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WireGuard VPN on Ubuntu Server: Complete Setup and Configuration from A to Z

WireGuard runs directly in the Linux kernel, delivering significantly better performance than OpenVPN (real-world benchmarks: 100–200Mbps vs nearly 1Gbps) with far simpler configuration. This guide walks through each step in practice: installation, key pair generation, server and client configuration on Ubuntu Server — plus troubleshooting for common issues.