FOREWORD
OpenBSD's PF packet filter has enjoyed a lot of success and attention since it was first released in OpenBSD 3.0 in late 2001. While you'll find out more about PF's history in this book, in a nutshell, PF happened because it was needed by the developers and users of OpenBSD. Since the original release, PF has evolved greatly and has become the most powerful free tool available for firewalling, load balancing, and traffic managing. When PF is combined with CARP and pfsync, PF lets system administrators not only protect their services from attack, but it makes those services more reliable by allowing for redundancy and it makes them faster by scaling them using pools of servers managed through PF and hoststated.
While I have been involved ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access