“A friendlier firewall for users who want visibility without manually reading packet logs.”
At a glance
| Replaces | GlassWire, Commercial firewalls |
|---|---|
| Open-source license | GPL-3.0 |
| Privacy | Per-app network rules and local DNS filtering expose background traffic. |
| Lightweight signal | Combines outbound control and DNS protection in one desktop service. |
| Community health | Actively developed open-source product |
| Platforms | Windows, Linux |
Per-app network rules and local DNS filtering expose background traffic.
Combines outbound control and DNS protection in one desktop service.
Actively developed open-source product. Verify current releases and open issues in the source repository before critical deployment.
Should you switch to Portmaster?
A friendlier firewall for users who want visibility without manually reading packet logs. A successful migration starts with a small real project, not a feature checklist. Test the files, integrations, shortcuts, and collaboration steps you use every week before removing the existing tool.
Open source gives you inspectable code and a path away from vendor lock-in, but it does not eliminate tradeoffs. Support may be community-led, some commercial file formats may be imperfect, and self-hosted options require security updates and backups. Use the official website and source repository above to confirm current compatibility.