Download Windwall
Windwall is a management layer for the firewall built into Windows 10 and Windows 11. It presents a live list of connections with the process, address, port and protocol behind each entry, and it writes allow and block rules directly into the system firewall through the supported platform interfaces. Security postures can be switched from the notification area, and an Explorer context menu entry creates a blocking rule for a chosen program or folder. The core functionality is available without payment, without advertising and without an account.
An optional lifetime license extends the tool with a curated malicious-address blocklist enforced as hidden firewall rules, a DNS resolver that filters malicious domains, per-process bandwidth monitoring with WAN and LAN separation, an interactive endpoint map, per-application data allowances, retained searchable connection history, process ancestry tracing and grouped rule sets. The license is purchased once and covers up to three devices, with no recurring charge and no sign-in requirement.
Windwall performs all rule operations against the native Windows Firewall rather than a separate filtering engine, installs no kernel driver and runs no background service. Telemetry and analytics are absent, and the process names, addresses and ports displayed in the interface are read and retained on the local machine. The software is distributed through the Microsoft Store and is written in C# for the .NET platform.
Use Cases for Windwall
| Real-time unified stream of permitted and denied traffic | Isolate activity by process, address, or protocol |
| Direct manipulation of operating system firewall entries | Align interface state with enforced system policy |
| Predefined machine-wide security postures applied instantly | Switch blocking profiles across all network zones |
| Inline decision prompts for unrecognized outbound attempts | Record allow or deny choices at connection time |
| Shell-integrated blocking without opening the application | Restrict executables directly from file explorer |
| Ancestry reconstruction for originating process identification | Attribute traffic to parent process chains |
| Named rule sets toggled as a unified group | Manage frequently switched policies collectively |
| Curated blocklist enforcement via hidden native rules | Filter malicious endpoints and domain resolution |