Open-Source Security Tools: Portmaster Firewall and Pi-hole Ad Blocking

Alex Verem's open-source security series recommends Portmaster, a free firewall that reveals which apps are phoning home, Pi-hole for network-wide ad blocking, and Trivy for scanning outdated vulnerable software.

2026-10-23 ~ 2026-10-23 · 2 related posts

• Pi-hole blocks ads house-wide on a Pi; Trivy flags outdated software flaws — alex_verem · 2026-10-23
• Portmaster: Free open-source firewall that shows which apps phone home, 14k stars — alex_verem · 2026-10-23