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On Tue, 15 Jan 2002, Steven M. Bellovin wrote: > > Um, it's firewalled? Most of microsoft isn't traceroutable or > >pingable. > > Yup: > > b129$ ipsrvtrace -p 80 windowsupdate.microsoft.com [...] > 15 126.96.36.199 188.8.131.52 155.934 156.415 156.973 > 16 iusbsecurc1202-ge-6-0.msft.net 184.108.40.206 13.109 13.598 14.142 > 17 - - * * * > 18 220.127.116.11 18.104.22.168 13.988 14.373 * Microsoft has been moving/changing Windowsupdate.microsoft.com for the last week or so. The problems have been covered extensively in other forums. Although microsoft technicians have messed up access filters on its routers in the past, I believe this is just them blocking some packets used by the standard traceroute. If you are having other problems with windowsupdate, I think they are unrelated to traceroute.