Date: Sun, 11 Oct 1998 14:05:35 -0700 (PDT) From: Bryce Newall <data@dreamhaven.net> To: Evren Yurtesen <yurtesen@ispro.net.tr> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: traceroute Message-ID: <Pine.NEB.3.96.981011140324.19668I-100000@ds9.dreamhaven.org> In-Reply-To: <Pine.BSF.3.96.981011213115.24612A-100000@finland.ispro.net.tr>
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On Sun, 11 Oct 1998, Evren Yurtesen wrote: > is there a way to understand where a machine is connected > from (which isp) if they have closed tracroute icmp packet > transmission from their router? also how can somebody who is > connected from that isp know where s/he is connected from ? > (not the isp itself the next service provider which the isp > is taking service from?) There's no direct way of finding out, unless you have an account somewhere outside the ISP and can traceroute in. Of course, that will only show you one route, and if the ISP is multihomed, that won't help much. You can also do a "whois" on the domain, and see who is providing its nameservice. Sometimes they run their own nameservers, while sometimes they use their upstream provider's. If you see, say, ns.cw.net, that's a good indication that the ISP is homed to Cable & Wireless (formerly MCI). ********************************************************************** * Bryce Newall * Email: data@dreamhaven.net * * WWW: http://home.dreamhaven.net/~data * * "Insanity takes its toll. Please have exact change." * ********************************************************************** To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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