On Tue Aug 29 2000 at 20:14, John Sage wrote: [ Please remove the Repy-To: headers in your messages, it isn't necessary in your case, and it creates problems when doing a "reply" to your messages and not have the other recipients come up in the reply listing. You definitely do NOT need this header line. ] > > When I traceroute to DNS4.CP.MSFT.NET then > > > > 12 194.ATM4-0.GW3.SEA1.ALTER.NET (146.188.201.29) 348.981 ms * 347.277 ms > > 13 157.130.177.154 (157.130.177.154) 389.490 ms * * > > 14 207.46.129.14 (207.46.129.14) 397.272 ms * * > > 15 * * * > > 16 * * * > > 17 * * * > > 18 * * * > > This is very interesting. When I do a traceroute, I get where we are > wanting to go, and when I look at your results, you're getting one hop > away before it goes dead. The next hop after 207.46.129.14 is > dns5.cp.msft.net at 207.46.138.12 -- this seems *very* odd. This is exactly what you see when you attempt to traceroute through a network (using ttl as a "hop count"), but the routers are refusing (or can't) reply to the originating host. One example is when the unidentified routers are firewalls and/or have no public IP addresses (only private, internet-unroutable IPs) on any of their network interfaces. It is not all that unusual to make routers secure by denying direct access to them by anything from outside the internal network, by not giving them publically accessible IP numbers on any of their interfaces. They can still merrily route packets, no problem. (Neat trick, works very well). Cheers Tony -=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=- Tony Nugent <Tony@growzone.com.au> Systems Administrator, RHCE GrowZone OnLine (a project of) GrowZone Development Network POBox 475 Toowoomba Oueensland Australia 4350 Ph: 07 4637 8322 -=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=-=*#*=- - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org
