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OpenSnitch

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OpenSnitch

Free

GNU/Linux · self-hosted · GPL-3.0

Every plan, in full

On the record

Application rules
Yesgithub.com · read 22 Sep 2026
Application type
Interactive application firewallgithub.com · read 28 Sep 2026
Architecture support
Release assets include x86_64, i386, armhf and arm64 daemon packages.github.com · read 30 Sep 2026
Block-list limitation
Block lists may not work when the system uses systemd-resolved.github.com · read 30 Sep 2026
Block lists
It can block system-wide ads, trackers and malware domains, and supports domain, IP, network, regular-expression and MD5 lists.github.com · read 30 Sep 2026
Central management
A centralized GUI can manage multiple nodes.github.com · read 28 Sep 2026
Project community
The project invites users to join its server community.github.com · read 28 Sep 2026
Compatibility limit
The v1.8.0 release says its GUI is not compatible by default with Linux Mint 21.2 or earlier, Ubuntu 22.04 or earlier, and OpenSUSE 15.5 or earlier.github.com · read 30 Sep 2026
Connection alerts
Yesgithub.com · read 22 Sep 2026
Connection filtering
It interactively filters outbound connections.github.com · read 30 Sep 2026
Distribution support
Packages are provided for Debian/Ubuntu-style DEB systems, RPM systems, Arch Linux and NixOS.github.com · read 30 Sep 2026
Documentation support
The project directs users to documentation for detailed information.github.com · read 28 Sep 2026
Domain blocking
It can block ads, trackers, or malware domains system wide.github.com · read 30 Sep 2026
Downloads
The project README directs users to download DEB or RPM packages from its releases page.github.com · read 30 Sep 2026
Encrypted nodes
Since v1.6.1, node communications can be encrypted with TLS/SSL certificates using simple, tls-simple or tls-mutual authentication.github.com · read 30 Sep 2026
Firewall configuration
The GUI can configure the system firewall using nftables.github.com · read 28 Sep 2026
Firewall controls
The GUI can configure system firewall rules and inbound policy using nftables; iptables rules cannot be configured from the GUI.github.com · read 30 Sep 2026
GUI launcher
The GUI can be started with opensnitch-ui or from the Applications menu.github.com · read 28 Sep 2026

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