There are a number of IPSec clients for GNU/Linux, we reccomend using StrongSwan.
First, you'll need to install the official Wireguard client for your distro. Then, create your new WireGuard interface
wg0 as described in the Wireguard Quick Start documentation. Once set up, replace the configuration file at
/etc/wireguard/wg0.conf with the one we provide you.
You can read more about configuring your WireGuard client on GNU/Linux here. By default we specify
AllowedIPs = 0.0.0.0/0 in order to capture all traffic.