From owner-freebsd-security Sun Jul 30 15:53:16 2000 Delivered-To: freebsd-security@freebsd.org Received: from jade.chc-chimes.com (jade.chc-chimes.com [216.28.46.6]) by hub.freebsd.org (Postfix) with ESMTP id 0F8B637B52E for ; Sun, 30 Jul 2000 15:53:10 -0700 (PDT) (envelope-from billf@jade.chc-chimes.com) Received: by jade.chc-chimes.com (Postfix, from userid 1001) id 870241C65; Sun, 30 Jul 2000 18:53:09 -0400 (EDT) Date: Sun, 30 Jul 2000 18:53:09 -0400 From: Bill Fumerola To: stephen@math.missouri.edu Cc: "Jonathan M. Bresler" , freebsd-security@FreeBSD.ORG Subject: Re: log with dynamic firewall rules Message-ID: <20000730185309.W5021@jade.chc-chimes.com> References: <20000730194202.447F937B6C1@hub.freebsd.org> <3984AB32.53B8D793@math.missouri.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: <3984AB32.53B8D793@math.missouri.edu>; from stephen@math.missouri.edu on Sun, Jul 30, 2000 at 05:24:50PM -0500 X-Operating-System: FreeBSD 3.3-STABLE i386 Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Sun, Jul 30, 2000 at 05:24:50PM -0500, stephen@math.missouri.edu wrote: > Actually, I'm becoming dissatisfied with the concept of dynamic > rules using ipfw. I have gone back to static rules. I am only > a home computer, and I don't need anything complicated. If I > ever need dynamic rules, I will learn ipfilter and see how that > does. I fear the dynamic rule code, or I'd attempt to figure it all out and come up with something better, but: > Now wait five minutes and the dynamic rule times out, and it stops > working. Well, that is OK I suppose - you shouldn't have left it so long. [boa.internal-billf 18:52:25] < /home/billf > sysctl -a |grep dyn net.inet.ip.fw.dyn_buckets: 256 net.inet.ip.fw.curr_dyn_buckets: 256 net.inet.ip.fw.dyn_count: 0 net.inet.ip.fw.dyn_max: 1000 net.inet.ip.fw.dyn_ack_lifetime: 300 net.inet.ip.fw.dyn_syn_lifetime: 20 net.inet.ip.fw.dyn_fin_lifetime: 20 net.inet.ip.fw.dyn_rst_lifetime: 5 ... it is a controllable behavior. -- Bill Fumerola - Network Architect, BOFH / Chimes, Inc. billf@chimesnet.com / billf@FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message