Guard Your Net Firewall
// readme
Know what your PC talks to. Decide who gets through.
A free, open-source zero-trust firewall for Windows, built directly on the Windows Filtering Platform.
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The problem
Your computer talks to hundreds of servers a day. Some of that is you. Much of it is not — telemetry, analytics, update checks, software you installed years ago and forgot about.
Windows allows nearly all of it outbound by default, and shows you almost none of it.
What GunWall does
Nothing reaches the network until you say so.
Every program is denied by default. When something new tries to connect, GunWall asks — showing who is asking, where they are going, whether the file is signed, and which country and company own the other end. You answer once; it remembers.
Then it shows you everything else: live connections, per-application bandwidth, a world map of where your traffic actually goes, and a searchable log of every decision with the reason attached.