illegal activities or malicious attacks on target websites.To sum up, using proxy IP is one of the commonly used technical means in web crawlers. By choosing an appropriate proxy IP and using it rationally, we can protect personal privacy, improve crawling efficiency, and circumvent restrictions, thereby better completing web crawler tasks.
Proxy IP is an indispensable part of the crawler field, it can help us avoid being banned or restricted access. However, when choosing a proxy IP, we often face a question: Should we choose SOCKS5 or HTTP?First, we need to understand the difference between SOCKS5 and HTTP. SOCKS5 is a network protocol that enables communication between the application layer and the transport layer. HTTP is an application layer protocol, which is mainly used for communication between web browsers and web servers. Therefore, SOCKS5 is more flexible and can support more applications, while HTTP is more focused on Web applications.When choosing a proxy IP, we need to consider the following aspects:1. Restrictions on the target website: Some websites may restrict access using SOCKS5 proxy IP, so we need to choose an appropriate proxy IP based on the situation of the target website.2. Program support: If the program we need to use only supports HTTP proxy IP, then there is no point in choosing SOCKS5 proxy IP.3. Speed and stability: When choosing a proxy IP, we need to consider its speed and stability. Some SOCKS5 proxy IPs may be faster than HTTP proxy IPs, but may be slightly less stable.4. Security: SOCKS5 proxy IP is more secure than HTTP proxy IP because it can encrypt the transmitted data. If we need to protect data security, then choosing SOCKS5 proxy IP is a good choice.Taken together, there is no standard answer to choosing a proxy IP. We need to make choices based on specific circumstances. If the target website restricts the use of SOCKS5 proxy IP, then we need to use HTTP proxy IP; if we need to protect data security, then choosing SOCKS5 proxy IP is a better choice.However, no matter which proxy IP we choose, we need to pay attention to some details. For example, we need to change the proxy IP regularly to avoid being banned; we also need to choose a stable, fast, and low-latency proxy IP to ensure that the crawler program can run normally.In short, when choosing a proxy IP, we need to consider many factors and make a choice based on the specific situation. Only in this way can the normal operation of the crawler program be guaranteed to the greatest extent.
Free proxy IP has always been a controversial topic in the online world. On the one hand, free proxy IP provides users with convenience and can help users bypass geographical restrictions, protect personal privacy, etc. On the other hand, free proxy IPs also have some security risks, which may bring some risks to users.First of all, the security of free proxy IP cannot be guaranteed. Since providers of free proxy IPs usually do not undergo strict review and supervision, it is difficult to determine their true identity and intentions. Some criminals may use free proxy IPs to conduct network attacks, steal user information and other illegal activities. Therefore, you need to be particularly careful when using free proxy IPs to avoid leaking sensitive personal information.Secondly, the stability of free proxy IP is also a problem. Since providers of free proxy IPs usually do not have enough resources to maintain and manage servers, problems such as unstable connections and slow speeds are prone to occur. This will not only affect the user's online experience, but may also cause some online operations to fail or cause errors. Therefore, if you need a stable network connection and high-speed Internet experience, it is recommended to choose a paid proxy service.In addition, there is a risk of abuse of free proxy IP. Since free proxy IP resources are limited, if it is used by a large number of users at the same time, it will easily lead to problems such as insufficient bandwidth and excessive server load. This will not only affect the normal use of other users, but may also cause the entire proxy server to crash. Therefore, when using free proxy IP, you should abide by the usage rules and avoid abusing resources.Finally, the anonymity of free proxy IPs is also unreliable. Although using a proxy IP can hide the user's real IP address, it does not completely guarantee the user's anonymity. Some advanced technical means can still reveal the true identity of users by analyzing network traffic and tracking user behavior. Therefore, when using free proxy IP, users should remain vigilant and try to avoid operations involving personal privacy and sensitive information.To sum up, although free proxy IP brings certain conveniences to users, there are also some security risks. When using free proxy IP, users should remain vigilant, choose a reliable provider, and strictly abide by the usage rules to ensure their own network security and the protection of personal privacy. If you need a higher level of security protection and a better Internet experience, it is recommended to choose a paid proxy service.
Exclusive proxy pool and shared proxy pool are two common types of proxy pools. They have different characteristics and applicable scenarios. When choosing a proxy pool, you need to choose the appropriate type based on your needs and actual situation.An exclusive proxy pool refers to a group of IP addresses exclusive to a certain customer, and these IP addresses can only be used exclusively by that customer. The main advantages of such a proxy pool are stability and security. Since all IP addresses are exclusive to that customer, there will be no chance that someone else will be banned from using the IP address. At the same time, because the exclusive proxy pool is provided by a dedicated provider, its stability and reliability are also guaranteed. However, the disadvantage of this kind of proxy pool is its high cost and it is suitable for scenarios with high requirements on stability and security.A shared proxy pool refers to a group of IP addresses shared by multiple customers. The main advantages of such a proxy pool are its low cost and high flexibility. Since multiple customers share a single IP address, costs can be effectively controlled. At the same time, because the provider can dynamically allocate IP addresses, it can be flexibly adjusted according to customer needs. However, the shared proxy pool also has some disadvantages. For example, other people may use the IP address, resulting in being banned. At the same time, the stability and reliability are not as good as the exclusive proxy pool.In summary, both the exclusive proxy pool and the shared proxy pool have their own advantages and disadvantages, and you need to choose based on the actual situation. If you have high requirements for stability and security and have enough budget, you can choose an exclusive proxy pool; if cost and flexibility are more important, you can choose a shared proxy pool. Of course, when choosing a supplier, you also need to carefully consider its service quality and reputation to ensure that you can receive satisfactory agency services.
During network access, we often encounter some restrictions or blocks. For example, some websites may not be accessible in specific areas, or some network services may be blocked on the company or school network. To solve these problems, we can use HTTP proxies to bypass restrictions and access blocked content.VPS (Virtual Private Server) is a virtual server that can provide powerful computing and network resources. By building an HTTP proxy on the VPS, we can achieve freer network access.Here are some steps to help you set up an HTTP proxy on your VPS.Step 1: Choose the right VPS provider. There are many VPS providers on the market, and you can choose a suitable one based on your needs. Generally speaking, factors you need to consider include price, bandwidth, server location, etc.Step 2: Purchase a VPS and configure it. After purchasing a VPS, you need to log in to the VPS management interface and perform some basic configurations, such as selecting an operating system and setting an administrator password.The third step is to connect to the VPS. You can use tools such as SSH to connect to the VPS and perform subsequent operations through the command line interface.Step 4: Choose a suitable proxy server provider. Setting up a proxy on the VPS is a key step in building an HTTP proxy.Step 5: Start the proxy service. After the installation is complete, you need to start the proxy service and set it to start automatically at boot. In this way, the proxy service will automatically start every time the VPS is restarted.Step 6: Configure the local proxy client. On your local device, you need to configure the proxy client and point it to the HTTP proxy you built. For specific configuration methods, please refer to the official documentation of the agent software.Step 7: Test whether the proxy is effective. After completing the above steps, you can try to access the blocked website or service to see if you can successfully access it. If everything is normal, congratulations, you have successfully set up an HTTP proxy!It should be noted that building an HTTP proxy requires certain technical knowledge and experience. If you don’t know much about networks and servers, it is recommended to learn relevant knowledge first or seek help from professionals.In addition, the use of HTTP proxy also needs to comply with local laws, regulations and network usage policies. Do not use the proxy service to conduct illegal activities or violate the user agreement.To sum up, by setting up an HTTP proxy on a VPS, you can achieve more free and secure network access.