SSH Server

An SSH server is a software program which uses the secure shell protocol to accept connections from remote computers. SFTP/SCP file transfers and remote terminal connections are popular use cases for an SSH server. This article compares a selection of popular servers (en.wikipedia).

Installing SSH.
in the terminal as root type:
apt-get install ssh -y

Use PuTTY application.
PuTTY is a free implementation of Telnet and SSH for Windows and Unix platforms, along with an xterm terminal emulator.

In the computer/laptop Windows client, download and run "putty.exe"
Fill in Host Name (or IP address) with IP Address of eth1, and default Port is 22.

Clik Open.

Then in security alert click Yes.

Fill in login as: root
and password : [root password]

Now we connect with server.

 DONE.