nanog mailing list archives

Re: microsoft


From: "Christopher A. Woodfield" <rekoil () semihuman com>
Date: Sat, 29 Dec 2001 11:19:56 -0500


What you're seeing is MS using Akamai's Edgesuite service. Basically, 
www.microsoft.com CNAMES to www.microsoft.akadns.net, which resolves to 
the "closest" Akamai server to the source IP on the DNS query. That box 
caches the content from the *real* www.microsoft.com, and serves it up. 
Nice concept, and a helluva lot easier to implement on the end user side 
than FreeFlow, IMHO...

-Chris

On Fri, Dec 28, 2001 at 01:40:48PM -0500, Ian A Finlay wrote:

On Fri, 28 Dec 2001, Christopher Schulte wrote:
Looks to me as if Microsoft is altering global delegation of their
windowsupdate service.  Maybe diversifying the dns structure as they did
with microsoft.com after the attacks a while back?  They now have 12 DNS
servers scattered around the globe, just to serve microsoft.com dns.

Yeah, maybe they're moving they're update service from windowsupdate.microsoft.com to
windowsupdate.com. Maybe they'll "Akamize" windowsupdate.com too...

bash-2.04$ host www.microsoft.com
www.microsoft.com is a nickname for www.microsoft.akadns.net
www.microsoft.akadns.net has address 207.46.230.218
www.microsoft.akadns.net has address 207.46.230.219
www.microsoft.akadns.net has address 207.46.230.220
www.microsoft.akadns.net has address 207.46.197.100
www.microsoft.akadns.net has address 207.46.197.101
www.microsoft.akadns.net has address 207.46.197.113
www.microsoft.akadns.net has address 207.46.197.102

bash-2.04$ host windowsupdate.microsoft.com
windowsupdate.microsoft.com has address 207.46.106.88

bash-2.04$ host windowsupdate.com
windowsupdate.com has address 207.46.106.88
windowsupdate.com has address 207.46.226.17
windowsupdate.com has address 207.68.131.27

-Ian



-- 
---------------------------
Christopher A. Woodfield                rekoil () semihuman com

PGP Public Key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xB887618B


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