The Secure Shell Daemon (sshd) is a server program that accepts secure remote logins via the Secure Shell protocol.
aptitude install openssh-server
I recommend that you disable password logins in
/etc/sshd/sshd_config. Work with RSA keys instead.
It is also a good idea to shift the
ssh server away from the standard port 22 if the sshd faces the internet. That reduces the number of script attacks and keeps your logs cleaner.
If you want to automatically start the
sshd then do the following.
update-rc.d ssh defaults
rc-update add ssh default