# bore

A modern, simple TCP tunnel in Rust that exposes local ports to a remote server, bypassing standard NAT connection firewalls. **That's all it does: no more, and no less.**

```shell
# Installation (requires Rust)
cargo install bore-cli

# On your local machine
bore local 8000 --to bore.pub
```

This will expose your local port at `localhost:8000` to the public internet at `bore.pub:<PORT>`, where the port number is assigned randomly.

Like [localtunnel](https://github.com/localtunnel/localtunnel) and [ngrok](https://ngrok.io/), except `bore` is intended to be a highly efficient, unopinionated tool for forwarding TCP traffic that is simple to install and easy to self-host, with no frills attached.

## Detailed Usage

This section describes detailed usage for the `bore` CLI command.

### Local Forwarding

TODO

### Self-Hosting

As mentioned in the startup instructions, there is an public instance of the `bore` server running at `bore.pub`. However, if you want to self-host `bore` on your own network, you can do so with the following command:

```shell
bore server
```

That's all it takes! After the server starts running at a given address, you can then update the `bore local` command with option `--to <ADDRESS>` to forward a local port to this remote server.

## Protocol

There is an implicit _control port_ at `7835`, used for creating new connections on demand. This can be configured in the command-line options.

## Acknowledgements

Created by Eric Zhang ([@ekzhang1](https://twitter.com/ekzhang1)). Licensed under the [MIT license](LICENSE).

The author would like to thank the contributors and maintainers of the [Tokio](https://tokio.rs/) project for making it possible to write ergonomic and efficient network services in Rust.