![]() ![]() The first step for configuring WireGuard is to generate an asymmetric public/private key pair on each system that will participate in WireGuard. (The macOS app is problematic at the time of this writing.) Since the client and server I use run Fedora Linux, I ran the dnf install wireguard-tools command as root (or via sudo) to install WireGuard on them. For Windows, Android, macOS and iOS, there is an app you can get, but you should avoid the macOS app and instead use the Homebrew package manager method. ![]() You can usually install WireGuard from your Linux or BSD UNIX repository. Visit to see how to install WireGuard on your operating system. In the following sections, we'll implement this basic VPN configuration using WireGuard, and then discuss the configuration for other use cases. After creating a VPN, each system will have a second IP address on the VPN (e.g., 172.16.0.1 for the client and 172.16.0.99 for the server). The following diagram shows a client ( IP address 192.168.1.107) and server (IP address 192.168.1.106) connected to the same IPv4 local area network (LAN) (192.168.1.0/24). And while WireGuard works equally well with IPv4 or IPv6 networks, we’ll stick to IPv4 for readability. However, it's easier to visualize communication when we think in terms of clients and servers, so we'll call one system a client and the other a server. Each system that participates in a WireGuard VPN is considered equal and called a peer in WireGuard documentation. WireGuard does not have a separate client and server component. We often say that this data is tunneled through the VPN. When data is sent on this virtual network, it is automatically encrypted to ensure that the data remains private. Like its name suggests, a VPN is a virtual network that overlays your ordinary network. In short, WireGuard is a cross-platform VPN that minimizes bandwidth and maximizes data transfer speed while boasting top-notch security and a lower attack surface. Moreover, it provides VPN functionality only when traffic is sent, doesn't include complex authentication mechanisms and is available for all desktop and mobile operating systems. WireGuard uses high-performance strong cryptography, such as ChaCha20 (for symmetric data encryption) and Curve25519 (for asymmetric key negotiation), alongside a framework similar to Secure Shell (SSH) and Git. Unfortunately, this complexity often translates to more problems, slower traffic, as well as fewer use cases and supported operating systems. Each of them focus on different encryption algorithms and flow control strategies, alongside mechanisms for providing for secure authentication and negotiating encryption keys. When it comes to encrypting traffic between systems, there’s a wide variety of different VPN software available, some of which have been used since the 1990s. In this article, I’ll describe how to configure WireGuard VPN technology using Fedora Linux – leveraging skills from CompTIA Network+, CompTIA Linux+, CompTIA Server+ and CompTIA Security+. Whether you are a server administrator, network administrator or cybersecurity professional, the method you’ll likely use to provide this secure access is via a virtual private network (VPN). What Renewal Options Are Available to You?Ĭonfiguring secure access to servers and networks across the internet for remote workers is crucial to ensure that systems and data remain secure.
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