From owner-freebsd-questions Sat Jan 23 03:11:47 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id DAA14513 for freebsd-questions-outgoing; Sat, 23 Jan 1999 03:11:47 -0800 (PST) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from mail.exo.net.au (sky-valley.exo.net.au [203.14.230.103]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id DAA14467 for ; Sat, 23 Jan 1999 03:11:33 -0800 (PST) (envelope-from bullseye.apana.org.au!andymac@mail.exo.net.au) Received: by mail.exo.net.au id m1040wf-0004onC (Debian Smail-3.2.0.101 1997-Dec-17 #2); Sat, 23 Jan 1999 22:09:41 +1100 (EST) Received: from bullseye.apana.org.au (central.apana.org.au [203.9.107.245]) by bullseye.apana.org.au (8.8.8/8.8.8) with SMTP id WAA23704; Sat, 23 Jan 1999 22:01:59 +1100 (EST) (envelope-from andymac@bullseye.apana.org.au) Date: Sat, 23 Jan 1999 22:01:27 +1100 (EDT) From: Andrew MacIntyre To: Greg Lehey cc: Robert Chalmers , W Gerald Hicks , freebsd-questions@FreeBSD.ORG Subject: Re: A tricky PPP + Routing question In-Reply-To: <19990123170333.B36690@freebie.lemis.com> Message-ID: X-X-Sender: andymac@bullseye.apana.org.au MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, 23 Jan 1999, Greg Lehey wrote: > Sure, you can set the routing as Andrew suggests, and it'll work, but > what's the name of your machine? nanguo.chalmers.com.au? Or > robert9.lnk.telstra.net? You can certainly get them to change the > name of the link (if they get silly, point to 139.130.136.133), but > you end up with all sorts of problems: some (broken, but paranoid) ftp > servers will refuse you access (try ftp.guug.de, for example), your > mail will go out with suggestions in the headers ``may be forged'', > you may end up with hanging NFS mounts, and other things that I > haven't thought of. > > The correct answer is that your end of the PPP link should have an > address in your IP domain. If your end of the link doesn't originate or receive services (ie its just a router, such as a Cisco/Bay/Ascend box), then what they're asking isn't a problem (provided they don't screw up the routing, of course...). It's only a problem if your router is something that can originate or receive services, ie Robert's FreeBSD box. The alternative is to use your FreeBSD router with natd, and hide your network behind the router (which you get the carrier to name correctly if they can). This largely means your legit class C address space is wasted, and it becomes hard to have multiple hosts directly accessible from the internet in general :-(. It might mean somewhat more security for systems in your private network, so long as your router isn't compromised. I'll stay off the soapbox about Telstra and ISDN.... -- Andrew I MacIntyre "These thoughts are mine alone..." E-mail: andrew.macintyre@aba.gov.au (work) | Snail: PO Box 370 andymac@bullseye.apana.org.au (play) | Belconnen ACT 2616 Fido: Andrew MacIntyre, 3:620/243.18 | Australia To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message