Canadian businesses are typically fairly knowledgeable and savvy when it comes to technology. By necessity, however, most businesspeople do not have intimate knowledge of the behind-the-scenes processes that make the internet work. Hopefully, more Canadian businesspeople will learn about the salutary advantages of using a DNS firewall. To fully explain what you should know about the DNS firewall, it is helpful to start with a quick primer on DNS. Also called the domain name system, DNS is essentially the connective tissue of the internet. A kind of virtual address book, DNS is the fundamental technology that allows your browser to find your favorite websites www.bluecatnetworks.com. To a layperson, using the web is as simple as typing in something like “MyFavoriteWebsite.Com.” On a basic level, however, internet IP addresses look like this: 4.382.43.99. DNS is the system that converts the alphanumeric URL you type into the numeric IP address that truly identifies a remote server in the network.