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Portmaster

Portmaster is a free and open-source network monitoring and firewall tool that gives you full control over your computer’s connections. Designed to block mass surveillance and unwanted trackers, it empowers users with customizable rules for both system-wide and per-application settings.

Portmaster is the open source alternative to:
Portmaster screenshot

About Portmaster

Portmaster monitors every network connection your device makes, exposing both legitimate and potentially harmful communications. It automatically blocks trackers, ads, and malware hosts using trusted filter lists, while securing your DNS queries by routing them through DNS-over-TLS providers. With options to create your own rules and configure global or per-app settings, Portmaster offers robust, user-controlled privacy protection for your computer, ensuring a safer Internet experience.

Key Features

  • Monitors all network activity and exposes every connection
  • System-wide auto-blocking of trackers, ads, and malware hosts
  • Secures DNS queries using DNS-over-TLS
  • Customizable global and per-application settings
  • Open source transparency and community-driven development

Pricing

Portmaster Free
Free

Ideal for users who want essential privacy control and network monitoring without cost.

Features:
  • Privacy Filter, Secure DNS, Network Monitor
  • Network History, Bandwidth Visibility, Weekly Reports
  • VPN Compatibility Mode, VM Support, Docker Support
  • Multiple Identities, Use Many IPs At Once, Choose Exit Country
  • Discord User Flair & Private Discord Channel
  • Community & Safing Support
Portmaster Plus
Paid (Up to 5 devices)

Designed for those needing deeper insights and extra privacy controls across multiple devices.

Features:
  • Enhanced investigation features
  • All Free features included
  • Access to a private Discord channel
  • Extended support
Portmaster Pro
Paid (Up to 5 devices)

Offers comprehensive protection and monitoring for the most demanding privacy requirements.

Features:
  • Advanced privacy protection
  • All Free features included
  • Private Discord channel access
  • Prioritized support

Summary

Portmaster delivers comprehensive network defense by monitoring connections, blocking unwanted trackers, and securing DNS queries. Its customizable settings and open source model build trust while providing effective protection against mass surveillance.

Adrian
Created by
Adrian
Mar 9, 2025Updated2 min read
This content was partially generated using artificial intelligence.

Tool Details

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