PuTTY explained

PuTTY
Developer:Simon Tatham
Released:[1]
Operating System:Microsoft Windows, ReactOS, macOS, Linux
Programming Language:C
Genre:Terminal emulator
License:MIT License[2]

PuTTY [3] is a free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, and raw socket connection. It can also connect to a serial port. The name "PuTTY" has no official meaning.[4]

PuTTY was originally written for Microsoft Windows, but it has been ported to various other operating systems. Official ports are available for some Unix-like platforms, with work-in-progress ports to and, and unofficial ports have been contributed to platforms such as Symbian,[5] [6] Windows Mobile and Windows Phone.

PuTTY was written and is maintained primarily by Simon Tatham, a British programmer.

Features

PuTTY supports many variations on the secure remote terminal, and provides user control over the SSH encryption key and protocol version, alternate ciphers such as AES, 3DES, RC4, Blowfish, DES, and public-key authentication. PuTTY uses its own format of key files – PPK (protected by Message Authentication Code).[7] PuTTY supports SSO through GSSAPI, including user provided GSSAPI DLLs. It also can emulate control sequences from xterm, VT220, VT102 or ECMA-48 terminal emulation, and allows local, remote, or dynamic port forwarding with SSH (including X11 forwarding). The network communication layer supports IPv6, and the SSH protocol supports the zlib@openssh.com delayed compression scheme. It can also be used with local serial port connections.

PuTTY comes bundled with command-line SCP and SFTP clients, called "pscp" and "psftp" respectively, and plink, a command-line connection tool, used for non-interactive sessions.[8]

PuTTY does not support session tabs directly,[9] but many wrappers are available that do.[10]

History

PuTTY development began late in 1998,[1] and was a usable SSH-2 client by October 2000.[11] [12]

Components

PuTTY consists of several components:

PuTTY: the Telnet, rlogin, and SSH client itself, which can also connect to a serial port
  • PSCP: an SCP client, i.e. command-line secure file copy. Can also use SFTP to perform transfers
  • PSFTP: an SFTP client, i.e. general file transfer sessions much like FTP
  • PuTTYtel: a Telnet-only client
  • Plink: a command-line interface to the PuTTY back ends. Usually used for SSH Tunneling
  • Pageant: an SSH authentication agent for PuTTY, PSCP and Plink
  • PuTTYgen: an RSA, DSA, ECDSA and EdDSA key generation utility
  • pterm: (Unix version only) an X11 client which supports the same terminal emulation as PuTTY

    • See also

    Notes and References

    1. Web site: git.tartarus.org Git - simon/putty.git/commit. git.tartarus.org. 31 August 2017. 21 September 2021. https://web.archive.org/web/20210921140141/https://git.tartarus.org/?p=simon%2Fputty.git%3Ba%3Dcommit%3Bh%3Dc74130d423fd83a65c51b7634e3c34aaf557ae68. dead.
    2. Web site: PuTTY Licence. 2021-03-08.
    3. Web site: PuTTY FAQ. www.chiark.greenend.org.uk.
    4. Web site: [PuTTY is] the name of a popular SSH and Telnet client. Any other meaning is in the eye of the beholder. It's been rumoured that ‘PuTTY’ is the antonym of ‘getty’, or that it's the stuff that makes your Windows useful, or that it's a kind of plutonium Teletype. We couldn't possibly comment on such allegations. . PuTTY FAQ .
    5. Web site: PuTTY for Symbian OS. s2putty.sourceforge.net.
    6. Web site: Forum Nokia Wiki – PuTTY for Symbian OS. https://archive.today/20120716084848/http://wiki.forum.nokia.com/index.php/PuTTY_for_symbian_OS. 2012-07-16.
    7. News: SSH and Transfer Files using Putty Private Key (.ppk). D4Nyll . 21 June 2016 . https://web.archive.org/web/20210518105614/http://blog.danyll.com/ssh-and-transfer-files-using-putty-private-key-ppk/. 2021-05-18.
    8. Book: SSH, The Secure Shell: The Definitive Guide. Barrett. Daniel. Silverman. Richard. Byrnes. Robert. O'Reilly Media. 9780596008956. 2005. 577–579.
    9. Web site: PuTTY wish multiple-connections. www.chiark.greenend.org.uk.
    10. (e.g. SuperPuTTY, MTPuTTY, mRemoteNG, WinSSHTerm, PuTTY Manager, PuttyTabs or TWSC (Terminal Window ShortCuts)).
    11. Web site: PuTTY FAQ. www.chiark.greenend.org.uk.
    12. Web site: PuTTY Change Log. www.chiark.greenend.org.uk.

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