From: Jeff Westhead (jwesthWINDOWS.MICROSOFT.COM)
Date: Thu May 08 2003 - 13:29:05 CDT

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Your W2K3 DNS server and the remote DNS server have agreed to exchange
UDP packets > 512 bytes, but obviously your router is not capable of
handling this.

You can disable EDNS-0 in your W2K3 DNS server by running this command:

                dnscmd /Config /EnableEDnsProbes 0

Once you run this your W2K3 DNS server will never advertise its EDNS
capabilities and so will never receive a UDP packet > 512 bytes.

dnscmd.exe can be found in the Support Tools.

You can find more information on our support of EDNS here:

http://www.microsoft.com/technet/prodtechnol/windowsserver2003/proddocs/
standard/sag_DNS_imp_EDNSsupport.asp

and here:

http://www.microsoft.com/technet/prodtechnol/windowsserver2003/proddocs/
standard/sag_DNS_pro_ModifyEDNS.asp?frame=true

---------- Forwarded message ----------
Date: Thu, 8 May 2003 08:59:01 -0500
From: "Loucks, Jason" <loucksCOMMPROD.COM>
Reply-To: Windows NTBugtraq Mailing List

oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
Have you discovered a security vulnerability related to Windows or a
commercial product which runs on Windows?

Need assistance crafting the format or translating your advisory to English?

Need to verify it, or having problems contacting the Vendor?

Contact mailto:AdvisoriesNTBugtraq.com

oooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo

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