Hey Product Hunt 👋 I'm Ramki, a Network Security TAC Engineer from Chennai, India. I built TacUNS Firewall because I wanted to bring more network visibility and control to everyday Android users without requiring root access or sending their traffic through a remote VPN service. The idea started with a simple question: **What if an Android user could actually see what their apps are doing on the network — and control it without needing to understand enterprise firewall configuration?** That led me to build: • Per-app Wi-Fi and mobile-data controls • Local DNS filtering and threat protection • Ad and tracker blocking • Community blocklists covering 84,000+ domains • Custom domain and firewall rules • Scheduled blocking • Per-app DNS and network activity • 24-hour activity timeline • Live network destination map • Security Posture Score The biggest challenge wasn't getting domains blocked. It was making network-security information understandable enough for a normal Android user while keeping the processing local. TacUNS is free, requires no root or account, and doesn't route traffic through TacUNS servers. I built and self-funded the project independently alongside my work in network security. I'd love feedback from Android developers, security engineers, privacy users, and anyone who has used Android firewall or ad-blocking apps. What is the one network-security feature you wish Android gave you natively?

TacUNS Firewall

Personal Android firewall for network security & control

Personal Android firewall for network security & control