Analysis of proxy server search and Verification

I. Common server ports
Each host (Hosts) on the Internet has a unique IP address, but the same host may provide more than one service at the same time, for example, for FTP service and WWW Service, each service occupies a PORT of the host ).

Common ports on the proxy server include:

HTTP Proxy: 80/8080/3128/8081/9080

SOCKS Proxy: 1080

FTP Proxy: 21

Telnet proxy: 23

2. How to search for proxy servers
From the above content, we know that finding a Proxy server is actually to find out the server's IP address, service type, and port used. We can use the "Proxy Hunter" software to search.
Briefly introduces how to use the Agent Hunter:

1. Start the proxy Hunter and enter the starting address and ending address in the "IP address range" in the upper-left corner. For example, if you want to find the proxy server in the IP address segment 210.62.0.0 --> 210.63.0.0, enter 210.62.0.0 in the left column, enter 10.63.0.0 in the right column. Click the [add address] button, and the address segment will be added to the search task.

2. Select the port range. The proxy hunter supports searching for HTTP proxy and SOCKS proxy. You can add frequently used ports of the two proxies listed above. Add method: Enter "8080" in the first blank column of "port range", enter "8080" in the second column, select "HTTP" for the type, and click the [add Port] button, you will find "8080 | 8080 | HTTP" in the port list ". Add the following ports as follows: "80 | 80 | HTTP", "3128 | 3128 | HTTP", "8081 | 8081 | HTTP", "9080 | 9080 | HTTP", "1080 | 1080 | SOCKS ".

3. Click the [parameter settings] button and change "connection timeout" of {search verification settings} to 6, "Verification timeout" to 30, and "concurrent connection count" to 100; change "connection timeout time" of {verification settings} to 45, and "Verification timeout time" to 90. If these values are too small, the proxy address cannot be found completely. If the value is too large, it will waste time = money. Return after confirmation.

4. Click the [start search] button. The proxy server is displayed in the list at the bottom left, free proxy servers are available only when the verification status is displayed as "Free x seconds.

Iii. How to verify the Proxy Server
The proxy server can be said to be not very stable. Some of them were used well yesterday and cannot be used today, or they need a password. To find out whether the proxy is still Free, we need to use the "Agent Hunter" verification function. There are eight buttons at the bottom right of the Agent Hunter. The first one is "test" and the second is "test all". We can press [test all] to verify whether all agents in the list can be used, you can also select one or more proxy addresses in the list and click [verify] to verify that only these proxies are usable. After the verification is complete, click "Verify Status" in the title of the List to arrange the available proxy servers in front of the list for easy search.

4. How to export and import results
In the text file of the volume (use the proxy hunter version 3.0 to note that at least the "type" under "Content Setting" should be selected during export and exported together ), then pass the file to your friends. After obtaining this file, your friend can use the [import result] button to introduce these addresses to his "Agent Hunter" list (Use Agent Hunter 3.0 to note that, when using the import results, when the select file dialog box is displayed, You must select the "avoid repeated import items" at the bottom to avoid duplicate addresses in the list ).

If you find the proxy address posted by a netizen on the internet, how can you import the address to "Agent Hunter? The method is as follows:

1. Open a text editor (for example, a Windows notepad ).

2. Enter an address in the format of "Address: Port @ Type". Each address occupies one row. Note: ":" and "@" are both English Punctuation Marks, and Chinese Punctuation Marks cannot be used. If the type is @ HTTP, it can be omitted as "Address: Port" instead of "@ HTTP. For example:

210.77.125.90: 1080 @ SOCKS5
210.62.225.8: 3128
200.77.125.146: 21 @ FTP
61.173.65.126: 3128
211.78.26.35: 80
132.162.17.194: 21 @ FTP
202.104.141.130: 80
218.63.120.31: 8080
61.78.60.10: 1080 @ SOCKS5

3. Save the file by any name, such as proxy.txt.

4. Start the Agent Hunter, select "Export Import result", find the Newly Edited proxy.txt file, and import it (remember to select "avoid repeated import items ").

5. Select the import result and click [test]. It is clear if it can be used.

5. Tips
When you search for a proxy server, the Entered IP address range is very important. Generally, when you set up a proxy server to a large number of economically developed regions, you can find the IP addresses of each province and city in China, then perform targeted search.