How to setup AWS Site-to-Site VPN with Unifi UDM 🔒

By default resources, you launch on the cloud (EC2, RDS, and others) cannot communicate with your local networks like home or office. To allow this you can create a Site-to-Site VPN. This VPN connection will be established between your router and AWS VPC. Creating VPN between networks is well documented. However, you can have issues configuring your home router. At home, I have a Unifi Dream Machine router, which is designed for small networks, but has features that match advanced routers for offices. One of them is a Site-to-Site VPN using the IPSec protocol.