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软件名称: putty
发表日期: 2016-11-28
软件描述: PuTTY is a free implementation of SSH and Telnet for Windows and Unix platforms, along with an xterm terminal emulator. It is written and maintained primarily by Simon Tatham.
软件类型: 平台工具
资源下载: putty.zip   下载:请先登录
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软件详述:
 Introduction to PuTTY
--------------------------------

       PuTTY is a free SSH, Telnet and Rlogin client for 32-bit Windows
       systems.

   1. What are SSH, Telnet and Rlogin?

       If you already know what SSH, Telnet and Rlogin are, you can safely
       skip on to the next section.

       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. On the computer you sit at, you run a _client_, which makes a
       network connection to the other computer (the _server_). The network
       connection carries your keystrokes and commands from the client to
       the server, and carries the server's responses back to you.

       These protocols can also be used for other types of keyboard-based
       interactive session. In particular, there are a lot of bulletin
       boards, talker systems and MUDs (Multi-User Dungeons) which support
       access using Telnet. There are even a few that support SSH.

       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.

       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.

   2. How do SSH, Telnet and Rlogin differ?

       This list summarises some of the differences between SSH, Telnet and
       Rlogin.

        -  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.

       The Internet is a hostile environment and security is everybody's
       responsibility. If you are connecting across the open Internet,
       then we recommend you use SSH. If the server you want to connect
       to doesn't support SSH, it might be worth trying to persuade the
       administrator to install it.

       If your client and server are both behind the same (good) firewall,
       it is more likely to be safe to use Telnet or Rlogin, but we still
       recommend you use SSH.

(Reference to http://www.chiark.greenend.org.uk/~sgtatham/putty/

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