From owner-freebsd-security Fri Jan 21 8: 9: 2 2000 Delivered-To: freebsd-security@freebsd.org Received: from ns1.via-net-works.net.ar (ns1.via-net-works.net.ar [200.10.100.10]) by hub.freebsd.org (Postfix) with ESMTP id A3A7E1523D for ; Fri, 21 Jan 2000 08:08:59 -0800 (PST) (envelope-from fpscha@ns1.via-net-works.net.ar) Received: (from fpscha@localhost) by ns1.via-net-works.net.ar (8.9.3/8.9.3) id NAA24882; Fri, 21 Jan 2000 13:08:46 -0300 (GMT) From: Fernando Schapachnik Message-Id: <200001211608.NAA24882@ns1.via-net-works.net.ar> Subject: Re: bugtraq posts: stream.c - new FreeBSD exploit? In-Reply-To: <200001211408.BAA12379@cairo.anu.edu.au> from Darren Reed at "Jan 22, 0 01:08:45 am" To: avalon@coombs.anu.edu.au (Darren Reed) Date: Fri, 21 Jan 2000 13:08:46 -0300 (GMT) Cc: fpscha@via-net-works.net.ar, freebsd-security@FreeBSD.ORG Reply-To: Fernando Schapachnik X-Mailer: ELM [version 2.4ME+ PL40 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org En un mensaje anterior, Darren Reed escribió: > In some mail from Fernando Schapachnik, sie said: > > > > En un mensaje anterior, Darren Reed escribió: > > > btw, I think the better way to write the 3 rules is: > > > > > > block in quick proto tcp from any to any head 100 > > > pass in quick proto tcp from any to any flags S keep state group 100 > > > pass in all > > > > I usually work with ipfw, so I'm a newbie with ipfilter. > > > > I loaded a 3.3-R with an ipfilter enabled kernel. > > > > Then ipf -l block -f /file_with_rules > > > > Suprisingly: > [...] > > That's to be expected. It only lets through `new' connections. > You may (or may not) want to reboot. I see the same if I try to start a new connection after turning ipfilter on. Does it keeps record of inside initated connection or I have to do something else? TIA! Fernando P. Schapachnik Administración de la red VIA NET.WORKS ARGENTINA S.A. fernando@via-net-works.net.ar (54-11) 4323-3333 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message