From owner-freebsd-questions Thu Apr 8 12:29:20 1999 Delivered-To: freebsd-questions@freebsd.org Received: from resnet.uoregon.edu (resnet.uoregon.edu [128.223.144.32]) by hub.freebsd.org (Postfix) with ESMTP id B96C614BE3 for ; Thu, 8 Apr 1999 12:29:17 -0700 (PDT) (envelope-from dwhite@resnet.uoregon.edu) Received: from localhost (dwhite@localhost) by resnet.uoregon.edu (8.8.8/8.8.8) with ESMTP id MAA28335; Thu, 8 Apr 1999 12:22:15 -0700 (PDT) (envelope-from dwhite@resnet.uoregon.edu) Date: Thu, 8 Apr 1999 12:22:14 -0700 (PDT) From: Doug White To: Huang Min Cc: questions@FreeBSD.ORG Subject: Re: Promiscuous mode? In-Reply-To: <370C27D0.3E66BEAB@public.cta.cq.cn> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 8 Apr 1999, Huang Min wrote: > hi, everybody, > > What's Promiscuous mode? Promiscuous (sp?) mode is a special mode of an Ethernet card to receive all frames on the network instead of just those addressed to it's own Ethernet address or the broadcast address. > Would it make any security problems? It's mainly used for traffic sniffers. Programs like tcpdump and trafshow will put the interface in promiscious mode so they can do their job. If you don't knw where this came from, be worried about just who has root access to your box. Doug White Internet: dwhite@resnet.uoregon.edu | FreeBSD: The Power to Serve http://gladstone.uoregon.edu/~dwhite | www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message