What is a proxy server?

Proxy servers allow users to protect their privacy by hiding their real IP address when browsing the Internet. Usually, users can get another IP address through a proxy server to realize anonymous access. Free proxy servers, on the other hand, are proxy servers that can be used for free.

How to get the proxy server ip and port list?

There are various ways to get the proxy server ip and port list, mainly including:

• Browser Plugins: Some browser plugins can provide a list of ip and ports for free proxy servers, such as Proxy SwitchyOmega.
• Free websites: Some websites specialize in providing free proxy server ip and port lists, and users can get the latest proxy information directly from the website.
• Web forums and communities: Some technical forums and communities where users share free proxy server ip and ports can be used to get the latest proxy information from these platforms.

How to use free proxy server ip and port?

Generally speaking, users can manually add free proxy server ip and port in their own network settings, or through some proxy software. Here is a simple example:

var http = require('http');

var options = { host: 'proxy server ip', port: 'port', path: 'http://www.example.com' };

http.get(options, function(resp){ resp.on('data', function(chunk){ console.log('Response: ' + chunk); }); }).on("error", function(e){ console .log("Got error: " + e.message); });

With the above code example, users can access the website and get response data using free proxy server ip and port in Node.js environment.

Of course, there are some risks involved in using free proxy server ip and ports, and some free proxy servers may be unstable or have security risks. Therefore, when using a free proxy server, it is recommended to choose a reputable provider or website to avoid personal information leakage or network security issues.