The 3.0 version of NetFilter is provided as a free download on our website. The most popular versions of the NetFilter are 3.0 and 1.0. This software is an intellectual property of Netfilter. The program's installer files are generally known as netfilter.exe or nf.exe etc. The program lies within Internet & Network Tools, more precisely Network Tools.
From the developer:
NetFilter is an Internet monitoring system, protecting users by blocking content deemed inappropriate. When an user accesses a web page that was blocked by the program, a special web page is shown instead, informing about the blocking. It is also possible to restrict the usage of the computer to specific time periods.
You may want to check out more software, such as IP-P2P, which might be related to NetFilter.