From owner-freebsd-questions@freebsd.org Sun Apr 4 09:27:28 2021 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 382A65D11A2 for ; Sun, 4 Apr 2021 09:27:28 +0000 (UTC) (envelope-from guru@unixarea.de) Received: from ms-10.1blu.de (ms-10.1blu.de [178.254.4.101]) (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 4FCpNH45Cyz4hKT for ; Sun, 4 Apr 2021 09:27:27 +0000 (UTC) (envelope-from guru@unixarea.de) Received: from [188.174.53.62] (helo=c720-r368166.unixarea.de) by ms-10.1blu.de with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lSz2U-0001YA-7n for freebsd-questions@freebsd.org; Sun, 04 Apr 2021 11:27:26 +0200 Received: from c720-r368166.fritz.box (localhost [127.0.0.1]) by c720-r368166.unixarea.de (8.16.1/8.14.9) with ESMTPS id 1349ROmr009215 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO) for ; Sun, 4 Apr 2021 11:27:24 +0200 (CEST) (envelope-from guru@unixarea.de) Received: (from guru@localhost) by c720-r368166.fritz.box (8.16.1/8.14.9/Submit) id 1349ROAP009214 for freebsd-questions@freebsd.org; Sun, 4 Apr 2021 11:27:24 +0200 (CEST) (envelope-from guru@unixarea.de) X-Authentication-Warning: c720-r368166.fritz.box: guru set sender to guru@unixarea.de using -f Date: Sun, 4 Apr 2021 11:27:24 +0200 From: Matthias Apitz To: freebsd-questions@freebsd.org Subject: Re: Access points and liability - Was : Wifi scanner for FreeBSD Message-ID: Reply-To: Matthias Apitz Mail-Followup-To: freebsd-questions@freebsd.org References: <20210404110731.191095cb@archlinux> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20210404110731.191095cb@archlinux> X-Operating-System: FreeBSD 13.0-CURRENT r368166 (amd64) X-message-flag: Mails containing HTML will not be read! Please send only plain text. X-Con-Id: 51246 X-Con-U: 0-guru X-Originating-IP: 188.174.53.62 X-Rspamd-Queue-Id: 4FCpNH45Cyz4hKT X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of guru@unixarea.de has no SPF policy when checking 178.254.4.101) smtp.mailfrom=guru@unixarea.de X-Spamd-Result: default: False [-2.20 / 15.00]; HAS_REPLYTO(0.00)[guru@unixarea.de]; RCVD_VIA_SMTP_AUTH(0.00)[]; HAS_XOIP(0.00)[]; HAS_XAW(0.00)[]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; NEURAL_HAM_SHORT(-1.00)[-1.000]; RECEIVED_SPAMHAUS_PBL(0.00)[188.174.53.62:received]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; ASN(0.00)[asn:42730, ipnet:178.254.0.0/19, country:DE]; MIME_TRACE(0.00)[0:+]; RCVD_IN_DNSWL_LOW(-0.10)[178.254.4.101:from]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; REPLYTO_EQ_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; AUTH_NA(1.00)[]; RCPT_COUNT_ONE(0.00)[1]; DMARC_NA(0.00)[unixarea.de]; R_SPF_NA(0.00)[no SPF record]; RWL_MAILSPIKE_VERYGOOD(0.00)[178.254.4.101:from]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[freebsd-questions] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Apr 2021 09:27:28 -0000 El día domingo, abril 04, 2021 a las 11:07:31a. m. +0200, Ralf Mardorf escribió: > Hi, > > I can't answer the question, but I've got a question myself, so I > opened a new thread. > > On Sun, 4 Apr 2021 10:23:24 +0200, Matthias Apitz wrote: > >"tarara" is my AP in my house in about 900 meter distance. > > Isn't it risky to chose that much transmitting capacity? > > I'm not aware of any open access point with such a transmitting > capacity. Don't you worry liability, if somebody does misuse your > access point? Even if it's not an open access point, there's more > than enough software available to access "non-open" access points. > > I set the transmitting capacity of my wifi to it's lowest level, see > screenshot selection. Offered are 100%, 50%, 25%, 12% and 6%. I would > be surprised to see it in about a 9 meter distance. > The AP is a normal AVM Fritz!Box 7430 and sometimes I have problems with it in my own garden when the signal has to pass through three walls of normal 24cm bricks. I was really surprised to see my AP in this distance. Read the full story here about this and how far Wifi can reach under good conditions. In this case the AP was in direct line visible at this long distance and the signal was passing only through a normal window pane. https://forums.ubports.com/topic/5865/wifi-bq-e4-5-avm-fritz-box-7430-900-meter?_=1617525309372 So don't be surprised if you can't see your AP in about 9m distance, but others in 90m :-) matthias -- Matthias Apitz, ✉ guru@unixarea.de, http://www.unixarea.de/ +49-176-38902045 Public GnuPG key: http://www.unixarea.de/key.pub ¡Con Cuba no te metas! «» Don't mess with Cuba! «» Leg Dich nicht mit Kuba an! http://www.cubadebate.cu/noticias/2020/12/25/en-video-con-cuba-no-te-metas/