SSH client and daemon: Introduction
SSH client application allows you to logging in a remote computer, or execute commands remotely.
It is also able to execute graphical applications, and to forward TCP ports from and to local and remote machines.
SSH establishes a securely encrypted communication between local and remote hosts along an insecure network.
For SSH client to work it needs to connect to a SSH server in the remote computer.
INSTALL SSH AND SSHD
SSH program binaries are:
ssh — OpenSSH SSH client (remote login program)
sshd — OpenSSH SSH daemon
In Debian or Ubuntu:
$ sudo aptitude install openssh-client # installs ssh client$ sudo aptitude install openssh-server # installs sshd daemon