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JSI Tip 1653. How can I prevent DNS spoofing?

The term "spoofing" describes the sending of non-secure data in response to a DNS query. It can be used to redirect queries to a rogue DNS server and can be malicious in nature.

Starting with SP4, you can filter out these non-secure records by using regedt32 to navigate to:


On the Edit menu, Add Value name SecureResponses, a type REG_DWORD entry, and set the data to 1.

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