Freedom251 › Firewall Software
OpenSnitch

Plans
| Plan | Billed and limits | Price |
|---|---|---|
| OpenSnitch | GNU/Linux · self-hosted · GPL-3.0 | Free |
As github.com lists them, read 30 Sept 2026. The maker's own page has the final word.
Facts from OpenSnitch's own pages
- Application rules
- Yes · github.com, 22 Sept 2026
- Application type
- Interactive application firewall · github.com, 28 Sept 2026
- Architecture support
- Release assets include x86_64, i386, armhf and arm64 daemon packages. · github.com, 30 Sept 2026
- Block-list limitation
- Block lists may not work when the system uses systemd-resolved. · github.com, 30 Sept 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, 30 Sept 2026
- Central management
- A centralized GUI can manage multiple nodes. · github.com, 28 Sept 2026
- Project community
- The project invites users to join its server community. · github.com, 28 Sept 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, 30 Sept 2026
- Connection alerts
- Yes · github.com, 22 Sept 2026
- Connection filtering
- It interactively filters outbound connections. · github.com, 30 Sept 2026
- Distribution support
- Packages are provided for Debian/Ubuntu-style DEB systems, RPM systems, Arch Linux and NixOS. · github.com, 30 Sept 2026
- Documentation support
- The project directs users to documentation for detailed information. · github.com, 28 Sept 2026
- Domain blocking
- It can block ads, trackers, or malware domains system wide. · github.com, 30 Sept 2026
- Downloads
- The project README directs users to download DEB or RPM packages from its releases page. · github.com, 30 Sept 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, 30 Sept 2026
- Firewall configuration
- The GUI can configure the system firewall using nftables. · github.com, 28 Sept 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, 30 Sept 2026
- Free plan
- Yes · github.com, 22 Sept 2026
- GUI launcher
- The GUI can be started with opensnitch-ui or from the Applications menu. · github.com, 28 Sept 2026
- Inbound policy
- The system firewall configuration can apply a restrictive inbound policy that denies inbound connections while allowing established and localhost traffic. · github.com, 30 Sept 2026
- License
- The repository identifies the project license as GPL-3.0. · github.com, 30 Sept 2026
- Linux distributions
- The installation wiki documents packages or installation steps for Debian/Ubuntu, RPM distributions, Arch Linux, and NixOS. · github.com, 30 Sept 2026
- Log formats
- The syslog logger supports RFC3164, RFC5424, CSV, and JSON formats. · github.com, 30 Sept 2026
- Current maintainers
- The repository provides a link to the current OpenSnitch maintainers. · github.com, 28 Sept 2026
Where OpenSnitch stands on Freedom251
- Firewall Software#6 of 81