Microsoft KB Archive/312640

= DNS or UDP Program Stops Working Through ISA Server =

Article ID: 312640

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Internet Security and Acceleration Server 2000 Standard Edition

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This article was previously published under Q312640



SYMPTOMS
A DNS server that is configured as a secure NAT or firewall client to ISA Server may stop resolving names. When you restart the DNS service on the internal DNS server or restart the Firewall service on the ISA Server computer, the problem is temporarily resolved. A Network Monitor trace may show that the ISA Server computer is returning &quot;Destination Port Unreachable&quot;. This issue could also occur with a UDP program other than DNS.



RESOLUTION
This problem is resolved in the latest service pack for Microsoft Internet Security and Acceleration Server 2000. For additional information about how to obtain the latest ISA Server service pack, click the article number below to view the article in the Microsoft Knowledge Base:

313139 How to Obtain the latest Internet Security and Acceleration Server 2000 Service Pack



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Keywords: kbbug kbenv kbpending KB312640

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