Install libnet-telnet-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libnet-telnet-perl
Perl module to script telnetable connections
Net::Telnet allows you to make client connections to a TCP port and do network I/O, especially to a port using the TELNET protocol. Simple I/O methods such as print, get, and getline are provided. More sophisticated interactive features are provided because connecting to a TELNET port ultimately means communicating with a program designed for human interaction. These interactive features include the ability to specify a timeout and to wait for patterns to appear in the input stream, such as the prompt from a shell.