From owner-freebsd-questions@freebsd.org Wed Feb 6 15:51:10 2019 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A5BA714D7697 for ; Wed, 6 Feb 2019 15:51:10 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from smtp.freebsd.org (smtp.freebsd.org [IPv6:2610:1c1:1:606c::24b:4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 687437281B for ; Wed, 6 Feb 2019 15:51:10 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from smtp.infracaninophile.co.uk (smtp.infracaninophile.co.uk [IPv6:2001:8b0:151:1:c4ea:bd49:619b:6cb3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "smtp.infracaninophile.co.uk", Issuer "Let's Encrypt Authority X3" (verified OK)) (Authenticated sender: matthew/mail) by smtp.freebsd.org (Postfix) with ESMTPSA id 3D249171FA for ; Wed, 6 Feb 2019 15:51:10 +0000 (UTC) (envelope-from matthew@FreeBSD.org) Received: from leaf.local (unknown [88.212.184.97]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: m.seaman@infracaninophile.co.uk) by smtp.infracaninophile.co.uk (Postfix) with ESMTPSA id 9BA511A416 for ; Wed, 6 Feb 2019 15:51:07 +0000 (UTC) Authentication-Results: smtp.infracaninophile.co.uk/9BA511A416; dkim=none; dkim-atps=neutral Subject: Re: pf filter settings To: freebsd-questions@freebsd.org References: <08dc977729b0176043c84e504df84f95.squirrel@webmail.harte-lyne.ca> From: Matthew Seaman Message-ID: <87405f06-72cf-4990-4299-e24ce647a713@FreeBSD.org> Date: Wed, 6 Feb 2019 15:50:52 +0000 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 In-Reply-To: <08dc977729b0176043c84e504df84f95.squirrel@webmail.harte-lyne.ca> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 687437281B X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.96 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.96)[-0.958,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Feb 2019 15:51:10 -0000 On 06/02/2019 14:48, James B. Byrne via freebsd-questions wrote: > What is going on? Why is the rule 'block drop in log all' have > effect and the rule > > pass log quick on $int_if \ > from { self $int_if:network } \ > to { self $int_if:network } > > does not, despite the quick option and the fact that it occurs first. Because pf always applies the *last* matching rule. It's the opposite way round to ipfw(8). In general, you want to order your pf ruleset from the most general to the most specific. You can short-circuit searching the whole ruleset by using the 'quick' modifier -- use this on early and more general rules to weed out the obviously wrong traffic. Also, read the docco on: set skip on { $int_if } which should achieve what you you want (assuming that you're only logging traffic on that i/f as a debugging thing.) Cheers, Matthew