DNS filtering is a type of web filtering that uses the domain name system to block access to malicious or unwanted websites and IP addresses so they cannot load on any network-connected device. The DNS filtering process uses content-based filtering to block access to your organization’s specified websites. If a site is deemed a threat, its IP address is blocked with a DNS filter and access is prevented on network-connected devices. This filtering process can also be implemented for any categorized sites, such as social media, news, and more to protect employee productivity in addition to enterprise cybersecurity.

Before a network-connected device loads a website, DNS filtering sends a query to your organization’s DNS solution to filter them through an allowlist or a blocklist, which either allows or blocks content from certain websites. If a malicious site is on the blocklist or is not present on the allowlist, the DNS resolver blocks the request. 

DNS filtering is one of the most common and effective methods of securing your organization’s environment from online threats. It ensures a secure network that allows more control over internet accessibility and employee productivity. With DNS filtering in place, instead of your server simply returning the IP address as long as the site exists, the request is processed through additional controls to ensure the site is safe and permitted through your business’ network. DNS filtering prevents phishing attacks and keeps malware from accessing your company’s network and off user devices, boosting your organization’s overall cybersecurity. Integrated Technology makes threat protection through content filtering simple and automatic for your business and your network users.