Gnirehtet

Gnirehtet is a reverse tethering tool for Android that allows a phone or tablet to use the internet connection of the computer it is connected to over adb. Unlike traditional tethering, which shares a phone’s connection with a computer, this project works in the opposite direction and is especially helpful for testing Android devices on controlled desktop networks. The software does not require root access on either the Android device or the host computer, which makes it more practical for developers, testers, and power users working in standard environments. It supports GNU/Linux, Windows, and macOS, and it relays TCP and UDP traffic over IPv4, giving it broad usefulness for app testing and device connectivity scenarios. The project includes both Rust and Java implementations, with the Rust version recommended because it uses less CPU and memory and does not require a Java runtime.