Telnet is a free and open-source remote management protocol for Linux and Windows systems. It is used to check the remote server port connectivity from the client system. Telnet is also used to troubleshoot and test the system services that define the remote computing environment. Telnet is a client-server protocol that runs on port 23. Telnet can perform several helpful tasks for Linux and Windows administrators.
In this post, we will show you how to install and use Telnet in Debian 11.