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(operating system)
A version of BSD Unix with an emphasis on security. A lot of security work that is ported to other free operating systems originates with OpenBSD and a lot of code review is done here.

Sub-projects of OpenBSD include implementations of SSH, ntpd, and CVS, to be called OpenCVS.

OpenBSD Home.
This article is provided by FOLDOC - Free Online Dictionary of Computing (


(Berkeley Software Distribution) The software distribution facility of the Computer Systems Research Group (CSRG) of the University of California at Berkeley. CSRG helped develop the TCP/IP protocols for DARPA and the ARPAnet and released them in the early 1980s along with the Unix source code from AT&T. BSD charged for the media, and a license from AT&T was required for use. Throughout the 1980s, this operating system release from BSD was known as "BSD Unix."

Bill Joy ran the group until 1982 when he co-founded Sun Microsystems, bringing 4.2BSD with him as the foundation of SunOS. The last BSD version released by BSD was 4.4BSD.

Many Offshoots
In the 1990s, the AT&T kernel was removed from the BSD release, and several different groups developed new kernels to replace the AT&T code.

BSD/386 and BSD/OS
In 1991, former CSRG members founded Berkeley Software Design, Inc., Colorado Springs, CO, and released BSD/386 for the Intel platform. A decade later, Wind River Systems ( acquired BSDI's software assets and turned the OS into its BSD/OS Internet Server product.

FreeBSD, NetBSD and OpenBSD
Out of all open source BSD operating systems, FreeBSD ( is the most widely used. It runs on Intel and Alpha platforms and is known for its ease of use. NetBSD ( runs on the greatest number of platforms, and OpenBSD ( is the most security-oriented. OpenBSD evolved from NetBSD and also runs on a variety of hardware. A long-established BSD support site can be found at
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References in periodicals archive ?
Other examples such as the BSD variants (like FreeBSD and OpenBSD) exist, but Linux and its various distributions stand out.
The identification rules of the operating systems presented in this paper cover the mainstream operating systems such as Windows, Mac OS, OpenBSD, and Ubuntu.
"During our initial research, we discovered ourselves that Android, Linux, Apple, Windows, OpenBSD, MediaTek, Linksys, and others, are all affected by some variant of the attacks," he noted on the website.
OpenBSD ftpd 6.4, with vulnerabilities dating back to 2001.
With data centre locations in Geneva and near Zurich, Exoscale offers VMs running Ubuntu, Windows, CoreOS, OpenBSD and other operating systems.
For starters, LibreOffice 5.1 is available for Windows, Mac OS X, Linux, FreeBSD, NetBSD and OpenBSD, all with the same codebase, whereas MS Office is available for Windows and Mac OS X, that too with different codebases that lead to compatibility issues, along with factors like the OS X MS Office version not having MS Access.
[23] The OpenBSD Project, openNTPD,
Provos, "Cryptography in OpenBSD: An Overview," In USENIX Annual Technical Conference, FREENIX Track.
RAT not only affects Windows PCs, but also Linux, Mac OSX, FreeBSD, OpenBSD,