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→Managing Services
== INVESTIGATION 2: Configuring SSH ==
The default (and often the only way) to administer a Linux server is via SSH. Even if you work in a graphical Linux environment, it is very useful to open a terminal and use SSH to monitor and manage your VMs (you can resize the terminal window). Using SSH to connect to remote servers on a network helps to protect your Linux machine from being penetrated. You will can also generate a private and public encryption key for the root user, and copy that public key from your host to your VMs in order to allow certain backup programs to run via a scheduling daemon (called cron) without having to be required to enter the password for the remote machine. You will be doing those operations later in this lab.
=== Managing Services ===
The SSH server should already be installed and running in your VMs. If it's not installed - you can install '''openssh-server''' using yum.
It is essential for CNS/CTY students to become comfortable managing services since you will need to constantly stop services, change their configuration, and start them for the configuration changes to take effect in nearly every topic this semester, and for other courses involving Linux network management.
