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NxFilter
Filter DNS traffic for ads, malware, phishing, and unwanted content with NxFilter for organizations.
About NxFilter
NxFilter is a DNS filtering system for organizations such as businesses, schools, and hospitals. It filters DNS queries for ads, malware, phishing, and unwanted content, with local DNS caching, multiple policies for users and groups, and user authentication including Active Directory integration. It supports remote filtering through agents for Windows and Android and DNS over HTTPS for iOS, along with URL keyword filtering for search engines.
Key features
- Filters DNS queries for ads, malware, phishing, and unwanted content
- Caches DNS responses locally to reduce network DNS traffic
- Applies different filtering policies to users and groups
- Supports user authentication including Active Directory integration
- Provides filtering agents for Windows and Android devices
- Supports iOS filtering through DNS over HTTPS
Best for: Schools, hospitals, businesses, and families that need DNS-level filtering for multiple users.
Good for
- Caches DNS responses locally, reducing DNS traffic on the network
- Allows different filtering policies for individual users and groups
- Runs for extended periods without requiring frequent restarts
NxFilter at a glance
- Website
- nxfilter.org
- Category
- Privacy & Security › Ad & Tracker Blockers
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Android, iOS, Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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NxFilter FAQ
Can different users have different filtering rules?
Yes, NxFilter provides multiple filtering policies that can be applied to individual users and groups.
How are remote or mobile devices filtered?
NxFilter provides filtering agents for Windows and Android devices, and supports filtering iOS devices using DNS over HTTPS.
Can branch offices be filtered centrally?
Yes, NxFilter can be deployed in the cloud and filter multiple branch offices using its DNS relay agent, NxRelay.
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