OpenBSD

Edit · View history

OpenBSD is a free, security-focused Unix-like operating system descended from BSD, forked from NetBSD in 1995 by Theo de Raadt. It is best known for its aggressive focus on code auditing, secure defaults, and producing widely-reused software like OpenSSH.

Philosophy

OpenBSD's project motto is 'Only two remote holes in the default install, in a heck of a long time!' The project performs continuous manual code auditing rather than relying purely on automated tools, and ships with secure-by-default configuration rather than requiring users to lock the system down themselves.

Notable spinoff software

• 0 -- now the de facto standard SSH implementation on nearly every Linux, macOS, and even Windows system
• 0 and 1 -- lightweight, security-audited networking daemons
• 0 -- a fork of OpenSSL created after the Heartbleed vulnerability