From owner-freebsd-ipfw Wed Jul 17 10:21:24 2002 Delivered-To: freebsd-ipfw@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5ECCA37B401 for ; Wed, 17 Jul 2002 10:21:22 -0700 (PDT) Received: from iguana.icir.org (iguana.icir.org [192.150.187.36]) by mx1.FreeBSD.org (Postfix) with ESMTP id 10A9E43E4A for ; Wed, 17 Jul 2002 10:21:22 -0700 (PDT) (envelope-from rizzo@iguana.icir.org) Received: (from rizzo@localhost) by iguana.icir.org (8.11.6/8.11.3) id g6HHLJL13178; Wed, 17 Jul 2002 10:21:19 -0700 (PDT) (envelope-from rizzo) Date: Wed, 17 Jul 2002 10:21:19 -0700 From: Luigi Rizzo To: cjclark@alum.mit.edu Cc: ipfw@FreeBSD.ORG Subject: Re: Ouch! ipfw log and DoS Message-ID: <20020717102119.A12639@iguana.icir.org> References: <20020716124059.A2635@iguana.icir.org> <20020717064647.GC22967@blossom.cjclark.org> <20020717022619.A8351@iguana.icir.org> <20020717165807.GA25404@blossom.cjclark.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20020717165807.GA25404@blossom.cjclark.org>; from crist.clark@attbi.com on Wed, Jul 17, 2002 at 09:58:08AM -0700 Sender: owner-freebsd-ipfw@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wed, Jul 17, 2002 at 09:58:08AM -0700, Crist J. Clark wrote: ... > I just really do not think that this is the right place for such a > limit. I don't like the idea that the firewall code just starts > dropping notifications without way to know about it. Think about what > happens for your example, a packet comes in that gets logged which > triggers a syslog cascade until we hit the limit. What we end up with > is only logging a small windows separated by at least a second, and > the logs are still almost entirely filled with the syslog feedback. the alternative being having your box hung until you hard-reset it, i know what i would choose :) cheers luigi To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ipfw" in the body of the message