69 lines
1.7 KiB
Markdown
69 lines
1.7 KiB
Markdown
# Fourth
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> Hey, now we are on level 4!
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[](https://crates.io/crates/fourth) [](https://github.com/KernelErr/fourth/actions/workflows/rust.yml)
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Fourth is a layer 4 proxy implemented by Rust to listen on specific ports and transfer TCP/KCP data to remote addresses(only TCP) according to configuration.
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## Features
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- Listen on specific port and proxy to local or remote port
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- SNI-based rule without terminating TLS connection
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- Allow KCP inbound(warning: untested)
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## Installation
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To gain best performance on your computer's architecture, please consider build the source code. First, you may need [Rust tool chain](https://rustup.rs/).
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```bash
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$ cd fourth
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$ cargo build --release
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```
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Binary file will be generated at `target/release/fourth`, or you can use `cargo install --path .` to install.
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Or you can use Cargo to install Fourth:
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```bash
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$ cargo install fourth
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```
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## Configuration
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Fourth will read yaml format configuration file from `/etc/fourth/config.yaml`, here is an example:
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```yaml
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version: 1
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log: info
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servers:
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example_server:
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listen:
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- "0.0.0.0:443"
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- "[::]:443"
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tls: true # Enable TLS features like SNI
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sni:
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proxy.example.com: proxy
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www.example.com: nginx
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default: ban
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relay_server:
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listen:
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- "127.0.0.1:8081"
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default: remote
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upstream:
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nginx: "127.0.0.1:8080"
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proxy: "127.0.0.1:1024"
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other: "www.remote.example.com:8082" # proxy to remote address
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```
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Built-in two upstreams: ban(terminate connection immediately), echo
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## Thanks
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- [tokio_kcp](https://github.com/Matrix-Zhang/tokio_kcp)
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## License
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Fourth is available under terms of Apache-2.0. |