The Gold Standard of DNS Filtering
Easy Policy Management: Build and deploy comprehensive filtering policies in just a few clicks. Gain granular control over 40 content categories and 9 threat categories, plus integrated blocking for ads, trackers, and risky top-level domains.
AI-Powered Threat Defense: Don’t wait for a breach to happen. Our proprietary AI identifies and blocks malicious domains an average of 10 days ahead of competitors, stopping nearly a third of all potential security incidents at the source.
Fast, Flexible Deployment and Filtering Options
Secure your environment, your way. Set up network forwarding via our global Anycast network. Simply point your network to our resolver and we’ll take it from there.
Opt for a relay deployment to get better visibility of DNS traffic on your network. Using split-horizon DNS resolution, the relay determines whether the request matches the local domain and sends it to the LAN DNS server, or tags the request with information that identifies the client and sends the traffic to DNSFilter.
Get deeper visibility, granular control, and detailed reporting for users and devices with roaming client deployments. Choose from Classic DNS Filtering to enforce filtering at all times, ensuring strong security and privacy with a fail-closed mode.
Balance the need for security while ensuring your mobile workforce remains connected and productive with DNS PreCheck. By filtering locally at the device level through a transparent proxy, filtering is continuous and works on networks where DNS control or exceptions aren’t possible.

DNS FILTERING BENEFITS
- Stop threats before they hit your network
- Granular control over how your network and devices are used
- Insight into what types of threats might impact your network
- Increased productivity by blocking time-waster sites
- User-level reporting on sites and apps used by employees
- Meet PDNS or CMMC compliance requirements around dns filtering protection
Frequently Asked Questions
WHAT IS DNS FILTERING?
DNS filtering is defensive software that prevents cybersecurity threats by following simple logic: if a website has something potentially dangerous within it, DNS filtering blocks a user from visiting it in the first place. It’s a zero-trust solution that leaves nothing to chance.
HOW DOES DNS FILTERING WORK?
DNS filtering gives you the ability to filter bad or unwanted content at the DNS level. DNS filtering works by categorizing every single domain you attempt to access and cross-referencing those categorizations and domain names with policies you've determined you want to block.
HOW DOES DNSFILTER PERFORM DNS FILTERING?
At DNSFilter we use our proprietary AI tool, Webshrinker, to continuously scan more than 180,000,000 websites and determine their purpose and content type. We flag sites that potentially contain malware, ransomware, malvertising, or scams, and then allow our customers to block them. This creates a first-line-of-defense by between a click from a user, and serving the harmful page. Additionally, we allow for one-click blocking of domains less than 30 days old.
WHY SHOULD YOU FILTER DNS?
Given its versatility, DNS filtering offers users advanced customization features. Depending upon the needs of your organization, you can choose which types of content are permissible and which to block, specific to your company’s needs. In addition, by enabling DNS-based web filtering, you safeguard your users against malicious content. Let’s take a look at the four main benefits of filtering DNS.
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