OpenSSH
OpenSSH
8.1

5.0

OpenSSH free download for Mac

OpenSSH

8.1
09 October 2019

SSH protocol connectivity tools.

Overview

OpenSSH is a free version of the SSH connectivity tools that technical users of the Internet rely on. Users of telnet, rlogin, and ftp may not realize that their password is transmitted across the Internet unencrypted, but it is. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks. Additionally, OpenSSH provides secure tunneling capabilities and several authentication methods, and supports all SSH protocol versions.

Note: While the software is classified as free, it is actually donationware. Please consider making a donation to help support development.

What's new in OpenSSH

Version 8.1:
Security:
  • ssh(1), sshd(8), ssh-add(1), ssh-keygen(1): an exploitable integer overflow bug was found in the private key parsing code for the XMSS key type. This key type is still experimental and support for it is not compiled by default. No user-facing autoconf option exists in portable OpenSSH to enable it. This bug was found by Adam Zabrocki and reported via SecuriTeam's SSD program.
  • ssh(1), sshd(8), ssh-agent(1): add protection for private keys at rest in RAM against speculation and memory side-channel attacks like Spectre, Meltdown and Rambleed. This release encrypts private keys when they are not in use with a symmetric key that is derived from a relatively large "prekey" consisting of random data (currently 16KB).
Potentially-incompatible changes:
  • ssh-keygen(1): when acting as a CA and signing certificates with an RSA key, default to using the rsa-sha2-512 signature algorithm. Certificates signed by RSA keys will therefore be incompatible with OpenSSH versions prior to 7.2 unless the default is overridden (using "ssh-keygen -t ssh-rsa -s ...").

5 OpenSSH Reviews

Rate this app:

Mac2048
19 November 2006

Most helpful

I can't install OpenSSH 4.5 because it looks like the Makefile has a syntax error on line 3. It doesn't seem to like ".include" but it's happy with simply "include" without the dot. If I make that change then it gets a similar syntax error down in /usr/share/mk/bsd.own.mk (due to ".if" vs. "if"). I don't want to touch that file. The original error is: Makefile:3: *** missing separator. Stop. MacOS 10.2.8 (old, I know, which is why I want to upgrade ssh), /usr/bin/make is GNU Make version 3.79 Has anybody run into this?
Like (1)
Version 4.5
outer
22 April 2012
Does this coëxist with or overwrite Apple's implementation? If it overwrites, how can I know whether it will mess up other parts of my Apple-provided infrastructure?
Like (1)
Version 6.0
1 answer(s)
SickTeddyBear
SickTeddyBear
26 April 2012
The more important question is, why do you want to install it? Unless you understand fully the implications of installing this, just leave it alone. OpenSSH is already built-in to OS X, so just use that. Here are some GUI options: http://www.openssh.com/macos.html
Like (1)
Mac2048
19 November 2006
I can't install OpenSSH 4.5 because it looks like the Makefile has a syntax error on line 3. It doesn't seem to like ".include" but it's happy with simply "include" without the dot. If I make that change then it gets a similar syntax error down in /usr/share/mk/bsd.own.mk (due to ".if" vs. "if"). I don't want to touch that file. The original error is: Makefile:3: *** missing separator. Stop. MacOS 10.2.8 (old, I know, which is why I want to upgrade ssh), /usr/bin/make is GNU Make version 3.79 Has anybody run into this?
Like (1)
Version 4.5
2 answer(s)
resuna
resuna
31 March 2008
That means the Makefile is for BSD make, not GNU make. A configure script is possibly misidentifying the OS.
Like
Version 4.9
resuna
resuna
31 March 2008
OK, make it with "bsdmake" not "make".
Like
Version 4.9
Anonymous
28 July 2001
Download is unusable when clicked. "File does not appear to be compressed or encoded. Obtain further information about the contents of this file from the sender or provider of the file." Thanks a lot. Me, bitter? Disappointed? An utter waste of download time!
Like
Version 2.5.2
Anonymous
28 March 2001
err. ok. so it worked flawlessly today. whatever. It works like it should
Like
Version 2.5.2
Anonymous
26 March 2001
unfortunately, wouldn't let the installation complete..and yes I did go through the whole process of typing in the admin password, trying three times, etc it also reset some of my preferences in the process. &^%$@^%!
Like
Version 2.5.2
Free

5.0

App requirements: 
  • Intel 64
  • Intel 32
  • PPC 64
  • PPC 32
  • Mac OS X 10.1.5 or later
Developer Website: 
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