From owner-freebsd-bluetooth@freebsd.org Sun Jul 9 01:00:50 2017 Return-Path: Delivered-To: freebsd-bluetooth@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7917FDA6518 for ; Sun, 9 Jul 2017 01:00:50 +0000 (UTC) (envelope-from mi+thun@aldan.algebra.com) Received: from smtp.rcn.com (smtp.rcn.com [69.168.97.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4291F71CF2 for ; Sun, 9 Jul 2017 01:00:49 +0000 (UTC) (envelope-from mi+thun@aldan.algebra.com) X_CMAE_Category: , , X-CNFS-Analysis: v=2.2 cv=F/IVTepN c=1 sm=1 tr=0 a=lGUdY1O6J9NpztYPi32J9g==:117 a=lGUdY1O6J9NpztYPi32J9g==:17 a=r77TgQKjGQsHNAKrUKIA:9 a=SzuQoHA45RtUQ4yO7IMA:9 a=QEXdDO2ut3YA:10 a=tHCCYrL8khaODnbRAGAA:9 a=_W_S_7VecoQA:10 X-CM-Score: 0 X-Scanned-by: Cloudmark Authority Engine X-Authed-Username: YW5hdEByY24uY29t Authentication-Results: smtp01.rcn.cmh.synacor.com smtp.mail=mi+thun@aldan.algebra.com; spf=neutral; sender-id=neutral Authentication-Results: smtp01.rcn.cmh.synacor.com header.from=mi+thun@aldan.algebra.com; sender-id=neutral Authentication-Results: smtp01.rcn.cmh.synacor.com smtp.user=anat; auth=pass (PLAIN) Received-SPF: neutral (smtp01.rcn.cmh.synacor.com: 108.53.87.28 is neither permitted nor denied by domain of aldan.algebra.com) Received: from [108.53.87.28] ([108.53.87.28:58711] helo=aldan.narawntapu) by smtp.rcn.com (envelope-from ) (ecelerity 3.6.23.54417 r(Core:3.6.23.0)) with ESMTPSA (cipher=DHE-RSA-AES128-SHA) id 38/98-26624-E3081695; Sat, 08 Jul 2017 21:00:46 -0400 To: "freebsd-bluetooth@freebsd.org" From: "Mikhail T." Subject: How to listen quietly for other Bluetooth devices? Message-ID: <085c77b2-9f40-5a1f-0b49-86a24e561fce@aldan.algebra.com> Date: Sat, 8 Jul 2017 21:00:46 -0400 MIME-Version: 1.0 Content-Language: en-US Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-bluetooth@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Using Bluetooth in FreeBSD environments List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 09 Jul 2017 01:00:50 -0000 Hello! I'd like my FreeBSD computer to detect the presence of other Bluetooth-devices nearby. I have a little USB-dongle plugged into it, which is recognized as ubt0. I started "hcidump -a" while turning Bluetooth on the iPhone next to the dongle on and trying to link to a pair of BT-headphones. The "hcidump" didn't print any traffic even though, of course, the phone did try to radio out. How can the detection be made to work? Note, I don't want to decode any communications between BT-devices. I just want to detect their presence and what information about them, that's not encrypted... Thanks! Yours, -mi