openssh-server is used for remote access of another PC in ubuntu. it is just like a teamweaver software which is used in Windows for remote access. But through openssh-server, we can access another PC, only through its terminal, can’t access GUI as we do with teamweaver software.
// Installation of openssh-server(server steps)
$ sudo apt-get openssh-server (if you want to provide service as a server to client)
$ sudo service ssh start
$ sudo service ssh restart
// client steps
client does not have a need to install openssh-client because by default each pc is a client.just type following command on terminal to access server.
$ ssh hostname@server-IP
Now client can remotely access its server for service.