Date: Thu, 09 Sep 1999 21:32:40 +0200 From: sthaug@nethelp.no To: imp@village.org Cc: jwyatt@rwsystems.net, Goran.Lowkrantz@infologigruppen.se, freebsd-security@FreeBSD.ORG Subject: Re: Lisen only NIC Message-ID: <13779.936905560@verdi.nethelp.no> In-Reply-To: Your message of "Thu, 09 Sep 1999 13:22:43 -0600" References: <199909091922.NAA30860@harmony.village.org>
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> I've seen in other discussions that while you could do this with the > AUI based ethernet cards, you can't do this with 10base2 or 10base-t > cards. Thinnet is obvious... But the 10-base-t/100-base-t cards need > the xmit lines to negotiate speed settings with the hub. Can anybody > confirm this? Not just for the negotiation, but also to keep the link up. There are link pulses sent at regular intervals. If these are not received, the link is detected as being down. It's possible to "cheat" on this with some active electronics. Anzen makes a "receive only" cable, see http://www.anzen.com/afj/afj_faq.html#anchor157338 Disclaimer: I have no particular knowledge of the Anzen product, aside from having seen a discussion about this on the NFR distribution list. 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
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