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Portmaster is a free and open-source application that puts you back in charge over all your computer's network connections.
Take back your freedomDiscover everything that is happening on your computer. Expose every connection your applications make and detect evil ones. Finally get the power to act accordingly.
Discover the portmasterMany programs connect to the Internet without your knowledge. When you find unwanted connections, you can now simply block them.
Discover the portmasterAutomatically block ads, trackers and malware hosts via trusted domain-lists, which are also used by Ad-Blockers, etc. Easily change the defaults to fit your needs.
Discover the portmasterEven with invasive connections gone, you do not want to share your dns requests out in the open. With the Portmaster, you can easily re-route all your dns queries to a DNS-over-TLS provider of your choice.
Discover the portmasterIn the age of Mass Surveillance, what good is a service when you cannot see what it is really doing? We believe in open source. We also document everything as good as we can.
Discover the portmasterThe Wi-Fi in your local coffee shop is riskier than yours at home. Set up your settings for different networks and then simply press a button when changing location. All settings will adjust immediately
Discover the portmasterMake your own rules. Completely cut off applications from the Internet. Or block all p2p connections except for certain apps. Or never connect to specific countries. The Portmaster has you covered.
Discover the portmasterView guide and status for other Linux 2.4+ distributions
You have a question? We answered some already, but you can always contact us at hello@safing.io
You can find our code on Github. The Portmaster, the Portmaster UI, the SPN, the docs and this website have their respective repositories. Jess, the heart of the SPN, which got audited by Cure53, can also be found online.