Debian daemon control
In RedHat distributions like RHEL, Fedora and also CentOS you have a tool called ntsysv to manage daemons and their runlevels. In Debian there is an alternative tool that lets you determine what daemon you want to run using a text GUI
sysv-rc-conf
It makes it easy to manage which daemons you would like to run like telnet, ssh etc.
If the tool isn’t installed, install it by running the command
apt-get install sysv-rc-conf