A open dns resolver provides name resolution to any clients outside of its LAN / WAN or authoritative domains. Open DNS resolvers are a bad as they are usually involved in attacking DDoS attacks, spoofing, DNS cache poisoning, and much more. It allows everyone to use your network resources and bandwidth. Run the following command to test your BIND DNS (or any other DNS software) server for open recursion:
Disable Recursion on DNS in Windows Server
To disable recursion on the DNS server using the Windows interface.
Log into your Windows dedicated or cloud server as administrator.
Changing to Static IP Address on Windows Server 2012
Log into your dedicated or cloud server as administrator.
Click on: Start
Click on: Server Manager
Enabling Remote Desktop on Windows Server 2012
Log into your dedicated or cloud server as administrator.
Click on: Start
Click on: Server Manager
Changing the Environment Variables on Windows Server 2012
Log into your dedicated or cloud server as administrator.
Click on: Start
Click on: Server Manager
Changing the Domain on Windows Server 2012
Log into your dedicated or cloud server as administrator.
Click on: Start
Click on: Server Manager
Changing the Virtual Memory on Windows Server 2012
Log into your dedicated or cloud server as administrator.
Click on: Start
Click on: Server Manager
Changing the Workgroup on Windows Server 2012
Log into your dedicated or cloud server as administrator.
Click on: Start
Click on: Server Manager
Changing the Computer Name on Windows Server 2012
Log into your dedicated or cloud server as administrator.
Click on: Start
Click on: Server Manager
Disabling Firewall on Windows Server 2012
Log into your dedicated or cloud server as administrator.
Click on: Start
Click on: Server Manager
