From owner-freebsd-questions@FreeBSD.ORG Sat Mar 21 13:16:57 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 742C0106566B for ; Sat, 21 Mar 2009 13:16:57 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from mx02.qsc.de (mx02.qsc.de [213.148.130.14]) by mx1.freebsd.org (Postfix) with ESMTP id 0889F8FC16 for ; Sat, 21 Mar 2009 13:16:56 +0000 (UTC) (envelope-from freebsd@edvax.de) Received: from r55.edvax.de (port-92-196-37-253.dynamic.qsc.de [92.196.37.253]) by mx02.qsc.de (Postfix) with ESMTP id 6F6E116C004E; Sat, 21 Mar 2009 14:16:55 +0100 (CET) Received: from r55.edvax.de (localhost [127.0.0.1]) by r55.edvax.de (8.14.2/8.14.2) with SMTP id n2LDGndZ007816; Sat, 21 Mar 2009 14:16:49 +0100 (CET) (envelope-from freebsd@edvax.de) Date: Sat, 21 Mar 2009 14:16:48 +0100 From: Polytropon To: Modulok Message-Id: <20090321141648.49c453af.freebsd@edvax.de> In-Reply-To: <64c038660903210543v1cebe63fr4424bebc58076e4a@mail.gmail.com> References: <64c038660903210543v1cebe63fr4424bebc58076e4a@mail.gmail.com> Organization: EDVAX X-Mailer: Sylpheed 2.4.7 (GTK+ 2.12.1; i386-portbld-freebsd7.0) Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-questions@freebsd.org Subject: Re: Creating a 10km wireless bridge...pointers? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Polytropon List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 21 Mar 2009 13:16:57 -0000 On Sat, 21 Mar 2009 06:43:01 -0600, Modulok wrote: > Something > like: >=20 > LAN<->BSDrouter<->modem<->Antenna<~~air~~>Antenna<->modem<->DSL Your BSD router would act as a gateway, eventually using functions like "IPDIVERT and DHCPd via RF". It would then serve as an AP, put in simple words. This should be achievable mostly by means of the base OS. For the RF transmission part, you will need antennas (yag=ED type ideally) with a good signal gain and narrow radiation. It's possible to build them, but I'm sure they're sold, too. Optionally, a power amplifier (PA) may be added on both ends to strengthen the signal if it's too low. In case you have something in the way that hinders a direct view from your desired AP to the client (e. g. a mountain), things get a bit more complicated, a repeater would be needed. But as long as you can see it, you can connect it. :-) Coming back to your suggestion, I'd express it as follows: ~ > ~ > V V +--------------+ | < ~ < ~ | | wireless NIC |---+ | DSL in +--- ^ -- v ---+ | +--------------+ the wall--*-->| ethernet NIC | +---| wireless NIC | at your +--------------+ +--------------+ site your FreeBSD "AP" box client's box * insert modem if needed I'm not sure why wou want to employ a modem on the client's site. If it's only about Internet access, it's usable via the WLAN component already. If you want to handle IP telephony and multiple clients... well, more complicated, the client's all in one modem / spliiter / router / DHCP server / firewall / whatnot would need to connect to the RF "bridge", I'm not sure if this is possible even if the modem offers WLAN antennas. > Tips? References? Advice? Sorry, no. :-) Just some basic thoughts from a radio amateur and FreeBSD user. --=20 Polytropon >From Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...