sshd

It is the server program run on the server machine. It listens for connections from client machines, and whenever it receives a connection, it performs authentication and starts serving the client.

ssh server need to be installed before use:

chaos:# sshd
/etc/sshd_config: No such file or directory
error: fatal: Could not load host key: /etc/ssh_host_key.  Check path and permissions.

In a networked environment with shared binary directory, it is enough to do "make install" on one machine, and then "make hostinstall" on others to generate host keys and install configuration files.

chaos:/shared/installs/ssh-1.2.27# make hostinstall
chaos:/shared/installs/ssh-1.2.27# sshd

— Ok, after server install