From owner-freebsd-questions Wed Oct 15 00:06:23 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id AAA23941 for questions-outgoing; Wed, 15 Oct 1997 00:06:23 -0700 (PDT) (envelope-from owner-freebsd-questions) Received: from freebie.lemis.com (gregl1.lnk.telstra.net [139.130.136.133]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id AAA23930 for ; Wed, 15 Oct 1997 00:06:01 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: (from grog@localhost) by freebie.lemis.com (8.8.7/8.8.5) id QAA09894; Wed, 15 Oct 1997 16:35:42 +0930 (CST) Message-ID: <19971015163542.17582@lemis.com> Date: Wed, 15 Oct 1997 16:35:42 +0930 From: Greg Lehey To: "Matthew D. Fuller" Cc: parrothd@midwest.net, freebsd-questions@FreeBSD.ORG Subject: Re: tty-level buffer overflows References: <19971015145606.47003@lemis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.84e In-Reply-To: ; from Matthew D. Fuller on Wed, Oct 15, 1997 at 02:04:15AM -0500 Organisation: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8250 Fax: +61-8-8388-8250 Mobile: +61-41-739-7062 WWW-Home-Page: http://www.lemis.com/~grog Fight-Spam-Now: http://www.cauce.org Sender: owner-freebsd-questions@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Wed, Oct 15, 1997 at 02:04:15AM -0500, Matthew D. Fuller wrote: > On Wed, 15 Oct 1997, Greg Lehey wrote: > >> On Wed, Oct 15, 1997 at 12:19:14AM -0500, Matthew D. Fuller wrote: >>> If I set it to 28800, no problems. If I set it to 14400, no >>> problems. I know it's not my system that's slow; Cyrix 6x86 166, 72 >>> megs RAM, the serial ports are both 16550. >> >> What happens if you set the port speed to 57600? If that works, that >> should be enough for you. Otherwise you should check your cabling and >> modem setup. You should be using hardware handshake. Check this >> excerpt from "The Complete FreeBSD": > >> >> If you look at this profile, you'll notice that the active profile includes the >> parameter &K4. This means ``use XON/XOFF flow control''. This is not >> desirable: it's better to use RTS/CTS flow control. To fix it, >> > OK; maybe I did use bad phrasing... > Both serial ports REPORT 16550. cuaa1 is an internal 28.8 modem. I can't > look at my modem's settings now, obviously, since I'm PPP'd into my ISP, > but when I do this: > PPP ON mortis> show modem > device: /dev/cuaa1 speed:28800 > cs8, no parity, CTS/RTS on. > (blah blah blah) > doesn't that mean that it is enabled at all levels? It doesn't mean that the modem has CTS/RTS enabled. The only way to find that out is to ask it. Greg