From owner-freebsd-net Thu Dec 30 4:16: 5 1999 Delivered-To: freebsd-net@freebsd.org Received: from d12lmsgate-3.de.ibm.com (d12lmsgate-3.de.ibm.com [195.212.91.201]) by hub.freebsd.org (Postfix) with ESMTP id 14D9815252 for ; Thu, 30 Dec 1999 04:15:57 -0800 (PST) (envelope-from DRHAGER@de.ibm.com) Received: from d12relay01.de.ibm.com (d12relay01.de.ibm.com [9.165.215.22]) by d12lmsgate-3.de.ibm.com (1.0.0) with ESMTP id NAA105090; Thu, 30 Dec 1999 13:15:48 +0100 From: DRHAGER@de.ibm.com Received: from d12mta01.de.ibm.com (d12mta01_cs0 [9.165.222.237]) by d12relay01.de.ibm.com (8.8.8m2/NCO v2.06) with SMTP id NAA13550; Thu, 30 Dec 1999 13:15:43 +0100 Received: by d12mta01.de.ibm.com(Lotus SMTP MTA v4.6.5 (863.2 5-20-1999)) id C1256857.004355DF ; Thu, 30 Dec 1999 13:15:28 +0100 X-Lotus-FromDomain: IBMDE To: Fernando Ariel Gont Cc: freebsd-net@FreeBSD.ORG Message-ID: Date: Thu, 30 Dec 1999 13:15:18 +0100 Subject: Re: ARP makes a LAN "vulnerable"? Mime-Version: 1.0 Content-type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org So what? You can always see all the traffic on your segment. Try tcpdump, snoop, iptrace..... If you have two identical adresses on the MAC -Layer, you will run in a real problem, so such a thing will be noticed on the net. Try it on a segment you control, its fun and quite a good execise in network-troubleshooting. Orm To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message