The internet doesn’t understand our languages, it communicates in machine languages such as IP addresses. Every time you visit a website with your computer or laptop, the device translates the name of the websites you type into the browser to an IP address. This is made possible by the DNS (domain name system) which resolves human-readable hostnames like the name of a website and translates them to IP addresses. Therefore, no internet connection is possible without a DNS query. Malware isn’t spared either, to steal or corrupt data in your computer, it needs to communicate with its control and command servers which is only possible via the DNS. This is why a DNS Firewall is critical to a DNS server.

How A DNS Firewall Works

It prevents hackers from turning your network into a botnet of criminal activities, exfiltrates or ransoms your data, and allows your users to connect to the internet safely. A DNS firewall does this by preventing the computer system from interacting with malicious websites. The firewall continues to stop threats by maintaining and updating a list of IP addresses that are seen as potential threats. Intercepted unsolicited and malicious traffic is transferred to secure locations for further investigation, or it’s blocked completely.

Benefits of Using A DNS Firewall

As incidences of cybercrime increase across Canada, it is essential for companies to protect their systems from malicious software. Failure to deploy an effective DNS firewall could result in lost, stolen, or corrupted company data which will leave your company exposed to all kinds of fraudulent activities, or even worse. Some of the advantages of a DNS firewall include:

• It comes with a function threat intelligence platform to detect and ward off any form of malicious attacks on the system.
• It’s easily customizable, users can easily add domain entries or custom IP addresses and select what type of threats to include in a DNS system.
• It protects against all types of threats such as botnets, malvertising, ransomware, phishing, and other generic threats.
• Allows accurate and efficient remediation of potential threats by identifying and isolating affected machines.
• If by any chance a malware bypasses security layers, it won’t be able to contact home security hence it won’t be able to exfiltrate or destroy data.

DNS firewalls are extremely easy to deploy. Typically, the firewall will begin to identify and ward off threats in the first 30 minutes after installation. It acts a perimeter to your organization preventing intrusion from sinister external forces. However, industry experts recommend additional measures on top of the firewall for sufficient security. For more information, the resources at may be helpful to you.

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