From owner-freebsd-arch@freebsd.org Mon Oct 19 23:09:47 2015 Return-Path: Delivered-To: freebsd-arch@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 253B0A18A90 for ; Mon, 19 Oct 2015 23:09:47 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: from mail-qg0-f52.google.com (mail-qg0-f52.google.com [209.85.192.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id DDEFC14CC for ; Mon, 19 Oct 2015 23:09:46 +0000 (UTC) (envelope-from wlosh@bsdimp.com) Received: by qgeo38 with SMTP id o38so356395qge.0 for ; Mon, 19 Oct 2015 16:09:45 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=tTX/0bU/p6kcfF4GR2pW5VS0TX7fSQAdsVRrFyVJtFU=; b=bDnwi9jFxqCGSI4PmfM1XfN8iGwqYHyrENccSGJozuyIEtb59MGDRb6rO1LkFtOrre tkYSgeL6c8+KK3i1GfNA6S5v5eSNBELdAV1HVuypTpjxfhl5Y/1PknqjvKATc9sIjABg JwtiIStCJDQU2AHQVG4L/GwyOSCxHo/iEZp9tOCIl7O5MfE2619vw9U4vdvBgPNyk4VV Mius78XDGeqQiwKCEelYxzrdYVCz4Ds8BoYWUDsuY8MNXuzjMckpMRL28P/R4l4VNl9k 3+NOyUV/xdpHyPcvVoB+gZGxHp1Hfxw74ARsGVvYXgDmH3Mgdzrd9ZL7yxQYkHXq5jYh Z0qg== X-Gm-Message-State: ALoCoQnws8zp5NWcQYDr72ohMF5Z33X+z1w7XNZgWMnj8e2B3z34tkU4ZiG3ildHTNjeIt7qK+nJ MIME-Version: 1.0 X-Received: by 10.140.19.13 with SMTP id 13mr8018227qgg.97.1445296185522; Mon, 19 Oct 2015 16:09:45 -0700 (PDT) Sender: wlosh@bsdimp.com Received: by 10.140.80.167 with HTTP; Mon, 19 Oct 2015 16:09:45 -0700 (PDT) X-Originating-IP: [69.53.245.5] In-Reply-To: <20151019210035.GB15569@FreeBSD.org> References: <20151019171215.GX15305@FreeBSD.org> <20151019210035.GB15569@FreeBSD.org> Date: Mon, 19 Oct 2015 17:09:45 -0600 X-Google-Sender-Auth: sJr8GFxTuD1_6kXx0SezhoagTak Message-ID: Subject: Re: Enabling all available ttys if available console From: Warner Losh To: Glen Barber Cc: "freebsd-arch@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 19 Oct 2015 23:09:47 -0000 On Mon, Oct 19, 2015 at 3:00 PM, Glen Barber wrote: > On Mon, Oct 19, 2015 at 05:12:15PM +0000, Glen Barber wrote: > > For several months now, I have been contemplating enabling all active > > ttys on the system by 1) changing the defaults from std.9600 to 3wire, > > and 2) setting ttyu{0,1,2,3} from 'off' to 'onifconsole'. > > > > The only drawback to doing this that I can think of is it could open > > a potential attack vector, however this would require physical access to > > the system. > > > > The benefit to doing this is the system would be accessible via ttys > > other than ttyu0 by default, which unless there is someone with local > > access to the system, is painful for administrators to gain console > > access remotely by default. > > > > Are there objections to changing the default, or have I missed something > > larger in this proposed change? > > > > Based on the replies so far, unless there are no objections by tomorrow, > I'll commit the change. > > Thanks to everyone who replied. Any chance we can move the tip entries from 9600 to 115200 too for the other direction? Warner