Thursday, October 21, 2010

UDP harrasment

After some silly anti-sniffing patch update, Windows 2003's DNS service starts to allocate 2500 UDP ports which such a huge number comes to conflict to other services using UDP.
To reduce the number of UDP ports, edit the following key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\Parameters\SocketPoolSize
then restart the DNS service

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