# Zika
IP Tunneling over MQTT
Designed to allow remote access for IoT/Edge devices connected to an existing MQTT network.
IP packets are sent as MQTT payloads on 2 topics:
- Client -> Server: `<topic>` (payload prepended by tunnel ID)
- Server -> Client: `<topic>/<base64-tunnel-id>`
Server: can handle multiple tunnels from multiple clients, each mapped to a different local IP
Client: can create multiple tunnels to multiple servers, each mapped to a different local IP
The MQTT connection is assumed to be secure & have authentication mechanisms in place.
Zika offers no extra layers of security on top of the MQTT connection,
it's possible capture/inject arbitrary IP packets to/from the target device if the MQTT connection/broker is compromised.
### Configuration
See [zika_config.sample.json](zika_config.sample.json)
### Building
Dependencies:
- cargo
- ...
```
$ cargo build
```