Rust is considered as one of the most safe and secure programming language. Downloading and installing Rust is pretty simple. Here is the link for Rust Oxide Mod http://oxidemod.org/downloads/. Now you will also need some server plugins. Here is the link for the plugins http://oxidemod.org/forums/rust-plugin.
You won't need to download rust leagacy. Now unzip the files you have downloaded and open the folder. Select all the flies in the folder and copy and place everything in the server folder. Now you have seyup your rust server.