Take Back Control of Your Computer with Portmaster

Portmaster is a free and open-source application that puts you back in charge over all your computer’s network connections.

Contents

1 Engage the problem at The Core
2 Monitor All Network Activity
3 Block Unwanted Connections
4 Auto-Block via Selected Filter Lists
5 Enforce Secure DNS
6 Explore the Docs and Source Code
7 Configure Settings for Different Networks
8 Set Global & per‑App Settings
9 Download Portmaster For
- 9.1 Key Terms:

Engage the problem at The Core

The Internet is one of the most beautiful things there is. But every connection has the potential to betray you, leaking personal information you never wanted to share. That’s where we intercept.

Open Source – Secure software can only emerge when many smart people review and contribute to the code base.
Transparency – The trust to handle your sensitive data can only grow by being open about our company. In every aspect.
Our Quest – We chase freedom so our societies can flourish. Giving control back to the people is way overdue.

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.

Block Unwanted Connections

Many programs connect to the Internet without your knowledge. When you find unwanted connections, you can now simply block them.

Auto-Block via Selected Filter Lists

Automatically 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.

Enforce Secure DNS

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.

Explore the Docs and Source Code

In 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.

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

Set Global & per‑App Settings

Make 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.