From owner-freebsd-questions@FreeBSD.ORG Sun Dec 4 07:45:01 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 56CC51065670 for ; Sun, 4 Dec 2011 07:45:01 +0000 (UTC) (envelope-from tundra@tundraware.com) Received: from ozzie.tundraware.com (ozzie.tundraware.com [75.145.138.73]) by mx1.freebsd.org (Postfix) with ESMTP id 1547E8FC15 for ; Sun, 4 Dec 2011 07:45:00 +0000 (UTC) Received: from [192.168.0.2] (viper.tundraware.com [192.168.0.2]) (authenticated bits=0) by ozzie.tundraware.com (8.14.5/8.14.5) with ESMTP id pB47irMZ002649 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO) for ; Sun, 4 Dec 2011 01:44:53 -0600 (CST) (envelope-from tundra@tundraware.com) Message-ID: <4EDB24F5.9010301@tundraware.com> Date: Sun, 04 Dec 2011 01:44:53 -0600 From: Tim Daneliuk User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.23) Gecko/20110922 Thunderbird/3.1.15 MIME-Version: 1.0 To: FreeBSD Mailing List References: <20111203120031.55D471065772@hub.freebsd.org> <20111204171900.N3548@sola.nimnet.asn.au> In-Reply-To: <20111204171900.N3548@sola.nimnet.asn.au> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7 (ozzie.tundraware.com [192.168.0.1]); Sun, 04 Dec 2011 01:44:53 -0600 (CST) X-TundraWare-MailScanner-Information: Please contact the ISP for more information X-TundraWare-MailScanner-ID: pB47irMZ002649 X-TundraWare-MailScanner: Found to be clean X-TundraWare-MailScanner-From: tundra@tundraware.com X-Spam-Status: No Subject: Re: ipfw And ping X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Dec 2011 07:45:01 -0000 On 12/04/2011 01:04 AM, Ian Smith wrote: > > For one, google 'icmp redirect attack' But isn't that handled by setting: net.inet.icmp.drop_redirect=1 > # This is the ICMP rule we generally use: > # ipfw add 10 allow icmp from any to any in icmptypes 0,3,4,11,12,14,16,18 Hmmm.... I just tried this and it seems to break ping...