As the title suggests, I am using wg-easy from GitHub (https://github.com/wg-easy) on an Ubuntu Linux server with Docker. It's very easy to use and create peers. I only allow certain WAN IPs to access the firewall to reach my Wireguard server. However, monitoring the firewall shows connections to a range of IP addresses as shown in the image below. I am not sure if this is secure or if the public and private keys are being leaked by being sent backdoor to another server.