SSH is the Secure SHell protocol. For those of you familiar with telnet or rsh, it's very similar except that all traffic between the two endpoints is encrypted. SSH will also allow you to do port forwarding (more about this on the next slide).

Let's Play

ssh username@remote_machine; ls -lh;
ssh username@remote_machine "fdisk -l /dev/hda"
scp username@remote_machine:/etc/hosts hosts.remote
sftp username@remote_machine