Simplewall is a Windows firewall configuration tool that manages network activity through the Windows Filtering Platform.
The tool addresses the need for granular control over network traffic on Windows systems by providing a user interface to configure WFP, which is the underlying filtering engine built into Windows. Rather than relying solely on Windows Defender Firewall's default interface, simplewall exposes WFP's capabilities to allow users to define detailed rules governing which applications and services can access the network. The approach works by translating user-defined rules into WFP filter configurations that the operating system enforces at the network stack level.
Simplewall suits users who need fine-grained firewall control beyond what the standard Windows Firewall interface provides, particularly those managing multiple applications or concerned about unauthorized network access by system processes. It is designed for Windows systems running on both standard x64 and ARM64 architectures. The tool is open source, making it suitable for users who prefer to review the code or modify it for their specific needs. Those seeking a lightweight alternative to third-party firewall solutions or users who want direct access to WFP configuration without additional abstraction layers would find this tool relevant.
The project shows active maintenance with regular updates addressing both functionality and stability. Development activity includes ongoing refinement of the rule configuration system and compatibility improvements across supported Windows architectures. The codebase remains focused on its core mission of WFP configuration without scope creep into unrelated features.
