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Date:      Fri, 27 Dec 2019 21:49:41 +0100
From:      Franco Fichtner <franco@lastsummer.de>
To:        Kristof Provost <kristof@sigsegv.be>
Cc:        =?utf-8?Q?=C3=96zkan_KIRIK?= <ozkan.kirik@gmail.com>, freebsd-pf@freebsd.org
Subject:   Re: Rule last match timestamp
Message-ID:  <8547AD1F-2D76-449E-90DE-DC0D699D9631@lastsummer.de>
In-Reply-To: <2C151498-F878-40A3-8A7C-C9C7D36CDBFF@sigsegv.be>
References:  <CAAcX-AGFg04rD=4_rJino_CvMiU4f3a%2BvxhiLwV=-x2ikWfO_w@mail.gmail.com> <2C151498-F878-40A3-8A7C-C9C7D36CDBFF@sigsegv.be>

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Hi,

> On 27. Dec 2019, at 6:45 PM, Kristof Provost <kristof@sigsegv.be> wrote:
> 
> What are you trying to accomplish?

Some people believe that "last match" is a great metric to audit rules for
intrusion detection and all sorts ruleset optimisation and refinement.

In OPNsense the question has popped up a few times to support it, but without
doing it in pf(4) directly it makes little sense as you'd have to crawl pflog
output and even then you can't crawl non-log rules this way...


Cheers,
Franco



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