Router Steps First, we need to configure the router. Step 1 – Firewall Rules Before we configure anything related to VPNs, we need to make sure we allow the right packets through the firewall. I’ve allowed traffic on UDP ports 500, 1701 and 4500, plus two IP protocols relating to IPSec: ipsec-esp (50) and ipsec-ah (51). Step 2 […]

Step 1 — Install the Let’s Encrypt Client Let’s Encrypt certificates are fetched via client software running on your server. The official client is called Certbot, and its developers maintain their own Ubuntu software repository with up-to-date versions. Because Certbot is in such active development it’s worth using this repository to install a newer version […]