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A lightweight and fast web-filter for corporate use

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NxFilter screenshotNxFilter is a free, fast and light web-filter that was especially designed for enterprise environment. Originally this program begun as a DNS filter, but it developed and now is able of offering web proxy based filtering as well. The application is powerful, being able to do everything you can expect from a web-filter or a DNS filter.

NxFilter provides DNS filtering capabilities, eliminating the latency issues that may occur in your network. These latency problems amplifies themselves as the number of users grows. NxFilter acts as a forwarding DNS server, so your network traffic will not go through anywhere.

NxFilter is also capable of increasing your Internet speed, thanks to its ability to store local cache for DNS lookup tasks. By doing this, NxFilter eliminates the need of waiting for the response back from DNS servers, significantly reducing the network traffic.

Unlike other DNS filters which are not compatible with user authentication, NxFilter will offer 4 methods of authentication. These methods are listed below:

- authentication based on IP address
- authentication based on password
- LDAP authentication
- sign-in using Active Directory

By using this application you will be able to identify and differentiate users and apply various filtering policies.

NxFilter is able to support application control, thanks to its agents: NxClient and NxLogon. This allows you to block a large range of programs, like Skype, Tor, Minecraft, UltraSurf, uTorrent, and many other.

NxFilter is also able to provide web-proxy filtering using the same two agents. It supports URL keyword filtering, safe search implementing, and IP host obstructing. Even though it packs these two web-proxy agents, NxFilter still remains a light-weight filtering software.

NxFilter is easy to deploy and to configure, allowing you to only setup your DHCP server like the DNS server for its clients. Then the application will start filtering all your users Internet traffic. The program enables you to block outgoing 53 port on TCP and UDP. The application is able to filter a wide range of network protocols, including FTP, P2P, HTTP, HTTPS, etc. NxFilter can also detect botnet and malware based on DNS packet inspection.


  • Simple management.
  • Powerful but light solution.


  • No automatic update of software.
  • Manually specify DNS server on some devices.
Name NxFilter
Developer | see all products from this developer
Product Homepage NxFilter
License Free (Freeware)
Last Week Downloads 10
All Time Downloads 4,001
Filename nxfilter-
Filesize 37.5MB
MD5 Checksum F2239873D3876B298992FB96B6046D3C
OS Support Windows All
Category Internet

100% CLEAN Certification

BadgeNxFilter has been tested by team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. Our editors will recheck this software periodically to assure that it remains clean.


Old Versions

Software Date Added
NxFilter October 05, 2020 - Latest Version
NxFilter May 07, 2020
NxFilter January 21, 2020
NxFilter October 28, 2019
NxFilter September 11, 2019

Download the free NxFilter