https://www.digitalocean.com/community/tutorials/how-to-set-up-wireguard-on-ubuntu-20-04

In this article, we provide a curated overview of How To Set Up WireGuard on Ubuntu based on the latest available reports and research findings. How To Set Up WireGuard on Ubuntu is a subject of significant interest, and our goal is to present the most relevant information concisely.

The first step in this tutorial is to install WireGuard on your server. To start off, update your WireGuard Server's package index and install WireGuard using ...

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WireGuard is a lightweight Virtual Private Network (VPN) that supports both IPv4 and IPv6 connections. A VPN allows you to traverse untrusted networks as if you were on a private network. It gives you the ability to access the internet more safely from devices such as laptops or mobile phones when connected to untrusted networks, including public WiFi.

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WireGuard’s encryption relies on public and private keys for peers to establish encrypted tunnels between themselves. Each WireGuard release uses a fixed set of modern cryptographic methods, which helps keep the protocol simple and predictable. This design avoids runtime negotiation and reduces the risk of configuration errors.

In comparison, other VPN software such as OpenVPN and IPsec rely on Transport Layer Security and certificates to authenticate and establish encrypted tunnels. While this approach provides flexibility and supports a wide range of clients, it also increases configuration complexity and makes operational behavior harder to reason about.

In this tutorial, you will set up WireGuard on an Ubuntu server and configure another machine to connect to it as a peer using both IPv4 and IPv6, commonly referred to as a dual-stack configuration. You will also learn how to route peer traffic through the WireGuard server in a gateway setup, as well as how to use the VPN for encrypted peer-to-peer communication.

In addition to the core setup, this guide covers practical topics that are important for real-world deployments. These include understanding WireGuard’s peer-to-peer architecture, managing and rotating keys, handling IPv6 and dual-stack routing correctly, improving reliability for peers behind NAT, tuning performance, and understanding how WireGuard compares to OpenVPN in terms of transport protocols and firewall behavior.

For the purposes of this tutorial, another Ubuntu system is used as the WireGuard Peer. Later tutorials i

1. Structure as a step-by-step tutorial with numbered lists