Here is some experience around the setup of an OpenVPN site-to-site connection from Ubuntu 20.04.2 LTS to UniFi Security Gateway (USG) written down. Preparation UniFi Security Gateway Public IP address 1.1.1.1 Local subnet 192.168.1.0/24 Local IP address 192.168.1.1 Ubuntu 20.4.2 LTS Public IP address 4.4.4.4 Local subnet 192.168.4.0/24 Local IP address 192.168.4.1 To setup an… Continue reading Tutorial: Setup Site-To-Site VPN with OpenVPN, Unifi Security Gateway and Ubuntu