afwall

AFWall+ (Android Firewall+) is an open-source firewall application for rooted Android devices, leveraging Linux's iptables framework to provide system-level network control. It allows users to block or permit internet access for individual apps, even if they have standard Android internet permissions. Key features include per-app and per-network-type (WiFi, mobile data, VPN, tethering) rules, IPv4/IPv6 support, real-time monitoring, detailed logging, and advanced options like boot protection, custom iptables scripting, and Tasker integration. The app supports Android 5.0+ (with legacy versions for older OS) and requires root access (Magisk, SuperSU, etc.). It is available in 40+ languages and offers profiles for different network scenarios. AFWall+ is not an antivirus or ad-blocker but focuses on privacy and data control by intercepting network requests at the kernel level.