changlan / Kytan

kytan: High Performance Peer-to-Peer VPN

kytan is a high performance peer to peer VPN written in Rust. The goal is to to minimize the hassle of configuration and deployment with a goal of multi-platform support.

Supported Platforms

• Linux
• macOS (Client mode only)

Installation

Currently, precompiled kytan binaries are available for Linux and macOS. You can download them from releases.

Alternatively, you can compile it from source if your machine is installed with Rust.

$ git clone https://github.com/changlan/kytan.git
$ cd kytan
$ cargo build --release

Running kytan

For complete information:

$ sudo ./kytan -h

Server Mode

Like any other VPN server, you need to configure iptables as following to make sure IP masquerading (or NAT) is enabled, which should be done only once. In the future, kytan will automate these steps. You may change <INTERFACE> to the interface name on your server (e.g. eth0):

$ sudo iptables -t nat -A POSTROUTING -s 10.10.10.0/24 -o <INTERFACE> -j MASQUERADE

To run kytan in server mode and listen on UDP port 9527 with password hello:

$ sudo ./kytan server -k hello 

If you want open log display (info is log level, you can change it by your idea)

$ sudo RUST_LOG=info ./kytan server -k hello 

Client Mode

To run kytan in client mode and connect to the server <SERVER>:9527 using password hello:

$ sudo ./kytan client -s <SERVER> -p 9527 -k hello

if you want open log display (info is log level, you can change it by your idea)

$ sudo RUST_LOG=info ./kytan client -s <SERVER> -p 9527 -k hello

License

Apache 2.0