An on-device firewall and live network monitor for Android that puts users back in control of what their apps can reach. It watches inbound and outbound connections in real time and lets you allow or block traffic per app, with a dual-engine design that works with or without root.
A privacy and security tool for anyone who wants to see, and control, exactly what their phone is talking to.
Highlights
- Dual engine: an iptables root engine for authoritative, battery-cheap blocking, or a no-root VPN-based fallback, selected automatically.
- Per-app control of inbound and outbound traffic, layered on top of the operating system.
- Firewall profiles (Home, Work, Public, Lockdown) for one-tap posture changes.
- Ask-to-connect prompts and a fail-secure lockdown mode.
- Live and historical monitoring with per-app bandwidth graphs and connection logs.
- Encrypted at rest with SQLCipher; no root required.
Built with Kotlin, Jetpack Compose, VpnService, iptables, SQLCipher.
Frequently asked
What is Android Network Firewall?
An on-device firewall and live network monitor for Android that puts users back in control of what their apps can reach. It watches inbound and outbound connections in real time and lets you allow or block traffic per app, with a dual-engine design that works with or without root.A privacy and security tool for anyone who wants to see, and control, exactly what their phone is talking to.HighlightsDual engine: an iptables root engine for authoritative, battery-cheap blocking, or a no-root VPN-based fallback, selected automatically.Per-app control of inbound and outbound traffic, layered on top of the operating system.Firewall profiles (Home, Work, Public, Lockdown) for one-tap posture changes.Ask-to-connect prompts and a fail-secure lockdown mode.Live and historical monitoring with per-app bandwidth graphs and connection logs.Encrypted at rest with SQLCipher; no root required.
What was Android Network Firewall built with?
It was built with Kotlin, Jetpack Compose, VpnService, iptables, SQLCipher.
Who built Android Network Firewall?
Android Network Firewall was designed and built by Sokol Alickaj, the engineer behind AEU-I.
Can AEU-I build something similar for me?
Yes. AEU-I designs and builds custom software, web and mobile apps and hosting. Get in touch to discuss a similar project.