To turn on the Telnet service on a Linux or FreeBSD system, you can follow these steps:
sudo apt update sudo apt install telnetd
On a Red Hat-based system, you can use the "yum" command to install the Telnet service:
sudo yum update sudo yum install telnet-server
On a FreeBSD system, you can install the Telnet service by using the "pkg" command:
sudo pkg update sudo pkg install telnetd
Consult the documentation of your operating system for more information on how to install the Telnet service.
sudo systemctl enable telnetd
On a Linux system that uses the SysVinit init system, you can use the "chkconfig" command to enable the Telnet service:
sudo chkconfig telnetd on
On a FreeBSD system, you can enable the Telnet service by adding it to the list of services that are started at boot time in the "/etc/rc.conf" file:
sudo sh -c "echo 'telnetd_enable=\"YES\"' >> /etc/rc.conf"
Consult the documentation of your operating system for more information on how to enable and manage services.
sudo systemctl start telnetd
On a FreeBSD system, you can start the Telnet service by using the "service" command:
sudo service telnetd start
Consult the documentation of your operating system for more information on how to start and stop services.
With these steps, you should be able to turn on the Telnet service on a Linux or FreeBSD system. Keep in mind that Telnet is an insecure protocol that transmits data, including passwords, in clear text, and it is generally not recommended for use. It is recommended to use a secure shell (SSH) connection instead, and to follow best practices for securing your server and protecting your user accounts. Consult the documentation of your operating system and Telnet for more information on how to use and secure Telnet connections.