If not installed already, you can install the OpenSSH server through Synaptic by adding the
openssh-server package. As you might have guessed,
sshd is the name for the SSH server daemon.
Two different versions of SSH exist, SSH1 and SSH2. The latter is newer and more secure, comes with more features, and is the default in Ubuntu. Support for SSH1 clients is best left disabled so that older clients cannot connect. This is done by default in the
/etc/ssh/sshd_config file on this line:
If you have no other option and absolutely have ...