How to access Unix / Linux from Windows

We are here introducing a common tool yet a powerful one for accessing unix/linux systems from a windows operated system , and the App is called “Putty”.

To download , please click here : http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

What is putty  ?

PuTTY is a free SSH, Telnet and Rlogin client for 32-bit Windows systems.
SSH, Telnet and Rlogin are three ways of doing the same thing:
logging in to a multi-user computer from another computer, over a
network.

Multi-user operating systems, such as Unix and VMS, usually present
a command-line interface to the user, much like the Command Prompt’
or
MS-DOS Prompt’ in Windows. The system prints a prompt, and you
type commands which the system will obey.

Using this type of interface, there is no need for you to be sitting
at the same machine you are typing commands to. The commands,
and responses, can be sent over a network, so you can sit at one
computer and give commands to another one, or even to more than one.

SSH, Telnet and Rlogin are _network protocols_ that allow you to do
this.

Where is it helpful ?
You might want to use SSH, Telnet or Rlogin if:

– you have an account on a Unix or VMS system which you want to be
able to access from somewhere else

– your Internet Service Provider provides you with a login account
on a web server. (This might also be known as a _shell account_.
A _shell_ is the program that runs on the server and interprets
your commands for you.)

– you want to use a bulletin board system, talker or MUD which can
be accessed using Telnet.

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You probably do _not_ want to use SSH, Telnet or Rlogin if:

– you only use Windows. Windows computers have their own ways
of networking between themselves, and unless you are doing
something fairly unusual, you will not need to use any of these
remote login protocols.

How do SSH, Telnet and Rlogin differ?
–  SSH (which stands for `secure shell’) is a recently designed,
high-security protocol. It uses strong cryptography to protect
your connection against eavesdropping, hijacking and other
attacks. Telnet and Rlogin are both older protocols offering
minimal security.

–  SSH and Rlogin both allow you to log in to the server without
having to type a password. (Rlogin’s method of doing this is
insecure, and can allow an attacker to access your account on
the server. SSH’s method is much more secure, and typically
breaking the security requires the attacker to have gained
access to your actual client machine.)

–  SSH allows you to connect to the server and automatically send
a command, so that the server will run that command and then
disconnect. So you can use it in automated processing.

Screen Shots

1. Putty Interface

 

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