You have the client (and, I believe, also the server) installed. But you're not running the server on your machine (it's not started by default on Crux).
sshd to the
SERVICES setting in
/etc/rc.conf. See the handbook. This will take care of starting the SSH server at boot time. For now, run
As per the FAQ, you may want to customize
/etc/hosts.deny first. Note that these files offer hostname-based protection, which is not always trivial to circumvent but far from absolute nonetheless. Ssh itself provides good protection against intruders (as long as you don't enable passwords, or make sure every user has a high-entropy password), so I recommend allowing SSH access to all (
sshd: ALL in