Python develops network idle port scanning tool

How to develop a network idle port scanning tool through Python

Overview:
A network port is an interface in a computer system used to communicate with external devices or applications. Port scanning can help us determine which ports are open in the system and find network vulnerabilities in the system. Python is a simple and powerful programming language that we can use to develop our own network idle port scanning tool. This article will introduce how to use Python to develop a network idle port scanning tool.

Steps:

1. Import the necessary modules
   First, we need to import some necessary Python modules. Use the socket module to communicate with the target host and the argparse module to parse command line arguments.
2. Create an argument parser
   Use the argparse module to create a parser to receive specified arguments from the command line. We can use the argparse module to easily parse command line input.
3. Scan the specified host and port range
   Using the socket module, we can connect to the target host by creating a socket object and try to connect to the specific port of that host . We can use a for loop to iterate through all ports to be scanned.
4. Establish a connection and check the port status
   Use the socket module's connect_ex() method to establish a connection with the target host. If the return value is 0, it means that the connection is successfully established and the port is open. If the return value is not 0, the connection failed and the port may be closed.
5. Result output and error handling
   Depending on the success or failure of the connection, we can output the results to the screen or write them to the log file. We can also add appropriate error handling so that exceptions that may occur are caught and details about the error are provided.
6. Create main function
   Create a main function for calling previously defined functions and methods. We can pass command line arguments to the main function and perform the corresponding operations there.
7. Run the script
   Save the complete code as a Python script and run the script in the command line, passing the required parameters. The program will automatically perform the scan and output the results.

Summary:
Developing a network idle port scanning tool through Python is a very useful skill. It helps us find vulnerabilities in our network and take appropriate security measures. This article provides some simple steps to help beginners understand how to use Python to develop their own network idle port scanning tool. Through continuous learning and practice, we can improve our programming skills and create more powerful and flexible tools to meet our needs. I wish you all success in developing a network idle port scanning tool using Python!

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