# OpenRad: a Radmin VPN client and wire-format reimplementation

> OpenRad reimplements Radmin VPN as a Rust desktop and command-line client with a virtual Ethernet interface. Its documented wire format and transport engine cover network membership, peer authentication, direct TCP and UDP connections, and relay fallback; Android, Python and Minecraft clients share the format.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-08
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/gringoestrangeiro/openrad>
- Primary source: <https://github.com/gringoestrangeiro/openrad/blob/5404488e38e896269d4fee07d285b7f665eef528/README.md>
- Catalog page: <https://awesomerea.org/resources/openrad-case/>
- Record JSON: <https://awesomerea.org/resources/openrad-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/openrad-case/index.md)

## Requirements & limits

- **Prerequisites:** Rust 1.95 or newer for the primary build; Linux is the established platform.
- **Limits:** Windows x64 is experimental; Android is beta, and Minecraft clients are alpha.
- **License:** MIT License.

## Primary sources

1. <https://github.com/gringoestrangeiro/openrad/blob/5404488e38e896269d4fee07d285b7f665eef528/README.md>
2. <https://github.com/gringoestrangeiro/openrad/blob/5404488e38e896269d4fee07d285b7f665eef528/docs/architecture.md>
3. <https://github.com/gringoestrangeiro/openrad/blob/5404488e38e896269d4fee07d285b7f665eef528/LICENSE>

## More in Protocols

- [FANUC RMI Mock: reconstructing a controller server](https://awesomerea.org/resources/fanuc-rmi-mock-case/index.md) · Case study
- [openfsd: reconstructing the VATSIM FSD server protocol](https://awesomerea.org/resources/openfsd-case/index.md) · Case study
- [Google Wifi API: discovered router HTTP endpoints](https://awesomerea.org/resources/google-wifi-api-case/index.md) · Case study
- [UniFi Protect API: decoding the updates WebSocket protocol](https://awesomerea.org/resources/unifi-protect-updates-protocol-case/index.md) · Case study
- [Chiaki: PlayStation Remote Play client informed by protocol analysis](https://awesomerea.org/resources/chiaki-remote-play-case/index.md) · Case study
- [esp8266-midea-dehumidifier: rebuilding dehumidifier serial control](https://awesomerea.org/resources/esp8266-midea-dehumidifier-case/index.md) · Case study

## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.