Absolute OpenBSD: UNIX for the Practical Paranoid The definitive guide to OpenBSD Foreword by Henning Brauer, OpenBSD PF Developer OpenBSD, the elegant, highly secure Unix-like operating system, is widely used as the basis for critical DNS servers, routers, firewalls, and more. This long-awaited second edition of Absolute OpenBSD maintains author Michael Lucas"s trademark straightforward and practical approach that readers have enjoyed for years... Full description