Portmaster is a free and open-source application that puts you back in charge over all your computer’s network connections.
Monitor All Network Activity - Discover everything that is happening on your computer. Expose every connection your applications make and detect evil ones. Finally get the power to act accordingly.
Manually Allow or Block Connections - Add your own rules to block specific domains you dislike. Enable Prompt Mode and decide the fate of every new connection. Block or Allow.
Auto-Block via Selected Filter Lists - Block ads, trackers, malware and NSFW sites via trusted domain-lists, which are also used by Ad-Blockers, etc. Easily change the defaults to fit your needs.
Enforce DNS-over-TLS - Even 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.
Configure Settings for Different Networks - The 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.
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Download Safing Portmaster - Windows | Ubuntu