From owner-freebsd-isp Wed Sep 20 12:31:52 2000 Delivered-To: freebsd-isp@freebsd.org Received: from exchange.nils.lib.il.us (mailsrv.nils.lib.il.us [206.190.22.38]) by hub.freebsd.org (Postfix) with ESMTP id F158137B443 for ; Wed, 20 Sep 2000 12:31:49 -0700 (PDT) Received: by EXCHANGE with Internet Mail Service (5.5.2650.21) id ; Wed, 20 Sep 2000 14:31:57 -0500 Message-ID: <3073B3378589D411B21600508BAF32AA01233F@EXCHANGE> From: Nathan Williams To: Adrian Gonzalez , freebsd-isp@freebsd.org Subject: RE: Using 'private net' IPs for WAN Addresses Date: Wed, 20 Sep 2000 14:31:47 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Considering the shortage of IP addresses under IPv4, I can only think of good reasons for ISPs using private network addresses. Also, not being accessible from the Internet can actually be a very good thing for ISPs, as many of these addresses are routers which need to be secure and have a minimal level of outside traffic. Nathan Williams nathanw@nils.lib.il.us > -----Original Message----- > From: Adrian Gonzalez [SMTP:adrianbsd@globalpc.net] > Sent: Wednesday, September 20, 2000 1:37 PM > To: freebsd-isp@freebsd.org > Subject: Using 'private net' IPs for WAN Addresses > > > Hello everyone > > Over the years I've seen several ISPs use 192.168.x.x or other of the IP > ranges reserved for private networks as WAN adressess for point-to-point > links on the Internet. > > Personally, I've always felt this to be a bad idea, but I can't come up > with a compelling reason to convince people not to do it. Is there a > reason not to? or is it just a matter of keeping apples and oranges in > their respective baskets? > > The only thing I can come up with is that you can ping the routers in > question from outside your own net if you use 'real' IPs. > > -Adrian > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-isp" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message