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Excellent performace

NxFilter is a lightweight DNS filter that doesn’t introduce any latency to your network. We deliver outstanding performance with minimal resource usage.

Next-level features

Active Directory integration, DNS over HTTPS, screen time control, data caps, user-level reports, remote user filtering, clustering, and more.

Free for everybody

Commercial use, nonprofits, schools, hospitals, enterprises, family protection — you name it. Whatever the purpose, it’s free!

Crafted with technical excellence
and expertise in DNS filtering.

 

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A few of NxFilter’s core features

Faster and lighter

NxFilter only needs to filter DNS queries on your network which means virtually no latency and makes it extremely lightweight compared to using a webproxy server.

 

Local DNS cache

NxFilter caches DNS responses from its upstream DNS server. Users will receive responses locally from NxFilter cache greatly reducing DNS traffic on your network.

 

Mobile user filtering

NxFilter provides several types of filtering agents for remote devices running on Windows and Android. You can also filter iOS devices using DNS over HTTPS.

High scalability

NxFilter is used by ISPs, DNS filter providers, schools, hospitals, and other businesses and has many years of real-world performance experience.

 

User authentication

You can protect your network with user authentication by NxFilter. NxFilter supports various kinds of user authentication methods including Active Directory integration.

 

URL keyword filtering

You may want to filter something you can’t filter with a DNS filter. You want to block some search keywords in Google and other search engines. It is possible with NxFilter.

Very stable

NxFilter is very stable and does not require frequent restarts. Many users run NxFilter for months without restarting and typically only restart when applying updates.

 

Multiple policies

NxFilter provides multiple filtering policies for users and groups. Policies are easily created in the NxFilter GUI and can be applied to individual users and/or groups.

 

Community proven

We are all tired of those sales tactics. We present you the real world usage reports by our test user group. Decide which is the best for you based on real world data.

Home User

Home User


You may want to apply a stricter filtering policy for your kids while keeping a more lenient one for yourself. NxFilter supports multiple policies based on users and groups.

Large Site

Large Site


NxFilter is designed to handle DNS filtering for several thousand users with ease. That’s why it’s an ideal solution for schools and universities.

Branch Office

Branch Office


Want to centrally filter all your branch offices? You can deploy NxFilter in the cloud and filter multiple branch offices using its DNS relay agent, NxRelay.

MSP User

MSP User


If you’re planning to build your own cloud-based DNS filtering service, NxCloud is the answer. It is a multi-tenant DNS filtering platform built on NxFilter.
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