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.
| Tags | Security Cryptography Utilities |
|---|---|
| Licenses | BSD Revised BSD Original |
Recent releases


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.


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.


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.


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


Release Notes: Execution of ~/.ssh/rc was disabled for sessions where a command has been forced by the sshd_config ForceCommand directive (unsafe default behavior). Chroot support for sshd was added. Internal sftp-server support was added to sshd, to allow chroot operation without support files. A "no-user-rc" option was added to ~/.ssh/authorized_keys to disable execution of ~/.ssh/rc in public key authentication. An sftp protocol extension, "posix-rename@openssh.com", was added to provide a rename operation with POSIX semantics.
Recent comments
25 Jun 2003 14:55
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 (www.plutoid.com)
www.plutoid.com (www.plutoid.com)
06 Dec 2001 07:41
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
Re: file format of DSA keys
Hmmm... Looking at the manpage, neither -d or -x exists...
28 Feb 2001 09:52
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
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.