From owner-freebsd-security Thu Sep 9 8:12:40 1999 Delivered-To: freebsd-security@freebsd.org Received: from verdi.nethelp.no (verdi.nethelp.no [158.36.41.162]) by hub.freebsd.org (Postfix) with SMTP id 6F4ED15CB8 for ; Thu, 9 Sep 1999 08:12:17 -0700 (PDT) (envelope-from sthaug@nethelp.no) Received: (qmail 4514 invoked by uid 1001); 9 Sep 1999 15:11:55 +0000 (GMT) To: Goran.Lowkrantz@infologigruppen.se Cc: rbezuide@oskar.nanoteq.co.za, avalon@coombs.anu.edu.au, newton@atdot.dotat.org, freebsd-security@FreeBSD.ORG Subject: RE: Lisen only NIC From: sthaug@nethelp.no In-Reply-To: Your message of "Thu, 9 Sep 1999 16:48:40 +0200 " References: X-Mailer: Mew version 1.05+ on Emacs 19.34.2 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Date: Thu, 09 Sep 1999 17:11:55 +0200 Message-ID: <4512.936889915@verdi.nethelp.no> Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > Couldn't this work if this NIC with the no-TX cable was using the same IP > address as another, active computer on the same segment? No. There are "link pulses" sent on this cable at regular intervals. If you cut the cable, link down is detected. If you want a "receive only" TP cable, you need some electronics. There are companies that make these, see for instance http://www.anzen.com/afj/afj_faq.html#anchor157338 Steinar Haug, Nethelp consulting, sthaug@nethelp.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message