You cannot use Netstat to verify holes in ISA Server 2004

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SYMPTOMS

On a computer that is running Microsoft Internet Security and Acceleration Server 2004, you cannot use the Netstat command-line tool to verify holes, or IP addresses and ports that are open for network traffic.

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CAUSE

The Netstat command-line tool does not show all IP addresses and ports that the computer is listening to on Internet Security and Acceleration Server 2004.

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The Fwengmon tool is used to check the state of the firewall. It is available for public download at the following Microsoft Web site:

http://www.microsoft.com/technet/isa/downloads/2004/default.mspx (http://www.microsoft.com/technet/isa/downloads/2004/default.mspx)

For more information about the Netstat command-line tool, click the following article number to view the article in the Microsoft Knowledge Base:

331078 (http://support.microsoft.com/kb/331078/ ) The NETSTAT command incorrectly shows ports in listening states

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