If you are not an IT professional or manage the DNS infrequently, then understanding where the CIRA DNS Firewall fits will help you to understand what you need to do. Full documentation is provided to all CIRA DNS Firewall customers.
In the past, the modem to the internet was separate from the router you used in your home or small business. Today, these two devices are often combined into one device, often called a gateway.
In a similar way to how your business or home router knows where the devices (i.e. PCs, phones, tablets, smart TVs etc.) on your network are located, the CIRA DNS Firewall servers know where servers on the internet are located. This is traditionally called a recursive resolver and the difference is that the CIRA recursive resolver refuses to provide directions to cybersecurity threats.
For most small and medium businesses, the recursive service is delivered by an Internet Service Provider while many, if not all, large organizations run their own. For you to change it there are several options.