https://github.com/evilsocket/opensnitch

OpenSnitch is a GNU/Linux interactive application firewall inspired by Little Snitch.
https://github.com/evilsocket/opensnitch

application-firewall data-breach firewall linux networking security

Last synced: 6 months ago
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OpenSnitch is a GNU/Linux interactive application firewall inspired by Little Snitch.

• Host: GitHub
• URL: https://github.com/evilsocket/opensnitch
• Owner: evilsocket
• License: gpl-3.0
• Created: 2017-04-16T14:02:50.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2025-04-30T22:21:06.000Z (7 months ago)
• Last Synced: 2025-04-30T23:26:46.404Z (7 months ago)
• Topics: application-firewall, data-breach, firewall, linux, networking, security
• Language: Python
• Homepage:
• Size: 18.3 MB
• Stars: 11,522
• Watchers: 204
• Forks: 551
• Open Issues: 118
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

          


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OpenSnitch is a GNU/Linux application firewall.


•• Key Features • Download • Installation • Usage examples • In the press ••




  



## Key features

 * Interactive outbound connections filtering.

 * [Block ads, trackers or malware domains](https://github.com/evilsocket/opensnitch/wiki/block-lists) system wide.

 * Ability to [configure system firewall](https://github.com/evilsocket/opensnitch/wiki/System-rules) from the GUI (nftables).

   - Configure input policy, allow inbound services, etc.

 * Manage [multiple nodes](https://github.com/evilsocket/opensnitch/wiki/Nodes) from a centralized GUI.

 * [SIEM integration](https://github.com/evilsocket/opensnitch/wiki/SIEM-integration)

## Download

Download deb/rpm packages for your system from https://github.com/evilsocket/opensnitch/releases

## Installation

#### deb

> $ sudo apt install ./opensnitch*.deb ./python3-opensnitch-ui*.deb

#### rpm

> $ sudo yum localinstall opensnitch-1*.rpm; sudo yum localinstall opensnitch-ui*.rpm 

Then run: `$ opensnitch-ui` or launch the GUI from the Applications menu.

Please, refer to [the documentation](https://github.com/evilsocket/opensnitch/wiki/Installation) for detailed information.

## OpenSnitch in action

Examples of OpenSnitch intercepting unexpected connections:

https://github.com/evilsocket/opensnitch/discussions/categories/show-and-tell

Have you seen a connection you didn't expect? [submit it!](https://github.com/evilsocket/opensnitch/discussions/new?category=show-and-tell)

## In the press

- 2017 [PenTest Magazine](https://twitter.com/pentestmag/status/857321886807605248)

- 11/2019 [It's Foss](https://itsfoss.com/opensnitch-firewall-linux/)

- 03/2020 [Linux Format #232](https://www.linux-magazine.com/Issues/2020/232/Firewalld-and-OpenSnitch)

- 08/2020 [Linux Magazine Polska #194](https://linux-magazine.pl/archiwum/wydanie/387)

- 08/2021 [Linux Format #280](https://github.com/evilsocket/opensnitch/discussions/631)

- 02/2022 [Linux User](https://www.linux-community.de/magazine/linuxuser/2022/03/)

- 06/2022 [Linux Magazine #259](https://www.linux-magazine.com/Issues/2022/259/OpenSnitch)

## Donations

If you find OpenSnitch useful and want to donate to the dedicated developers, you can do it from the **[Sponsor this project](https://github.com/sponsors/gustavo-iniguez-goya)** section on the right side of this repository.

You can see here who are the current maintainers of OpenSnitch:

https://github.com/evilsocket/opensnitch/commits/master

## Contributors

[See the list](https://github.com/evilsocket/opensnitch/graphs/contributors)

## Translating