Book Review: Book of PF, 3rd Edition

No Starch Press was kind enough to send me a review copy of the new 3rd edition of Peter Hansteen’s Book of PF. The first two editions are the standard reference work on the OpenBSD packet filter, and this is a topic I’ve written about in some depth before, so I’m fully prepared to eviscerate Hansteen if he screwed up.

Third edition, huh? So how does this stack up?

Let’s get the obvious out of the way. All three editions have yellow covers, but the first edition had blue trim; the second editio...