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SPECIFICTION
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Fort Firewall

github.com

Free plan Windows
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Spec score 8.1 #31 of 80 in Firewall Software

Spec sheet

Purpose
Fort Firewall is a firewall for Windows 7 and later that allows or blocks network access per program.Read 11 Oct 2026 · github.com
Supported platforms
WindowsRead 22 Sep 2026 · github.com
Support
The project directs users to report bugs and discuss ideas through its GitHub repository.Read 11 Oct 2026 · github.com
License
The public repository identifies Fort Firewall as licensed under GPL-3.0.Read 11 Oct 2026 · github.com
Application rules
YesRead 22 Sep 2026 · github.com
Bandwidth
Fort supports per-program download and upload speed limits.Read 11 Oct 2026 · github.com
Capacity limits
The guide lists maximums of 32 groups, 32 speed limits, 32 zones, 64 time periods and 1,024 total rules.Read 11 Oct 2026 · github.com
Compatibility limit
The guide says Windows Memory integrity (HVCI) must be off to install Fort on Windows 10 and later.Read 11 Oct 2026 · github.com
Connection alerts
YesRead 22 Sep 2026 · github.com
Default behavior
Fort starts in Auto-Learn mode, which allows new programs; the FAQ advises switching to Block, if not allowed, to block unapproved programs.Read 11 Oct 2026 · github.com
Driver
Fort uses its own Windows Filtering Platform driver and does not configure Windows Defender Firewall.Read 11 Oct 2026 · github.com
Filter modes
Its filter modes include Auto-Learn, Block if not allowed, Allow if not blocked and Ignore; Ask to Connect is listed as unavailable in this version.Read 11 Oct 2026 · github.com
Integration
The installer can add Windows Explorer integration, and My Fort lists Control Panel Sounds integration and auto-run settings.Read 11 Oct 2026 · github.com
Monitoring
The software provides traffic statistics, a connection log with block reasons, a live traffic graph and a filter simulator.Read 11 Oct 2026 · github.com
Network filtering
It can filter connections by address, port, protocol, direction, network area and network profile.Read 11 Oct 2026 · github.com
Other requirements
Installation requires the matching Microsoft Visual C++ Redistributable, and installing the driver requires administrator rights.Read 11 Oct 2026 · github.com
Outbound control
advancedRead 22 Sep 2026 · github.com
Program controls
Programs can be allowed, blocked or stopped from starting, with wildcard paths, parent process rule inheritance and per-service filtering for svchost.exe.Read 11 Oct 2026 · github.com
Rule direction
bothRead 22 Sep 2026 · github.com
Rules
Network rules can be configured per program or globally using addresses, ports, protocols and other criteria.Read 11 Oct 2026 · github.com
Security controls
Optional password protection covers configuration and monitoring windows, alerts and most command-line commands.Read 11 Oct 2026 · github.com
Self-protection
Options include blocking traffic while Fort is not running, silently dropping inbound packets Windows would reject, and disabling service controls.Read 11 Oct 2026 · github.com
Standalone driver
Fort uses its own Windows Filtering Platform driver and does not configure Windows Defender Firewall.Read 11 Oct 2026 · github.com
Traffic controls
Fort supports per-program download and upload speed limits, program groups and scheduled time periods.Read 11 Oct 2026 · github.com
Windows integration
The installer can add a Windows Explorer context-menu item for editing a program's Fort settings.Read 11 Oct 2026 · github.com
Zones
Zones are address lists that can include downloadable block lists.Read 11 Oct 2026 · github.com

Plans and prices

Fort Firewall Free Windows 7 and later · GPL-3.0 licensed Read 11 Oct 2026 · github.com

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