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GeezerVison is showing safing.io — Portmaster - Application Firewall by Safing

Monitor All Network Activity

See every network connection your applications make in real time. Identify unexpected or unwanted connections and block them individually or by rule.

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Block Trackers System-Wide

Block ads and trackers at the DNS level across all applications, not just your browser. Add custom rules or block specific domains as needed.

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Set Global & per‑App Settings

Make your own rules. Completely cut off applications from the internet, block specific connection types, or restrict connections to certain countries per app or globally.

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Download Portmaster

Portmaster is free and open-source. Read the source code or download and try it.

Windows (.exe)
Free Download
Debian/Ubuntu (.deb)
Free Download
Fedora (.rpm)
Free Download

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Blog, Podcast & Videos

Blogs Podcast Videos
Split Tunneling arrives in Portmaster 2.2.1
Viktor
BLOG - 17. Jul 2026
Portmaster Pro price drop: €80/year starting today
Viktor
BLOG - 24. Feb 2026
Portmaster Development Roadmap: 2025 Survey Results
Viktor
BLOG - 24. Oct 2025
Help Shape the Future of Portmaster: Take the 2025 User Survey
Viktor
BLOG - 26. Aug 2025
Portmaster v2 is Here: Foundation for the Future
Viktor
BLOG - 23. Jul 2025
Safing Joins Forces with IVPN: A New Chapter Begins
Raphael
BLOG - 3. Dec 2024
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