SSH or secure shell is one of the best way to secure your communication on the Internet, if you want to connect remote computer from public places like coffee shop, work place and even from your home. It is recommended to use a secure channel (encrypted) to establish the connection and for transferring the files (Data). The theory behind SSH has been discussed before and as we have shared the best SSH clients for windows operating system.
This article is a tutorial based article.
What Is OpenSSH
OpenSSH is a SSH client that provide end point security by using encryption techniques for the applications like Telnet,FTP and rLogin.
OpenSSH Tutorial
Normally OpenSSH used in Linux operating system however windows version of OpenSSH is also available and for this tutorial I will use Backtrack 5, you can use some other Linux distribution as well because we discuss each and everything from basic.
Backtrack 5 has OpenSSH client so for me there is no need to download OpenSSH and most of the Linux distribution has SSH client so for vary first step open the terminal and check that your SSH.
rootbt# ssh
If you will find the response like this, means you have SSH client on your OS.
Follow the tutorial from this point because you have SSH client, if you don't have OpenSSH client than leave this section and move to the installing section below.
Below is the simple command to connect a remote computer:
ssh user@remotemachine
The good practice is to use specific ports for this connection like:
ssh -p remoteport -D localport -f -C -q -N user@remotebo
Remoteport = Port for the remote SSH server , remember default port for SSH is 22 but you can use some other ports as well.
Localport = Port for the local SSH client (your computer).
Remotebox= IP address of the remote device
user= user is the username for the remote computer
-C = Enable encyrption
Install OpenSSH
There are many ways to install OpenSSH like you can get source file from the official website but for this tutorial on the terminal type:
pacman -S openssh
If you dont have a pacman in your box than you need to install it by using
apt-get install pacman
The SSH daemon can be find here /etc/ssh/sshd_config
Now for connection tutorial see above.
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