From owner-freebsd-net@FreeBSD.ORG Wed Feb 8 22:06:02 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 74A5B1065674 for ; Wed, 8 Feb 2012 22:06:02 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout030.mac.com (asmtpout030.mac.com [17.148.16.105]) by mx1.freebsd.org (Postfix) with ESMTP id 5B4F68FC1F for ; Wed, 8 Feb 2012 22:06:02 +0000 (UTC) MIME-version: 1.0 Content-type: text/plain; charset=koi8-r Received: from cswiger1.apple.com (unknown [17.209.4.71]) by asmtp030.mac.com (Oracle Communications Messaging Server 7u4-23.01 (7.0.4.23.0) 64bit (built Aug 10 2011)) with ESMTPSA id <0LZ300MU8HDEVD80@asmtp030.mac.com> for freebsd-net@freebsd.org; Wed, 08 Feb 2012 14:05:39 -0800 (PST) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.6.7361,1.0.260,0.0.0000 definitions=2012-02-08_08:2012-02-08, 2012-02-08, 1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=6.0.2-1012030000 definitions=main-1202080239 From: Chuck Swiger X-Priority: 3 (Normal) In-reply-to: <15210117711.20120208235307@yandex.ru> Date: Wed, 08 Feb 2012 14:05:38 -0800 Content-transfer-encoding: quoted-printable Message-id: <2BF9EFDB-C52E-4842-9754-66357AD3EBA5@mac.com> References: <15210117711.20120208235307@yandex.ru> To: =?utf-8?B?0JrQvtC90YzQutC+0LIg0JXQstCz0LXQvdC40Lk=?= X-Mailer: Apple Mail (2.1084) Cc: freebsd-net@freebsd.org Subject: Re: security issue!! X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Feb 2012 22:06:02 -0000 On Feb 8, 2012, at 1:53 PM, =EB=CF=CE=D8=CB=CF=D7 =E5=D7=C7=C5=CE=C9=CA = wrote: > some host on LAN can send packets to MAC address of FreeBSD server >=20 > and server accept packets even if frame is not in its subnet and pass = them further %-) >=20 > details here > http://www.freebsd.org/cgi/query-pr.cgi?pr=3D164914 Um, what were you expecting to have happen? It's not that unusual for someone to setup a bridge or VPN/proxy-arp = configuration where an interface doesn't have an IP, but still receives = and forwards (or otherwise processes) the traffic which it sees, because = the traffic is addressed to the MAC address of that interface.... Regards, --=20 -Chuck