Projects / Portable OpenSSH

Portable OpenSSH

Portable OpenSSH is a Unix/Linux port of OpenBSD's excellent OpenSSH, a full implementation of the SSH1 and SSH2 protocols. It includes sftp client and server support.

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Recent releases

  •  31 Jan 2014 10:15

    Release Notes: This is a feature-focused release. New features include new ciphers and key types, a new private key format, and rejection of connection requests from old insecure clients. There are also a number of bug fixes.

    •  06 Sep 2011 05:38

      Release Notes: This release added experimental sandboxing of network-facing code during the pre-authentication phase and SHA2-based HMAC modes for the SSH transport. sshd now sends logs from the privilege-separated process via a pipe, eliminating the need for /var/empty/dev/log. There were many more bugfixes and changes.

      •  24 Jan 2011 01:44

        Release Notes: ECC support for kex exchange and public key authentication, SFTP hard link support, improved QoS/DSCP support, bandwidth limiting for SFTP, and more.

        •  08 Mar 2010 05:09

          Release Notes: This is a major feature and bugfix release. Major changes include disabling SSH protocol 1 by default, removal of legacy OpenSC/libsectok smartcard support, addition of PKCS#11 support, introduction of a new certificate authentication method for users and hosts, revised session multiplexing code, many improvements to sftp from the Google Summer of Code 2009, and lots of bugfixes.

          •  22 Jul 2008 07:37

            Release Notes: Many bugs were fixed. Performance and features were improved.

            Recent comments

            25 Jun 2003 14:55 jrjohns3

            Security Blanket
            This is one of the most important apps on my machine. I don't know why everyone doesn't use it. I fear telnet....

            Regards,

            jake@plutoid.com (http://www.plutoid.com)
            http://www.plutoid.com (http://www.plutoid.com)

            06 Dec 2001 07:41 LosD

            Re: file format of DSA keys

            > Hmmm... Looking at the manpage, neither
            > -d or -x exists...
            >
            >


            Hmmm.... But they still work...


            06 Dec 2001 07:33 LosD

            Re: file format of DSA keys
            Hmmm... Looking at the manpage, neither -d or -x exists...

            28 Feb 2001 09:52 mossc

            Re: file format of DSA keys

            > OpenSSH uses PEM format for DSA key
            > files which is incompatible with the
            > SSH2 key file format. So far I couldn't
            > get OpenSSH to authenticate with a DSA
            > key to an ssh2 server because of this.
            > I can't put the public key generated
            > with OpenSSH on the ssh2 server and I
            > can't get OpenSSH to use a private key
            > generated with ssh-keygen2.
            >


            From my notes here is how I was able to do it:

            On the client

            1. upgrade the openssh to 2.2.x+

            2. ssh-keygen -d -f $HOME/.ssh/id_dsa

            3. cd $HOME/.ssh

            4. ssh-keygen -x -f $HOME/.ssh/id_dsa > ssh2.pub

            On fsecure server

            5. copy ssh2.pub to $HOME/.ssh2/ssh2.pub

            6. echo "Key ssh2.pub" > authorization

            11 May 2000 15:06 orentirosh

            file format of DSA keys
            OpenSSH uses PEM format for DSA key files which is incompatible with the SSH2 key file format. So far I couldn't get OpenSSH to authenticate with a DSA key to an ssh2 server because of this. I can't put the public key generated with OpenSSH on the ssh2 server and I can't get OpenSSH to use a private key generated with ssh-keygen2.

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