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Yes, the Book of PF, Fourth Edition Is Coming Soon

On my way back from EuroBSDCon 2023 in Coimbra, where these questions had of course come up again, even from the quite small group of attendees at our session, I decided I that after eight years it might be worth at least looking into what, if anything beyond incrementing version numbers, would make sense to do to produce a new edition. And as you could reasonably expect, the world around us had changed enough that in addition to introducing some new features, existing examples and the way we present the issues to the reader needed a refresh in order to be relevant to anyone working in or starting out with modern TCP/IP networks. But when the go-ahead came, I asked Henning Brauer, who had been very much involved with technical editing for the previous versions, and Kristof Provost, who does the major PF things on the FreeBSD side, to be my tech reviewers.

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