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Date:      Sun, 5 Feb 2012 13:16:35 -0500
From:      Eitan Adler <lists@eitanadler.com>
To:        Bill Tillman <btillman99@yahoo.com>
Cc:        "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>
Subject:   Re: HowTo easy use IPFW
Message-ID:  <CAF6rxgnni93wChmZME-_4DxaCiBt%2BdsvyVd3h2V1L=xpS=%2BZog@mail.gmail.com>
In-Reply-To: <1328443513.34131.YahooMailNeo@web36505.mail.mud.yahoo.com>
References:  <67410574.20120202113314@yandex.ru> <4F2E274F.6000601@freebsd.org> <4F2E2C97.7000400@freebsd.org> <1328443513.34131.YahooMailNeo@web36505.mail.mud.yahoo.com>

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On Sun, Feb 5, 2012 at 7:05 AM, Bill Tillman <btillman99@yahoo.com> wrote:
> The only truly safe firewall ruleset consists of one rule and that is:
>
> =C2=A0deny all from any to any

This ruleset is potentially a denial of service attack if the system
is intended to do certain useful things. You can't talk about "only
truly safe firewall ruleset" without also talking about your threat
model (and intended functionality).

--=20
Eitan Adler



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