OpenBSD

OpenBSD is an operating system built with one overriding priority: correctness and security. Its development team audits code relentlessly, enables security features by default, and takes a conservative approach to adding new functionality. The result is a system with a remarkable track record: very few remote vulnerabilities in the default install across decades of releases.

Where OpenBSD excels

OpenBSD is not a general-purpose server OS for every workload. It excels in specific, high-trust roles: firewalls, VPN gateways, DNS servers, mail relays, and any system where a security breach would be catastrophic. Its PF firewall is one of the cleanest and most powerful packet filters available, and tools like OpenSSH (used by virtually every Linux and Unix system) originated in the OpenBSD project.

Security by default

Where most operating systems require hardening after installation, OpenBSD ships secure out of the box. Address space layout randomisation, W^X memory protection, pledge and unveil system call restrictions: these are not optional add-ons but core features enabled from the start. For companies handling sensitive data or operating in regulated industries, this default posture is a significant advantage.

Our expertise

We help companies identify where OpenBSD fits into their infrastructure, typically at critical network boundaries and security-sensitive chokepoints. We advise on deployment, configuration, and integration with the rest of your stack, ensuring that OpenBSD’s strengths are applied where they matter most.