Steps to Build and Run the Telnet Script in Python
I’m using a Debian-based Linux operating system here to carry out the demonstration.
Step1:
Ensure that the telnet server is running in the host machine to which you are going to connect using the script. For simplicity, we are going to connect to localhost which is nothing but our own machine. You can check if a telnet server is running on your machine by typing the following command in the terminal:
telnet localhost
This command connects to the telnet server running at localhost. If you can manually connect to the server in this way, then your script will also be able to connect to it.
Step 2:
Create a new python file with any name of your choice with a ‘.py’ extension. The location of this file is also arbitrary. The command to do this is given below:
touch <file_name.py>
Step 3:
Now it’s time to insert our script into this file. You can use a text editor of your choice for this purpose. I’m using a mousepad here.
mousepad <file_name>
Telnet Automation / Scripting Using Python
Telnet is the short form of Teletype network, which is a client/server application that works based on the telnet protocol. Telnet service is associated with the well-known port number – 23. As Python supports socket programming, we can implement telnet services as well. In this article, we will learn how to automate telnet login and command execution using a simple Python script.