Proxy IP refers to the IP address obtained through a proxy server, which can be used to protect the real IP address, switch regions, speed up access, etc. Preventing account association and obtaining and verifying proxy IP is a necessary skill in scenarios such as large-scale data crawling and network security testing. This article will introduce the method of preventing proxy IP from obtaining and verifying account association.

1. Proxy IP acquisition method

1. Free proxy IP website

There are many websites on the market that provide free proxy IPs. These websites provide a large number of free proxy IPs, but the quality is uneven, and there may be problems such as unusable and slow speed. Therefore, we need to screen the obtained proxy IPs.

2. Paid proxy IP service providers

Compared with free proxy IP websites, the proxy IPs provided by paid proxy IP service providers are of higher quality, faster speed, and better stability. Paid proxy IP service providers usually provide API interfaces, which can easily prevent account association and verification.

3. Self-built proxy server

If you have your own server, you can also build a proxy server to obtain the proxy IP. The advantage of self-built proxy servers is that you can freely control the quality and stability of proxy IPs, but it requires a certain level of technology.

2. Proxy IP verification method

After obtaining the proxy IP, it needs to be verified to ensure its availability and stability.

1. Verify the connection speed

Use tools such as the curl command or Python requests library to access a static web page and record the access time. Then use the proxy IP to access the same web page again and calculate the access time difference. If the time difference is small, it means that the proxy IP has a faster connection speed.

2. Verify whether it is anonymous

Use websites such as httpbin.org to perform anonymity tests. Visit httpbin.org/ip to view the current IP address, and then use the proxy IP to access the website again to see if the returned IP address is different from the original one. If the returned IP address is the same as the original one, it means that the proxy IP is not anonymous.

3. Verify whether it is available

Use tools such as the Python requests library to access a static web page and record the return status code. Then use the proxy IP to access the same web page again to see if the return status code is the same as the original one. If the status code is the same, it means that the proxy IP is available.

4. Verify stability

Use tools such as the Python requests library to loop through a static web page and record the return status code and time. If multiple requests fail or the request time is too long, it means that the proxy IP is unstable.

Through the above methods, we can prevent account association from obtaining and verifying proxy IPs, and filter out proxy IPs with higher quality and better stability. In actual applications, it is necessary to select appropriate proxy IP acquisition and verification methods according to specific needs.