From owner-freebsd-questions@FreeBSD.ORG  Wed Jan 21 12:19:46 2004
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 2546B16A4CE
	for <freebsd-questions@freebsd.org>;
	Wed, 21 Jan 2004 12:19:46 -0800 (PST)
Received: from corb.mc.mpls.visi.com (corb.mc.mpls.visi.com [208.42.156.1])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 1446E43D46
	for <freebsd-questions@freebsd.org>;
	Wed, 21 Jan 2004 12:19:17 -0800 (PST)	(envelope-from veldy@veldy.net)
Received: from veldy.net (fuggle.veldy.net [209.98.200.33])
	by corb.mc.mpls.visi.com (Postfix) with ESMTP
	id 8CF288394; Wed, 21 Jan 2004 14:19:16 -0600 (CST)
Received: from localhost (localhost.veldy.net [127.0.0.1])
	by veldy.net (Postfix) with ESMTP
	id 2A87B1CC61; Wed, 21 Jan 2004 14:19:16 -0600 (CST)
Received: from veldy.net ([127.0.0.1])
 by localhost (fuggle.veldy.net [127.0.0.1]) (amavisd-new, port 10024)
 with ESMTP id 49839-02; Wed, 21 Jan 2004 14:19:14 -0600 (CST)
Received: from 4K3500B (localhost.veldy.net [127.0.0.1])
	by veldy.net (Postfix) with SMTP
	id 93F5E1CC6A; Wed, 21 Jan 2004 14:19:13 -0600 (CST)
Message-ID: <009601c3e05b$d67148a0$d037630a@nic.target.com>
From: "Thomas T. Veldhouse" <veldy@veldy.net>
To: "Dinesh Nair" <dinesh@alphaque.com>,
	"Adam Seniuk" <adams@techweavers.net>
References: <20040122035407.K532-100000@prophet.alphaque.com>
Date: Wed, 21 Jan 2004 14:19:13 -0600
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2800.1106
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106
X-Virus-Scanned: by amavisd-new at veldy.net
cc: freebsd-questions@freebsd.org
Subject: Re: IPFW and Dynamic Rules
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>,
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 21 Jan 2004 20:19:46 -0000

Dinesh Nair wrote:

> seems like you're hitting this limit with too many keep-state rules in
> your ipfw ruleset. try trimming them down a little, by adding in
> specific reverse packet flow rules.
>

It does not take many at all to hit the limit.  This is what I used to use
[in /etc/sysctl.conf] on a webserver with great success:

# increase the number of dynamic firewall rules allowed
net.inet.ip.fw.dyn_max=3000

Tom Veldhouse