What are we running as routers / firewalls these days? - Off-topic
If you're looking to dive deeper into a specific part of the setup, let me know: armbian router
The firewall backbone. This manages your NAT (Network Address Translation) to share one internet connection with multiple devices. What are we running as routers / firewalls these days
Run sysctl -w net.ipv4.ip_forward=1 to enable packet routing. Install Router Tools: armbian router
Install WireGuard, generate keys, and create a config:
apt update && apt upgrade -y apt install iptables iptables-persistent dnsmasq netfilter-persistent wireguard -y