Minimal Firewall Deminimis

firewall firewall-configuration firewall-rules security wfp windows windowsfilteringplatform

Use this command to install Minimal Firewall:

winget install --id=Deminimis.MinimalFirewall -e

Minimal Firewall is a portable Windows firewall frontend that alerts users to block internet connections without requiring custom kernel modifications or disabling Core Isolation.

Minimal Firewall

Minimal Firewall is a portable Windows firewall tool designed to alert users about unauthorized internet connections while maintaining system security without kernel modifications or disabling Core Isolation.

Key Features:

Lockdown Mode: Blocks all network connections by default, requiring explicit user approval for any program to connect.
Real-Time Alerts: Instant notifications when blocked programs attempt to connect, allowing on-the-spot decisions.
Simple Rule Creation: Single-click options to allow or block applications permanently or temporarily.
Wildcard Rules: Manage rules for frequently updating apps like browsers by specifying folders.
UWP & Service Support: Control modern Windows Store apps and background services alongside traditional desktop programs.
Light/Dark Themes: Clean, user-friendly interface adaptable to any time of day.

Minimal Firewall

Minimal Firewall enhances the built-in Windows Firewall to block all unknown network connections by default, giving you complete control. It prompts you for action when an application tries to connect, allowing you to mitigate malware, stop unwanted telemetry, and prevent data leaks. With Minimal Firewall, no application "phones home" without your explicit permission.

💾 Download the latest version here

Core Features

Lockdown Mode: The heart of Minimal Firewall. When enabled, it configures the Windows Firewall to block all outbound connections that don't have an explicit "Allow" rule. No program connects without your say-so.
Real-Time Connection Alerts: Get instant notifications when a blocked program attempts network access. Choose between interactive pop-ups for immediate action or silent, in-app alerts on the dashboard to review later.
Simple & Advanced Rule Creation:
- Program Rules: Allow or block applications with a single click.
- Advanced Rules: Create detailed rules based on protocol (TCP/UDP/ICMP), local/remote ports, IP addresses, services, and network profiles (Domain, Private, Public).
Firewall Auditing: The Audit tab shows you a log of firewall rules that were created, modified, or deleted by other applications, giving you visibility into background changes.
Live Traffic Monitoring: The "Live Connections" tab displays all active TCP connections on your system in real-time, showing which process is connected to which remote address.
Wildcard Rules: Easily manage applications that update frequently (like web browsers) by creating rules that apply to any executable within a specific folder.
UWP & Service Support: Manage rules for modern Windows Store (UWP) apps and background system services, not just traditional desktop programs.
Light & Dark Themes: A clean, modern user interface that's easy on the eyes, day or night.
100% Local and Private: Minimal Firewall contains no telemetry, does not connect to the internet, and stores all rules and logs locally on your machine.

Feature	Minimal Firewall	TinyWall	SimpleWall	Fort Firewall
Size	~2MB	~2MB	~1MB	~6MB
Portability	✅	❌	✅	✅
Requires Core Isolation Off?	No	No	No	Yes
Connection Alerts	✅	❌	✅	✅
Advanced Rule Editor	✅	❌	✅	✅
Firewall Change Auditing	✅	❌	❌	❌
Wildcards	✅	❌	❌	✅
Open Source	✅	✅	✅	✅
Avoids low-level filters	✅	✅	❌	❌

Minimal Firewall Deminimis

README

Minimal Firewall

💾 Download the latest version here

Core Features

Related Programs

User Guide

Why Use Minimal Firewall?

Screenshots

The Dashboard shows blocked connections for you to manage.

Or, choose to get interactive pop-up notifications.

Includes both light and dark themes.

Create simple program rules or powerful, detailed advanced rules.

FAQ

Security by Default

Secure Rule Creation

Technical Architecture

Special Thanks

Contributing

License