The Cygwin DLL currently works with all recent, commercially released x86_64 versions of Windows, starting with Windows Vista. For more information see the FAQ.

1. SSH tunneling is a method of transporting arbitrary networking data over an encrypted SSH connection. It can be used to add encryption to legacy applications. It can also be used to implement VPNs (Virtual Private Networks) and access intranet services across firewalls.
2. Web Based SSH Client with SFTP, VNC, RDP and more. Access your cloud servers from anywhere without installing anything. All you need is a browser. Sign Up For Free More Details. Install a docker version of Shellngn in your private cloud and use it as a secured gateway to your servers.

Cygwin version

The most recent version of the Cygwin DLL is 3.2.0.

Installing Cygwin

Install Cygwin by running setup-x86_64.exe

Use the setup program to perform a fresh install or to update an existing installation.

Keep in mind that individual packages in the distribution are updated separately from the DLL so the Cygwin DLL version is not useful as a general Cygwin distribution release number.

SSH: More than secure shell. SSH is a protocol for secure encrypted remote shell sessions over an unsecured network such as the Internet. Common SSH use cases include: Tunnel traffic to access a network service that is blocked or not supported and; Hide the.

Support for Cygwin

For all Cygwin-related questions and observations, please check the resources available at this site, such as the FAQ, the User's Guide and the mailing list archives. If you've exhausted these resources then please send email to an appropriate mailing list. This includes observations about web pages, setup questions, questions about where to find things, questions about why things are done a certain way, questions about the color preferences of Cygwin developers, questions about the meaning of the number 42, etc.

Please send notification of technical problems (bad html, broken links) concerning these web pages to the Cygwin mailing list.

Please do not send personal email with 'quick questions' to individual Cygwin contributors. The Cygwin mailing lists are the places for all questions. Really. I mean it.

32 bit Cygwin

Address space is a very limiting factor for Cygwin. These days, a full 32 bit Cygwin distro is not feasible anymore, and will in all likelihood fail in random places due to an issue with the fork(2) system call.

Therefore we recommend using 32 bit Cygwin only in limited scenarios, with only a minimum of necessary packages installed, and only if there's no way to run 64 bit Cygwin instead.

You have been warned. If you're still sure you really need a 32 bit Cygwin, and there's absolutely no way around it, you may run the setup-x86.exe installer.

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PuTTY is a free implementation of SSH and Telnet for Windows and Unixplatforms, along with an xterm terminal emulator. It iswritten and maintained primarily bySimon Tatham.

The latest version is 0.74.Download it here.

LEGAL WARNING:Use of PuTTY, PSCP, PSFTP and Plink is illegal in countries whereencryption is outlawed. We believe it is legal to use PuTTY, PSCP,PSFTP and Plink in England and Wales and in many other countries, butwe are not lawyers, and so if in doubt you should seek legal advicebefore downloading it. You may find useful information atcryptolaw.org, which collectsinformation on cryptography laws in many countries, but wecan't vouch for its correctness.

Use of the Telnet-only binary (PuTTYtel) is unrestricted by anycryptography laws.

Latest news

2021-04-18 Pre-releases of 0.75 now available

We're working towards a 0.75 release. Pre-release builds are available, and we'd appreciate people testingthem and reporting any issues.

0.75 will be a feature release. The biggest changes all relate toPageant and/or SSH public keys. User-visible behaviour changes include:

• Pageant now allows you to load a key without decrypting it, inwhich case it will wait until you first use it to ask for thepassphrase.
• We've switched to the modern OpenSSH-style SHA-256 style of keyfingerprint.

Back-end changes that affect compatibility:

• We've added support for the rsa-sha2-256 andrsa-sha2-512 signature methods, which some servers nowrequire in order to use RSA keys.
• We've introduced a new version of the PPK format for private keyfiles, to remove weak crypto and improve password-guessingresistance.
• We've introduced a new method for applications to talk to Pageanton Windows, based on the same named-pipe system used by connectionsharing instead of window messages.

2020-11-22 Primary git branch renamed

The primary branch in the PuTTY git repository is now called main,instead of git's default of master. For now, both branch namescontinue to exist, and are kept automatically in sync by a symbolic-ref on theserver. In a few months' time, the alias master will be withdrawn.

To update a normal downstream clone or checkout to use the new branch name, youcan run commands such as ‘git branch -m master main’ followed by‘git branch -u origin/main main’.

2020-06-27 PuTTY 0.74 released

PuTTY 0.74, released today, is a bug-fix and security release. Itfixes bugs in 0.73, including one possible vulnerability, and alsoadds anew configuration optionto mitigate a minor information leak in SSH host key policy.

Ssh Online Login

2019-09-29 PuTTY 0.73 released

PuTTY 0.73, released today, is a bug-fix release. It fixes a small number of bugs since 0.72, and a couple of them have potential security implications.

2019-07-20 PuTTY 0.72 released

PuTTY 0.72, released today, is a bug-fix release. It fixes a smallnumber of further security issues found by the 2019 EU-fundedHackerOne bug bounty, and a variety of other bugs introduced in 0.71.

2019-07-08 Bug bounty concluded

The EU-funded bug bounty programme is now closed. Many thanks toeverybody who sent in reports!

Anyone with a vulnerability to report should now go back to reportingit in the old way, via email to the PuTTY team, as described on theFeedback page.If you think it needs to be reported confidentially, encrypt it withour Secure Contact Key.

2019-03-25 Bug bounty continues

Online Telnet Client

This year's EU-funded bug bounty programme is stillrunning. It was originally scheduled to end on 7th March, butthere was money left over in the budget. So while that money lasts,you still have a chance to earn some by finding vulnerabilities inPuTTY 0.71 or the development snapshots!

As before, vulnerabilities should be reported through theHackerOne web sitein order to qualify for a bounty: if you send reports directly to thePuTTY team in the usual way, then we'll still fix them, but we can'tprovide money for them.

2019-03-16 PuTTY 0.71 released

PuTTY 0.71, released today, includes a large number of security fixes,many of which were found by the recent EU-funded HackerOne bug bounty.There are also other security enhancements (side-channel resistance),and a few new features.It's also the first release to be built for Windows on Arm.

2019-01-18 EU bug bounty for finding vulnerabilities in PuTTY

From now until 7th March, you can earn money by reporting securityvulnerabilities in PuTTY!

HackerOne is running a bugbounty programme for PuTTY, funded by the European Union as partof the ‘Free and Open Source Software Audit’ project(EU-FOSSA 2). If you report a vulnerability through their web site, itmay qualify for a bounty. (The exact amount will depend on how seriousthe problem is, and there's also a bonus for providing a patch thatfixes it.)

For more details, or if you have something to report, see the linkabove.

(Please note that HackerOne will only consider vulnerabilitiesreported to them. If you send a report directly to the PuTTYteam in the usual way, then of course we'll still fix it, but we can'talso arrange for you to get paid.)

2018-08-25 GPG key rollover

This week we've generated a fresh set of GPG keys for signing PuTTYrelease and snapshot builds. We will begin signing snapshots with thenew snapshot key, and future releases with the new release key. Thenew master key is signed with the old master keys, of course. Seethe keys page for more information.

2017-07-08 PuTTY 0.70 released, containing security and bug fixes

PuTTY 0.70, released today, fixes further problems with Windows DLLhijacking, and also fixes a small number of bugs in 0.69, includingbroken printing support and Unicode keyboard input on Windows.

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Site map

• Licence conditions under which you mayuse PuTTY.
• The FAQ.
• The documentation.
• Download PuTTY:
  • latest release 0.74
  • pre-releases of 0.75
  
  
• Subscribe to the PuTTY-announcemailing list to be notified of new releases.
• Feedback and bug reporting: contactaddress and guidelines. Please read the guidelines beforesending us mail; we get a very large amount of mail and it will helpus answer you more quickly.
• Changes in recent releases.
• Wish list and list of known bugs.
• Links to related software andspecifications elsewhere.
• A page about the PuTTY team members.

Access Ssh Online

If you want to comment on this web site, see theFeedback page.

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(last modified on Sun Apr 18 09:19:51 2021)