LibNetBlock is a library that on-the-fly (by preloading) prevents a program under its control to use the network, to help to keep the user's privacy, prevent data leakage and virus spreading.
You can think of LibNetBlock as a simple layer-7 (L7) firewall that simply blocks the network access for the program it controls.
There is NO NEED to rebuild your software, because LibNetBlock is a pre-loadable library, meaning you just need to RUN the software with LibNetBlock loaded.
LibNetBlock is also a development library.

See the project homepage https://libnetblock.sourceforge.io and the project Wiki in the menu above.

Features

  • Helps minimise the list of programs that can access the local network or the Internet.
  • Blocks unsafe network functions, files and programs.
  • Is preloadable - no need to rebuild software
  • Small size
  • No admin rights required to build or use
  • Has an Application Programming Interface (API) for use by software developers.
  • Portable and customisable.
  • Compiles on Linux, FreeBSD, macOS and SunOS

Project Samples

Project Activity

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License

GNU General Public License version 3.0 (GPLv3)

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Additional Project Details

Operating Systems

FreeBSD, Linux, Mac, Solaris

Intended Audience

Advanced End Users, Developers, Information Technology, Security, Security Professionals, System Administrators

User Interface

Non-interactive (Daemon)

Programming Language

C

Related Categories

C Security Software, C Networking Software, C Libraries

Registered

2013-06-11