I have an Application server running on windows 2012 r2 with multiple NICs. Each NIC has its own primary & secondary DNS servers assigned to the interface. But from one nic I see a lot of unwanted DNS queries sent out to its corresponding DNS server.
I have tried changing the NIC priority to lowest on the server which still did not help in resolving the issue.
My question: Can I block these DNS queries through windows firewall?
The hosts file method was to block a local user from browser access to listed sites. You may be able to discover the source process using message analyzer then block the process inbound or outbound traffic at firewall.