From owner-freebsd-mobile@FreeBSD.ORG Wed Apr 14 10:23:01 2004 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9F5C116A4CE for ; Wed, 14 Apr 2004 10:23:01 -0700 (PDT) Received: from smtp800.mail.sc5.yahoo.com (smtp800.mail.sc5.yahoo.com [66.163.168.179]) by mx1.FreeBSD.org (Postfix) with SMTP id 786B943D58 for ; Wed, 14 Apr 2004 10:23:01 -0700 (PDT) (envelope-from fscked@pacbell.net) Received: from unknown (HELO pacbell.net) (fscked@pacbell.net@64.171.190.162 with plain) by smtp800.mail.sc5.yahoo.com with SMTP; 14 Apr 2004 17:23:00 -0000 Message-ID: <407D7323.50001@pacbell.net> Date: Wed, 14 Apr 2004 10:21:39 -0700 From: richard childers / kg6hac Organization: Daemonized Networking Services - http://www.daemonized.com User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-mobile@freebsd.org Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Subject: Hams Report 85-mile 802.11b File Transfers @ Oregon X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: fscked@pacbell.net List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Apr 2004 17:23:01 -0000 Those of you inclined towards worrying about eavesdroppers will find the following interesting ... QST Magazine (or was it NASA Tech Briefs?) recently reported that two people successfully achieved connectivity and exchanged files across a span of 85 miles, using COTS technology and antennas optimized for operation in the 2.4 gHz frequency. People operating 802.11b networks in corporate environments, take note - your networks can probably be monitored from anywhere within a few [dozen?] miles of the antenna, depending upon obstructions, and perhaps from over the horizon, as well. Regards, -- richard -- Richard Childers / Senior Engineer Daemonized Networking Services 945 Taraval Street, #105 San Francisco, CA 94116 USA [011.]1.415.759.5571 http://www.daemonized.com